We enrolled previously treated patients with advanced or metastatic NSCLC, or untreated, cisplatin-ineligible patients with advanced or metastatic UC. Patients received avelumab 800 mg every 2 weeks (Q2W) and axitinib 5 mg orally two times daily....ORRs were higher in patients with lower TMB (˂median) in the NSCLC cohort and higher TMB (≥median) in the UC cohort.