The Food and Drug Administration has granted accelerated approval to brigatinib for the treatment of patients with metastatic anaplastic lymphoma kinase (ALK)–positive non–small cell lung cancer (NSCLC) who have progressed on or are intolerant to crizotinib.
Approval was based on a meaningful and durable overall response rate in a two-arm, open-label, multicenter trial of 222 patients with locally advanced or metastatic ALK-positive NSCLC who had progressed on crizotinib. Patients were randomized to brigatinib orally either 90 mg once daily (112 patients) or 180 mg once daily following a 7-day lead-in at 90 mg once daily (110 patients).
The overall response rate was 48% (95% confidence interval, 39%-58%) in the 90-mg arm and 53% (95% CI, 43%-62%) in the 180-mg arm, the FDA said in a written statement .
The median duration of response was 13.8 months in both arms.
The most common adverse reactions in 219 patients who received at least one dose were nausea, diarrhea, fatigue, cough, and headache. The most common serious adverse reactions were pneumonia and interstitial lung disease/pneumonitis. The rate of fatal adverse reactions was 3.7%; they were pneumonia in two patients and sudden death, dyspnea, respiratory failure, pulmonary embolism, bacterial meningitis, and urosepsis in one patient each. Visual disturbances also occurred in patients receiving brigatinib. The FDA cautions that patients receiving brigatinib should be monitored for new or worsening respiratory symptoms; hypertension; bradycardia; visual symptoms; and elevations in amylase, lipase, blood glucose, and creatine phosphokinase.
The recommended dosing of brigatinib, marketed as Alunbrig by Takeda Pharmaceutical, is 90 mg orally once daily for the first 7 days then, if tolerated, increase to 180 mg orally once daily.
Full prescribing information is available here .