A Phase 1, Open-label, Dose Escalation and Dose Expansion Study of CLN-978 in Patients With Relapsed/Refractory (R/R) B-cell Non-Hodgkin Lymphoma (B-NHL)

CLN-978-001 is a Phase 1, open-label, dose escalation and dose expansion study of CLN-978 in patients with Relapse/Refractory (R/R) B-cell Non-Hodgkin Lymphoma (B-NHL).

Start Date31 May 2023

Sponsor / Collaborator

Cullinan Oncology LLC

100 Clinical Results associated with CLN-978

100 Translational Medicine associated with CLN-978

100 Patents (Medical) associated with CLN-978

Literatures (Medical) associated with CLN-978

01 Dec 2023·Journal for immunotherapy of cancer

Correction: CLN-978, a novel half-life extended CD19/CD3/HSA-specific T cell-engaging antibody construct with potent activity against B-cell malignancies with low CD19 expression

Article

01 Aug 2023·Journal for immunotherapy of cancer

CLN-978, a novel half-life extended CD19/CD3/HSA-specific T cell-engaging antibody construct with potent activity against B-cell malignancies with low CD19 expression

Article

Author: Meetze, Kristan ; Baeuerle, Patrick A ; Mehta, Naveen K ; Li, Bochong ; Michaelson, Jennifer S

Background:

Despite significant progress in the development of T cell-engaging therapies for various B-cell malignancies, a high medical need remains for the refractory disease setting, often characterized by suboptimal target levels.

Methods:

To address this issue, we have developed a 65-kDa multispecific antibody construct, CLN-978, with affinities tuned to optimize the killing of low-CD19 expressing tumor cells. CLN-978 bound to CD19 on B cells with picomolar affinity, and to CD3ε on T cells with nanomolar affinity. A serum albumin binding domain was incorporated to extend serum half-life. In this setting, we biophysically characterize and report the activities of CLN-978 in cell co-culture assays, multiple mouse models and non-human primates.

Results:

Human T cells redirected by CLN-978 could eliminate target cells expressing less than 300 copies of CD19 on their surface. The half-life extension and high affinity for CD19 led to significant antitumor activity in murine lymphoma models at very low doses of CLN-978. In primates, we observed a long serum half-life, deep and sustained depletion of normal B cells, and remarkable tolerability, in particular, reduced cytokine release when CLN-978 was administered subcutaneously.

Conclusions:

CLN-978 warrants further exploration. An ongoing clinical phase 1 trial is investigating safety, pharmacokinetics, pharmacodynamics, and the initial therapeutic potential of subcutaneously administered CLN-978 in patients with non-Hodgkin’s lymphoma.

News (Medical) associated with CLN-978

19 Nov 2024

·www.prnewswire.com

Systemic Lupus Erythematosus Clinical Trial Pipeline Gains Momentum as 120+ Key Companies at the Forefront | DelveInsight

Systemic Lupus Erythematosus (SLE) is a chronic autoimmune disease characterized by inflammation and tissue damage across multiple organ systems, such as the skin, joints, kidneys, heart, and brain. The incidence of autoimmune diseases, including SLE, has been increasing globally, with a significant impact on demand for targeted and effective therapies. LAS VEGAS, Nov. 19, 2024 /PRNewswire/ -- DelveInsight's ' Systemic Lupus Erythematosus Pipeline Insight 2024 ' report provides comprehensive global coverage of pipeline systemic lupus erythematosus therapies in various stages of clinical development, major pharmaceutical companies are working to advance the pipeline space and future growth potential of the systemic lupus erythematosus pipeline domain. Key Takeaways from the Systemic Lupus Erythematosus Pipeline Report DelveInsight's systemic lupus erythematosus pipeline report depicts a robust space with 120+ active players working to develop 140+ pipeline therapies for systemic lupus erythematosus treatment. Key systemic lupus erythematosus companies such as Roche, ImmuPharma, UCB, Idorsia Pharmaceuticals, Biogen, AbbVie, Bristol-Myers Squibb, Vera Therapeutics, Beijing Mabworks Biotech Co., Ltd., BeiGene, Jiangsu Renocell Biotech Company, AstraZeneca, Pfizer, Red de Terapia Celular, Kira Pharmacenticals (US), LLC., Jemincare, Galapagos NV, Alumis, argenx, Gilead Sciences, Novartis, Zenas Biopharma, Horizon Therapeutics, Provention Bio, Janssen Research & Development, Eli Lilly and Company, Medsenic, Sanofi, Merck KGaA, Resolve Therapeutics, ILTOO, Janssen, Alpine Immune Sciences, Kezar Life Sciences, Neovacs, Kangpu Biopharmaceuticals, Cartesian Therapeutics, Apellis Pharmaceuticals, Inc., Alexion Pharmaceuticals, Inc., Q32 Bio Inc., Conduit Pharmaceuticals, Miltenyi Biomedicine GmbH, Kyverna Therapeutics, ImmPACT Bio, Genrix (Shanghai) Biopharmaceutical Co., Ltd., Gracell Biotechnologies (Shanghai) Co., Ltd., Cabaletta Bio, Tenet Medicines, Ascentage Pharma Group Inc., InnoCare, Eisai, Sorrento Therapeutics, Carna Bioscience, Yake Biotechnology, Equillium, Daiichi Sankyo Company, SinoMab Bioscience Ltd, Citryll BV, Sareum, Shanghai Junshi Biosciences, Chia Tai Tianqing Pharmaceutical Group Co., Ltd., Millennium Pharmaceuticals, Inc., Takeda, Synthekine, Hangzhou Sumgen Biotech Co., Ltd., Sana Biotechnology, Hoffmann-La Roche, Guangdong Ruishun Biotech Co., Ltd, Shanghai Ming Ju Biotechnology Co., Ltd., Autolus Limited, Nkarta, Inc., Luminary Therapeutics, Kyowa Kirin Co., Ltd., Shanghai Ming Ju Biotechnology, IGM Biosciences, Inc., GlaxoSmithKline, Fate Therapeutics, Cugene Inc., Century Therapeutics, Inc., Cullinan Therapeutics Inc., Juno Therapeutics, Inc., EdiGene Inc., Atara Biotherapeutics, Annexon, Inc., Adicet Therapeutics, Bioray Laboratories, PersonGen BioTherapeutics (Suzhou) Co., Ltd., Juventas Cell Therapy Ltd., Nanjing Bioheng Biotech Co., Ltd., Pregene ShenZhen Biotechnology, Artiva Bio, KeyMed Biosciences, IASO, JW Therapeutics, ROME Therapeutics, Ventus Therapeutics, Allosite Therapeutics, iCell Gene Therapeutics, Caribou Biosciences, LongBio Pharma, Amytrx Therapeutics, Corestem, Eliem Therapeutics, SinoMab Bioscience Ltd., and others are evaluating new systemic lupus erythematosus drugs to improve the treatment landscape. Promising systemic lupus erythematosus pipeline therapies such as Obinutuzumab, Lupuzor (IPP-201101), Dapirolizumab pegol, Cenerimod, BIIB059, Upadacitinib, Deucravacitinib, Atacicept, MIL62, Zanubrutinib, RY_SW01 cell injection|Basic treatment, Ravulizumab, Rapcabtagene autoleucel, PF-06823859, Mesenchymal stem cells (MSC), KP104, JMKX000189, Iptacopan, GLPG3667, ESK-001, Elsubrutinib, Efgartigimod alfa, Edecesertib, Ianalumab, Obexelimab (XmAb5871), Daxdilimab (VIB7734), PRV-3279, Nipocalimab, ABBV 599, NKTR-358 (LY3471851), Arscimed, SAR441344, Enpatoran, RSLV-132, Aldesleukin, Daratumumab, Branebrutinib, BMS-986256, ALPN-101, KZR-616, IFNα kinoid, KPG 818, Descartes-08, CFZ533, APL-2, ALXN2050, ADX-097, AZD1656, MB-CART19.1, KYV-101, IMPT-514, GR1603, GC012F Injection, CABA-201, Budoprutug, APG-2575, ICP-022, E6742, ALPN-303, AC0058, Mosunetuzumab, AS-0871, CD19/BCMA CAR T-cells, PF-06835375, EQ001 (Itolizumab), DS-7011a, SM03, CIT-013, SDC-1801, UBP1213, TQB3702, TAK-079, TAK-007, SYNCAR-001, SG301, SC291, RO7507062, RJMty19 (CD19-CAR-DNT cells), Relma-cel, PIT565, Obecabtagene autoleucel (obe-cel), NKX019, LMY-920, KK4277, JWCAR201, Imvotamab, GSK4527363, GSK4347859, FT819, CUG252, CNTY-101, CLN-978, CC-97540, Belantamab, ATHENA CAR-T ATA3219, ANX009, ADI-001, BRL-301, T-cell injection targeting CD19 chimeric antigen receptor, CNCT19, RD06-04, PRG-2311, PRG-1801, AlloNK, CM313, CT103A, JWCAR 029, Research program: endogenous reverse transcriptase inhibitors, VENT 03, ONT01, BCMA-CD19 cCAR T cells, CB-010, LP-005, AMTX 100, CE211AT15, TN-119, SN1011, QX002N, RSLV-145, Recombinant human plasma gelsolin, LN-008, TST 008, IBL 100s, and others are under different phases of systemic lupus erythematosus clinical trials. In October 2024, the FDA approved the investigational new drug (IND) application for Cullinan Therapeutics' CLN-978 to treat systemic lupus erythematosus (SLE). In September 2024, Cartesian Therapeutics, Inc. announced that the U.S. Food and Drug Administration (FDA) has granted Rare Pediatric Disease Designation to Descartes-08 for the treatment of juvenile dermatomyositis (JDM). In September 2024, Caribou Biosciences announced that the U.S. Food and Drug Administration (FDA) had granted fast-track designation to CAR T-cell therapy CB-010 for systemic lupus erythematosus (SLE). In September 2024, UCB and Biogen reported successful results from their Phase III clinical trial of the PHOENYCS GO study, which tested dapirolizumab pegol as a treatment for moderate-to-severe systemic lupus erythematosus. In August 2024, Conduit Pharmaceuticals announced they will be conducting a Phase IIa clinical trial to evaluate AZD1656 for the treatment of multiple autoimmune diseases, including systemic lupus erythematosus (SLE). In July 2024, the first individual received the therapy Descartes-08 to treat systemic lupus erythematosus. This therapy has been previously administered to patients with myasthenia gravis, a long-term autoimmune disorder characterized by muscle weakness. In February 2024, Idorsia Pharmaceuticals formed a major global research and development partnership with Viatris to advance and commercialize two Phase III assets, selatogrel and cenerimod, on a global scale. Request a sample and discover the recent advances in systemic lupus erythematosus treatment drugs @ Systemic Lupus Erythematosus Pipeline Report The systemic lupus erythematosus pipeline report provides detailed profiles of pipeline assets, a comparative analysis of clinical and non-clinical stage systemic lupus erythematosus drugs, inactive and dormant assets, a comprehensive assessment of driving and restraining factors, and an assessment of opportunities and risks in the systemic lupus erythematosus clinical trial landscape. Systemic Lupus Erythematosus Overview Systemic lupus erythematosus (SLE) is a chronic autoimmune disease in which the immune system mistakenly attacks healthy tissues in various parts of the body. The exact cause of SLE is unknown, but it is believed to result from a combination of genetic, environmental, and hormonal factors. Common triggers include infections, sunlight exposure, and certain medications. Women, particularly of childbearing age, are more commonly affected. Symptoms of SLE vary widely and can affect many organ systems, leading to a wide range of clinical presentations. Common symptoms include fatigue, joint pain, skin rashes, photosensitivity, and fever. More severe cases can affect the kidneys, heart, lungs, and central nervous system, potentially leading to life-threatening complications. Diagnosis of SLE is based on a combination of clinical features and laboratory tests. The antinuclear antibody (ANA) test is a common initial screening tool, but additional tests like anti-double stranded DNA (anti-dsDNA) and anti-Smith antibodies, as well as assessments of kidney and liver function, are often necessary. Diagnosis can be challenging because SLE symptoms often mimic those of other diseases. Treatment for SLE focuses on managing symptoms and preventing flares. Mild cases may be treated with nonsteroidal anti-inflammatory drugs (NSAIDs) and antimalarial drugs like hydroxychloroquine. More severe cases may require corticosteroids, immunosuppressive drugs such as azathioprine, methotrexate, or newer biologics like belimumab. Lifestyle modifications, such as avoiding excessive sun exposure and managing stress, are also essential in controlling the disease. Find out more about systemic lupus erythematosus treatment drugs @ Drugs for Systemic Lupus Erythematosus Treatment A snapshot of the Systemic Lupus Erythematosus Pipeline Drugs mentioned in the report: Learn more about the emerging systemic lupus erythematosus pipeline therapies @ Systemic Lupus Erythematosus Clinical Trials Systemic Lupus Erythematosus Therapeutics Assessment The systemic lupus erythematosus pipeline report proffers an integral view of the systemic lupus erythematosus emerging novel therapies segmented by stage, product type, molecule type, mechanism of action, and route of administration. Scope of the Systemic Lupus Erythematosus Pipeline Report Coverage: Global Therapeutic Assessment By Product Type: Mono, Combination, Mono/Combination Therapeutic Assessment By Clinical Stages: Discovery, Pre-clinical, Phase I, Phase II, Phase III Therapeutics Assessment By Route of Administration: Intra-articular, Intraocular, Intrathecal, Intravenous, Ophthalmic, Oral, Parenteral, Subcutaneous, Topical, Transdermal Therapeutics Assessment By Molecule Type: Oligonucleotide, Peptide, Small molecule Therapeutics Assessment By Mechanism of Action: Antibody-dependent cell cytotoxicity, Cell death inhibitors, Cell death stimulants, Immunomodulators, CD40 ligand inhibitors, Sphingosine 1 phosphate receptor modulators, Calcineurin inhibitors, Immunosuppressants, Janus kinase 1 inhibitors, TYK2 kinase inhibitors, B cell activating factor inhibitors, Tumour necrosis factor ligand superfamily member 13 inhibitors Key Systemic Lupus Erythematosus Companies: Roche, ImmuPharma, UCB, Idorsia Pharmaceuticals, Biogen, AbbVie, Bristol-Myers Squibb, Vera Therapeutics, Beijing Mabworks Biotech Co., Ltd., BeiGene, Jiangsu Renocell Biotech Company, AstraZeneca, Pfizer, Red de Terapia Celular, Kira Pharmacenticals (US), LLC., Jemincare, Galapagos NV, Alumis, argenx, Gilead Sciences, Novartis, Zenas Biopharma, Horizon Therapeutics, Provention Bio, Janssen Research & Development, Eli Lilly and Company, Medsenic, Sanofi, Merck KGaA, Resolve Therapeutics, ILTOO, Janssen, Alpine Immune Sciences, Kezar Life Sciences, Neovacs, Kangpu Biopharmaceuticals, Cartesian Therapeutics, Apellis Pharmaceuticals, Inc., Alexion Pharmaceuticals, Inc., Q32 Bio Inc., Conduit Pharmaceuticals, Miltenyi Biomedicine GmbH, Kyverna Therapeutics, ImmPACT Bio, Genrix (Shanghai) Biopharmaceutical Co., Ltd., Gracell Biotechnologies (Shanghai) Co., Ltd., Cabaletta Bio, Tenet Medicines, Ascentage Pharma Group Inc., InnoCare, Eisai, Sorrento Therapeutics, Carna Bioscience, Yake Biotechnology, Equillium, Daiichi Sankyo Company, SinoMab Bioscience Ltd, Citryll BV, Sareum, Shanghai Junshi Biosciences, Chia Tai Tianqing Pharmaceutical Group Co., Ltd., Millennium Pharmaceuticals, Inc., Takeda, Synthekine, Hangzhou Sumgen Biotech Co., Ltd., Sana Biotechnology, Hoffmann-La Roche, Guangdong Ruishun Biotech Co., Ltd, Shanghai Ming Ju Biotechnology Co., Ltd., Autolus Limited, Nkarta, Inc., Luminary Therapeutics, Kyowa Kirin Co., Ltd., Shanghai Ming Ju Biotechnology, IGM Biosciences, Inc., GlaxoSmithKline, Fate Therapeutics, Cugene Inc., Century Therapeutics, Inc., Cullinan Therapeutics Inc., Juno Therapeutics, Inc., EdiGene Inc., Atara Biotherapeutics, Annexon, Inc., Adicet Therapeutics, Bioray Laboratories, PersonGen BioTherapeutics (Suzhou) Co., Ltd., Juventas Cell Therapy Ltd., Nanjing Bioheng Biotech Co., Ltd., Pregene ShenZhen Biotechnology, Artiva Bio, KeyMed Biosciences, IASO, JW Therapeutics, ROME Therapeutics, Ventus Therapeutics, Allosite Therapeutics, iCell Gene Therapeutics, Caribou Biosciences, LongBio Pharma, Amytrx Therapeutics, Corestem, Eliem Therapeutics, SinoMab Bioscience Ltd., and others. Key Systemic Lupus Erythematosus Pipeline Therapies: Obinutuzumab, Lupuzor (IPP-201101), Dapirolizumab pegol, Cenerimod, BIIB059, Upadacitinib, Deucravacitinib, Atacicept, MIL62, Zanubrutinib, RY_SW01 cell injection|Basic treatment, Ravulizumab, Rapcabtagene autoleucel, PF-06823859, Mesenchymal stem cells (MSC), KP104, JMKX000189, Iptacopan, GLPG3667|Placebo, ESK-001, Elsubrutinib, Efgartigimod alfa, Edecesertib, Ianalumab, Obexelimab (XmAb5871), Daxdilimab (VIB7734), PRV-3279, Nipocalimab, ABBV 599, NKTR-358 (LY3471851), Arscimed, SAR441344, Enpatoran, RSLV-132, Aldesleukin, Daratumumab, Branebrutinib, BMS-986256, ALPN-101, KZR-616, IFNα kinoid, KPG 818, Descartes-08, CFZ533, APL-2, ALXN2050, ADX-097, AZD1656, MB-CART19.1, KYV-101, IMPT-514, GR1603, GC012F Injection, CABA-201, Budoprutug, APG-2575, ICP-022, E6742, ALPN-303, AC0058, Mosunetuzumab, AS-0871, CD19/BCMA CAR T-cells, PF-06835375, EQ001 (Itolizumab), DS-7011a, SM03, CIT-013, SDC-1801, UBP1213, TQB3702, TAK-079, TAK-007, SYNCAR-001, SG301, SC291, RO7507062, RJMty19 (CD19-CAR-DNT cells), Relma-cel, PIT565, Obecabtagene autoleucel (obe-cel), NKX019, LMY-920, KK4277, JWCAR201, Imvotamab, GSK4527363, GSK4347859, FT819, CUG252, CNTY-101, CLN-978, CC-97540, Belantamab, ATHENA CAR-T ATA3219, ANX009, ADI-001, BRL-301, T-cell injection targeting CD19 chimeric antigen receptor, CNCT19, RD06-04, PRG-2311, PRG-1801, AlloNK, CM313, CT103A, JWCAR 029, Research program: endogenous reverse transcriptase inhibitors, VENT 03, ONT01, BCMA-CD19 cCAR T cells, CB-010, LP-005, AMTX 100, CE211AT15, TN-119, SN1011, QX002N, RSLV-145, Recombinant human plasma gelsolin, LN-008, TST 008, IBL 100s, and others. Dive deep into rich insights for new drugs for systemic lupus erythematosus treatment, visit @ Systemic Lupus Erythematosus Drugs Table of Contents For further information on the systemic lupus erythematosus pipeline therapeutics, reach out @ Systemic Lupus Erythematosus Treatment Drugs Related Reports Systemic Lupus Erythematosus Market Systemic Lupus Erythematosus Market Insights, Epidemiology, and Market Forecast – 2034 report deliver an in-depth understanding of the disease, historical and forecasted epidemiology, market share of the individual therapies, and key SLE companies including Biogen, Novartis, MorphoSys, Idorsia Pharmaceuticals, Viatris, RemeGen, UCB Pharma, Genentech, Bristol Myers Squibb, AbbVie, among others. Systemic Lupus Erythematosus Epidemiology Systemic Lupus Erythematosus Epidemiology Forecast – 2032 report delivers an in-depth understanding of the disease, historical, and forecasted SLE epidemiology in the 7MM. Lupus Nephritis Market Lupus Nephritis Market Insights, Epidemiology, and Market Forecast – 2034 report delivers an in-depth understanding of the disease, historical and forecasted epidemiology, as well as the market trends, market drivers, market barriers, and key lupus nephritis companies, including NOVARTIS, MORPHOSYS, ASTRAZENECA, ROCHE, KEZAR LIFE SCIENCES, ALEXION PHARMACEUTICALS, NOVARTIS, CABALETTA BIO, among others. Lupus Nephritis Pipeline Lupus Nephritis Pipeline Insight – 2024 report provides comprehensive insights about the pipeline landscape, pipeline drug profiles, including clinical and non-clinical stage products, and the key lupus nephritis companies, including Inflection Biosciences, Equillium, Roche, Horizon Therapeutics, BeiGene, Janssen Research & Development, ImmPACT Bio, among others. About DelveInsight DelveInsight is a leading Business Consultant and Market Research firm focused exclusively on life sciences. It supports pharma companies by providing comprehensive end-to-end solutions to improve their performance. Get hassle-free access to all the healthcare and pharma market research reports through our subscription-based platform PharmDelve . Contact Us Shruti Thakur [email protected] +14699457679 Logo: SOURCE DelveInsight Business Research, LLP WANT YOUR COMPANY'S NEWS FEATURED ON PRNEWSWIRE.COM? 440k+ Newsrooms & Influencers 9k+ Digital Media Outlets 270k+ Journalists Opted In GET STARTED

Phase 3Phase 2Fast TrackCell Therapy

14 Nov 2024

·www.globenewswire.com

Cullinan Therapeutics Announces Preclinical Data for CLN-978, a CD19-directed T Cell Engager, to be Presented at ACR Convergence 2024

Cullinan will present new in vitro preclinical data that provide further strong rationale for broad clinical development of CLN-978 in autoimmune diseases Cullinan will share details of global Phase 1b study in moderate to severe systemic lupus erythematosus Company to host in-person investor event on Saturday, November 16, 2024, at 8 p.m. ET CAMBRIDGE, Mass., Nov. 14, 2024 (GLOBE NEWSWIRE) -- Cullinan Therapeutics, Inc. (Nasdaq: CGEM), a biopharmaceutical company focused on developing modality-agnostic targeted therapies, will present new preclinical data for CLN-978, its novel CD19xCD3 T cell engager. These data and the study schema for a planned Phase 1b study in patients with moderate to severe systemic lupus erythematosus (SLE) will be presented at the annual meeting of the American College of Rheumatology (ACR), ACR Convergence 2024, being held in Washington, D.C., November 14-19. These data will be shared in a poster presentation on November 16, 2024, 10:30 a.m.-12:30 p.m. Eastern Time (Poster Session A, Poster Number 0003). Cullinan will also have a Booth (#2304) in the Exhibit Hall. CLN-978 Preclinical Data New in vitro preclinical data show CLN-978 induced similar T cell activation, target B cell depletion, and cytokine production in human peripheral blood mononuclear cells (PBMC) derived from patients with SLE (n=12) or rheumatoid arthritis (RA) (n=9) as compared to healthy volunteers (n=11). These studies collectively suggest that the previously observed cytokine window observed in B-NHL model systems, potentially resulting in a broad therapeutic index, is expected to be preserved in SLE and RA patients. "These new preclinical data further demonstrate that CLN-978 is a highly potent T cell engager. With the ability to be subcutaneously delivered, CLN-978 offers off-the-shelf convenience while achieving significant B cell depletion, supporting its potential as a promising new therapeutic option for autoimmune diseases,” said Jeffrey Jones, MD, MBA, Chief Medical Officer of Cullinan Therapeutics. "With regulatory clearances in the U.S. and Australia, we are launching a global Phase 1b clinical trial of CLN-978 in SLE, collaborating closely with investigators and the patient community in our mission to establish new standards of care for patients.” CLN-978 Global Clinical Development Plan In October, Cullinan Therapeutics announced U.S. Food and Drug Administration clearance of an Investigational New Drug Application for its global Phase 1 clinical trial to evaluate CLN-978 for the treatment of patients with moderate to severe SLE to proceed in the United States. Cullinan previously announced Human Research Ethics Committee approval to initiate the global clinical trial in Australia (NCT06613360). The trial will enroll patients with a Systemic Lupus Erythematosus Disease Activity Index (SLEDAI) score of eight or greater and who have had an inadequate response to at least two treatments, including one immunosuppressive or biologic standard-of-care agent. Part A is a dose escalation phase using a modified single-ascending dose design to determine a recommended target dose for further development. Part A is planned to explore target dose levels of 10, 20, 30, and 45 micrograms (mcg) in a stepwise ascending fashion, enrolling at least three patients in each cohort. Dose levels above 10 mcg will incorporate a step-up dose of 10 mcg administered on Day 1 followed by administration of the higher cohort target dose on Day 8. Part B is a dose expansion phase which will explore two or more recommended dose schedules informed by data from Part A of the study. The primary objective of the study is to evaluate the safety of CLN-978 for treatment of active moderate to severe SLE. Secondary objectives include pharmacokinetics, B cell kinetics, immunogenicity, and clinical activity. Initial clinical data are expected in the fourth quarter of 2025. Live Investor Event Cullinan will host an in-person event for analysts and institutional investors on Saturday, November 16, 2024, at 8 p.m. ET, during which members of Cullinan’s management team will be available for discussion. The event will also feature a clinician and thought leader discussion, followed by a question-and-answer session. Investors and analysts are invited to register to attend in person by emailing Nick Smith, Director of Investor Relations (nsmith@cullinantx.com). About CLN-978 CLN-978 is a novel, highly potent CD19xCD3 bispecific T cell engager. CLN-978 triggers redirected lysis of CD19-expressing target cells in vitro and in vivo. CLN-978 is engineered to achieve very high affinity binding to CD19 to efficiently target B cells, including those with very low CD19 levels. Small in molecular size (65 kDa), CLN-978 contains two single-chain variable fragments, one binding with very high affinity to the CD19 target and the other binding to CD3 on T cells, and a single-domain antibody binding to human serum albumin to extend serum half-life. CLN-978 was developed by an internal Cullinan team and is a wholly owned asset. CLN-978 has the potential to offer a convenient, off-the-shelf, subcutaneously delivered therapeutic option for patients with autoimmune diseases such as SLE and rheumatoid arthritis. About Systemic Lupus Erythematosus Systemic lupus erythematosus (SLE) is a chronic, heterogeneous autoimmune disease in which the immune system attacks a patient’s own tissues. The most common manifestations of SLE include skin rashes, arthritis, swelling in the feet, and around the eyes, extreme fatigue, and low fevers. Lupus nephritis (LN) is a kidney disease and the most common severe manifestation of SLE. Approximately 40% of patients with SLE develop LN, which has a 10-year 30% mortality rate.1,2 The prevalence of SLE in the US is estimated at 160,000 to 320,000 cases and SLE affects approximately 3.4 million individuals globally.3,4 SLE is more prevalent in women and people of color. It occurs most often in people between the ages of 15 and 45 years, but can occur in childhood or later in life as well. Currently available treatments do not routinely induce treatment-free remission, and most patients require lifelong immune suppression that treats symptoms without modifying the course of disease. About Cullinan Therapeutics Cullinan Therapeutics, Inc. (Nasdaq: CGEM) is a biopharmaceutical company dedicated to creating new standards of care for patients. Cullinan has strategically built a diversified portfolio of clinical-stage assets that inhibit key drivers of disease or harness the immune system to eliminate diseased cells in both autoimmune diseases and cancer. Cullinan’s portfolio encompasses a wide range of modalities, each with the potential to be best and/or first in class. Anchored in a deep understanding of oncology, immunology, and translational medicine, we create differentiated ideas, identify the most appropriate targets, and select the optimal modality to develop transformative therapeutics across a wide variety of autoimmune and cancer indications. We push conventional boundaries from candidate selection to differentiated therapeutic, applying rigorous go/no go criteria at each stage of development to fast-track only the most promising molecules to the clinic and, ultimately, commercialization. With deep scientific expertise, our teams exercise creativity and urgency to deliver on our promise to bring new therapeutic solutions to patients. Learn more about Cullinan at https://cullinantherapeutics.com/, and follow us on LinkedIn and X. Forward Looking Statements This press release contains forward-looking statements within the meaning of The Private Securities Litigation Reform Act of 1995. These forward-looking statements include, but are not limited to, express or implied statements regarding the company’s beliefs and expectations regarding: our preclinical and clinical developments plans and timelines for CLN-978, the clinical and therapeutic potential of CLN-978, our plans regarding future data presentations, and other statements that are not historical facts. The words “believe,” “continue,” “could,” “estimate,” “expect,” “intends,” “may,” “plan,” “potential,” “project,” “pursue,” “will,” and similar expressions are intended to identify forward-looking statements, although not all forward-looking statements contain these identifying words. Any forward-looking statements in this press release are based on management's current expectations and beliefs of future events and are subject to known and unknown risks and uncertainties that may cause our actual results, performance or achievements to be materially different from any future results, performance or achievements expressed or implied by the forward-looking statements. These risks include, but are not limited to, the following: uncertainty regarding the timing and results of regulatory submissions; the risk that any INDs or other global regulatory submissions we may file with the United States Food and Drug Administration or other global regulatory agencies are not cleared on our expected timelines, or at all; the success of our clinical trials and preclinical studies; the risks related to our ability to protect and maintain our intellectual property position; the risks related to manufacturing, supply, and distribution of our product candidates; the risk that any one or more of our product candidates, including those that are co-developed, will not be successfully developed and commercialized; the risk that the results of preclinical studies or clinical studies will not be predictive of future results in connection with future studies; and the success of any collaboration, partnership, license or similar agreements. These and other important risks and uncertainties discussed in our filings with the Securities and Exchange Commission, including under the caption “Risk Factors” in our most recent Annual Report on Form 10-K and subsequent filings with the SEC, could cause actual results to differ materially from those indicated by the forward-looking statements made in this press release. While we may elect to update such forward-looking statements at some point in the future, we disclaim any obligation to do so, even if subsequent events cause our views to change, except to the extent required by law. These forward-looking statements should not be relied upon as representing our views as of any date subsequent to the date of this press release. Moreover, except as required by law, neither the company nor any other person assumes responsibility for the accuracy and completeness of the forward-looking statements included in this press release. Any forward-looking statement included in this press release speaks only as of the date on which it was made. Contacts:  Investors  Nick Smith  +1 401.241.3516  nsmith@cullinantx.com Media  Rose Weldon   +1 215.801.7644   rweldon@cullinantx.com Mahajan A et al. Lupus. 2020Hocaoglu M et al. Arthritis Rheumatol. 2023Tian J et al. Ann Rheum Dis. 2022Dall'Era M. In: Imboden J et al. CURRENT Diagnosis & Treatment: Rheumatology. 3rd ed. 2013

Phase 1INDCell Therapy

11 Nov 2024

·www.biopharmadive.com

Fueling accelerated drug development in autoimmune diseases with a modality-agnostic approach

Recent extensive investment in oncologyparticularly immuno-oncologyhas driven scientific and medical breakthroughs delivering life-changing outcomes for many patients living with cancer.Scientific advances in understanding the immune system are driving renewed interest in autoimmune diseases, with insights now being applied to autoimmune disorders like systemic lupus erythematosus (SLE) and rheumatoid arthritis, where current therapies routinely fail to achieve treatment-free remission.1,2 Subsequently, many patients with these chronic diseases require lifelong immune suppression for symptom management, often without achieving long-term disease control.3,4The biotech industry, pursuing ideas holding the greatest potential impact on patient lives, is positioned to act quickly on emerging scienceaccelerating development of new standards of care. Companies like Cullinan Therapeutics are helping lead this groundswell in autoimmune diseases with a unique, modality-agnostic approach and collaboration with external experts, reflective of its innovation-without-borders philosophyseeking to bring forward only the most promising therapies. Strategy grounded in patient impactHowever, not all biotechs have the resources, teams, or agility to make quick, strategic decisions in an ever-adapting scientific landscape. For those that can, success hinges on addressing unmet needs as quickly as possible in diseases with significant potential for improved patient outcomes. This shift is already happening in autoimmune diseases. Strategies centered on B cell depletion have long been validated in both oncology and autoimmune disorders, given B cells role in immune system dysregulation.5,6 While TCE therapies have achieved lasting remissions in B cell malignancies, only recently has research suggested their disease-modifying potential in autoimmune diseases.7.8 This watershed moment renewed energy and investment in immunology. While many companies focused on advancing CAR T cell therapies, teams at Cullinan identified the broader utility of a different modalitytheir novel, highly potent CD19-specific TCE. With off-the-shelf convenience and subcutaneous delivery allowing flexible, repeat dosing (as needed), CLN-978 emerged as a differentiated, patient-friendly option being studied in clinical trials.9As new research surfaced, our scientific teams quickly evaluated whether we could make a meaningful difference for patients in this growing area of unmet need, said Jeff Jones, MD, MBA, Chief Medical Officer, Cullinan Therapeutics. Our modality-agnostic model gives us the agility to recalibrate based on scientific breakthroughs and ensure were focusing our pipeline on areas with the greatest need and potential for impact.Just six months after its strategic expansion into autoimmune diseases, Cullinan progressed its global development plan for CLN-978 to be studied in multiple clinical trials.10,11 In October, the U.S. Food and Drug Administration cleared Cullinans Investigational New Drug application to proceed with its global Phase 1 clinical trial of CLN-978 in moderate to severe SLE, representing the first development-stage CD19-specific TCE to receive U.S. clearance in autoimmune disease.12 This followed approval from a Human Research Ethics Committee in Australia in Septemberwhich marked the launch of the global trial.13 A second Phase 1 study in refractory rheumatoid arthritis is in development.Innovation without borders to progress new opportunitiesAdvancing new ideas offering the greatest potential patient benefit is only possible through cross-industry collaboration, including with institutional and advocacy partners worldwide. Lupus is a complex and heterogeneous disease. The disease can impact everyone differently and symptoms can change over time. Many patients try existing therapies, sometimes in combination, to achieve short periods of remission. Treatment solutions capable of delivering long-term remission would be very impactful, said Stacie Bell, Executive Vice President and lead of Lupus Therapeutics, the clinical affiliate of the Lupus Research Alliance. Success in treatment development requires collaboration with industry, especially in early clinical research, which drives life-changing innovations and potential curative therapies that those living with lupus are waiting for.Dr. Jones, a former academic physician, emphasizes that the best results come from engaging experts passionate about advancing science and improving lives through development of groundbreaking, investigational assets. Cullinans global clinical strategy reflects its innovation-without-borders ethos, enabling teams to secure alignment, validation, and support from leading institutions and patient advocacy and research groups as they work to progress CLN-978.The potential of anti-CD19 T cell engagers, including CLN-978, is incredibly excitingits an exhilarating time as a rheumatologist, said Anca Askanase, MD, MPH, Founder and Director of Columbia University's Lupus Center and the Director of Rheumatology Clinical Trials. These industry collaborations are likely to bring forward treatments that make a real difference for patients with autoimmune diseases.This moment presents an exciting convergencedecades of scientific progress intersecting with established clinical experience in practice-changing modalities. Companies with agile, multidisciplinary strategies that embrace emerging science are well-positioned to deliver transformational medicines in autoimmune diseases.References:1. Lupus Foundation of America. Lupus remission. 20222. Arthritis Foundation. Your RA is in Remission! Now What?3. Cleveland Clinic. Autoimmune Diseases. 20214. Lopez-Millan B et al. Nature. 20175. Zhang Z et al. Front Immunol. 20236. Mackensen A et al. Nat Med. 20227. Michaelson J & Baeuerle P J. Exp. Med. 20248. Mller F et al. N Engl J Med. 20249. Cullinan Therapeutics. Targeting CD19 With T Cell Engagers. 202410. Cullinan Therapeutics. Cullinan Therapeutics Announces Strategic Expansion into Autoimmune Diseases. Press release. 202411. Cullinan Therapeutics. Cullinan Therapeutics Announces Submission of Investigational New Drug Application to U.S. Food and Drug Administration for CLN-978 to Treat Systemic Lupus Erythematosus. Press Release. 202412. Cullinan Therapeutics. Cullinan Therapeutics Receives U.S. FDA Clearance of Investigational New Drug Application for CLN-978 Administered Subcutaneously in Patients with Moderate to Severe Systemic Lupus Erythematosus. Press Release. 202413. Cullinan Therapeutics. Cullinan Therapeutics Receives Approval to Initiate its Global Phase 1 Clinical Trial of CLN-978 for the Treatment of Systemic Lupus Erythematosus. Press Release. 2024 '

ImmunotherapyINDPhase 1

100 Deals associated with CLN-978

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Indication	Highest Phase	Country/Location	Organization	Date
Systemic Lupus Erythematosus	Phase 1	US	Cullinan Oncology LLC	01 Dec 2024
B-cell lymphoma recurrent	Phase 1	US	Cullinan Oncology LLC	31 May 2023
Refractory Mature B-Cell Non-Hodgkin Lymphoma	Phase 1	US	Cullinan Oncology LLC	24 Jan 2023
Rheumatoid Arthritis	Preclinical	US	Cullinan Oncology LLC	06 Sep 2024
Precursor B-Cell Lymphoblastic Leukemia-Lymphoma	Preclinical	US	Cullinan Oncology LLC	-

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