This is a Phase II trial to study the safety and efficacy of IMMU-130. IMMU-130 is composed of a drug attached to an antibody. The drug is the active ingredient in irinotecan which is a common chemotherapy drug used for colorectal cancer. Antibodies are proteins normally made by the immune system. They bind to substances that don't belong in the body to prevent harm to the body. The antibody in this study was designed to bind to a marker located on colorectal cancer tumors. The antibody was originally made from mouse proteins, but was changed in the laboratory to be more like human antibodies. This study will investigate how IMMU-130 acts for the treatment of colorectal cancer. The study is mainly being done to see if IMMU-130 is safe and effective.

Start Date01 Sep 2013

Sponsor / Collaborator

Gilead Sciences, Inc.

NCT01605318 / TerminatedPhase 1/2

A Phase I/II Study of Once or Twice Weekly IMMU-130 (hMN-14-SN38, Antibody-Drug Conjugate) in Patients With Colorectal Cancer

The goal of this clinical study is to determine the dosing and safety of labetuzumab govitecan (formerly known as IMMU-130; hMN-14-SN38, antibody-drug conjugate) in participants with colorectal cancer.

Start Date12 Feb 2013

Sponsor / Collaborator

Gilead Sciences, Inc.

NCT01270698 / CompletedPhase 1

A Phase I Study of IMMU-130 (hMN-14-SN38 Antibody Drug Conjugate) in Patients With Colorectal Cancer.

This is a Phase I trial to study the safety of IMMU-130. IMMU-130 is composed of a drug attached to an antibody. The drug is the active ingredient in irinotecan which is a common chemotherapy drug used for colorectal cancer. Antibodies are proteins normally made by the immune system. They bind to substances that don't belong in the body to prevent harm to the body. The antibody in this study was designed to bind to a marker located on colorectal cancer tumors. The antibody was originally made from mouse proteins, but was changed in the laboratory to be more like human antibodies. This study will investigate how IMMU-130 acts for the treatment of colorectal cancer. The study is mainly being done to see if IMMU-130 is safe.

Start Date01 May 2011

Sponsor / Collaborator

Gilead Sciences, Inc.

100 Clinical Results associated with Labetuzumab govitecan

100 Translational Medicine associated with Labetuzumab govitecan

100 Patents (Medical) associated with Labetuzumab govitecan

227

Literatures (Medical) associated with Labetuzumab govitecan

01 Jan 2024·Journal of Surgical Research

Humanized Anti-Carcinoembryonic Antigen Antibodies Brightly Target and Label Gastric Cancer in Orthotopic Mouse Models

Article

Author: Bouvet, Michael ; Lwin, Thinzar M ; Cox, Kristin E ; Yazaki, Paul J ; Turner, Michael A ; Hosseini, Mojgan ; Hoffman, Robert M ; Amirfakhri, Siamak ; Obonyo, Marygorret ; Murakami, Takashi ; Ghosh, Pradipta

INTRODUCTIONGastric cancer poses a major therapeutic challenge. Improved visualization of tumor margins at the time of gastrectomy with fluorescent tumor-specific antibodies could improve outcomes. The present report demonstrates the potential of targeting gastric cancer with a humanized anti-carcinoembryonic antigen (CEA) antibody in orthotopic mouse models.METHODSMKN45 cells were injected subcutaneously into nude mice to establish xenograft models. Tumor fragments collected from subcutaneous models were then implanted into the greater curvature of the stomach to establish orthotopic models. For tumor labeling, a humanized anti-CEA antibody (M5A) and IgG as a control, were conjugated with the near-infrared dye IRDye800CW. Time (24-72 h) and dose (50-100 μg) response curves were performed in subcutaneous models. Orthotopic models received 50 μg of M5A-IR800 or 50 μg IgG-IR800 as a control and were imaged after 72 h. Fluorescence imaging was performed on the mice using the LI-COR Pearl Imaging System.RESULTSIn subcutaneous models, tumor to background ratios (TBRs) reached 8.85 at 72 h. Median TBRs of orthotopic model primary tumors were 6.25 (interquartile range [IQR] 6.03-7.12) for M5A-IR800 compared to 0.42 (IQR 0.38-0.54) for control. Abdominal wall metastasis median TBRs were 13.52 (IQR 12.79-13.76) for M5A-IR800 and 3.19 (IQR 2.65-3.73) for the control. Immunohistochemistry confirmed CEA expression within tumors.CONCLUSIONSHumanized anti-CEA antibodies conjugated to near-infrared dyes provide specific labeling of gastric cancers in mouse models. Orthotopic models demonstrated bright and specific labeling with TBRs greater than ten times that of control. This tumor-specific fluorescent antibody is a promising potential clinical tool for improving visualization of gastric cancer margins at time of surgical resection.

01 Feb 2023·Cancer Biotherapy and Radiopharmaceuticals

First-In-Human Pilot PET Immunoimaging Study of ⁶⁴Cu-Anti-Carcinoembryonic Antigen Monoclonal Antibody (hT84.66-M5A) in Patients with Carcinoembryonic Antigen-Producing Cancers

Article

Author: Frankel, Paul H. ; Wu, Anna M. ; Yazaki, Paul J. ; Dandapani, Savita V. ; Shively, John E. ; Colcher, David M. ; Melstrom, Kurt A. ; Poku, Erasmus K. ; Chen, Yi-jen ; Simpson, Jennifer ; Fong, Yuman ; Adhikarla, Vikram ; Salehian, Behrooz D. ; Yamauchi, David M. ; Woo, Yanghee ; Wong, Jeffrey Y.C.

Background: PET imaging using radiolabeled immunoconstructs shows promise in cancer detection and in assessing tumor response to therapies. The authors report the first-in-human pilot study evaluating M5A, a humanized anti-carcinoembryonic antigen (CEA) monoclonal antibody (mAb), radiolabeled with ⁶⁴Cu in patients with CEA-expressing malignancies. The purpose of this pilot study was to identify the preferred patient population for further evaluation of this agent in an expanded trial. Methods: Patients with CEA-expressing primary or metastatic cancer received ⁶⁴Cu-DOTA-hT84.66-M5A with imaging performed at 1 and 2 days postinfusion. ⁶⁴Cu-DOTA-hT84.66-M5A PET scan findings were correlated with CT, MRI, and/or FDG PET scans and with histopathologic findings from planned surgery or biopsy performed postscan. Results: Twenty patients received ⁶⁴Cu-DOTA-hT84.66-M5A. Twelve patients demonstrated positive images, which were confirmed in 10 patients as tumor by standard-of-care (SOC) imaging, biopsy, or surgical findings. Four of the 8 patients with negative imaging were confirmed as true negative, with the remaining 4 patients having disease demonstrated by SOC imaging or surgery. All 5 patients with locally advanced rectal cancer underwent planned biopsy or surgery after ⁶⁴Cu-DOTA-hT84.66-M5A imaging (4 patients imaged 6-8 weeks after completing neoadjuvant chemotherapy and radiation therapy) and demonstrated a high concordance between biopsy findings and ⁶⁴Cu-DOTA-hT84.66-M5A PET scan results. Three patients demonstrated positive uptake at the primary site later confirmed by biopsy and at surgery as residual disease. Two patients with negative scans each demonstrated complete pathologic response. In 5 patients with medullary thyroid cancer, ⁶⁴Cu-DOTA-hT84.66-M5A identified disease not seen on initial CT scans in 3 patients, later confirmed to be disease by subsequent surgery or MRI. Conclusions: ⁶⁴Cu-DOTA-hT84.66-M5A demonstrates promise in tumor detection, particularly in patients with locally advanced rectal cancer and medullary thyroid cancer. A successor trial in locally advanced rectal cancer has been initiated to further evaluate this agent's ability to define tumor extent before and assess disease response after neoadjuvant chemotherapy and radiotherapy. clinical trial.gov (NCT02293954).

01 Aug 2022·Carbohydrate PolymersQ1 · CHEMISTRY

Pheophorbide A and SN38 conjugated hyaluronan nanoparticles for photodynamic- and cascadic chemotherapy of cancer stem-like ovarian cancer

Q1 · CHEMISTRY

Article

Author: Jiang, Yixin ; Kim, Jinho ; Yang, Su-Geun ; Cho, Steve K ; Kim, Min Hye ; Davaa, Enkhzaya ; An, Hyunsu ; Shin, Kyung-Ju ; Lee, Junghan

In this study, we designed photo-triggered reactive oxygen species (ROS)-generating pheophorbide A and ROS-cleavable thioketal-SN38 conjugated hyaluronan-cholesterol nanoparticles (PheoA-SN38-HC NPs). And we observed the combined therapeutic effects of PheoA-SN38-HC NPs against HEY-T30 human ovarian cancer (OC) model. Clinical Proteomic Tumor Analysis Consortium (CPTAC) data showed that the expression of cancer stem cell (CSC) markers (CD44, ALDH1A1, and CD117) is highly associated with poor clinical outcomes in OC patients. We proved that HEY-T30 cells overexpress CSC markers and much more invasive than other cancer cells. Flow cytometry (FACS) and microscopic analysis revealed the active targeting property of PheoA-SN38-HC NPs to CD44+ HEY-T30 cells. Moreover, the combination therapeutic effect of PheoA-SN38-HC NPs was clearly demonstrated against in vitro HEY-T30 cells and an in vivo xenograft mouse model. In particular, the paracrine cytotoxic effect of SN38 probably compensates the locoregional therapeutic limitation of photodynamic therapy.

News (Medical) associated with Labetuzumab govitecan

10 Sep 2023

·www.biospace.com

Gilead’s Phase 2 EVOKE-02 Study of Trodelvy® (sacituzumab govitecan-hziy) in Combination With KEYTRUDA® (pembrolizumab) Demonstrates Promising Clinical Activity in First-Line Metastatic Non-Small Cell Lung Cancer

Results Show Encouraging Activity of Trodelvy in Combination with KEYTRUDA in 1L Metastatic NSCLC Across all PD-L1 Subgroups and Histologies Studied Results Support Further Investigation of Trodelvy in Combination with KEYTRUDA in 1L Metastatic NSCLC FOSTER CITY, Calif.--(BUSINESS WIRE)-- Gilead Sciences, Inc. (Nasdaq: GILD) today announced promising early data from the global, open-label, Phase 2 EVOKE-02 study evaluating Trodelvy® (sacituzumab govitecan-hziy) in combination with Merck’s anti-PD-1 therapy KEYTRUDA® (pembrolizumab) with or without platinum agents in patients with previously untreated advanced or metastatic non-small cell lung cancer (NSCLC) without actionable genomic alterations. The results are being presented today at the IASLC 2023 World Conference on Lung Cancer (#WCLC23) hosted by the International Association for the Study of Lung Cancer. The preliminary analysis of the EVOKE-02 study includes results of two cohorts: Trodelvy in combination with KEYTRUDA in first-line advanced or metastatic squamous/non-squamous NSCLC with PD-L1 tumor proportion score (TPS) ≥ 50% (Cohort A) and TPS < 50% (Cohort B). In Cohort A (n=29), confirmed and unconfirmed objective response rate (ORR) was 69%, and disease control rate (DCR) was 86%. In Cohort B (n=32), confirmed and unconfirmed ORR was 44%, and DCR was 78%. Across both cohorts, the ORR was 56%, and DCR was 82%. Median duration of response (DoR) was not reached at the time of data cut-off, and DoR rate at six months was 88% in both cohorts. “Patients with metastatic NSCLC continue to need novel treatment options. The data from the EVOKE-02 study gives us confidence in the clinical activity of sacituzumab govitecan in combination with pembrolizumab in first-line metastatic NSCLC patients,” said Byoung Chul Cho, MD, PhD, Professor in the Division of Medical Oncology at Yonsei Cancer Center, Yonsei University College of Medicine. “The positive response rates and duration of response across patients treated with the combination shows promise compared with historical responses to anti-PD1 monotherapy in this setting. These data support further investigation of sacituzumab govitecan as a potential IO-combination option in first-line metastatic NSCLC.” “The EVOKE-02 trial is the first data presented from several Gilead studies dedicated to exploring Trodelvy’s potential in lung cancer,” said Bill Grossman, MD, PhD, Senior Vice President, Therapeutic Area Head, Gilead Oncology. “These data are very encouraging and confirms our approach for the ongoing Phase 3 EVOKE-03 study of Trodelvy in combination with KEYTRUDA vs. KEYTRUDA monotherapy for patients in first-line PD-L1-high metastatic NSCLC. We look forward to potentially bringing a new treatment option to previously untreated metastatic NSCLC patients.” The safety pro Trodelvy in combination with KEYTRUDA in the EVOKE-02 study was consistent with the known safety of each agent. The most common any-grade TEAEs were diarrhea (54%), anemia (48%), and asthenia (38%). Known key safety events for Trodelvy were not increased with the addition of KEYTRUDA. The immune related adverse events were consistent with the known safety pro KEYTRUDA. Discontinuation rates due to adverse events were 18%. One treatment related death was observed due to sepsis. Gilead entered into two clinical trial collaboration and supply agreements with Merck (known as MSD outside of the United States and Canada) in January 2022 to evaluate the combination of Trodelvy and Merck’s KEYTRUDA in the Phase 2 EVOKE-02 signal-seeking study and the ongoing Phase 3 EVOKE-03 study in first-line NSCLC. The use of Trodelvy for the treatment of NSCLC and the use of Trodelvy in combination with KEYTRUDA for any use is investigational, and the safety and efficacy for these uses have not been established or approved by any regulatory agency globally. Trodelvy has a Boxed Warning for severe or life-threatening neutropenia and severe diarrhea; please see below for additional Important Safety Information. About Metastatic Non-Small Cell Lung Cancer Worldwide, more than two million people were diagnosed with lung cancer in 2020. Non-small cell lung cancer (NSCLC) is the most common type of lung cancer, accounting for up to 85% of diagnoses. It is a cancer with high Trop-2 expression (89 – 100%) and about half of NSCLC cases are diagnosed at the metastatic stage (57%), when treatment is especially difficult. Even in patients whose disease is caught early, half will eventually progress to the metastatic stage within five years. Newly diagnosed patients have several treatment options including platinum-based therapy, checkpoint inhibitors and targeted therapies. About the EVOKE-02 Study The EVOKE-02 study is an open-label, global, multi-center, multi-cohort, Phase 2 study evaluating Trodelvy in combination with KEYTRUDA with or without chemotherapy regardless of PD-L1 expression in patients with advanced or metastatic NSCLC without actionable genomic alterations. Patients were assigned to cohorts according to disease status or PD-L1 expression. Patients were assigned to Cohorts A or B according to Tumor Proportion Score (TPS) status: Cohort A enrolled patients with squamous/non-squamous NSCLC with TPS ≥ 50%. Cohort B enrolled patients with squamous/non-squamous NSCLC with TPS < 50%. Patients enrolled in Cohorts A or B received the combination of Trodelvy and KEYTRUDA. Following enrolment in a safety run-in cohort, patients will be enrolled in Cohorts C or D according to disease status for carboplatin combinations. Cohort C enrolled patients with non-squamous NSCLC with any PD-L1 expression level. Cohort D enrolled patients with squamous NSCLC with any PD-L1 expression level. Patients enrolled in Cohorts C or D received Trodelvy plus KEYTRUDA plus platinum agent. The primary endpoints are objective response rate (ORR) as assessed by independent review per Response Evaluation Criteria in Solid Tumors (RECIST 1.1) and percentage of participants experiencing dose-limiting toxicities (DLTs) per dose level in the safety run-in cohorts. Additional efficacy measures include progression-free survival (PFS), overall survival (OS), duration of response (DoR) and disease control rate (DCR). More information about EVOKE-02 is available at . KEYTRUDA® is a registered trademark of Merck Sharp & Dohme LLC, a subsidiary of Merck & Co., Inc., Rahway, NJ, USA. About Trodelvy Trodelvy® (sacituzumab govitecan-hziy) is a first-in-class Trop-2 directed antibody-drug conjugate. Trop-2 is a cell surface antigen highly expressed in multiple tumor types, including in more than 90% of breast and bladder cancers. Trodelvy is intentionally designed with a proprietary hydrolyzable linker attached to SN-38, a topoisomerase I inhibitor payload. This unique combination delivers potent activity to both Trop-2 expressing cells and the microenvironment. Trodelvy is approved in almost 50 countries, with multiple additional regulatory reviews underway worldwide, for the treatment of adult patients with unresectable locally advanced or metastatic triple-negative breast cancer (TNBC) who have received two or more prior systemic therapies, at least one of them for metastatic disease. Trodelvy is also approved in the U.S. and the European Union to treat certain patients with pre-treated HR+/HER2- metastatic breast cancer. In the U.S., Trodelvy also has accelerated approval for treatment of certain patients with second-line metastatic urothelial cancer (UC); see below for the full U.S. indication for Trodelvy. Trodelvy is also being developed for potential investigational use in other TNBC, HR+/HER2- and metastatic UC populations, as well as a range of tumor types where Trop-2 is highly expressed, including metastatic non-small cell lung cancer (NSCLC), metastatic small cell lung cancer (SCLC), head and neck cancer, and endometrial cancer. U.S. Indications for Trodelvy In the United States, Trodelvy is indicated for the treatment of adult patients with: Unresectable locally advanced or metastatic triple-negative breast cancer (mTNBC) who have received two or more prior systemic therapies, at least one of them for metastatic disease. Unresectable locally advanced or metastatic hormone receptor (HR)-positive, human epidermal growth factor receptor 2 (HER2)-negative (IHC 0, IHC 1+ or IHC 2+/ISH–) breast cancer who have received endocrine-based therapy and at least two additional systemic therapies in the metastatic setting. Locally advanced or metastatic urothelial cancer (mUC) who have previously received a platinum-containing chemotherapy and either programmed death receptor-1 (PD-1) or programmed death-ligand 1 (PD-L1) inhibitor. This indication is approved under accelerated approval based on tumor response rate and duration of response. Continued approval for this indication may be contingent upon verification and description of clinical benefit in confirmatory trials. U.S. Important Safety Information for Trodelvy BOXED WARNING: NEUTROPENIA AND DIARRHEA Severe or life-threatening neutropenia may occur. Withhold Trodelvy for absolute neutrophil count below 1500/mm3 or neutropenic fever. Monitor blood cell counts periodically during treatment. Consider G-CSF for secondary prophylaxis. Initiate anti-infective treatment in patients with febrile neutropenia without delay. Severe diarrhea may occur. Monitor patients with diarrhea and give fluid and electrolytes as needed. At the onset of diarrhea, evaluate for infectious causes and, if negative, promptly initiate loperamide. If severe diarrhea occurs, withhold Trodelvy until resolved to ≤Grade 1 and reduce subsequent doses. CONTRAINDICATIONS Severe hypersensitivity reaction to Trodelvy. WARNINGS AND PRECAUTIONS Neutropenia: Severe, life-threatening, or fatal neutropenia can occur and may require dose modification. Neutropenia occurred in 64% of patients treated with Trodelvy. Grade 3-4 neutropenia occurred in 49% of patients. Febrile neutropenia occurred in 6%. Neutropenic colitis occurred in 1.4%. Withhold Trodelvy for absolute neutrophil count below 1500/mm3 on Day 1 of any cycle or neutrophil count below 1000/mm3 on Day 8 of any cycle. Withhold Trodelvy for neutropenic fever. Administer G-CSF as clinically indicated or indicated in Table 1 of USPI. Diarrhea: Diarrhea occurred in 64% of all patients treated with Trodelvy. Grade 3-4 diarrhea occurred in 11% of patients. One patient had intestinal perforation following diarrhea. Diarrhea that led to dehydration and subsequent acute kidney injury occurred in 0.7% of all patients. Withhold Trodelvy for Grade 3-4 diarrhea and resume when resolved to ≤Grade 1. At onset, evaluate for infectious causes and if negative, promptly initiate loperamide, 4 mg initially followed by 2 mg with every episode of diarrhea for a maximum of 16 mg daily. Discontinue loperamide 12 hours after diarrhea resolves. Additional supportive measures (e.g., fluid and electrolyte substitution) may also be employed as clinically indicated. Patients who exhibit an excessive cholinergic response to treatment can receive appropriate premedication (e.g., atropine) for subsequent treatments. Hypersensitivity and Infusion-Related Reactions: Serious hypersensitivity reactions including life-threatening anaphylactic reactions have occurred with Trodelvy. Severe signs and symptoms included cardiac arrest, hypotension, wheezing, angioedema, swelling, pneumonitis, and skin reactions. Hypersensitivity reactions within 24 hours of dosing occurred in 35% of patients. Grade 3-4 hypersensitivity occurred in 2% of patients. The incidence of hypersensitivity reactions leading to permanent discontinuation of Trodelvy was 0.2%. The incidence of anaphylactic reactions was 0.2%. Pre-infusion medication is recommended. Have medications and emergency equipment to treat such reactions available for immediate use. Observe patients closely for hypersensitivity and infusion-related reactions during each infusion and for at least 30 minutes after completion of each infusion. Permanently discontinue Trodelvy for Grade 4 infusion-related reactions. Nausea and Vomiting: Nausea occurred in 64% of all patients treated with Trodelvy and Grade 3-4 nausea occurred in 3% of these patients. Vomiting occurred in 35% of patients and Grade 3-4 vomiting occurred in 2% of these patients. Premedicate with a two or three drug combination regimen (e.g., dexamethasone with either a 5-HT3 receptor antagonist or an NK1 receptor antagonist as well as other drugs as indicated) for prevention of chemotherapy-induced nausea and vomiting (CINV). Withhold Trodelvy doses for Grade 3 nausea or Grade 3-4 vomiting and resume with additional supportive measures when resolved to Grade ≤1. Additional antiemetics and other supportive measures may also be employed as clinically indicated. All patients should be given take-home medications with clear instructions for prevention and treatment of nausea and vomiting. Increased Risk of Adverse Reactions in Patients with Reduced UGT1A1 Activity: Patients homozygous for the uridine diphosphate-glucuronosyl transferase 1A1 (UGT1A1)*28 allele are at increased risk for neutropenia, febrile neutropenia, and anemia and may be at increased risk for other adverse reactions with Trodelvy. The incidence of Grade 3-4 neutropenia was 58% in patients homozygous for the UGT1A1*28, 49% in patients heterozygous for the UGT1A1*28 allele, and 43% in patients homozygous for the wild-type allele. The incidence of Grade 3-4 anemia was 21% in patients homozygous for the UGT1A1*28 allele, 10% in patients heterozygous for the UGT1A1*28 allele, and 9% in patients homozygous for the wild-type allele. Closely monitor patients with known reduced UGT1A1 activity for adverse reactions. Withhold or permanently discontinue Trodelvy based on clinical assessment of the onset, duration and severity of the observed adverse reactions in patients with evidence of acute early-onset or unusually severe adverse reactions, which may indicate reduced UGT1A1 function. Embryo-Fetal Toxicity: Based on its mechanism of action, Trodelvy can cause teratogenicity and/or embryo-fetal lethality when administered to a pregnant woman. Trodelvy contains a genotoxic component, SN-38, and targets rapidly dividing cells. Advise pregnant women and females of reproductive potential of the potential risk to a fetus. Advise females of reproductive potential to use effective contraception during treatment with Trodelvy and for 6 months after the last dose. Advise male patients with female partners of reproductive potential to use effective contraception during treatment with Trodelvy and for 3 months after the last dose. ADVERSE REACTIONS In the pooled safety population, the most common (≥ 25%) adverse reactions including laboratory abnormalities were decreased leukocyte count (84%), decreased neutrophil count (75%), decreased hemoglobin (69%), diarrhea (64%), nausea (64%), decreased lymphocyte count (63%), fatigue (51%), alopecia (45%), constipation (37%), increased glucose (37%), decreased albumin (35%), vomiting (35%), decreased appetite (30%), decreased creatinine clearance (28%), increased alkaline phosphatase (28%), decreased magnesium (27%), decreased potassium (26%), and decreased sodium (26%). In the ASCENT study (locally advanced or metastatic triple-negative breast cancer), the most common adverse reactions (incidence ≥25%) were fatigue, diarrhea, nausea, alopecia, constipation, vomiting, abdominal pain, and decreased appetite. The most frequent serious adverse reactions (SAR) (>1%) were neutropenia (7%), diarrhea (4%), and pneumonia (3%). SAR were reported in 27% of patients, and 5% discontinued therapy due to adverse reactions. The most common Grade 3-4 lab abnormalities (incidence ≥25%) in the ASCENT study were reduced neutrophils, leukocytes, and lymphocytes. In the TROPiCS-02 study (locally advanced or metastatic HR-positive, HER2-negative breast cancer), the most common adverse reactions (incidence ≥25%) were diarrhea, fatigue, nausea, alopecia, and constipation. The most frequent serious adverse reactions (SAR) (>1%) were diarrhea (5%), febrile neutropenia (4%), neutropenia (3%), abdominal pain, colitis, neutropenic colitis, pneumonia, and vomiting (each 2%). SAR were reported in 28% of patients, and 6% discontinued therapy due to adverse reactions. The most common Grade 3-4 lab abnormalities (incidence ≥25%) in the TROPiCS-02 study were reduced neutrophils and leukocytes. In the TROPHY study (locally advanced or metastatic urothelial cancer), the most common adverse reactions (incidence ≥25%) were diarrhea, fatigue, nausea, any infection, alopecia, decreased appetite, constipation, vomiting, rash, and abdominal pain. The most frequent serious adverse reactions (SAR) (≥5%) were infection (18%), neutropenia (12%, including febrile neutropenia in 10%), acute kidney injury (6%), urinary tract infection (6%), and sepsis or bacteremia (5%). SAR were reported in 44% of patients, and 10% discontinued due to adverse reactions. The most common Grade 3-4 lab abnormalities (incidence ≥25%) in the TROPHY study were reduced neutrophils, leukocytes, and lymphocytes. DRUG INTERACTIONS UGT1A1 Inhibitors: Concomitant administration of Trodelvy with inhibitors of UGT1A1 may increase the incidence of adverse reactions due to potential increase in systemic exposure to SN-38. Avoid administering UGT1A1 inhibitors with Trodelvy. UGT1A1 Inducers: Exposure to SN-38 may be reduced in patients concomitantly receiving UGT1A1 enzyme inducers. Avoid administering UGT1A1 inducers with Trodelvy. Please see full Prescribing Information, including BOXED WARNING. About Gilead Sciences Gilead Sciences, Inc. is a biopharmaceutical company that has pursued and achieved breakthroughs in medicine for more than three decades, with the goal of creating a healthier world for all people. The company is committed to advancing innovative medicines to prevent and treat life-threatening diseases, including HIV, viral hepatitis, COVID-19, and cancer. Gilead operates in more than 35 countries worldwide, with headquarters in Foster City, California. Forward-Looking Statements This press release includes forward-looking statements within the meaning of the Private Securities Litigation Reform Act of 1995 that are subject to risks, uncertainties and other factors, including Gilead’s ability to initiate, progress or complete clinical trials within currently anticipated timelines or at all, and the possibility of unfavorable results from ongoing or additional clinical trials, including those involving Trodelvy; uncertainties relating to regulatory applications for Trodelvy and related filing and approval timelines, including with respect pending or potential applications for the treatment of metastatic TNBC, HR+/HER2- metastatic breast cancer, metastatic UC, metastatic NSCLC, metastatic SCLC, head and neck cancer, and endometrial cancer, in the currently anticipated timelines or at all; Gilead’s ability to receive regulatory approvals for such indications in a timely manner or at all, and the risk that any such approvals may be subject to significant limitations on use; the possibility that Gilead may make a strategic decision to discontinue development of Trodelvy for such indications and as a result, Trodelvy may never be commercialized for these indications; and any assumptions underlying any of the foregoing. These and other risks, uncertainties and other factors are described in detail in Gilead’s Quarterly Report on Form 10-Q for the quarter ended June 30, 2023, as filed with the U.S. Securities and Exchange Commission. These risks, uncertainties and other factors could cause actual results to differ materially from those referred to in the forward-looking statements. All statements other than statements of historical fact are statements that could be deemed forward-looking statements. The reader is cautioned that any such forward-looking statements are not guarantees of future performance and involve risks and uncertainties, and is cautioned not to place undue reliance on these forward-looking statements. All forward-looking statements are based on information currently available to Gilead, and Gilead assumes no obligation and disclaims any intent to update any such forward-looking statements. U.S. Prescribing Information for Trodelvy including BOXED WARNING, is available at . Trodelvy, Gilead and the Gilead logo are trademarks of Gilead Sciences, Inc., or its related companies. For more information about Gilead, please visit the company’s website at or call Gilead Public Affairs at 1-800-GILEAD-5 or 1-650-574-3000. View source version on businesswire.com: Contacts Jacquie Ross, Investors investor_relations@gilead.com Meaghan Smith, Media public_affairs@gilead.com Source: Gilead Sciences, Inc. View this news release online at:

Clinical ResultPhase 2Drug ApprovalPhase 3Accelerated Approval

17 May 2023

·www.biospace.com

Gilead and Kite Oncology to Showcase Advances Across the Pipeline Aiming to Address Unmet Needs in Cancer Care at ASCO 2023

– Data Across 30 Abstracts Reinforce Leadership in Metastatic Breast Cancer and Demonstrate Breadth of Pipeline Across Lung, Hematologic, Genitourinary, Gastrointestinal, Gynecological and Other Solid Tumors – – Late-Breaking Presentation to Detail Overall Survival Results for Yescarta® CAR T-Cell Therapy, Showing Statistical Improvement Over Standard of Care for Initial Treatment of Relapsed/Refractory Large B-Cell Lymphoma – – Updated Interim Results from Phase 2 ARC-7 Study of Fc-Silent Anti-TIGIT Monoclonal Antibody Domvanalimab to be Featured in Oral Presentation – FOSTER CITY, Calif. & SANTA MONICA, Calif.--(BUSINESS WIRE)-- Gilead Sciences, Inc. (Nasdaq: GILD) and Kite, a Gilead Company, will present 30 abstracts during the 2023 American Society of Clinical Oncology (ASCO) Annual Meeting. These data reinforce the strength of Gilead and Kite Oncology’s transformative science in hard-to-treat cancers. “The breadth of data being presented at ASCO is a testament to our commitment in helping to bring more life to people with cancer,” said Bill Grossman, MD, PhD, Senior Vice President, Therapeutic Area Head, Gilead Oncology. “We are determined to deliver the best outcomes for patients and are proud to highlight the pan-tumor efficacy of Trodelvy as well as our growing presence across lung cancer and many other tumor types.” New Data Reinforce Pan-Tumor Efficacy of Trodelvy® Final overall survival (OS) results from the Phase 3 TROPiCS-02 study for Trodelvy® (sacituzumab govitecan-hziy) in HR+/HER2- metastatic breast cancer (mBC) will be presented in an oral session. Gilead will also share data evaluating Trodelvy in metastatic urothelial cancer (UC); in the U.S., Trodelvy currently has an accelerated approval for the treatment of certain patients with second-line metastatic UC. Additionally, Gilead will present the first Phase 2 data evaluating Trodelvy as a potential therapy in advanced endometrial cancer. Kite Therapies Continue to Advance the Standard of Care in Leukemia and Lymphoma A late-breaking oral presentation from the landmark Phase 3 ZUMA-7 study will highlight OS results for Yescarta® (axicabtagene ciloleucel) versus standard of care for initial treatment of adult patients with relapsed/refractory large B-cell lymphoma (LBCL) within 12 months of completion of first-line therapy. Further analysis of the pivotal ZUMA-3 study in adult B-cell acute lymphoblastic leukemia, in addition to real-world evidence in follicular lymphoma and mantle cell lymphoma, will also be presented. “The data that will be presented at ASCO represent another significant step forward in our goal of bringing the hope of survival to more patients through our innovative cell therapies,” said Frank Neumann, MD, PhD, SVP, Kite’s Global Head of Clinical Development. “We are particularly excited to share our overall survival data from the pivotal ZUMA-7 study for Yescarta for initial treatment of relapsed/refractory large B-cell lymphoma, the first and only treatment in 30 years to demonstrate a statistically significant improvement in overall survival versus historical standard of care in this patient population.” Gilead Highlights Emerging Lung Cancer Pipeline, Progress in Solid Tumors Beyond our ongoing late-stage development program evaluating the investigational use of Trodelvy in non-small cell lung cancer (NSCLC), Gilead will highlight clinical data and trial updates from several other lung cancer trials. This includes an oral presentation with our partner Arcus Biosciences, on the updated interim analysis of ARC-7, which will detail updated efficacy and safety results for domvanalimab, an Fc-silent anti-TIGIT monoclonal antibody, in first-line NSCLC with PD-L1 tumor proportion score (TPS) ≥50% without epidermal growth factor receptor or anaplastic lymphoma kinase (EGFR/ALK) mutations. ARC-7 is an approximately 150-patient randomized Phase 2 study evaluating domvanalimab plus anti-PD-1 antibody zimberelimab (doublet) and domvanalimab plus zimberelimab and etrumadenant, an A2a/b adenosine receptor antagonist (triplet), versus zimberelimab alone. Further highlighting progress being made across Gilead’s oncology pipeline, trial updates will be shared from ongoing studies in lung cancer, triple-negative breast cancer, UC and several other solid tumors. Summary of Presentations Accepted abstracts at the 2023 ASCO Annual Meeting include (all times CDT): Tumor Types Abstract Title Breast Cancer Abstract #1003 (Oral Session) Monday, June 5 12:30 PM Final Overall Survival (OS) Analysis from the Phase 3 TROPiCS-02 Study of Sacituzumab Govitecan (SG) in Patients (Pts) with Hormone Receptor–Positive/HER2-Negative (HR+/HER2–) Metastatic Breast Cancer (mBC) Abstract #1082 Sunday, June 4 8:00-11:00 AM Trop-2 mRNA Expression and Association with Clinical Outcomes with Sacituzumab Govitecan (SG) in Patients with HR+/HER2– Metastatic Breast Cancer (mBC): Biomarker Results from the Phase 3 TROPiCS-02 Study Abstract #TPS619 (TiP) Sunday, June 4 8:00-11:00 AM ASCENT-05/Optimice-RD (AFT-65): Phase 3, Randomized, Open-Label Study of Adjuvant Sacituzumab Govitecan (SG) + Pembrolizumab (Pembro) vs. Pembro ± Capecitabine (Cape) in Patients (Pts) with Triple-Negative Breast Cancer (TNBC) and Residual Disease after Neoadjuvant Therapy (NAT) and Surgery Abstract #TPS1130 (TiP) Sunday, June 4 8:00-11:00 AM A Phase 2 Randomized Study of Magrolimab Combination Therapy in Adult Patients with Unresectable Locally Advanced or Metastatic Triple-Negative Breast Cancer (mTNBC): ELEVATE TNBC ePublication #e18871 Real-World Clinical Outcomes in Patients (Pts) with HR+/HER2- Metastatic Breast Cancer (mBC) Treated with Chemotherapy (CT) in the U.S. ePublication e18879 Real-World Outcomes in Patients (Pts) with Metastatic Triple-Negative Breast Cancer (mTNBC) Treated with Sacituzumab Govitecan (SG) in 2L+ in the U.S. ePublication e18798 Canadian (CAN) Real-World Outcomes for Relapsed/Recurrent (R/R) Metastatic Triple-Negative Breast Cancer (mTNBC) in the First-Line or Later (1L+) Setting By Early or Late Recurrence Status B-cell Lymphomas Abstract #LBA107 (Oral Session) Monday, June 5 10:09 AM Primary Overall Survival Analysis of the Phase 3 Randomized ZUMA-7 Study of Axicabtagene Ciloleucel versus Standard-of-Care Therapy in Relapsed/Refractory Large B-Cell Lymphoma Abstract #7547 Monday, June 5 8:00-11:00 AM Circulating Tumor DNA (ctDNA) by ClonoSEQ to Monitor Residual Disease after Axicabtagene Ciloleucel (Axi-Cel) in Large B-Cell Lymphoma (LBCL) Abstract #TPS7578 (TiP) Monday, June 5 8:00-11:00 AM ZUMA-23: A Global, Phase 3, Randomized Controlled Study of Axicabtagene Ciloleucel versus Standard of Care as First-Line Therapy in Patients with High-Risk Large B-Cell Lymphoma Mantle Cell Lymphoma Abstract #7507 (Oral Session) Tuesday, June 6 11:57 AM Real-World Outcomes of Brexucabtagene Autoleucel (Brexu-cel) for Relapsed or Refractory (R/R) Mantle Cell Lymphoma (MCL): A CIBMTR Subgroup Analysis by Prior Treatment Lung Cancer Abstract #397600 (Oral Session) Saturday, June 3 12:48 PM ARC-7: Randomized Phase 2 Study of Domvanalimab + Zimberelimab +/- Etrumadenant vs Zimberelimab in First-Line, Metastatic, PD-L1-High Non-Small Cell Lung Cancer (NSCLC) Abstract #9034 Sunday, June 4 8:00-11:00 AM Molecular Characterization of Resistance to Immune Checkpoint Inhibitor and Chemotherapy Treatment in Advanced Non-Small Cell Lung Cancer Abstract #TPS9155 (TiP) Sunday, June 4 8:00-11:00 AM VELOCITY-Lung: A Phase (Ph) 2 Study Evaluating Safety and Efficacy of Domvanalimab (Dom) + Zimberelimab (Zim) + Sacituzumab Govitecan (SG), or Etrumadenant (Etruma) + Dom + Zim, or Etruma + Zim in Patients (Pts) with Treatment-Naïve Metastatic Non-Small Cell Lung Cancer (mNSCLC) Abstract #TPS9141 (TiP) Sunday, June 4 8:00-11:00 AM STAR-121: A Phase 3, Randomized Study of Domvanalimab (DOM) and Zimberelimab (ZIM) in Combination with Chemotherapy vs. Pembrolizumab (Pembro) and Chemotherapy in Patients with Untreated Metastatic Non-Small Cell Lung Cancer (mNSCLC) with No Actionable Gene Alterations Abstract #TPS9148 (TiP) Sunday, June 4 8:00-11:00 AM ARC-10: A phase 3 Study to Evaluate Zimberelimab + Domvanalimab vs. Pembrolizumab in Front-Line, PD-L1-High, Locally Advanced or Metastatic Non–Small Cell Lung Cancer Abstract #TPS8609 (TiP) Sunday, June 4 8:00-11:00 AM Phase 3 Trial of Durvalumab Combined with Domvanalimab Following Concurrent Chemoradiotherapy (cCRT) in Patients with Unresectable Stage III NSCLC (PACIFIC-8) Myelodysplastic Syndromes & Acute Myeloid Leukemia ePublication Abstract #e19072 Incidence of Drug-Induced Myelosuppression and Associated Adverse Events (AEs), Quality of Life (QoL), and Medical Resource Use (MRU) in Myelodysplastic Syndromes (MDS) and Acute Myeloid Leukemia (AML) Acute Lymphoblastic Leukemia Abstract #7023 Monday, June 5 8:00-11:00 AM Impact of Age, Prior Therapies, and Subsequent Transplant on Long-Term Outcomes of Adults with Relapsed or Refractory B-Cell Acute Lymphoblastic Leukemia (R/R B-ALL) Treated with Brexucabtagene Autoleucel (Brexu-Cel) In ZUMA-3 Endometrial Cancer Abstract #5610 Monday, June 5 1:15-4:15 PM TROPiCS-03, A Phase 2 Basket Study of Sacituzumab Govitecan (SG) in Patients (Pts) with Metastatic Solid Tumors: Early Analysis in Pts with Advanced/Metastatic Endometrial Cancer (EC) Follicular Lymphoma Abstract #7509 Monday, June 5 8:00-11:00 AM 1:15-2:45 PM (Poster Discussion) Real-World Early Outcomes of Axicabtagene Ciloleucel for Relapsed or Refractory (R/R) Follicular Lymphoma (FL) Abstract #TPS7579 (TiP) Monday, June 5 8:00-11:00 AM ZUMA-22: A Phase 3, Randomized Controlled Study of Axicabtagene Ciloleucel (Axi-Cel) versus Standard-Of-Care Therapy in Patients with Relapsed or Refractory (R/R) Follicular Lymphoma (FL) Urothelial Cancer Abstract #4514 Saturday, June 3 8:00-11:00AM 3:00-4:30 PM (Poster Discussion) Safety Analysis by UGT1A1 Status of TROPHY-U-01 Cohort 1, a Phase 2 Study of Sacituzumab Govitecan (SG) in Patients (pts) With Metastatic Urothelial Cancer (mUC) who Progressed after Platinum (PT)-Based Chemotherapy and a Checkpoint Inhibitor (CPI) Abstract #4579 Saturday, June 3 8:00-11:00 AM Efficacy of Sacituzumab Govitecan (SG) in Locally Advanced (LA) or Metastatic Urothelial Cancer (mUC) By Trophoblast Cell Surface Antigen 2 (Trop-2) Expression Abstract #TPS4611 (TiP) Saturday, June 3 8:00-11:00 AM TROPHY-U-01 Cohort 4 (C4): Sacituzumab Govitecan (SG) in Combination with Cisplatin (Cis) as First-Line (1L) Therapy, Followed by Maintenance Avelumab Plus (+) SG or Zimberelimab (Zim) + SG in Patients (Pts) with Treatment (Tx)-Naïve Metastatic Urothelial Cancer (mUC) Gastrointestinal Cancers Abstract #TPS4206 (TiP) Monday, June 5 8:00-11:00 AM STAR-221: A Randomized, Open-Label, Multicenter, Phase 3 Trial of Domvanalimab, Zimberelimab, and Chemotherapy vs. Nivolumab and Chemotherapy in Previously Untreated, Locally Advanced, Unresectable or Metastatic Gastric, Gastroesophageal Junction, and Esophageal Adenocarcinoma Head And Neck Cancer Abstract #TPS6102 (TiP) Monday, June 5 1:15-4:15 PM A Phase 2 Study of Magrolimab Combination Therapy in Patients with Recurrent or Metastatic Head and Neck Squamous Cell Carcinoma (ELEVATE HNSCC) Advanced Solid Tumors Abstract #2524 Saturday, June 3 8:00-11:00 AM 3:00-4:30 PM (Poster Discussion) A Phase 1 Study of AGEN2373, a CD137 Agonist Antibody Designed to Avoid Hepatoxicity, in Patients with Advanced Solid Tumors Abstract #TPS4602 (TiP) Saturday, June 3 8:00-11:00 AM ARC-20: A Phase 1 Dose-Escalation and Dose-Expansion Study to Investigate the Safety, Tolerability, and Pharmacology of HIF-2α Inhibitor AB521 Monotherapy in Patients with Clear Cell Renal Cell Carcinoma and Other Solid Tumors Abstract #TPS9142 (TiP) Sunday, June 4 8:00-11:00 AM A Phase 2 Multi-Arm Study of Magrolimab in Combination with Docetaxel in Patients with Locally Advanced or Metastatic Solid Tumors (ELEVATE Lung and UC) Domvanalimab, etrumadenant, magrolimab, zimberelimab and Trodelvy for NSCLC and endometrial cancer are investigational and are not approved by the U.S. Food and Drug Administration or any other regulatory authority. Their safety and efficacy have not been established. About Trodelvy Trodelvy® (sacituzumab govitecan-hziy) is a first-in-class Trop-2 directed antibody-drug conjugate. Trop-2 is a cell surface antigen highly expressed in multiple tumor types, including in more than 90% of breast and bladder cancers. Trodelvy is intentionally designed with a proprietary hydrolyzable linker attached to SN-38, a topoisomerase I inhibitor payload. This unique combination delivers potent activity to both Trop-2 expressing cells and the microenvironment. Trodelvy is approved in more than 40 countries, with multiple additional regulatory reviews underway worldwide, for the treatment of adult patients with unresectable locally advanced or metastatic triple-negative breast cancer (TNBC) who have received two or more prior systemic therapies, at least one of them for metastatic disease. Trodelvy is also approved in the U.S. to treat certain patients with pre-treated HR+/HER2- metastatic breast cancer and has an accelerated approval for treatment of certain patients with second-line metastatic urothelial cancer; see below for full indication statements. Trodelvy is also being developed for potential investigational use in other TNBC, HR+/HER2- and metastatic UC populations, as well as a range of tumor types where Trop-2 is highly expressed, including metastatic non-small cell lung cancer (NSCLC), metastatic small cell lung cancer (SCLC), head and neck cancer, and endometrial cancer. U.S. Indications for Trodelvy In the United States, Trodelvy is indicated for the treatment of adult patients with: Unresectable locally advanced or metastatic triple-negative breast cancer (mTNBC) who have received two or more prior systemic therapies, at least one of them for metastatic disease. Unresectable locally advanced or metastatic hormone receptor (HR)-positive, human epidermal growth factor receptor 2 (HER2)-negative (IHC 0, IHC 1+ or IHC 2+/ISH–) breast cancer who have received endocrine-based therapy and at least two additional systemic therapies in the metastatic setting. Locally advanced or metastatic urothelial cancer (mUC) who have previously received a platinum-containing chemotherapy and either programmed death receptor-1 (PD-1) or programmed death-ligand 1 (PD-L1) inhibitor. This indication is approved under accelerated approval based on tumor response rate and duration of response. Continued approval for this indication may be contingent upon verification and description of clinical benefit in confirmatory trials. U.S. Important Safety Information for Trodelvy BOXED WARNING: NEUTROPENIA AND DIARRHEA Severe or life-threatening neutropenia may occur. Withhold Trodelvy for absolute neutrophil count below 1500/mm3 or neutropenic fever. Monitor blood cell counts periodically during treatment. Consider G-CSF for secondary prophylaxis. Initiate anti-infective treatment in patients with febrile neutropenia without delay. Severe diarrhea may occur. Monitor patients with diarrhea and give fluid and electrolytes as needed. At the onset of diarrhea, evaluate for infectious causes and, if negative, promptly initiate loperamide. If severe diarrhea occurs, withhold Trodelvy until resolved to ≤Grade 1 and reduce subsequent doses. CONTRAINDICATIONS Severe hypersensitivity reaction to Trodelvy. WARNINGS AND PRECAUTIONS Neutropenia: Severe, life-threatening, or fatal neutropenia can occur and may require dose modification. Neutropenia occurred in 64% of patients treated with Trodelvy. Grade 3-4 neutropenia occurred in 49% of patients. Febrile neutropenia occurred in 6%. Neutropenic colitis occurred in 1.4%. Withhold Trodelvy for absolute neutrophil count below 1500/mm3 on Day 1 of any cycle or neutrophil count below 1000/mm3 on Day 8 of any cycle. Withhold Trodelvy for neutropenic fever. Administer G-CSF as clinically indicated or indicated in Table 1 of USPI. Diarrhea: Diarrhea occurred in 64% of all patients treated with Trodelvy. Grade 3-4 diarrhea occurred in 11% of patients. One patient had intestinal perforation following diarrhea. Diarrhea that led to dehydration and subsequent acute kidney injury occurred in 0.7% of all patients. Withhold Trodelvy for Grade 3-4 diarrhea and resume when resolved to ≤Grade 1. At onset, evaluate for infectious causes and if negative, promptly initiate loperamide, 4 mg initially followed by 2 mg with every episode of diarrhea for a maximum of 16 mg daily. Discontinue loperamide 12 hours after diarrhea resolves. Additional supportive measures (e.g., fluid and electrolyte substitution) may also be employed as clinically indicated. Patients who exhibit an excessive cholinergic response to treatment can receive appropriate premedication (e.g., atropine) for subsequent treatments. Hypersensitivity and Infusion-Related Reactions: Serious hypersensitivity reactions including life-threatening anaphylactic reactions have occurred with Trodelvy. Severe signs and symptoms included cardiac arrest, hypotension, wheezing, angioedema, swelling, pneumonitis, and skin reactions. Hypersensitivity reactions within 24 hours of dosing occurred in 35% of patients. Grade 3-4 hypersensitivity occurred in 2% of patients. The incidence of hypersensitivity reactions leading to permanent discontinuation of Trodelvy was 0.2%. The incidence of anaphylactic reactions was 0.2%. Pre-infusion medication is recommended. Have medications and emergency equipment to treat such reactions available for immediate use. Observe patients closely for hypersensitivity and infusion-related reactions during each infusion and for at least 30 minutes after completion of each infusion. Permanently discontinue Trodelvy for Grade 4 infusion-related reactions. Nausea and Vomiting: Nausea occurred in 64% of all patients treated with Trodelvy and Grade 3-4 nausea occurred in 3% of these patients. Vomiting occurred in 35% of patients and Grade 3-4 vomiting occurred in 2% of these patients. Premedicate with a two or three drug combination regimen (e.g., dexamethasone with either a 5-HT3 receptor antagonist or an NK1 receptor antagonist as well as other drugs as indicated) for prevention of chemotherapy-induced nausea and vomiting (CINV). Withhold Trodelvy doses for Grade 3 nausea or Grade 3-4 vomiting and resume with additional supportive measures when resolved to Grade ≤1. Additional antiemetics and other supportive measures may also be employed as clinically indicated. All patients should be given take-home medications with clear instructions for prevention and treatment of nausea and vomiting. Increased Risk of Adverse Reactions in Patients with Reduced UGT1A1 Activity: Patients homozygous for the uridine diphosphate-glucuronosyl transferase 1A1 (UGT1A1)*28 allele are at increased risk for neutropenia, febrile neutropenia, and anemia and may be at increased risk for other adverse reactions with Trodelvy. The incidence of Grade 3-4 neutropenia was 58% in patients homozygous for the UGT1A1*28, 49% in patients heterozygous for the UGT1A1*28 allele, and 43% in patients homozygous for the wild-type allele. The incidence of Grade 3-4 anemia was 21% in patients homozygous for the UGT1A1*28 allele, 10% in patients heterozygous for the UGT1A1*28 allele, and 9% in patients homozygous for the wild-type allele. Closely monitor patients with known reduced UGT1A1 activity for adverse reactions. Withhold or permanently discontinue Trodelvy based on clinical assessment of the onset, duration and severity of the observed adverse reactions in patients with evidence of acute early-onset or unusually severe adverse reactions, which may indicate reduced UGT1A1 function. Embryo-Fetal Toxicity: Based on its mechanism of action, Trodelvy can cause teratogenicity and/or embryo-fetal lethality when administered to a pregnant woman. Trodelvy contains a genotoxic component, SN-38, and targets rapidly dividing cells. Advise pregnant women and females of reproductive potential of the potential risk to a fetus. Advise females of reproductive potential to use effective contraception during treatment with Trodelvy and for 6 months after the last dose. Advise male patients with female partners of reproductive potential to use effective contraception during treatment with Trodelvy and for 3 months after the last dose. ADVERSE REACTIONS In the pooled safety population, the most common (≥ 25%) adverse reactions including laboratory abnormalities were decreased leukocyte count (84%), decreased neutrophil count (75%), decreased hemoglobin (69%), diarrhea (64%), nausea (64%), decreased lymphocyte count (63%), fatigue (51%), alopecia (45%), constipation (37%), increased glucose (37%), decreased albumin (35%), vomiting (35%), decreased appetite (30%), decreased creatinine clearance (28%), increased alkaline phosphatase (28%), decreased magnesium (27%), decreased potassium (26%), and decreased sodium (26%). In the ASCENT study (locally advanced or metastatic triple-negative breast cancer), the most common adverse reactions (incidence ≥25%) were fatigue, diarrhea, nausea, alopecia, constipation, vomiting, abdominal pain, and decreased appetite. The most frequent serious adverse reactions (SAR) (>1%) were neutropenia (7%), diarrhea (4%), and pneumonia (3%). SAR were reported in 27% of patients, and 5% discontinued therapy due to adverse reactions. The most common Grade 3-4 lab abnormalities (incidence ≥25%) in the ASCENT study were reduced neutrophils, leukocytes, and lymphocytes. In the TROPiCS-02 study (locally advanced or metastatic HR-positive, HER2-negative breast cancer), the most common adverse reactions (incidence ≥25%) were diarrhea, fatigue, nausea, alopecia, and constipation. The most frequent serious adverse reactions (SAR) (>1%) were diarrhea (5%), febrile neutropenia (4%), neutropenia (3%), abdominal pain, colitis, neutropenic colitis, pneumonia, and vomiting (each 2%). SAR were reported in 28% of patients, and 6% discontinued therapy due to adverse reactions. The most common Grade 3-4 lab abnormalities (incidence ≥25%) in the TROPiCS-02 study were reduced neutrophils and leukocytes. In the TROPHY study (locally advanced or metastatic urothelial cancer), the most common adverse reactions (incidence ≥25%) were diarrhea, fatigue, nausea, any infection, alopecia, decreased appetite, constipation, vomiting, rash, and abdominal pain. The most frequent serious adverse reactions (SAR) (≥5%) were infection (18%), neutropenia (12%, including febrile neutropenia in 10%), acute kidney injury (6%), urinary tract infection (6%), and sepsis or bacteremia (5%). SAR were reported in 44% of patients, and 10% discontinued due to adverse reactions. The most common Grade 3-4 lab abnormalities (incidence ≥25%) in the TROPHY study were reduced neutrophils, leukocytes, and lymphocytes. DRUG INTERACTIONS UGT1A1 Inhibitors: Concomitant administration of Trodelvy with inhibitors of UGT1A1 may increase the incidence of adverse reactions due to potential increase in systemic exposure to SN-38. Avoid administering UGT1A1 inhibitors with Trodelvy. UGT1A1 Inducers: Exposure to SN-38 may be reduced in patients concomitantly receiving UGT1A1 enzyme inducers. Avoid administering UGT1A1 inducers with Trodelvy. Please see full Prescribing Information, including BOXED WARNING. About Yescarta Please see full Prescribing Information, including BOXED WARNING and Medication Guide. YESCARTA is a CD19-directed genetically modified autologous T cell immunotherapy indicated for the treatment of: Adult patients with large B-cell lymphoma that is refractory to first-line chemoimmunotherapy or that relapses within 12 months of first-line chemoimmunotherapy. Adult patients with relapsed or refractory large B-cell lymphoma after two or more lines of systemic therapy, including diffuse large B-cell lymphoma (DLBCL) not otherwise specified, primary mediastinal large B-cell lymphoma, high grade B-cell lymphoma, and DLBCL arising from follicular lymphoma. Limitations of Use: YESCARTA is not indicated for the treatment of patients with primary central nervous system lymphoma. Adult patients with relapsed or refractory follicular lymphoma (FL) after two or more lines of systemic therapy. This indication is approved under accelerated approval based on response rate. Continued approval for this indication may be contingent upon verification and description of clinical benefit in confirmatory trial(s). U.S. IMPORTANT SAFETY INFORMATION BOXED WARNING: CYTOKINE RELEASE SYNDROME AND NEUROLOGIC TOXICITIES Cytokine Release Syndrome (CRS), including fatal or life-threatening reactions, occurred in patients receiving YESCARTA. Do not administer YESCARTA to patients with active infection or inflammatory disorders. Treat severe or life-threatening CRS with tocilizumab or tocilizumab and corticosteroids. Neurologic toxicities, including fatal or life-threatening reactions, occurred in patients receiving YESCARTA, including concurrently with CRS or after CRS resolution. Monitor for neurologic toxicities after treatment with YESCARTA. Provide supportive care and/or corticosteroids as needed. YESCARTA is available only through a restricted program under a Risk Evaluation and Mitigation Strategy (REMS) called the YESCARTA and TECARTUS REMS Program. CYTOKINE RELEASE SYNDROME (CRS) CRS, including fatal or life-threatening reactions, occurred. CRS occurred in 90% (379/422) of patients with non-Hodgkin lymphoma (NHL), including ≥ Grade 3 in 9%. CRS occurred in 93% (256/276) of patients with large B-cell lymphoma (LBCL), including ≥ Grade 3 in 9%. Among patients with LBCL who died after receiving YESCARTA, 4 had ongoing CRS events at the time of death. For patients with LBCL in ZUMA-1, the median time to onset of CRS was 2 days following infusion (range: 1-12 days) and the median duration was 7 days (range: 2-58 days). For patients with LBCL in ZUMA-7, the median time to onset of CRS was 3 days following infusion (range: 1-10 days) and the median duration was 7 days (range: 2-43 days). CRS occurred in 84% (123/146) of patients with indolent non-Hodgkin lymphoma (iNHL) in ZUMA-5, including ≥ Grade 3 in 8%. Among patients with iNHL who died after receiving YESCARTA, 1 patient had an ongoing CRS event at the time of death. The median time to onset of CRS was 4 days (range: 1-20 days) and median duration was 6 days (range: 1-27 days) for patients with iNHL. Key manifestations of CRS (≥ 10%) in all patients combined included fever (85%), hypotension (40%), tachycardia (32%), chills (22%), hypoxia (20%), headache (15%), and fatigue (12%). Serious events that may be associated with CRS include cardiac arrhythmias (including atrial fibrillation and ventricular tachycardia), renal insufficiency, cardiac failure, respiratory failure, cardiac arrest, capillary leak syndrome, multi-organ failure, and hemophagocytic lymphohistiocytosis/macrophage activation syndrome. The impact of tocilizumab and/or corticosteroids on the incidence and severity of CRS was assessed in 2 subsequent cohorts of LBCL patients in ZUMA-1. Among patients who received tocilizumab and/or corticosteroids for ongoing Grade 1 events, CRS occurred in 93% (38/41), including 2% (1/41) with Grade 3 CRS; no patients experienced a Grade 4 or 5 event. The median time to onset of CRS was 2 days (range: 1-8 days) and the median duration of CRS was 7 days (range: 2-16 days). Prophylactic treatment with corticosteroids was administered to a cohort of 39 patients for 3 days beginning on the day of infusion of YESCARTA. Thirty-one of the 39 patients (79%) developed CRS and were managed with tocilizumab and/or therapeutic doses of corticosteroids with no patients developing ≥ Grade 3 CRS. The median time to onset of CRS was 5 days (range: 1-15 days) and the median duration of CRS was 4 days (range: 1-10 days). Although there is no known mechanistic explanation, consider the risk and benefits of prophylactic corticosteroids in the context of pre-existing comorbidities for the individual patient and the potential for the risk of Grade 4 and prolonged neurologic toxicities. Ensure that 2 doses of tocilizumab are available prior to YESCARTA infusion. Monitor patients for signs and symptoms of CRS at least daily for 7 days at the certified healthcare facility, and for 4 weeks thereafter. Counsel patients to seek immediate medical attention should signs or symptoms of CRS occur at any time. At the first sign of CRS, institute treatment with supportive care, tocilizumab, or tocilizumab and corticosteroids as indicated. NEUROLOGIC TOXICITIES Neurologic toxicities (including immune effector cell-associated neurotoxicity syndrome) that were fatal or life-threatening occurred. Neurologic toxicities occurred in 78% (330/422) of all patients with NHL receiving YESCARTA, including ≥ Grade 3 in 25%. Neurologic toxicities occurred in 87% (94/108) of patients with LBCL in ZUMA-1, including ≥ Grade 3 in 31% and in 74% (124/168) of patients in ZUMA-7 including ≥ Grade 3 in 25%. The median time to onset was 4 days (range: 1-43 days) and the median duration was 17 days for patients with LBCL in ZUMA-1. The median time to onset for neurologic toxicity was 5 days (range:1- 133 days) and median duration was 15 days in patients with LBCL in ZUMA-7. Neurologic toxicities occurred in 77% (112/146) of patients with iNHL, including ≥ Grade 3 in 21%. The median time to onset was 6 days (range: 1-79 days) and the median duration was 16 days. Ninety-eight percent of all neurologic toxicities in patients with LBCL and 99% of all neurologic toxicities in patients with iNHL occurred within the first 8 weeks of YESCARTA infusion. Neurologic toxicities occurred within the first 7 days of infusion for 87% of affected patients with LBCL and 74% of affected patients with iNHL. The most common neurologic toxicities (≥ 10%) in all patients combined included encephalopathy (50%), headache (43%), tremor (29%), dizziness (21%), aphasia (17%), delirium (15%), and insomnia (10%). Prolonged encephalopathy lasting up to 173 days was noted. Serious events, including aphasia, leukoencephalopathy, dysarthria, lethargy, and seizures occurred. Fatal and serious cases of cerebral edema and encephalopathy, including late-onset encephalopathy, have occurred. The impact of tocilizumab and/or corticosteroids on the incidence and severity of neurologic toxicities was assessed in 2 subsequent cohorts of LBCL patients in ZUMA-1. Among patients who received corticosteroids at the onset of Grade 1 toxicities, neurologic toxicities occurred in 78% (32/41) and 20% (8/41) had Grade 3 neurologic toxicities; no patients experienced a Grade 4 or 5 event. The median time to onset of neurologic toxicities was 6 days (range: 1-93 days) with a median duration of 8 days (range: 1-144 days). Prophylactic treatment with corticosteroids was administered to a cohort of 39 patients for 3 days beginning on the day of infusion of YESCARTA. Of those patients, 85% (33/39) developed neurologic toxicities, 8% (3/39) developed Grade 3, and 5% (2/39) developed Grade 4 neurologic toxicities. The median time to onset of neurologic toxicities was 6 days (range: 1-274 days) with a median duration of 12 days (range: 1-107 days). Prophylactic corticosteroids for management of CRS and neurologic toxicities may result in higher grade of neurologic toxicities or prolongation of neurologic toxicities, delay the onset and decrease the duration of CRS. Monitor patients for signs and symptoms of neurologic toxicities at least daily for 7 days at the certified healthcare facility, and for 4 weeks thereafter, and treat promptly. REMS Because of the risk of CRS and neurologic toxicities, YESCARTA is available only through a restricted program called the YESCARTA and TECARTUS REMS Program which requires that: Healthcare facilities that dispense and administer YESCARTA must be enrolled and comply with the REMS requirements and must have on-site, immediate access to a minimum of 2 doses of tocilizumab for each patient for infusion within 2 hours after YESCARTA infusion, if needed for treatment of CRS. Certified healthcare facilities must ensure that healthcare providers who prescribe, dispense, or administer YESCARTA are trained about the management of CRS and neurologic toxicities. Further information is available at or 1-844-454-KITE (5483). HYPERSENSITIVITY REACTIONS Allergic reactions, including serious hypersensitivity reactions or anaphylaxis, may occur with the infusion of YESCARTA. SERIOUS INFECTIONS Severe or life-threatening infections occurred. Infections (all grades) occurred in 45% of patients with NHL. ≥ Grade 3 infections occurred in 17% of patients, including ≥ Grade 3 infections with an unspecified pathogen in 12%, bacterial infections in 5%, viral infections in 3%, and fungal infections in 1%. YESCARTA should not be administered to patients with clinically significant active systemic infections. Monitor patients for signs and symptoms of infection before and after infusion and treat appropriately. Administer prophylactic antimicrobials according to local guidelines. Febrile neutropenia was observed in 36% of all patients with NHL and may be concurrent with CRS. In the event of febrile neutropenia, evaluate for infection and manage with broad-spectrum antibiotics, fluids, and other supportive care as medically indicated. In immunosuppressed patients, including those who have received YESCARTA, life-threatening and fatal opportunistic infections including disseminated fungal infections (e.g., candida sepsis and aspergillus infections) and viral reactivation (e.g., human herpes virus-6 [HHV-6] encephalitis and JC virus progressive multifocal leukoencephalopathy [PML]) have been reported. The possibility of HHV-6 encephalitis and PML should be considered in immunosuppressed patients with neurologic events and appropriate diagnostic evaluations should be performed. Hepatitis B virus (HBV) reactivation, in some cases resulting in fulminant hepatitis, hepatic failure, and death, can occur in patients treated with drugs directed against B cells, including YESCARTA. Perform screening for HBV, HCV, and HIV in accordance with clinical guidelines before collection of cells for manufacturing. PROLONGED CYTOPENIAS Patients may exhibit cytopenias for several weeks following lymphodepleting chemotherapy and YESCARTA infusion. ≥ Grade 3 cytopenias not resolved by Day 30 following YESCARTA infusion occurred in 39% of all patients with NHL and included neutropenia (33%), thrombocytopenia (13%), and anemia (8%). Monitor blood counts after infusion. HYPOGAMMAGLOBULINEMIA B-cell aplasia and hypogammaglobulinemia can occur. Hypogammaglobulinemia was reported as an adverse reaction in 14% of all patients with NHL. Monitor immunoglobulin levels after treatment and manage using infection precautions, antibiotic prophylaxis, and immunoglobulin replacement. The safety of immunization with live viral vaccines during or following YESCARTA treatment has not been studied. Vaccination with live virus vaccines is not recommended for at least 6 weeks prior to the start of lymphodepleting chemotherapy, during YESCARTA treatment, and until immune recovery following treatment. SECONDARY MALIGNANCIES Secondary malignancies may develop. Monitor life-long for secondary malignancies. In the event that one occurs, contact Kite at 1-844-454-KITE (5483) to obtain instructions on patient samples to collect for testing. EFFECTS ON ABILITY TO DRIVE AND USE MACHINES Due to the potential for neurologic events, including altered mental status or seizures, patients are at risk for altered or decreased consciousness or coordination in the 8 weeks following YESCARTA infusion. Advise patients to refrain from driving and engaging in hazardous occupations or activities, such as operating heavy or potentially dangerous machinery, during this initial period. ADVERSE REACTIONS The most common non-laboratory adverse reactions (incidence ≥ 20%) in patients with LBCL in ZUMA-7 included fever, CRS, fatigue, hypotension, encephalopathy, tachycardia, diarrhea, headache, musculoskeletal pain, nausea, febrile neutropenia, chills, cough, infection with unspecified pathogen, dizziness, tremor, decreased appetite, edema, hypoxia, abdominal pain, aphasia, constipation, and vomiting. The most common adverse reactions (incidence ≥ 20%) in patients with LBCL in ZUMA-1 included CRS, fever, hypotension, encephalopathy, tachycardia, fatigue, headache, decreased appetite, chills, diarrhea, febrile neutropenia, infections with pathogen unspecified, nausea, hypoxia, tremor, cough, vomiting, dizziness, constipation, and cardiac arrhythmias. The most common non-laboratory adverse reactions (incidence ≥ 20%) in patients with iNHL in ZUMA-5 included fever, CRS, hypotension, encephalopathy, fatigue, headache, infections with pathogen unspecified, tachycardia, febrile neutropenia, musculoskeletal pain, nausea, tremor, chills, diarrhea, constipation, decreased appetite, cough, vomiting, hypoxia, arrhythmia, and dizziness. About Gilead Sciences Gilead Sciences, Inc. is a biopharmaceutical company that has pursued and achieved breakthroughs in medicine for more than three decades, with the goal of creating a healthier world for all people. The company is committed to advancing innovative medicines to prevent and treat life-threatening diseases, including HIV, viral hepatitis and cancer. Gilead operates in more than 35 countries worldwide, with headquarters in Foster City, California. About Kite Kite, a Gilead Company, is a global biopharmaceutical company based in Santa Monica, California, focused on cell therapy to treat and potentially cure cancer. As the global cell therapy leader, Kite has treated more patients with CAR T-cell therapy than any other company. Kite has the largest in-house cell therapy manufacturing network in the world, spanning process development, vector manufacturing, clinical trial supply and commercial product manufacturing. For more information on Kite, please visit . Follow Kite on social media on Twitter (@KitePharma) and LinkedIn. Forward-Looking Statements This press release includes forward-looking statements, within the meaning of the Private Securities Litigation Reform Act of 1995 that are subject to risks, uncertainties and other factors, including the ability of Gilead and Kite to initiate, progress or complete clinical trials within currently anticipated timelines or at all, and the possibility of unfavorable results from ongoing or additional clinical studies, including those involving Trodelvy, Yescarta, domvanalimab, etrumadenant, magrolimab and zimberelimab; the possibility that Gilead and Kite may make a strategic decision to discontinue development of these programs and, as a result, these programs may never be successfully commercialized for the indications currently under evaluation; and any assumptions underlying any of the foregoing. These and other risks, uncertainties and factors are described in detail in Gilead’s Quarterly Report on Form 10-Q for the quarter ended March 31, 2023, as filed with the U.S. Securities and Exchange Commission. These risks, uncertainties and other factors could cause actual results to differ materially from those referred to in the forward-looking statements. All statements other than statements of historical fact are statements that could be deemed forward-looking statements. The reader is cautioned that any such forward-looking statements are not guarantees of future performance and involve risks and uncertainties, and is cautioned not to place undue reliance on these forward-looking statements. All forward-looking statements are based on information currently available to Gilead and Kite, and Gilead and Kite assume no obligation and disclaim any intent to update any such forward-looking statements. Trodelvy, Yescarta, Gilead, the Gilead logo, Kite and the Kite logo are trademarks of Gilead Sciences, Inc., or its related companies. For more information about Gilead, please visit the company’s website at , follow Gilead on Twitter (@GileadSciences) or call Gilead Public Affairs at 1-800-GILEAD-5 or 1-650-574-3000. For more information on Kite, please visit the company’s website at . Follow Kite on social media on Twitter (@KitePharma) and LinkedIn.

Phase 2Phase 3ImmunotherapyASCOClinical Result

03 May 2023

·www.biospace.com

G1 Therapeutics Provides First Quarter 2023 Financial Results and Operational Highlights

Drove 18% Quarterly Net Revenue Growth of COSELA® (trilaciclib) Over the Fourth Quarter of 2022; Grew Quarterly Vial Volume by 21% Over Prior Quarter Provided Updated Timing for Interim Overall Survival (OS) Analysis of Pivotal Phase 3 Trial in Metastatic Triple Negative Breast Cancer (TNBC); Analysis Now Expected in the First Quarter of 2024 Completed Enrollment in Phase 2 Trial of Trilaciclib in Combination with an Antibody Drug Conjugate (ADC) in Patients with Metastatic TNBC Announced Acceptance of Additional Results from Phase 2 ADC and Neoadjuvant TNBC Trials for Presentation at the ESMO Breast Cancer 2023 Annual Congress and the ASCO 2023 Annual Meeting, Respectively Strengthened Balance Sheet Through Monetization of Future Royalties and Milestones from Simcere, Providing Additional Near-Term Capital to Extend Cash Runway Beyond Important Clinical Trial Readouts Expected in Early 2024 Management to Host Webcast and Conference Call today at 8:30 AM ET RESEARCH TRIANGLE PARK, N.C., May 03, 2023 (GLOBE NEWSWIRE) -- G1 Therapeutics, Inc. (Nasdaq: GTHX), a commercial-stage oncology company, today provided a corporate and financial update for the first quarter ended March 31, 2023. “Since the start of 2023, we've focused efforts on our three core priorities of driving significant growth in sales of COSELA, executing on our four ongoing clinical trials of trilaciclib, and efficiently managing our cash runway through each of our data readouts,” said Jack Bailey, Chief Executive Officer of G1 Therapeutics. “We made good progress on all fronts during the first quarter of this year. The commercial team executed well, driving net COSELA sales growth of 18% quarter-over-quarter, and vial volume growth of 21%, as we work towards our guidance of between $50 million and $60 million in product revenue this year. Regarding the clinical pipeline, we've continued to move each of our trials forward, including our two Phase 2 trials in TNBC from which data are expected later this quarter, followed by results from our pivotal Phase 3 trial in TNBC which are now expected in the first quarter of next year." First Quarter 2023 and Recent Highlights Financial Recognized $10.5 million in Net COSELA Revenue: Results represent an 18% increase in net sales over the fourth quarter of 2022. G1 recognized total revenues of $12.9 million for the first quarter of 2023. Achieved 21% COSELA Vial Volume Growth Over the Fourth Quarter of 2022. Ended the First Quarter 2023 with Cash, Cash Equivalents, and Marketable Securities of $116.3 million. Strengthened Balance Sheet Through Non-Equity Dilutive Monetization of Simcere Milestones and Royalties: In the second quarter of 2023, G1 and Simcere reached agreement whereby Simcere will buy out the remaining milestones and royalties on sales of COSELA (trilaciclib hydrochloride for injection) in Greater China for up to $48 million, with $30 million received within the second quarter of 2023, providing additional non-equity dilutive financing that secures G1’s cash runway beyond its clinical trial readouts. All other aspects of the strategic collaboration remain in place including participation and cost-sharing in global clinical trials. G1 retains the rights to trilaciclib throughout the rest of the world, other than Greater China. Clinical Provided Updated Timing for Initial Results from Pivotal Phase 3 Clinical Trial of Trilaciclib in Patients with mTNBC; Interim OS Analysis Now Expected in the First Quarter of 2024: The primary endpoint of PRESERVE 2 is to evaluate the effect of trilaciclib on OS compared with placebo in patients receiving first-line gemcitabine/carboplatin. G1 now expects the interim OS analysis to be conducted by its data monitoring committee at 70% of events in the first quarter of 2024. If the trial meets the interim analysis stopping rule, it will terminate, and G1 will report the top line results. If it does not, the trial will continue to the final analysis. Completed Enrollment in Phase 2 Trial of Trilaciclib in Combination with the ADC Sacituzumab Govitecan-Hziy: Enrollment is complete at 30 patients in this exploratory Phase 2, multicenter, open-label, single arm study evaluating the safety and efficacy of trilaciclib administered prior to sacituzumab in patients with unresectable, locally advanced or metastatic TNBC. Announced Upcoming Poster Presentation of Results from Trilaciclib Phase 2 ADC Combination Trial: Additional results from this trial in metastatic TNBC have been accepted for poster presentation during the European Society for Medical Oncology (ESMO) Breast Cancer 2023 Annual Congress. The abstract (201P) will be presented during the poster session on May 12, 2023 from 12:15PM to 1:00PM Central European Summer Time (CEST). G1 currently expects to reach the OS endpoints for this study in the first quarter of 2024. Initial Phase 2 safety data presented in November 2022 suggested an on-target effect of trilaciclib to reduce the rates of adverse events associated with sacituzumab govitecan (SG), including myelosuppression and diarrhea, relative to the previously published SG single agent safety profile. (Press release here) Announced Upcoming Poster Presentation of Results from Phase 2 Mechanism of Action Trial of Trilaciclib in Patients with Neoadjuvant TNBC: Additional results from this trial have been accepted for poster presentation during the American Society of Clinical Oncology (ASCO) 2023 Annual Meeting. The abstract (603) will be presented during the poster session on June 4, 2023 from 8:00AM to 11:00AM CDT. Initial Phase 2 safety data showed favorable alterations in the tumor microenvironment from a single dose of trilaciclib monotherapy as measured by increases in the proportions of CD8+ T cells compared to T regulatory cells (Tregs) in patients with early-stage triple negative breast cancer (TNBC). (Press release here) Confirmed that Initial Results Including the Primary Endpoint of Progression Free Survival from the Phase 2 Bladder Cancer Trial of Trilaciclib (PRESERVE 3) Are Anticipated Midyear 2023: G1 has reiterated that additional safety and efficacy results, including results from the primary endpoint of Progression Free Survival, are expected from PRESERVE 3 midyear 2023. The Company currently expects to reach the OS endpoints for this study in the first quarter of 2024. First Quarter 2023 Financial Results As of March 31, 2023, cash and cash equivalents and marketable securities totaled $116.3 million, compared to $145.1 million as of December 31, 2022. This includes $52.0 million in net proceeds from a fourth quarter 2022 underwritten public offering of its common stock at a public offering price of $6.50 per share. Cowen and Raymond James acted as joint book-running managers for the offering. Needham & Company and Wedbush PacGrow acted as lead managers for the offering. Total revenues for the first quarter of 2023 were $12.9 million, including $10.5 million in net product sales of COSELA and license revenue of $2.5 million, related to supply and manufacturing services with Simcere, royalty revenue from Simcere, and clinical trial reimbursements from EQRx and Simcere, compared to $6.9 million in total revenues in the first quarter of 2022. Operating expenses for the first quarter of 2023 were $38.7 million, compared to $53.7 million for the first quarter of 2022. GAAP operating expenses include stock-based compensation expense of $3.8 million for the first quarter of 2023, compared to $5.8 million for the first quarter of 2022. Cost of goods sold expense for the first quarter of 2023 was $1.5 million compared to $0.7 million for the first quarter of 2022, primarily due to an increase in product sales. Research and development (R&D) expenses for the first quarter of 2023 were $15.5 million, compared to $26.3 million for the first quarter of 2022. The decrease in R&D expenses was primarily due to a decrease in the Company's clinical program costs. Selling, general, and administrative (SG&A) expenses for the first quarter of 2023 were $21.8 million, compared to $26.7 million for the first quarter of 2022. The decrease in SG&A expenses was primarily due to decreases in commercialization activities, personnel costs, and professional fees. The net loss for the first quarter of 2023 was $27.6 million, compared to $49.2 million for the first quarter of 2022. The basic and diluted net loss per share for the first quarter of 2023 was $(0.53) compared to $(1.15) for the first quarter of 2022. 2023 Financial Guidance G1 today reiterated its full year 2023 net revenue guidance. The Company expects to generate between $50 million and $60 million in COSELA net revenue in 2023. G1's product revenue guidance was initially provided in its fourth quarter and full year 2022 financial results and business update, and is based on expectations for continued acceleration of sales performance of COSELA in the U.S. Webcast and Conference Call G1 will host a webcast and conference call at 8:30 a.m. ET today to provide a corporate and financial update for the first quarter ended March 31, 2023. Please note that there is a new process to access the call via telephone. To register and receive a dial in number and unique PIN to access the live conference call, please follow this linkto register online. While not required, it is recommended that you join 10 minutes prior to the start of the event. A live and archived webcast will be available on the Events & Presentations page of the company’s website: . The webcast will be archived on the same page for 90 days following the event. About COSELA® (trilaciclib) for Injection COSELA (trilaciclib) was approved by the U.S. Food and Drug Administration on February 12, 2021. Indication COSELA® (trilaciclib) is indicated to decrease the incidence of chemotherapy-induced myelosuppression in adult patients when administered prior to a platinum/etoposide-containing regimen or topotecan-containing regimen for extensive-stage small cell lung cancer. Important Safety Information COSELA is contraindicated in patients with a history of serious hypersensitivity reactions to trilaciclib. Warnings and precautions include injection-site reactions (including phlebitis and thrombophlebitis), acute drug hypersensitivity reactions, interstitial lung disease (pneumonitis), and embryo-fetal toxicity. The most common adverse reactions (>10%) were fatigue, hypocalcemia, hypokalemia, hypophosphatemia, aspartate aminotransferase increased, headache, and pneumonia. This information is not comprehensive. Please click here for full Prescribing Information. To report suspected adverse reactions, contact G1 Therapeutics at 1-800-790-G1TX or call FDA at 1-800-FDA-1088 or visit About G1 Therapeutics G1 Therapeutics, Inc. is a commercial-stage biopharmaceutical company focused on the development and commercialization of next generation therapies that improve the lives of those affected by cancer, including the Company’s first commercial product, COSELA® (trilaciclib). G1 has a deep clinical pipeline and is executing a development plan evaluating trilaciclib in a variety of solid tumors, including breast, lung, and bladder cancers. G1 Therapeutics is based in Research Triangle Park, N.C. For additional information, please visit and follow us on Twitter @G1Therapeutics. G1 Therapeutics® and the G1 Therapeutics logo and COSELA® and the COSELA logo are trademarks of G1 Therapeutics, Inc. Forward-Looking Statements This press release contains forward-looking statements within the meaning of the Private Securities Litigation Reform Act of 1995. Words such as "may," "will," "expect," "plan," "anticipate," "estimate," "intend" and similar expressions (as well as other words or expressions referencing future events, conditions or circumstances) are intended to identify forward-looking statements. Forward-looking statements in this press release include, but are not limited to, those relating to expectations for the commercial sales of COSELA (trilaciclib), the therapeutic potential of COSELA (trilaciclib), our full year 2023 financial guidance, our ability to generate data to maximize trilaciclib’s applicability to future treatment paradigms, our ability to obtain approvals for and commercialize additional indications of COSELA (trilaciclib), and our reliance on partners to develop licensed products. If we are not in compliance with our monthly net revenue covenants or the minimum cash covenant with our debt facility, we may be subject to the acceleration clauses in our loan agreement, and the lender may call the debt, resulting in our immediate need for additional funds. In addition, COSELA (trilaciclib) may fail to achieve the degree of market acceptance for commercial success, and the impact of pandemics such as COVID-19 (coronavirus). Each of these forward-looking statements is based on the company’s expectations and assumptions as of the date of this press release and involves risks and uncertainties. Factors that may cause the company’s actual results to differ from those expressed or implied in the forward-looking statements in this press release are discussed in the company’s filings with the U.S. Securities and Exchange Commission, including the "Risk Factors" sections contained therein and include, but are not limited to, the company’s ability to complete a successful commercialize COSELA (trilaciclib); the company’s ability to complete clinical trials for, obtain approvals for and commercialize additional indications of COSELA (trilaciclib); the company’s initial success in ongoing clinical trials may not be indicative of results obtained when these trials are completed or in later stage trials; the inherent uncertainties associated with developing new products or technologies and operating as a commercial-stage company; and market conditions. Except as required by law, the company assumes no obligation to update any forward-looking statements contained herein to reflect any change in expectations, even as new information becomes available. G1 Therapeutics Contacts: John W. Umstead V Chief Financial Officer 919-747-8419 jumstead@g1therapeutics.com Will Roberts Vice President, Investor Relations & Corporate Communications 919-907-1944 wroberts@g1therapeutics.com G1 Therapeutics, Inc. Condensed Balance Sheet Data (unaudited) (in thousands) March 31, 2023 December 31, 2022 Cash and cash equivalents and Marketable securities $116,317 $145,070 Working Capital $120,275 $143,912 Total Assets $161,957 $187,965 Accumulated deficit $(759,613) $(732,018) Total stockholders' equity $44,988 $68,747 G1 Therapeutics, Inc. Condensed Statements of Operations (unaudited) (in thousands, except per share data) Three Months Ended March 31, 2023 2022 Revenues Product sales, net $ 10,492 $ 5,480 License revenue 2,454 1,422 Total revenues 12,946 6,902 Operating expenses Cost of goods sold 1,459 669 Research and development 15,480 26,305 Selling, general and administrative 21,753 26,709 Total operating expenses 38,692 53,683 Loss from operations (25,746) (46,781) Other income (expense) Interest income 716 9 Interest expense (3,089) (2,265) Other income (expense) 524 (155) Total other income (expense), net (1,849) (2,411) Loss before income taxes (27,595) (49,192) Income tax expense — — Net loss $ (27,595) $ (49,192) Net loss per share, basic and diluted $ (0.53) $ (1.15) Weighted average common shares outstanding, basic and diluted 51,647,934 42,687,201

Phase 2Financial StatementClinical ResultDrug ApprovalASCO

100 Deals associated with Labetuzumab govitecan

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KEGG	Wiki	ATC	Drug Bank
-	-	-	DB12331

R&D Status

10 top R&D records.

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Indication	Highest Phase	Country/Location	Organization	Date
Colonic Cancer	Phase 2	US	Gilead Sciences, Inc.	12 Feb 2013
Metastatic Colorectal Carcinoma	Phase 2	US	Gilead Sciences, Inc.	12 Feb 2013
Rectal Cancer	Phase 2	US	Gilead Sciences, Inc.	12 Feb 2013
Colorectal cancer recurrent	Phase 2	US	Gilead Sciences, Inc.	01 May 2011

Clinical Result

Indication

Phase

Evaluation

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Study	Phase	Population	Analyzed Enrollment	Group	Results	Evaluation	Publication Date


NCT01605318 (Pubmed) Manual	Phase 1/2	Colorectal Cancer	86	labetuzumab govitecan	(yibatdyjnk) = neutropenia (16%)，leukopenia (11%)，anemia (9%)，diarrhea (7%) qjbasmjyct (tkeptzvnts )	Positive	10 Oct 2017
NCT01605318 (AACR2016)	Phase 2	Metastatic colon cancer	86	IMMU-130 10 mg/kg QW	(wwfbypjqdi) = cpvhdhhebs vpxrwutnst (geaddanelc ) View more	Positive	15 Jul 2016
NCT01605318 (AACR2016)	Phase 2	Metastatic colon cancer	86	IMMU-130 6 mg/kg BIW	(wwfbypjqdi) = azdvhfejpf vpxrwutnst (geaddanelc ) View more	Positive	15 Jul 2016
NCT01605318 (ASCO2015)	Phase 1/2	Metastatic Colorectal Carcinoma	66	IMMU-130	(zratmlslrc) = bxgheoodmf gayfkylbiq (mgvcjfzkll ) View more	-	20 May 2015
AACR2013	Phase 1	Metastatic Colorectal Carcinoma	9	IMMU-130	cmusxafwir(nefmcyrjgq) = nynrtkzgur yxkdutlubc (ahckyehtjo )	-	15 Apr 2013

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