RecruitingPhase 4Drug trialCosibelimab for CSCC in Patients With Kidney Transplant or Hematologic MalignancyThis is study is to evaluate the safety and efficacy of cosibelimab in special populations with advanced cutaneous squamous cell carcinoma (CSCC). The name of the drug involved in this research study is: -cosibelimab (a type of an anti-PD-L1 antibody)