Brigatinib receives FDA approval for ALK-positive metastatic NSCLC

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Brigatinib (Alunbrig) has received FDA approval for adult patients with anaplastic lymphoma kinase-positive metastatic non-small cell lung cancer as detected by an FDA-approved test.

Alunbrig is sponsored by Ariad Pharmaceuticals Inc.

FDA also approved the Vysis ALK Break Apart FISH Probe Kit (sponsored by Abbott Molecular Inc.) as a companion diagnostic for brigatinib.

Efficacy was investigated in ALTA 1L (NCT02737501), a randomized (1:1), open-label, multicenter trial in adult patients with advanced ALK-positive NSCLC who had not previously received an ALK-targeted therapy. The trial required patients to have an ALK rearrangement based on a local standard of care testing. The trial randomized 275 patients to receive brigatinib 180 mg orally once daily with a 7-day lead-in at 90 mg once daily (n=137) or crizotinib 250 mg orally twice daily (n=138). A subset of the clinical samples was retrospectively tested with the Vysis ALK Break Apart FISH Probe Kit. Of the enrolled patients, 239 had positive results using the Vysis diagnostic test (central results were negative for 20 patients and unavailable for 16 patients).

The major efficacy outcome measure was progression-free survival evaluated by a blinded independent review committee according to RECIST 1.1. Additional efficacy outcome measures as evaluated by the BIRC was confirmed overall response rate.

Estimated median PFS for patients treated with brigatinib was 24 months (95% CI: 18.5, NE) compared with 11 months (95% CI: 9.2, 12.9) for those treated with crizotinib (HR 0.49; 95% CI: 0.35, 0.68; p<.0001). Confirmed ORR was 74% (95% CI: 66, 81) and 62% (95% CI: 53, 70), respectively.

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