JTO Clinical and Research Reports (Oct 2022)

Final Overall Survival, Safety, and Quality of Life Results From a Phase 2 Study of Crizotinib in East Asian Patients With ROS1-Positive Advanced NSCLC

  • Yi-Long Wu, MD,
  • Shun Lu, MD, PhD,
  • James Chih-Hsin Yang, MD, PhD,
  • Jianying Zhou, MD,
  • Takashi Seto, MD,
  • Myung-Ju Ahn, MD, PhD,
  • Wu-Chou Su, MD,
  • Noboru Yamamoto, MD, PhD,
  • Dong-Wan Kim, MD, PhD,
  • Jolanda Paolini, MSc,
  • Tiziana Usari, BSc,
  • Laura Iadeluca, PhD,
  • Keith D. Wilner, PhD,
  • Koichi Goto, MD, PhD

Journal volume & issue
Vol. 3, no. 10
p. 100406

Abstract

Read online

Introduction: Crizotinib provided meaningful clinical benefit in the initial analysis of a phase 2 study in East Asian patients with advanced ROS1-positive NSCLC (NCT01945021). Nevertheless, overall survival (OS) data were immature. Here, we present the final OS, quality of life (QoL), and safety data after an additional 3 years of follow-up. Methods: In this phase 2, open-label, single-arm trial, East Asian patients with ROS1-positive advanced NSCLC who had received less than or equal to three systemic therapies previously were treated with crizotinib 250 mg twice daily on a continuous daily dosing schedule in 28-day cycles. The OS (secondary end point) was analyzed for the total population, by country, and by number of previous chemotherapy regimens. QoL and safety were also evaluated. Results: With a median duration of follow-up of 56.1 months, the median OS was 44.2 months (95% confidence interval: 32.0–not reached) for the total population (N = 127). Differences in median OS were observed among individual countries and with number of previous regimens. The improvement in QoL found in the previous analysis was maintained with the extended follow-up. Treatment-related adverse events led to crizotinib dose reductions or permanent treatment discontinuations in 17.3% and 2.4%, respectively, of the patients. Conclusions: This is the largest trial of an ALK/ROS1 inhibitor to treat patients with ROS1-positive advanced NSCLC and provides a new benchmark for OS in East Asian patients. The QoL and safety profile with long-term follow-up were consistent with previous reports and support the continued use of crizotinib in the treatment of patients with ROS1-positive advanced NSCLC.

Keywords