1. Complement factor H targeting antibody GT103 in refractory non-small cell lung cancer: a phase 1b dose escalation trial.
- Author
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Clarke JM, Simon GR, Mamdani H, Gu L, Herndon JE 2nd, Stinchcombe TE, Ready N, Crawford J, Sonpavde G, Balevic S, Nixon AB, Campa M, Gottlin EB, Li H, Saxena R, He YW, Antonia S, and Patz EF Jr
- Subjects
- Humans, Male, Female, Middle Aged, Aged, Dose-Response Relationship, Drug, Adult, Aged, 80 and over, Antibodies, Monoclonal administration & dosage, Antibodies, Monoclonal pharmacokinetics, Antibodies, Monoclonal adverse effects, Antibodies, Monoclonal therapeutic use, Antibodies, Monoclonal, Humanized administration & dosage, Antibodies, Monoclonal, Humanized pharmacokinetics, Antibodies, Monoclonal, Humanized adverse effects, Antibodies, Monoclonal, Humanized therapeutic use, Carcinoma, Non-Small-Cell Lung drug therapy, Carcinoma, Non-Small-Cell Lung immunology, Lung Neoplasms drug therapy, Lung Neoplasms immunology, Maximum Tolerated Dose, Complement Factor H immunology
- Abstract
GT103 is a first-in-class, fully human, IgG3 monoclonal antibody targeting complement factor H that kills tumor cells and promotes anti-cancer immunity in preclinical models. We conducted a first-in-human phase 1b study dose escalation trial of GT103 in refractory non-small cell lung cancer to assess the safety of GT103 (NCT04314089). Dose escalation was performed using a "3 + 3" schema with primary objectives of determining safety, tolerability, PK profile and maximum tolerated dose (MTD) of GT103. Secondary objectives included describing objective response rate, progression-free survival and overall survival. Dose escalation cohorts included GT103 given intravenously at 0.3, 1, 3, 10, and 15 mg/kg every 3 weeks, and 10 mg/kg every 2 weeks. Thirty one patients were enrolled across 3 institutions. Two dose-limiting adverse events were reported: grade 3 acute kidney injury (0.3 mg/kg) and grade 2 colitis (1 mg/kg). No dose-limiting toxicities were noted at the highest dose levels and the MTD was not reached. No objective responses were seen. Stable disease occurred in 9 patients (29%) and the median overall survival was 25.7 weeks (95% confidence interval [CI], 19.1-30.6). Pharmacokinetic analysis confirmed an estimated half life of 6.5 days. The recommended phase 2 dose of GT103 was 10 mg/kg every 3 weeks, however further dose optimization is needed given the absence of an MTD. The study achieved its primary objective of demonstrating safety and tolerability of GT103 in refractory NSCLC., Competing Interests: Competing interests: This research was supported by Grid Therapeutics. Drs. Patz, Campa, and Gottlin have affiliation with both Grid Therapeutics and Duke University. JMC reports trial funding from Bristol-Myers Squibb, Genentech, Spectrum, Adaptimmune, AbbVie, Moderna, GlaxoSmithKline, Array, AstraZeneca, Grid Therapeutics, Abel Zeta, Pfizer; advisory/consulting from AstraZeneca, Merck, Pfizer, Spectrum, Genentech, Novartis, Turning Point, G1 Therapeutics, Vivacitas, Omega, Amgen, Corbus, Sanofi; speaking and travel from Merck and Amgen; DSMB from BioThera and G1 Therapeutics. GS reports speaking for Astra-Zeneca, consulting for Daiichi Sankyo, board member for Florida chapter of ASCO, and stock Options and consulting compensation for Onc.AI. HM reports advisory board for AstraZeneca, Genentech, and Daiichi Sankyo; and research funding from AstraZeneca. TS reports clinical trial funding from AstraZeneca, Seagen, Mirati Therapeutics, Genentech/Roche, Nuvalent, Inc.; consulting from Takeda, G1 Therapeutics, Spectrum Pharmaceuticals, Gilead Sciences, AstraZeneca, Coherus Biosciences, Blueprint Medicines, Boehringer Ingelheim, Pfizer, Abbvie; travel funding from Pfizer; DSMB participation from Genentech. NR reports advisory compensation from BMS, Merck, Jazz, Genentech, Daiichi, Regeneron, ABBVIE, research funding Merck, Regeneron, and speaking from Jazz. JC reports Scientific Advisor from Actimed, Enzychem, Gen Sci, Pfizer, Tensegrity; DSMB Member of BioAtla, G1 Therapeutics; PI/Institutional Research Funding for AstraZeneca, Helsinn, Pfizer, NCI/NCTN; Publications Committee of Amgen, Frensenius-Kabi, G1, Pfizer. GS reports advisory board from EMD Serono, BMS, Merck, Seattle Genetics, Astellas, Janssen, Bicycle Therapeutics, Pfizer, Gilead, Scholar Rock, Eli Lilly, Loxo Oncology, Vial, Aktis, Daiichi-Sankyo; Consultant/Scientific Advisory Board (SAB)/trial steering committee: Syapse, Merck, Servier, Syncorp, Ellipses; Research Support to institution from EMD Serono, Jazz Therapeutics, Bayer, Sumitomo Pharma, Blue Earth Diagnostics; Speaker from Seagen, Gilead, Natera, Exelixis, Janssen, Astellas, Bayer, Aveo, Pfizer, Merck; Data safety monitoring committee (honorarium) from Mereo; Employment: Spouse employed by Myriad, Exact Sciences; and Travel: BMS, Astellas. SB receives support from the National Institutes of Health, the Childhood Arthritis and Rheumatology Research Alliance (CARRA), serves on an NIH DSMB, and consults for UCB (Morrisville, NC, USA), CARRA, and Rutgers University. Stephen Balevic is a member of the American College of Rheumatology, the Childhood Arthritis and Rheumatology Research Alliance (CARRA), Alpha Omega Alpha, the American Society of Clinical Investigators, and the Society for Pediatric Research, and served as the Assistant Scientific Director for CARRAAN reports funding from Genentech, Genmab, MedImmune/AstraZeneca, Seattle Genetics; consulting from Sanofi, Promega; SAB from Leap Therapeutics; NCI Chair, Core Correlatives Sciences Committee (NCTN-CCSC); and patents of No 925592 and No. 62/337,633. MC is a founder of Grid Therapeutics, LLC and is on the advisory board. EBG is a founder of Grid Therapeutics, LLC. SA reports being member of scientific advisory boards for Cellepus Therapeutics (and Co-founder), Leap Therapeutics, Guardian Bio, Immutep, Shoreline Therapeutics, Tubulis, Xilis, Glympse Bio, Achilles Therapeutics, Memgen, RAPT Biotherapeutics. EFP is a founder, CEO and on the BOD of Grid Therapeutics, LLC. All other authors report no competing interests., (© 2024. The Author(s).)
- Published
- 2025
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