Brigatinib in Patients With Crizotinib-Refractory Anaplastic Lymphoma Kinase-Positive Non-Small-Cell Lung Cancer: A Randomized, Multicenter Phase II Trial

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Kim, Dong-Wan; Tiseo, Marcello; Ahn, Myung-Ju; Reckamp, Karen L.; Hansen, Karin Holmskov; Kim, Sang-We; Huber, Rudolf M.; West, Howard L.; Groen, Harry J. M.; Hochmair, Maximilian J.; Leighl, Natasha B.; Gettinger, Scott N.; Langer, Corey J.; Rodriguez, Luis G. Paz-Ares; Smit, Egbert F.; Kim, Edward S.; Reichmann, William; Haluska, Frank G.; Kerstein, David; Camidge, D. Ross

Issue Date
American Society of Clinical Oncology
Journal of Clinical Oncology, Vol.35 No.22, pp.2490-2498
Purpose Most crizotinib-treated patients with anaplastic lymphoma kinase gene (ALK)-rearranged non-smallcell lung cancer (ALK-positive NSCLC) eventually experience disease progression. We evaluated two regimens of brigatinib, an investigational next-generation ALK inhibitor, in crizotinib-refractory ALK-positive NSCLC. Patients and Methods Patients were stratified by brain metastases and best response to crizotinib. They were randomly assigned (1: 1) to oral brigatinib 90 mg once daily (arm A) or 180 mg once daily with a 7-day lead-in at 90 mg (180 mg once daily [with lead-in]; arm B). Investigator-assessed confirmed objective response rate (ORR) was the primary end point. Results Of 222 patients enrolled (arm A: n = 112, 109 treated; arm B: n = 110, 110 treated), 154 (69%) had baseline brain metastases and 164 of 222 (74%) had received prior chemotherapy. With 8.0-month median follow-up, investigator-assessed confirmed ORR was 45% (97.5% CI, 34% to 56%) in arm A and 54% (97.5% CI, 43% to 65%) in arm B. Investigator-assessed median progression-free survival was 9.2 months (95% CI, 7.4 to 15.6) and 12.9 months (95% CI, 11.1 to not reached) in arms A and B, respectively. Independent review committee-assessed intracranial ORR in patients with measurable brain metastases at baseline was 42% (11 of 26 patients) in arm A and 67% (12 of 18 patients) in arm B. Common treatment-emergent adverse events were nausea (arm A/B, 33%/ 40%), diarrhea (arm A/B, 19%/38%), headache (arm A/B, 28%/27%), and cough (arm A/B, 18%/ 34%), and were mainly grades 1 to 2. A subset of pulmonary adverse events with early onset (median onset: day 2) occurred in 14 of 219 treated patients (all grades, 6%; grade >= 3, 3%); none occurred after escalation to 180 mg in arm B. Seven of 14 patients were successfully retreated with brigatinib. Conclusion Brigatinib yielded substantial whole-body and intracranial responses as well as robust progressionfree survival; 180 mg (with lead-in) showed consistently better efficacy than 90 mg, with acceptable safety. (C) 2017 by American Society of Clinical Oncology
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College of Medicine/School of Medicine (의과대학/대학원)Dept. of Medicine (의학과)Journal Papers (저널논문_의학과)
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