This is a phase 2 study whose purpose is see how useful investigational drug, avelumab, is in patients with locally advanced or metastatic penile cancer who are unfit for or progressed on platinum-based chemotherapy.

The usefulness of avelumab in this study population will be determined by anti-tumor activity assessed by objective response rate.

Avelumab is a monoclonal antibody that binds to a protein called programmed death-ligand 1 (PD-L1) and blocks its communication with another protein called programmed death protein 1 (PD-1). The communication of these proteins are thought to be important in the growth of tumors. Blocking these proteins from communicating may stop or shrink tumors.

Inclusion Criteria:

• Histologically confirmed squamous cell carcinoma of the penis
• Measurable disease per Immune-related Response Evaluation Criteria in Solid Tumors (iRECIST)
• Unresectable/metastatic disease that is unfit for platinum-based chemotherapy OR disease that has progressed on or after treatment with platinum-based chemotherapy
• ≥18 years of age
• Eastern Cooperative Oncology Group (ECOG) Performance Status 0-2

Exclusion Criteria:

• Prior immunotherapy with IL-2, IFN-α, or an anti-PD-1, anti-PD-L1, anti-PD-L2, anti-CD137, or CTLA-4 antibody (including ipilimumab), or any other antibody or drug specifically targeting T-cell co-stimulation or immune checkpoint pathways
• Major surgery ≤4 weeks or major radiation therapy ≤2 weeks prior to enrollment
• Known symptomatic central nervous system (CNS) metastases requiring steroids
• Active autoimmune disease that might deteriorate when receiving an immunostimulatory agent
• Diagnosis of prior immunodeficiency or organ transplant requiring immunosuppressive therapy