The purpose of this clinical study is to assess the safety and efficacy of hSTC810 and paclitaxel combination therapy in patients with relapsed or refractory extensive stage small cell lung cancer.

This phase II/III trial compares the effect of adding radiation therapy to the usual maintenance therapy with atezolizumab versus atezolizumab alone in patients who have already received atezolizumab plus chemotherapy for the treatment of small cell lung cancer that...