RecruitingPhase 1Drug trialA Phase 1 Study of OTS-412 (Recombinant Oncolytic Vaccinia Virus) in Treatment-refractory Solid Tumor Patients (South Korea)This clinical trial aims to determine whether the administration of the investigational drug OTS-412, OTS-412 in combination with hydroxyurea or hydroxyurea/atezolizumab is safe and effective for patients with various types of cancer.