This is a Phase II, open label, single arm, multicenter study of NK012 in patients with sensitive relapsed SCLC (at least 90 days since first line therapy) or refractory relapsed SCLC (< 90 days since first line therapy). NK012 will be administered by intravenous infusion over 30 minutes once every 28 days (on Day 1 of each cycle). Patients will be screened for UGT1A1 polymorphism prior to enrollment.
The purpose of this study is to determine whether NK012 is safe and effective in the treatment of relapsed small cell lung cancer.