Encorafenib

NEW YORK--( BUSINESS WIRE )-- Pfizer Inc. (NYSE: PFE) today announced longer-term follow-up results from the Phase 2 single-arm PHAROS clinical trial evaluating the efficacy and safety of BRAFTOVI ® (encorafenib) in combination with MEKTOVI ® (binimetinib) for patients with BRAF V600E - mutant metastatic non-small cell lung cancer (NSCLC). After an additional 18 months of follow-up, the objective response rate (ORR) and the median duration of response (DoR) as assessed by independent radiology review were 75% and 40 months in treatment-naïve patients and 46% and 16.7 months in previously treated patients, respectively. In addition, after approximately three years of follow-up in treatment-naïve patients, the median progression-free survival (PFS) with BRAFTOVI + MEKTOVI was 30.2 months (95% confidence interval [CI], 15.7-not estimable [NE]), while median overall survival (OS) was not yet reached (95% CI, 31.3-NE). These data will be presented today during a late-breaking oral session (Abstract LBA56) at the European Society for Medical Oncology (ESMO) Congress 2024 in Barcelona, Spain. “ BRAF V600E-mutant metastatic non-small cell lung cancer tends to be aggressive, and effective targeted first-line treatment options with manageable safety profiles are critical for the thousands of people who are diagnosed globally each year,” said Gregory Riely, M.D., Ph.D., Vice Chair, Clinical Research in the Department of Medicine at Memorial Sloan Kettering Cancer Center (MSK) and PHAROS investigator. “ The longer-term follow-up results from the PHAROS trial represent an important step forward in the treatment of BRAF V600E-mutant metastatic NSCLC, especially for treatment-naïve patients. These compelling results support the BRAFTOVI + MEKTOVI combination as a standard of care option for these patients.” Lung cancer is the number one cause of cancer-related death around the world. 1 NSCLC accounts for approximately 80-85% of lung cancers, 2 with BRAF V600E mutations occurring in about 2% of patients with NSCLC. 3 Understanding the role of the mitogen-activated protein within the pathway including BRAF V600E-mutant metastatic NSCLC. The Phase 2 PHAROS trial ( NCT03915951 ) is an open-label, multicenter, single arm study examining BRAFTOVI + MEKTOVI combination therapy in treatment-naïve and previously treated patients with BRAF V600E-mutant metastatic NSCLC. Notably, upon longer-term follow-up in previously treated patients, BRAFTOVI + MEKTOVI showed a median PFS of 9.3 months (95% CI, 6.2-24.8) and a median OS of 22.7 months (95% CI, 14.1-32.2), with a safety profile that was consistent with previous findings; no new safety concerns were identified. In this analysis, treatment-related adverse events (AEs) led to dose reduction in 26% of patients, and to permanent discontinuation in 16% of patients. Nausea, diarrhea, and fatigue remained the most common treatment-related AEs. “ These potentially practice-changing results from the PHAROS trial show that the combination of BRAFTOVI + MEKTOVI is providing long-term compelling efficacy for patients, and although no definitive conclusions can be made across trials, the duration of response and progression-free survival in treatment naïve patients appear to be the longest observed for BRAF V600E–mutant metastatic NSCLC compared with historical outcomes,” said Roger Dansey, M.D., Chief Development Officer, Oncology, Pfizer. “ These latest data reflect our deep understanding of the science behind biomarker-driven cancers and add to our legacy in developing innovative targeted treatments in NSCLC. We are continuing to build upon this strong foundation with a pipeline of targeted medicines and combinations across our tumor areas of focus, including the ongoing investigation of BRAFTOVI in earlier settings of metastatic colorectal cancer, and the exploration of a next-generation brain-penetrant BRAF inhibitor.” BRAFTOVI + MEKTOVI was approved by the U.S. Food and Drug Administration (FDA) in October 2023, and by the European Commission in August 2024, for the treatment of BRAF V600E-mutant metastatic NSCLC based on the initial ORR (the primary endpoint) and DoR (key secondary endpoint) results from the PHAROS clinical trial. In addition to PHAROS, safety lead-in data from the ongoing Phase 3 BREAKWATER study investigating BRAFTOVI in combination with cetuximab and FOLFIRI chemotherapy in previously untreated BRAF V600E-mutant metastatic colorectal cancer (CRC) will also be presented as a mini-oral session at ESMO (Abstract 515MO). BRAFTOVI in combination with cetuximab and FOLFIRI was found to be generally tolerable in this patient population, with no new safety concerns identified. These findings support the ongoing investigation of this combination regimen as a potential treatment option for BRAF V600E-mutant metastatic CRC. The Phase 3 BREAKWATER trial is ongoing, with updated data expected in 2025. BRAF mutations can occur in a number of tumor types, including metastatic melanoma, metastatic CRC and metastatic NSCLC. Among different types of BRAF mutations, the BRAF V600E mutation is particularly important as it occurs in approximately half of patients with BRAF -mutant metastatic NSCLC. 4 Further, this mutation represents up to 90% of BRAF mutations in melanoma 5 and more than doubles the risk of mortality for patients with CRC. 6 In addition to our continued investigation of BRAFTOVI + MEKTOVI for BRAF- mutant cancers, Pfizer is also exploring a next-generation BRAF inhibitor designed to selectively inhibit mutant BRAF monomers and mutant BRAF- containing dimers and be brain penetrant. The investigational drug is currently being evaluated in a Phase 1 clinical study. Pfizer has exclusive rights to BRAFTOVI + MEKTOVI in the U.S., Canada, and all countries in Latin America, Africa and the Middle East. Ono Pharmaceutical Co., Ltd. has exclusive rights to commercialize both products in Japan and South Korea, Medison has exclusive rights in Israel, and Pierre Fabre Laboratories has exclusive rights in all other countries, including Europe and Asia-Pacific (excluding Japan and South Korea). The PHAROS trial is conducted with support from Pierre Fabre Laboratories. INDICATION AND USAGE BRAFTOVI ® (encorafenib) and MEKTOVI ® (binimetinib) are kinase inhibitors indicated for use in combination for the treatment of patients with unresectable or metastatic melanoma with a BRAF V600E or V600K mutation, as detected by an FDA-approved test. BRAFTOVI is indicated, in combination with cetuximab, for the treatment of adult patients with metastatic colorectal cancer (CRC) with a BRAF V600E mutation, as detected by an FDA-approved test, after prior therapy. BRAFTOVI and MEKTOVI are kinase inhibitors indicated for use in combination for the treatment of adult patients with metastatic non-small cell lung cancer (NSCLC) with a BRAF V600E mutation, as detected by an FDA-approved test. Limitations of Use : BRAFTOVI is not indicated for treatment of patients with wild-type BRAF melanoma, wild-type BRAF CRC, or wild-type BRAF NSCLC. IMPORTANT SAFETY INFORMATION This information applies to the safety of BRAFTOVI when used in combination with either MEKTOVI or cetuximab. WARNINGS AND PRECAUTIONS New Primary Malignancies: New primary malignancies, cutaneous and non-cutaneous, can occur. BRAFTOVI may promote malignancies associated with activation of RAS through mutation or other mechanisms. Perform dermatopathologic evaluations prior to initiating treatment, every 2 months during treatment, and for up to 6 months following discontinuation of treatment. Manage suspicious skin lesions with excision and dermatopathologic evaluation. Dose modification is not recommended for new primary cutaneous malignancies. Monitor patients receiving BRAFTOVI for signs and symptoms of non-cutaneous malignancies. Discontinue BRAFTOVI for RAS mutation-positive non-cutaneous malignancies. Monitor patients for new malignancies prior to initiation of treatment, while on treatment, and after discontinuation of treatment. BRAF -mutant type ( BRAF -mt) metastatic melanoma (COLUMBUS study): Cutaneous squamous cell carcinoma (cuSCC), including keratoacanthoma (KA), occurred in 2.6% and basal cell carcinoma occurred in 1.6% of patients receiving BRAFTOVI with MEKTOVI. Median time to first occurrence of cuSCC/KA was 5.8 months. BRAF -mt metastatic CRC (BEACON CRC study): cuSCC, including KA, occurred in 1.4% of patients with CRC, and a new primary melanoma occurred in 1.4% of patients who received BRAFTOVI with cetuximab. BRAF -mt metastatic NSCLC (PHAROS study): cuSCC and skin papilloma (SP), each occurred in 2% of patients. Tumor Promotion in BRAF Wild-Type Tumors: In vitro experiments have demonstrated paradoxical activation of MAP-kinase signaling and increased cell proliferation in BRAF wild-type cells exposed to BRAF inhibitors. Confirm evidence of BRAF V600E or V600K mutation using an FDA-approved test prior to initiating BRAFTOVI. Cardiomyopathy: Cardiomyopathy manifesting as left ventricular dysfunction associated with symptomatic or asymptomatic decreases in ejection fraction, has been reported. Patients with cardiovascular risk factors should be monitored closely. Withhold, reduce dose, or permanently discontinue based on severity of adverse reaction. Assess left ventricular ejection fraction (LVEF) by echocardiogram or multi-gated acquisition (MUGA) scan prior to initiating treatment, 1 month after initiating treatment, and then every 2 to 3 months during treatment. The safety has not been established in patients with a baseline ejection fraction that is either below 50% or below the institutional lower limit of normal (LLN). BRAF -mt metastatic melanoma (COLUMBUS study): Evidence of cardiomyopathy occurred in 7% and Grade 3 left ventricular dysfunction occurred in 1.6% of patients receiving BRAFTOVI with MEKTOVI. The median time to first occurrence of left ventricular dysfunction (any grade) was 3.6 months. Cardiomyopathy resolved in 87% of patients. BRAF -mt metastatic NSCLC (PHAROS study): Evidence of cardiomyopathy occurred in 11% and Grade 3 left ventricular dysfunction occurred in 1% of patients. Cardiomyopathy resolved in 82% of patients. Hepatotoxicity: Hepatotoxicity can occur. Monitor liver laboratory tests before initiation, monthly during treatment, and as clinically indicated. Withhold, reduce dose, or permanently discontinue based on severity of adverse reaction. BRAF -mt metastatic melanoma (COLUMBUS study): The incidence of Grade 3 or 4 increases in liver function laboratory tests in patients receiving MEKTOVI with BRAFTOVI was 6% for alanine aminotransferase (ALT), 2.6% for aspartate aminotransferase (AST), and 0.5% for alkaline phosphatase. BRAF -mt metastatic NSCLC (PHAROS study): The incidence of Grade 3 or 4 increases in liver function laboratory tests was 10% for AST, 9% for ALT, and 3.2% for alkaline phosphatase. Hemorrhage: Hemorrhage can occur when BRAFTOVI is administered in combination with MEKTOVI or cetuximab. Withhold, reduce dose, or permanently discontinue based on severity of adverse reaction. BRAF -mt metastatic melanoma (COLUMBUS study): Hemorrhage occurred in 19% of patients receiving BRAFTOVI with MEKTOVI and Grade 3 or higher hemorrhage occurred in 3.2% of patients. The most frequent hemorrhagic events were gastrointestinal, including rectal hemorrhage (4.2%), hematochezia (3.1%), and hemorrhoidal hemorrhage (1%). Fatal intracranial hemorrhage in the setting of new or progressive brain metastases occurred in 1.6% of patients. BRAF -mt metastatic CRC (BEACON CRC study): Hemorrhage occurred in 19% of patients receiving BRAFTOVI with cetuximab; Grade 3 or higher hemorrhage occurred in 1.9% of patients, including fatal gastrointestinal hemorrhage in 0.5% of patients. The most frequent hemorrhagic events were epistaxis (6.9%), hematochezia (2.3%), and rectal hemorrhage (2.3%). BRAF -mt metastatic NSCLC (PHAROS study): Hemorrhage occurred in 12% of patients including fatal intracranial hemorrhage (1%); Grade 3 or 4 hemorrhage occurred in 4.1% of patients. The most frequent hemorrhagic events were anal hemorrhage and hemothorax (2% each). Uveitis: Uveitis, including iritis and iridocyclitis, has been reported in patients treated with BRAFTOVI with MEKTOVI. Assess for visual symptoms at each visit. Perform an ophthalmological evaluation at regular intervals and for new or worsening visual disturbances, and to follow new or persistent ophthalmologic findings. Withhold, reduce dose, or permanently discontinue based on severity of adverse reaction. BRAF -mt metastatic melanoma (COLUMBUS study): The incidence of uveitis among patients treated with BRAFTOVI with MEKTOVI was 4%. BRAF -mt metastatic NSCLC (PHAROS study): The incidence of uveitis among patients treated with BRAFTOVI with MEKTOVI was 1%. QT Prolongation: BRAFTOVI is associated with dose-dependent QTc interval prolongation in some patients. Monitor patients who already have or who are at significant risk of developing QTc prolongation, including patients with known long QT syndromes, clinically significant bradyarrhythmias, severe or uncontrolled heart failure and those taking other medicinal products associated with QT prolongation. Correct hypokalemia and hypomagnesemia prior to and during BRAFTOVI administration. Withhold, reduce dose, or permanently discontinue for QTc >500 ms. BRAF -mt metastatic melanoma (COLUMBUS study): An increase in QTcF to >500 ms was measured in 0.5% (1/192) of patients who received BRAFTOVI with MEKTOVI. BRAF -mt metastatic NSCLC (PHAROS study): An increase in QTcF to >500 ms was measured in 2.1% (2/95) of patients who received BRAFTOVI with MEKTOVI. Embryo-Fetal Toxicity: Both BRAFTOVI and MEKTOVI can cause fetal harm when administered to a pregnant woman. BRAFTOVI can render hormonal contraceptives ineffective. BRAF -mt metastatic melanoma (COLUMBUS study) and BRAF -mt metastatic NSCLC (PHAROS study): Effective, non-hormonal contraceptives should be used during treatment and for at least 30 days after the final dose for patients taking BRAFTOVI with MEKTOVI. BRAF -mt metastatic CRC (BEACON CRC study): Advise females of reproductive potential to use effective nonhormonal contraception during treatment with BRAFTOVI and for 2 weeks after the final dose. BRAFTOVI as a Single Agent is associated with increased risk of certain adverse reactions compared to when BRAFTOVI is used with MEKTOVI. BRAF -mt metastatic melanoma (COLUMBUS study): Grades 3 or 4 dermatologic reactions occurred in 21% of patients receiving BRAFTOVI as a single agent compared to 2% in patients receiving the combination of BRAFTOVI with MEKTOVI. If MEKTOVI is temporarily interrupted or permanently discontinued, reduce the dose of BRAFTOVI as recommended. Risks Associated with Combination Treatment In BRAF -mt metastatic melanoma (COLUMBUS study) , BRAFTOVI is used in combination with MEKTOVI so refer to the prescribing information for MEKTOVI for additional risk information. In BRAF -mt metastatic CRC (BEACON CRC study) , BRAFTOVI is used in combination with cetuximab so refer to the prescribing information for cetuximab for additional risk information. In BRAF -mt metastatic NSCLC (PHAROS study) , BRAFTOVI is indicated for use as part of a regimen in combination with MEKTOVI, so refer to the prescribing information for MEKTOVI for additional risk information. Additional WARNINGS AND PRECAUTIONS for MEKTOVI When Used With BRAFTOVI Venous Thromboembolism (VTE): VTE occurred in 6% of patients with BRAF -mt metastatic melanoma (COLUMBUS study) , including 3.1% of patients who developed pulmonary embolism. VTE occurred in 7% of patients with BRAF -mt metastatic NSCLC (PHAROS study) , including 1% of patients who developed pulmonary embolism. Withhold, reduce dose, or permanently discontinue based on severity of adverse reaction. Other Ocular Toxicities Serous retinopathy Assess for visual symptoms at each visit. Perform an ophthalmologic examination at regular intervals, for new or worsening visual disturbances, and to follow new or persistent ophthalmologic findings. Withhold, reduce dose, or permanently discontinue based on severity of adverse reaction. BRAF -mt metastatic melanoma (COLUMBUS study): serous retinopathy occurred in 20% of patients receiving MEKTOVI with BRAFTOVI; 8% were retinal detachment and 6% were macular edema. Symptomatic serous retinopathy occurred in 8% of patients with no cases of blindness. The median time to onset of the first event of serous retinopathy (all grades) was 1.2 months. BRAF -mt metastatic NSCLC (PHAROS study): serous retinopathy (retinal detachment) occurred in 2% of patients with no cases of blindness. Retinal vein occlusion (RVO) is a known class-related adverse reaction of MEK inhibitors and may occur in patients receiving MEKTOVI with BRAFTOVI. In BRAF -mt metastatic melanoma (COLUMBUS study) , 1 patient experienced RVO (0.1%) in the MEKTOVI with BRAFTOVI group (n=690). The safety of MEKTOVI has not been established in patients with a history of RVO or current risk factors for RVO, including uncontrolled glaucoma or a history of hyperviscosity or hypercoagulability syndromes. Perform ophthalmological evaluation for patient-reported acute vision loss or other visual disturbance within 24 hours. Permanently discontinue MEKTOVI in patients with documented RVO. Interstitial Lung Disease (ILD): ILD, including pneumonitis, occurred in 0.3% (2 of 690 patients) with BRAF -mt metastatic melanoma (COLUMBUS study) receiving MEKTOVI with BRAFTOVI. One patient (1%) with BRAF -mt metastatic NSCLC (PHAROS study) receiving MEKTOVI with BRAFTOVI developed pneumonitis. Assess new or progressive unexplained pulmonary symptoms or findings for possible ILD. Withhold, reduce dose, or permanently discontinue based on severity of adverse reaction. Rhabdomyolysis: Rhabdomyolysis can occur when MEKTOVI is taken with BRAFTOVI. Monitor creatine phosphokinase (CPK) and creatinine levels prior to initiating MEKTOVI, periodically during treatment, and as clinically indicated. Withhold, reduce dose, or permanently discontinue based on severity of adverse reaction. BRAF -mt metastatic melanoma (COLUMBUS study): Elevation of laboratory values of serum CPK occurred in 58% of patients receiving MEKTOVI with BRAFTOVI. Rhabdomyolysis was reported in 0.1% (1 of 690 patients) with BRAF mutation-positive melanoma receiving MEKTOVI with BRAFTOVI. BRAF -mt metastatic NSCLC (PHAROS study): Elevation of laboratory values of serum creatine kinase (CK) occurred in 41% of patients. No patient experienced rhabdomyolysis. ADVERSE REACTIONS BRAF -mt Metastatic Melanoma (COLUMBUS study) Most common adverse reactions (≥20%, all grades) for patients receiving BRAFTOVI with MEKTOVI compared to vemurafenib were fatigue (43% vs 46%), nausea (41% vs 34%), diarrhea (36% vs 34%), vomiting (30% vs 16%), abdominal pain (28% vs 16%), arthralgia (26% vs 46%), myopathy (23% vs 22%), hyperkeratosis (23% vs 49%), rash (22% vs 53%), headache (22% vs 20%), constipation (22% vs 6%), visual impairment (20% vs 4%), serous retinopathy/RPED (20% vs 2%). Other clinically important adverse reactions occurring in <10% of patients who received BRAFTOVI with MEKTOVI were facial paresis, pancreatitis, panniculitis, drug hypersensitivity, and colitis. Most common laboratory abnormalities (≥20%, all grades) for BRAFTOVI with MEKTOVI compared to vemurafenib included increased creatinine (93% vs 92%), increased CPK (58% vs 3.8%), increased gamma glutamyl transferase (GGT) (45% vs 34%), anemia (36% vs 34%), increased ALT (29% vs 27%), hyperglycemia (28% vs 20%), increased AST (27% vs 24%), and increased alkaline phosphatase (21% vs 35%). BRAF -mt Metastatic CRC (BEACON CRC study) Most common adverse reactions (≥25%, all grades) in patients receiving BRAFTOVI with cetuximab compared to irinotecan with cetuximab or FOLFIRI with cetuximab (control) were fatigue (51% vs 50%), nausea (34% vs 41%), diarrhea (33% vs 48%), dermatitis acneiform (32% vs 43%), abdominal pain (30% vs 32%), decreased appetite (27% vs 27%), arthralgia (27% vs 3%), and rash (26% vs 26%). Other clinically important adverse reactions occurring in <10% of patients who received BRAFTOVI with cetuximab was pancreatitis. Most common laboratory abnormalities (≥20%, all grades) in the BRAFTOVI with cetuximab arm compared to irinotecan with cetuximab or FOLFIRI with cetuximab (control) were: anemia (34% vs 48%) and lymphopenia (24% vs 35%). BRAF -mt Metastatic NSCLC (PHAROS study) Most common adverse reactions (≥25%, all grades) in patients receiving BRAFTOVI with MEKTOVI were fatigue (61%), nausea (58%), diarrhea (52%), musculoskeletal pain (48%), vomiting (37%), abdominal pain (32%), visual impairment (29%), constipation (27%), dyspnea (27%), rash (27%), and cough (26%). Serious adverse reactions occurred in 38% of patients receiving BRAFTOVI with MEKTOVI. Serious adverse reactions occurring in ≥2% of patients were hemorrhage (6%), diarrhea (4.1%), anemia (3.1%), dyspnea (3.1%), pneumonia (3.1%), arrhythmia (2%), device related infection (2%), edema (2%), myocardial infarction (2%), and pleural effusion (2%). Fatal adverse reactions occurred in 2% of patients, including intracranial hemorrhage (1%) and myocardial infarction (1%). Other clinically important adverse reactions occurring in <10% of patients who received BRAFTOVI with MEKTOVI were peripheral neuropathy, dysgeusia, facial paresis, pancreatitis, hyperkeratosis, erythema, and drug hypersensitivity. Most common laboratory abnormalities (≥20%, all grades) for BRAFTOVI and MEKTOVI included increased creatinine (91%), hyperglycemia (48%), anemia (47%), increased creatine kinase (41%), lipase increased (40%), increased ALT (34%), hypoalbuminemia (32%), increased alkaline phosphatase (31%), increased AST (31%), hyperkalemia (31%), hyponatremia (26%), lymphopenia (24%), serum amylase increased (22%), and thrombocytopenia (20%). DRUG INTERACTIONS With BRAFTOVI When Used in Combination With Either MEKTOVI or Cetuximab Avoid coadministration of BRAFTOVI with strong or moderate CYP3A4 inhibitors (including grapefruit juice) or CYP3A4 inducers and use caution with sensitive CYP3A4 substrates. Avoid coadministration of BRAFTOVI with hormonal contraceptives. Modify BRAFTOVI dose if coadministration with a strong or moderate CYP3A4 inhibitor cannot be avoided. Avoid coadministration of BRAFTOVI with drugs known to prolong QT/QTc interval. Dose reductions of drugs that are substrates of OATP1B1, OATP1B3, or BCRP may be required when used concomitantly with BRAFTOVI. Lactation: Advise women not to breastfeed during treatment with BRAFTOVI and MEKTOVI and for 2 weeks after the final dose. Infertility: Advise males of reproductive potential that BRAFTOVI may impair fertility. For BRAF -mt metastatic melanoma and for BRAF -mt metastatic NSCLC, see full Prescribing Information and Medication Guide for BRAFTOVI and full Prescribing Information and Medication Guide for MEKTOVI. See full Prescribing Information for BRAFTOVI and for MEKTOVI for dose modifications for adverse reactions. There may be a delay as the documents are updated with the latest information. They will be available as soon as possible. Please check back for the updated full information shortly. For BRAF -mt metastatic CRC, see full Prescribing Information and Medication Guide for BRAFTOVI. See full Prescribing Information for BRAFTOVI for dose modifications for adverse reactions. Refer to cetuximab prescribing information for recommended dosing and safety information. About Pfizer Oncology At Pfizer Oncology, we are at the forefront of a new era in cancer care. Our industry-leading portfolio and extensive pipeline includes three core mechanisms of action to attack cancer from multiple angles, including small molecules, antibody-drug conjugates (ADCs), and bispecific antibodies, including other immune-oncology biologics. We are focused on delivering transformative therapies in some of the world’s most common cancers, including breast cancer, genitourinary cancer, hematology-oncology, and thoracic cancers, which includes lung cancer. Driven by science, we are committed to accelerating breakthroughs to help people with cancer live better and longer lives. About Pfizer: Breakthroughs That Change Patients’ Lives At Pfizer, we apply science and our global resources to bring therapies to people that extend and significantly improve their lives. We strive to set the standard for quality, safety and value in the discovery, development and manufacture of health care products, including innovative medicines and vaccines. Every day, Pfizer colleagues work across developed and emerging markets to advance wellness, prevention, treatments and cures that challenge the most feared diseases of our time. Consistent with our responsibility as one of the world’s premier innovative biopharmaceutical companies, we collaborate with health care providers, governments and local communities to support and expand access to reliable, affordable health care around the world. For 175 years, we have worked to make a difference for all who rely on us. We routinely post information that may be important to investors on our website at www.Pfizer.com . In addition, to learn more, please visit us on www.Pfizer.com and follow us on X at @Pfizer and @Pfizer News , LinkedIn , YouTube and like us on Facebook at Facebook.com/Pfizer . Disclosure Notice The information contained in this release is as of September 14, 2024. Pfizer assumes no obligation to update forward-looking statements contained in this release as the result of new information or future events or developments. This release contains forward-looking information about the BRAFTOVI ® (encorafenib) and MEKTOVI® (binimetinib) combination for the treatment of patients with metastatic non-small cell lung cancer (NSCLC) with a BRAF V600E mutation, other potential indications and a next-generation BRAF inhibitor, including their potential benefits, that involves substantial risks and uncertainties that could cause actual results to differ materially from those expressed or implied by such statements. Risks and uncertainties include, among other things, uncertainties regarding the commercial success of BRAFTOVI plus MEKTOVI; the uncertainties inherent in research and development, including the ability to meet anticipated clinical endpoints, commencement and/or completion dates for our clinical trials, regulatory submission dates, regulatory approval dates and/or launch dates, as well as the possibility of unfavorable new clinical data and further analyses of existing clinical data; the risk that clinical trial data are subject to differing interpretations and assessments by regulatory authorities; whether regulatory authorities will be satisfied with the design of and results from our clinical studies; whether and when any drug applications may be filed in any additional jurisdictions for BRAFTOVI plus MEKTOVI for the treatment of patients with metastatic NSCLC with a BRAF V600E mutation or in any jurisdictions for any other potential indications for BRAFTOVI and MEKTOVI or any other product candidates; whether and when any such applications may be approved by regulatory authorities, which will depend on a myriad factors, including making a determination as to whether the product's benefits outweigh its known risks and determination of the product's efficacy and, if approved, whether BRAFTOVI plus MEKTOVI or any such other product candidates will be commercially successful; decisions by regulatory authorities impacting labeling, manufacturing processes, safety and/or other matters that could affect the availability or commercial potential of BRAFTOVI plus MEKTOVI or any other product candidates; uncertainties regarding the impact of COVID-19 on Pfizer’s business, operations and financial results; and competitive developments. A further description of risks and uncertainties can be found in Pfizer’s Annual Report on Form 10-K for the fiscal year ended December 31, 2023, and in its subsequent reports on Form 10-Q, including in the sections thereof captioned “Risk Factors” and “ Forward-Looking Information and Factors That May Affect Future Results”, as well as in its subsequent reports on Form 8-K, all of which are filed with the U.S. Securities and Exchange Commission and available at www.sec.gov and www.pfizer.com . References 1 World Health Organization. International Agency for Research on Cancer. GLOBOCAN 2022: Global Population Fact sheet. Available at: https://gco.iarc.who.int/media/globocan/factsheets/populations/900-world-fact-sheet.pdf . Last accessed: September 2024. 2 American Cancer Society. What is lung cancer? Available at: https://www.cancer.org/cancer/lung-cancer/about/what-is.html . Last accessed: September 2024. 3 American Lung Association. BRAF and lung cancer. Available at: https://www.lung.org/lung-health-diseases/lung-disease-lookup/lung-cancer/symptoms-diagnosis/biomarker-testing/braf . Last accessed: September 2024. 4 Paik PK, Arcila ME, Fara M, et al . Clinical characteristics of patients with lung adenocarcinomas harboring BRAF mutations. J Clin Oncol . 2011;29(15):2046-51. 5 Cheng L, Lopez-Beltran A, Massari F, et al . Molecular testing for BRAF mutations to inform melanoma treatment decisions: a move toward precision medicine. Mod Pathol . 2018;31(1):24-38. 6 Safaee Ardekani G, Jafarnejad, SM, Tan, L, et al . The prognostic value of BRAF mutation in colorectal cancer and melanoma: a systematic review and meta-analysis. PloS ONE . 2012;7(10):e47054.

NEW YORK--( BUSINESS WIRE )--Pfizer Inc. (NYSE: PFE) continues to showcase potential practice-changing research and next-generation candidates across its robust Oncology portfolio at the European Society for Medical Oncology (ESMO) Congress 2024, being held September 13-17 in Barcelona. Data from more than 50 company-sponsored, investigator-sponsored and collaborative research abstracts, including more than 10 oral and mini-oral presentations, will be presented across the company’s tumor areas and core scientific modalities, as well as a potential treatment for a cancer-related condition. “ At this year’s ESMO, we are looking forward to demonstrating our progress toward delivering next-generation biologics and novel combinations that have the potential to be new standards of care for patients,” said Chris Boshoff, Chief Oncology Officer and Executive Vice President, Pfizer. “ Our key data presentations highlight our scientific leadership in developing targeted therapies, including small molecules and antibody-drug conjugates, across our core tumor areas, including breast, bladder and thoracic cancers.” “ At ESMO, Pfizer will share important data highlighting our commitment to transforming outcomes for patients living with lung cancer, including longer-term follow-up results from the BRAFTOVI + MEKTOVI PHAROS study in BRAF V600E-mutated metastatic non-small cell lung cancer,” said Karin Tollefson, Chief Oncology Medical Officer, Pfizer. “ We are also looking forward to sharing progress on our industry-leading pipeline of new molecules, including encouraging early results for two novel, investigational antibody-drug conjugates and preliminary data on a novel combination of Pfizer’s next-generation CDK inhibitors.” Key research includes a late-breaking presentation of updated results from the pivotal Phase 2 PHAROS* study of BRAFTOVI (encorafenib) + MEKTOVI (binimetinib) in patients with BRAF V600E-mutant metastatic non-small cell lung cancer (mNSCLC). Longer-term efficacy and safety data will be presented, following the initial primary overall response results (ORR) that supported the FDA approval for BRAFTOVI + MEKTOVI in this indication in 2023 and the recent approval by the European Commission in August 2024. Further, Pfizer will share updated data from the safety lead-in of the ongoing Phase 3 BREAKWATER trial, showing antitumor activity of BRAFTOVI + cetuximab + FOLFIRI in patients with untreated BRAF V600E-mutant metastatic colorectal cancer (mCRC) in a mini-oral presentation. Additionally, Pfizer will present a late-breaking Proffered Paper Presentation on the Phase 2 efficacy and safety results for its GDF-15 inhibitor, ponsegromab, in patients with cancer-associated cachexia, highlighting the company’s commitment to improving the treatment journey for people living with cancer. Cancer cachexia is a common, life-threatening wasting condition characterized by severe weight loss. The condition affects patients with advanced cancers and can greatly impact a patient’s ability to tolerate cancer treatment and quality of life. Despite its severity, there are no FDA-approved treatments for cachexia. i,ii Pfizer will also present early clinical-stage research for a number of priority pipeline areas, including encouraging Phase 1 results of the potential first-in-class antibody-drug conjugate (ADC) candidate SGN-PDL1V (PF-08046054) in NSCLC and head and neck squamous cell carcinoma (HNSCC); initial data for the investigational ADC disitamab vedotin in combination with KEYTRUDA ® (pembrolizumab) in human epidermal growth factor receptor 2 (HER2)-expressing locally advanced or metastatic urothelial cancer (la/mUC); and the first data combining atirmociclib, our highly-selective cyclin-dependent kinase 4 (CDK4) inhibitor (CDK4i), with a novel CDK2 inhibitor (CDK2i) in hormone receptor-positive (HR+)/HER2-negative metastatic breast cancer (MBC) from a Phase 1 dose-escalation study. Key ESMO Presentations Genitourinary Cancer PADCEV + KEYTRUDA**: additional analysis from the pivotal EV-302 trial continues to support the combination as a new standard of care for patients with previously untreated la/mUC. An exploratory analysis shows PADCEV + KEYTRUDA ® showed consistent progression free survival (PFS), overall survival (OS), and ORR versus chemotherapy regardless of Nectin-4 or PD-L1 expression. Disitamab Vedotin: preliminary efficacy and safety data for disitamab vedotin in combination with KEYTRUDA highlights Pfizer’s continued commitment to developing novel therapeutics to meet the needs of patients with bladder cancer. Results from the safety run-in of the ongoing Phase 2 trial showed encouraging early efficacy and a safety profile consistent with previously presented data in treatment-naive patients with HER2-expressing la/mUC. Thoracic Cancer SGN-PDL1V (PF-08046054): encouraging Phase 1 results will be presented for PDL1V, a novel, investigational vedotin ADC directed to PD-L1-expressing solid tumors. Data from the dose-escalation and dose optimization cohorts of the ongoing Phase 1 study show PDL1V as monotherapy was generally well tolerated with no unexpected adverse events, and encouraging antitumor activity was observed in patients with heavily pretreated NSCLC and HNSCC. Breast Cancer Atirmociclib (PF-07220060) + PF-07104091 : initial data from a dose-escalation study evaluating the innovative combination of atirmociclib, a potential first-in-class CDK4-selective inhibitor, with PF-07104091, a novel CDK2-selective inhibitor, showed a manageable safety profile and encouraging efficacy in patients with heavily pretreated HR+/HER2- breast cancer. These early results highlight the potential of Pfizer's strategy to advance atirmociclib as a future CDK inhibitor backbone therapy that may address treatment resistance with first generation CDK4/6i, subject to clinical success and regulatory approval. The CDK4i+2i combination is continuing to be explored in an ongoing Phase 1b/2 dose escalation and dose expansion study (NCT05262400). Additional information on the Pfizer-sponsored abstracts, including date and time of presentation, follow in the chart below. Pfizer is continuing its commitment to help non-scientists understand the latest findings with the development of abstract plain language summaries (APLS) for company-sponsored research being presented at ESMO, which are written in non-technical language. Those interested in learning more can visit www.Pfizer.com/apls to access the summaries starting September 16, 2024. BREAST CANCER Mini Oral Presentation (Abstract 618MO) Saturday, September 14, 2:45 PM-4:15 PM CEST Phase 1b/2 first-in-class novel combination trial of next generation CDK4-selective inhibitor PF-07220060 and next generation CDK2-selective inhibitor PF-07104091 in HR+ HER2- metastatic breast cancer and advanced solid tumors Yap et al Poster Presentation (Abstract 413P) Monday, September 16, 9:00 AM-5:00 PM CEST Longitudinal circulating tumor DNA (ctDNA) dynamics in Phase 1/2a study of the first-in-class CDK4-selective inhibitor, PF-07220060, in combination with endocrine therapy in patients with HR+/HER2− metastatic breast cancer (mBC) who progressed on prior CDK4/6 inhibitors Yap et al Poster Presentation (Abstract 359P) Monday, September 16, 9:00 AM-5:00 PM CEST Overall survival of palbociclib (PAL) + endocrine therapy (ET) in Japanese patients with hormone receptor-positive (HR+)/ human epidermal growth factor receptor 2-negative (HER2-) advanced breast cancer (ABC) in the 1st line (1L) or 2nd line (2L) setting: A multicenter observational study Nakayama et al Poster Presentation (Abstract 354P) Monday, September 16, 9:00 AM-5:00 PM CEST Synergistic preclinical efficacy through combination of the CDK4 and CDK2 selective inhibitors, PF-07220060 and PF-07104091, respectively, in HR+ HER2- breast cancer Anders et al Poster Presentation (Abstract 356P) Monday, September 16, 9:00 AM-5:00 PM CEST Real-world effectiveness in subgroups of palbociclib + endocrine therapy in HR+/HER2- ABC patients: Interim Results of the PERFORM study Pfeiler et al EARLY PIPELINE Oral Presentation, Proffered Paper (Abstract 607O) Friday, September 13, 4:00 PM-5:30 PM CEST Interim results of a Phase 1 study of SGN-PDL1V (PF-08046054) in patients with PDL1-expressing solid tumors Oliva Bernal et al GASTROINTESTINAL CANCER Mini Oral Presentation (Abstract 515MO) Saturday, September 14, 2:45 PM-4:15 PM CEST Encorafenib + cetuximab (EC) + FOLFIRI for BRAF V600E-mutant metastatic colorectal cancer (mCRC): updated results from the BREAKWATER safety lead-in (SLI) Tabernero et al GENITOURINARY CANCER Mini Oral Presentation (Abstract 1966MO) Sunday, September 15, 8:30 AM-10:00 AM CEST EV-302: Exploratory analysis of nectin-4 expression and response to 1L enfortumab vedotin (EV) + pembrolizumab (P) in previously untreated locally advanced or metastatic urothelial cancer (la/mUC) Powles et al Poster Presentation (Abstract 1968P) Sunday, September 15, 9:00 AM-5:00 PM CEST Study EV-103 dose escalation/cohort A (DE/A): 5y follow-up of first-line (1L) enfortumab vedotin (EV) + pembrolizumab (P) in cisplatin (cis)-ineligible locally advanced or metastatic urothelial carcinoma (la/mUC) Rosenberg et al Poster Presentation (Abstract 2001P) Sunday, September 15, 9:00 AM-5:00 PM CEST Epidemiology and treatment patterns of patients with locally advanced or metastatic urothelial cancer in France: a non-interventional database study Joly et al Poster Presentation (Abstract 1638P) Sunday, September 15, 9:00 AM-5:00 PM CEST Enzalutamide (ENZA) with or without leuprolide in patients (pts) with high-risk biochemically recurrent (hrBCR) prostate cancer (PC): EMBARK post hoc analysis by age Shore et al Poster Presentation (Abstract 1626P) Sunday, September 15, 9:00 AM-5:00 PM CEST Incidence of hematologic toxicities in the homologous recombination repair (HRR)-deficient population of the TALAPRO-2 trial and their potential association with germline vs somatic origin of HRR gene alterations Azad et al Poster Presentation (Abstract 1637P) Sunday, September 15, 9:00 AM-5:00 PM CEST Efficacy of talazoparib and enzalutamide in metastatic castration-resistant prostate cancer (mCRPC) patients previously treated with androgen receptor pathway inhibitors (ARPI) or docetaxel – post hoc analysis from both cohorts in TALAPRO-2 study Agarwal et al Poster Presentation (Abstract 1633P) Sunday, September 15, 9:00 AM-5:00 PM CEST Phase 3 study of talazoparib (TALA) + enzalutamide (ENZA) vs placebo (PBO) + ENZA as first-line (1L) treatment in patients (pts) with metastatic castration-resistant prostate cancer (mCRPC): TALAPRO-2 (TP-2) China cohort Zeng et al Mini Oral Presentation (Abstract 1967MO) Sunday, September 15, 8:30 AM-10:00 AM CEST Preliminary efficacy and safety of disitamab vedotin (DV) with pembrolizumab (P) in treatment (Tx)-naive HER2-expressing, locally advanced or metastatic urothelial carcinoma (la/mUC): RC48G001 Cohort C Galsky et al MELANOMA Poster Presentation (Abstract 1071TiP) Saturday, September 14, 9:00 AM-5:00 PM CEST Phase 1 study of the investigational CD228 x 4-1BB costimulatory antibody Anticalin bispecific SGN-BB228 (PF-08046049) in advanced melanoma and other solid tumors Dummer et al SUPPORTIVE AND PALLIATIVE CARE Oral Presentation, Proffered Paper (Abstract LBA82) Saturday, September 14, 2:45 PM-4:25 PM CEST Efficacy and safety of ponsegromab, a first-in-class, monoclonal antibody inhibitor of growth differentiation factor-15, in patients with cancer cachexia: A randomized, placebo-controlled, Phase 2 study Crawford et al THORACIC CANCER Mini Oral Presentation (Abstract LBA56) Saturday, September 14, 10:15 AM-11:45 AM CEST Updated efficacy and safety from the Phase 2 PHAROS study of encorafenib plus binimetinib in patients with BRAF V600E-mutant metastatic NSCLC (mNSCLC) Riely et al Poster Presentation (Abstract 1398TiP) Saturday, September 14, 9:00 AM-5:00 PM CEST Be6A Lung-01, a Phase 3 study of sigvotatug vedotin (SV), an investigational antibody-drug conjugate (ADC) versus docetaxel in patients (pts) with previously treated non-small cell lung cancer (NSCLC) Peters et al Poster Presentation (Abstract 1279P) Saturday, September 14, 9:00 AM-5:00 PM CEST First-line lorlatinib vs crizotinib in Asian patients with ALK+ non-small cell lung cancer (NSCLC): 5-year outcomes from the CROWN study Wu et al *The PHAROS trial is conducted with support from Pierre Fabre. **Pfizer and Astellas have a clinical collaboration agreement with Merck to evaluate the combination of PADCEV ® and KEYTRUDA ® in patients with previously untreated metastatic urothelial cancer. Prescribing Information for Pfizer Medicines Please see full Prescribing Information for PADCEV. Please see full Prescribing Information for BRAFTOVI and full Prescribing Information for MEKTOVI. About Pfizer Oncology At Pfizer Oncology, we are at the forefront of a new era in cancer care. Our industry-leading portfolio and extensive pipeline includes three core mechanisms of action to attack cancer from multiple angles, including antibody-drug conjugates (ADCs), small molecules, bispecific antibodies and other immunotherapy biologics. We are focused on delivering transformative therapies in some of the world’s most common cancers, including breast cancer, genitourinary cancer, hematology-oncology, and thoracic cancers, which includes lung cancer. Driven by science, we are committed to accelerating breakthroughs that help people with cancer globally live better and longer lives. About Pfizer: Breakthroughs That Change Patients’ Lives At Pfizer, we apply science and our global resources to bring therapies to people that extend and significantly improve their lives. We strive to set the standard for quality, safety and value in the discovery, development and manufacture of health care products, including innovative medicines and vaccines. Every day, Pfizer colleagues work across developed and emerging markets to advance wellness, prevention, treatments and cures that challenge the most feared diseases of our time. Consistent with our responsibility as one of the world's premier innovative biopharmaceutical companies, we collaborate with health care providers, governments and local communities to support and expand access to reliable, affordable health care around the world. For 175 years, we have worked to make a difference for all who rely on us. We routinely post information that may be important to investors on our website at www.Pfizer.com . In addition, to learn more, please visit us on www.Pfizer.com and follow us on X at @Pfizer and @Pfizer News , LinkedIn , YouTube and like us on Facebook at Facebook.com/Pfizer . DISCLOSURE NOTICE: The information contained in this release is as of September 11, 2024. The Company assumes no obligation to update forward-looking statements contained in this release as the result of new information or future events or developments. This release contains forward-looking information about Pfizer Oncology, Pfizer’s Oncology portfolio of marketed and investigational therapies, including combinations, and an investigational therapy for a cancer-related condition; expectations for our product pipeline, in-line products and product candidates, including their potential benefits, clinical trial results and other developing data; potential breakthrough, best- or first-in-class or blockbuster status or expected market entry of our medicines; and other statements about our business, operations and financial results that involves substantial risks and uncertainties that could cause actual results to differ materially from those expressed or implied by such statements. Risk and uncertainties include, among other things, uncertainties regarding the commercial success of Pfizer’s oncology portfolio; the uncertainties inherent in research and development, including the ability to meet anticipated clinical endpoints, commencement and/or completion dates for our clinical trials, regulatory submission dates, regulatory approval dates and/or launch dates, as well as the possibility of unfavorable new clinical data and further analyses of existing clinical data; risks associated with interim and preliminary data; the risk that clinical trial data are subject to differing interpretations and assessments by regulatory authorities; whether regulatory authorities will be satisfied with the design of and results from our clinical studies; whether and when any drug applications, biologics license applications and/or emergency use authorization applications may be filed in any jurisdictions for any potential indication for Pfizer’s product candidates; whether and when any such applications that may be pending or filed for any of Pfizer’s product candidates may be approved by regulatory authorities, which will depend on myriad factors, including making a determination as to whether the product's benefits outweigh its known risks and determination of the product's efficacy and, if approved, whether any such product candidates will be commercially successful; decisions by regulatory authorities impacting labeling, manufacturing processes, safety and/or other matters that could affect the availability or commercial potential of Pfizer’s products or product candidates, including development of products or therapies by other companies; manufacturing capabilities or capacity; uncertainties regarding the impact of COVID-19 on Pfizer’s business, operations and financial results; and competitive developments. A further description of risks and uncertainties can be found in Pfizer’s Annual Report on Form 10-K for the fiscal year ended December 31, 2023 and in its subsequent reports on Form 10-Q, including in the sections thereof captioned “Risk Factors” and “ Forward-Looking Information and Factors That May Affect Future Results”, as well as in its subsequent reports on Form 8-K, all of which are filed with the U.S. Securities and Exchange Commission and available at www.sec.gov and www.pfizer.com . i Cleveland Clinic. Cachexia (Wasting Syndrome). Cachexia (Wasting Syndrome): Symptoms & Treatment (clevelandclinic.org) . Accessed September 3, 2024. ii Lisa Martin, Michael B. Sawyer, Cancer Cachexia: Emerging Preclinical Evidence and the Pathway Forward to Clinical Trials, JNCI: Journal of the National Cancer Institute , Volume 107, Issue 12, December 2015, djv322, https://doi.org/10.1093/jnci/djv322 Category: Pipeline