1. Five-year survival in patients with extensive-stage small cell lung cancer treated with atezolizumab in the Phase III IMpower133 study and the Phase III IMbrella A extension study.
- Author
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Reck M, Dziadziuszko R, Sugawara S, Kao S, Hochmair M, Huemer F, de Castro G Jr, Havel L, Bernabé Caro R, Losonczy G, Lee JS, Kowalski DM, Andric Z, Califano R, Veatch A, Gerstner G, Batus M, Morris S, Kaul M, Cuchelkar V, Li H, Danner BJ, Nabet BY, and Liu SV
- Subjects
- Humans, Male, Female, Middle Aged, Aged, Neoplasm Staging, Etoposide administration & dosage, Etoposide therapeutic use, Follow-Up Studies, Survival Rate, Adult, Aged, 80 and over, Antibodies, Monoclonal, Humanized therapeutic use, Antibodies, Monoclonal, Humanized administration & dosage, Antibodies, Monoclonal, Humanized adverse effects, Small Cell Lung Carcinoma drug therapy, Small Cell Lung Carcinoma mortality, Small Cell Lung Carcinoma pathology, Lung Neoplasms drug therapy, Lung Neoplasms mortality, Lung Neoplasms pathology, Antineoplastic Combined Chemotherapy Protocols therapeutic use, Antineoplastic Combined Chemotherapy Protocols adverse effects, Carboplatin administration & dosage, Carboplatin therapeutic use
- Abstract
Objectives: IMbrella A is a Phase III extension study that allowed rollover from Roche/Genentech-sponsored atezolizumab trials, including IMpower133, a Phase I/III trial of first-line atezolizumab or placebo plus carboplatin/etoposide in extensive-stage small cell lung cancer. We report outcomes from an exploratory analysis of IMpower133 with extended time-to-event data for patients who rolled over to IMbrella A., Materials and Methods: IMpower133 patients could roll over to IMbrella A to receive atezolizumab 1200 mg intravenously every three weeks if they continued to receive atezolizumab at IMpower133 closure or were in survival follow-up after atezolizumab discontinuation. Overall survival and safety were assessed; only serious adverse events and AEs of special interest were collected in IMbrella A., Results: Eighteen of 26 eligible patients rolled over to IMbrella A. At clinical cutoff (March 16, 2023), median follow-up in the atezolizumab plus carboplatin/etoposide arm (IMpower133 and IMbrella A) was 59.4 months. The three-, four-, and five-year overall survival (95 % CI) estimates were 16 % (11 %-21 %), 13 % (8 %-18 %), and 12 % (7 %-17 %), respectively. In IMbrella A, serious adverse events occurred in three patients (16.7 %), and one adverse event of special interest was reported (grade two hypothyroidism)., Conclusion: This long-term analysis of patients from IMbrella A previously enrolled in IMpower133 provides the first report of five-year overall survival outcomes in patients with extensive-stage small cell lung cancer treated with first-line cancer immunotherapy and chemotherapy. While limited by small patient numbers and lack of long-term data for the IMpower133 control arm, exploratory overall survival analyses in patients treated with atezolizumab plus carboplatin/etoposide compared favorably with historical data with chemotherapy alone. NCT03148418., Competing Interests: Declaration of competing interest The authors declare the following financial interests/personal relationships which may be considered as potential competing interests: All authors report editorial support funded by the Sponsor. Martin Reck reports receiving consulting fees, honoraria and travel support from Amgen, AstraZeneca, Beigene, Boehringer Ingelheim, Bristol Myers Squibb, Daiichi Sankyo, GSK, Mirati, Merck, MSD, Lily, Novartis, Pfizer, Sanofi, Roche, and Regeneron; and participation on a data safety monitoring or advisory board for Sanofi and Daiichi Sankyo. Rafal Dziadziuszko reports receiving honoraria from Roche, AstraZeneca, Amgen, Novartis, MSD, Bristol Myers Squibb, Takeda, and Pfizer; and materials from Novartis. Shunichi Sugawara reports receiving grants (to institution) from AstraZeneca, Chugai Pharma, MSD, Bristol Myers Squibb, and Ono Pharmaceutical; and honoraria from AstraZeneca, Chugai Pharma, MSD, Bristol Myers Squibb, and Ono Pharmaceutical. Steven Kao reports receiving grants (to institution) from AstraZeneca; honoraria from AstaZeneca, Pfizer, MSD, Bristol Myers Squibb, Roche, Amgen, Beigene, and Boehringer Ingelheim; and travel support from MSD. Maximilian Hochmair reports receiving honoraria from MSD, Roche, Lilly, AstraZeneca, Takeda, Bristol Myers Squibb, and Amgen. Florian Huemer declares no conflict of interest. Gilberto de Castro, Jr reports receiving consulting fees from Daiichi-Sankyo; honoraria from AstraZeneca, Bristol Myers Squibb, Jannsen, Lilly, MSD, Novartis, Roche, Amgen, and Daiichi-Sankyo; travel support from Roche, Amgen, Daiichi-Sankyo, MSD, AstraZeneca, and Bristol Myers Squibb; and participation on a data safety monitoring or advisory board for GlaxoSmithKline, AstraZeneca, MSD, and Novartis. Libor Havel declares no conflict of interest. Reyes Bernabé Caro reports receiving an investigational grant from Roche; honoraria from Roche, Bristol Myers Squibb, Pfizer, MSD, Amgen, Takeda, and AstraZeneca; and participation in a data safety monitoring or advisory board for Takeda, Roche, Bristol Myers Squibb, and AstraZeneca. György Losonczy and Jong-Seok Lee declare no conflict of interest. Dariusz M. Kowalski reports participation on an advisory board and consultancy for Roche, Boehringer Ingelheim, Novartis, Bristol Myers Squibb, MSD, Sanofi-Aventis, Takeda, Pfizer, and Johnson & Johnson. Zoran Andric declares no conflict of interest. Raffaele Califano reports receiving grants (to institution) from Roche and MSD; consulting fees from Roche, MSD, Bristol Myers Squibb, and AstraZeneca; and honoraria from Roche, MSD, and AstraZeneca; membership in the EORTC lung cancer group and ESMO educational publication working group; and stock or stock options in The Christie Private Care and Supportive Care UK. Andrea Veatch, Gregory Gerstner, and Marta Batus declare no conflicts of interest. Stefanie Morris reports employment with and stock or stock options in Roche. Monika Kaul, Vaikunth Cuchelkar, Huafei Li, Bradford J. Danner, and Barzin Y. Nabet report employment with Roche. Stephen V. Liu reports receiving grants from AbbVie, Alkermes, Elevation Oncology, Ellipses, Genentech, Gilead, Merck, Merus, Nuvalent, RAPT, and Turning Point Therapeutics; and consulting fees from AbbVie, Amgen, AstraZeneca, Boehringer Ingelheim, Bristol Myers Squibb, Catalyst, Daiichi Sankyo, Eisai, Elevation Oncology, Genentech/Roche, Gilead, Guardant Health, Janssen, Jazz Pharmaceuticals, Merck, Merus, Mirati, Novartis, Pfizer, Regeneron, Sanofi, Takeda, and Turning Point Therapeutics; and participation on a data safety monitoring for Candel Therapeutics., (Copyright © 2024. Published by Elsevier B.V.)
- Published
- 2024
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