RecruitingDrug trialMaintenance Zanzalintinib With Etoposide After HDCT in GCTThis is an open label, single arm phase I/II trial of maintenance zanzalintinib in combination with oral etoposide in patients with relapsed GCT treated with HDCT and PBSCT with a safety lead-in cohort in patients with relapsed, refractory metastatic GCT.