The phase 2, single-arm, multicenter, open-label J-ALTA study evaluated the efficacy and safety of brigatinib in Japanese patients with advanced ALK+ non-small-cell lung cancer (NSCLC).....Patients with a TP53 mutation had significantly shorter PFS (median, 1.8 months) than patients with TP53 WT (median, 9.3 months; HR, TP53 mutation versus WT: 4.9 [95% CI, 3.7–6.5]; p < 0.0001; Figure 4B) and shorter DoR (median, 4.8 months) than patients with TP53 WT (median, 16.4 months; HR: 5.7 [1.8–18.6]; p = 0.01).