Age does not influence efficacy of ramucirumab in advanced gastric cancer: Subgroup analyses of REGARD and RAINBOW

Kei Muro, Jae Yong Cho, Gyorgy Bodoky, Chanchal Goswami, Yee Chao, Lucas V. dos Santos, Yasuhiro Shimada, Eldar Topuzov, Eric Van Cutsem, Josep Tabernero, John Zalcberg, Ian Chau, Stefano Cascinu, Rebecca Cheng, Yanzhi Hsu, Michael Emig, Mauro Orlando, Charles Fuchs

Research output: Contribution to journalArticleResearchpeer-review

6 Citations (Scopus)

Abstract

© 2017 Journal of Gastroenterology and Hepatology Foundation and John Wiley & Sons Australia, Ltd Background and Aim: REGARD and RAINBOW were global, phase 3, randomized, double-blind trials of second-line ramucirumab for metastatic gastric or gastroesophageal junction adenocarcinoma. Exploratory subgroup analyses were described to assess the efficacy and safety of ramucirumab in REGARD and RAINBOW in young (≤ 45 and < 65 years) and elderly (≥ 65, ≥ 70, and ≥ 75 years) patients. Methods: Patients were randomized 2:1 to receive ramucirumab plus best supportive care or placebo plus best supportive care (REGARD) or 1:1 to ramucirumab plus paclitaxel or placebo plus paclitaxel (RAINBOW). Subpopulation Treatment Effect Pattern Plots assessed efficacy and adverse events by age groups for ramucirumab versus placebo. Results: The hazard ratios (HRs) for overall survival favored treatment with ramucirumab: REGARD ≤ 45 years (HR: 0.59, 95% confidence interval: 0.27–1.26), < 65 years (0.80, 0.59–1.10), ≥ 65 years (0.72, 0.48–1.08), ≥ 70 years (0.73, 0.44–1.23), and ≥ 75 years (0.59, 0.25–1.37); and RAINBOW ≤ 45 years (0.56, 0.33–0.93), < 65 years (0.78, 0.63–0.97), ≥ 65 years (0.88, 0.66–1.18), and ≥ 70 years (0.88, 0.60–1.28). The exception was elderly patients aged ≥ 75 years in RAINBOW (0.97, 0.47–2.01); however, patient numbers were low in this subgroup (n = 36). Similar findings were observed for progression-free survival, for which HRs numerically favored ramucirumab-treated patients. Adverse events (including grade ≥ 3) were not associated with age. Conclusions: In comparison with placebo, ramucirumab conferred improvements in efficacy across age groups with a tolerable safety profile. Despite some limitations, these exploratory analyses support the use of ramucirumab in advanced gastric cancer, irrespective of age.
Original languageEnglish
Pages (from-to)814-824
JournalJournal of Gastroenterology and Hepatology (Australia)
Volume33
Issue number4
DOIs
Publication statusPublished - 1 Apr 2018

Keywords

  • elderly
  • gastroesophageal neoplasms
  • ramucirumab
  • vascular endothelial growth factor receptor-2
  • young patients

Fingerprint Dive into the research topics of 'Age does not influence efficacy of ramucirumab in advanced gastric cancer: Subgroup analyses of REGARD and RAINBOW'. Together they form a unique fingerprint.

Cite this