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Randomized Controlled Trial
. 2022 Apr;7(2):100408.
doi: 10.1016/j.esmoop.2022.100408. Epub 2022 Mar 10.

Durvalumab, with or without tremelimumab, plus platinum-etoposide in first-line treatment of extensive-stage small-cell lung cancer: 3-year overall survival update from CASPIAN

L Paz-Ares  1 , Y Chen  2 , N Reinmuth  3 , K Hotta  4 , D Trukhin  5 , G Statsenko  6 , M J Hochmair  7 , M Özgüroğlu  8 , J H Ji  9 , M C Garassino  10 , O Voitko  11 , A Poltoratskiy  12 , E Musso  13 , L Havel  14 , I Bondarenko  15 , G Losonczy  16 , N Conev  17 , H Mann  18 , T B Dalvi  19 , H Jiang  19 , J W Goldman  20
Affiliations
Randomized Controlled Trial

Durvalumab, with or without tremelimumab, plus platinum-etoposide in first-line treatment of extensive-stage small-cell lung cancer: 3-year overall survival update from CASPIAN

L Paz-Ares et al. ESMO Open. 2022 Apr.

Abstract

Background: In the phase III CASPIAN study, first-line durvalumab in combination with etoposide plus either cisplatin or carboplatin (EP) significantly improved overall survival (OS) versus EP alone in extensive-stage small-cell lung cancer (ES-SCLC). Durvalumab plus tremelimumab plus EP numerically improved OS versus EP, but did not reach statistical significance. Here we report updated OS in censored patients after median follow-up of >3 years.

Patients and methods: 805 patients with treatment-naïve ES-SCLC were randomized 1 : 1 : 1 to durvalumab plus EP, durvalumab plus tremelimumab plus EP, or EP. The two primary endpoints were OS for durvalumab plus EP versus EP and for durvalumab plus tremelimumab plus EP versus EP.

Results: As of 22 March 2021 (median follow-up 39.4 months, 86% maturity), durvalumab plus EP continued to demonstrate improved OS versus EP: hazard ratio (HR) 0.71 [95% confidence interval (CI) 0.60-0.86; nominal P = 0.0003]; median OS was 12.9 versus 10.5 months, and 36-month OS rate was 17.6% versus 5.8%. Durvalumab plus tremelimumab plus EP continued to numerically improve OS versus EP: HR 0.81 (95% CI: 0.67-0.97; nominal P = 0.0200); median OS was 10.4 months, and 36-month OS rate was 15.3%. Twenty-seven and nineteen patients in the durvalumab plus EP and durvalumab plus tremelimumab plus EP arms, respectively, remained on durvalumab treatment at data cut-off.

Conclusions: Three times more patients were estimated to be alive at 3 years when treated with durvalumab plus EP versus EP, with the majority still receiving durvalumab at data cut-off, further establishing durvalumab plus EP as first-line standard of care for ES-SCLC.

Keywords: CASPIAN; durvalumab; extensive-stage SCLC; overall survival; tremelimumab.

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Conflict of interest statement

Disclosure LPA reports receiving grants from AstraZeneca, Bristol-Myers Squibb, MSD, and Pfizer; consulting fees from Amgen, AstraZeneca, Bayer, Blueprint Medicines, Bristol-Myers Squibb, Ipsen, Lilly, Merck, Mirati, MSD, Novartis, Pfizer, PharmaMar, Roche, Sanofi, and Servier; and honoraria from AstraZeneca, Janssen, Merck, Mirati, and Sanofi, and reports a leadership role with Genomica and Altum Sequencing, all outside the submitted work. YC reports receiving honoraria from Amgen, AstraZeneca, Bristol-Myers Squibb, Guardant Health, Jazz Pharmaceutical, Merck, Pfizer, and Takeda; and a research contract and support for meeting attendance/travel from Ipsen, all outside the submitted work. NR reports receiving honoraria from Amgen, AstraZeneca, Boehringer Ingelheim, Bristol-Myers Squibb, Daiichi Sankyo, Hoffmann-La Roche, Lilly, Merck, MSD, Pfizer, and Takeda; and consulting fees from Amgen, AstraZeneca, Boehringer Ingelheim, Bristol-Myers Squibb, Daiichi Sankyo, Hoffmann-La Roche, Merck, MSD, Pfizer, and Takeda, all outside the submitted work. KH reports receiving grants and personal fees from AstraZeneca during the conduct of the study; grants from Bristol-Myers Squibb, Chugai, Lilly, and MSD outside the submitted work; and honoraria from AstraZeneca, Boehringer Ingelheim, Bristol-Myers Squibb, Chugai, Lilly, MSD, Nippon Kayaku, Ono, Pfizer, Taiho, and Takeda outside the submitted work. MJH reports receiving speakers’ honoraria from AstraZeneca, Boehringer Ingelheim, MSD, Pfizer, Roche, and Takeda outside the submitted work. MCG reports receiving grants from AstraZeneca and Merck, and personal fees from AstraZeneca, Boehringer Ingelheim, Bristol-Myers Squibb, Celgene, Eli Lilly, GlaxoSmithKline, Merck, Novartis, Pfizer, Roche, and Takeda, all outside the submitted work. EM reports receiving grants from AstraZeneca during the conduct of the study and grants from Roche outside the submitted work. HM and TD report full-time employment and stock ownership with AstraZeneca. HJ reports full-time employment and stock ownership with AstraZeneca, and a patent pending for the CASPIAN study trial design. JWG reports receiving research grants from AbbVie, AstraZeneca, Bristol-Myers Squibb, Genentech, and Merck; consulting fees from AbbVie, AstraZeneca, Bristol-Myers Squibb, and Genentech; and support for travel from AstraZeneca all outside the submitted work. All other authors have declared no conflicts of interest. Data sharing Data underlying the findings described in this manuscript may be obtained in accordance with AstraZeneca’s data-sharing policy described at https://astrazenecagrouptrials.pharmacm.com/ST/Submission/Disclosure.

Figures

Figure 1
Figure 1
Overall survival in the intention-to-treat population: durvalumab plus EP versus EP. (A) Kaplan–Meier graph of overall survival. (B) Subgroup analysis of overall survival. Size of circle is proportional to the number of events across both treatment arms. Smokers are defined as patients who currently use or have previously used cigarettes, cigarillos, cigars, pipe tobacco, or tobacco for smoking; non-smokers are defined as patients who have never used these products. AJCC, American Joint Committee on Cancer; CI, confidence interval; CNS, central nervous system; EP, etoposide plus either cisplatin or carboplatin; HR, hazard ratio; OS, overall survival; WHO, World Health Organization.
Figure 2
Figure 2
Overall survival in the intention-to-treat population: durvalumab plus tremelimumab plus EP versus EP. (A) Kaplan–Meier graph of overall survival. (B) Subgroup analysis of overall survival. Size of circle is proportional to the number of events across both treatment arms. Smokers are defined as patients who currently use or have previously used cigarettes, cigarillos, cigars, pipe tobacco, or tobacco for smoking; non-smokers are defined as patients who have never used these products. AJCC, American Joint Committee on Cancer; CI, confidence interval; CNS, central nervous system; EP, etoposide plus either cisplatin or carboplatin; HR, hazard ratio; OS, overall survival; WHO, World Health Organization.
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References

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