ATM and neoplasm: In stratified analyses by tumor stage, ATM/RB1 mutations were associated with shorter OS in both stage II/III patients (crude HR = 2.39, 95% CI, 1.09–5.24, p = 0.030; adjusted HR = 2.75, 95% CI, 1.23–6.20, p = 0.014) and stage IV patients (crude HR = 1.70, 95% CI, 1.01–2.84, p = 0.045; adjusted HR = 1.91, 95% CI, 1.13–3.24, p = 0.016).