Inclusion Criteria:
- Histologically or cytologically confirmed diagnosis of metastatic ccRCC.
- Age 18 years and older
- ECOG 0-1
- Progressive disease after treatment with single-agent nivolumab
- Life expectancy at least 3 months
- Presence of measurable disease per RECIST 1.1 criteria
- Presence of a metastatic lesion greater than 1 cm in size that is amenable to radiation treatment
- Adequate organ system function
- WOCBP and men who are sexually active with WOCBP must agree to use appropriate method(s) of contraception.
Exclusion Criteria:
- Patients are excluded if they have active brain metastases or leptomeningeal metastases (exceptions outlined in the protocol).
- Active, known or suspected autoimmune disease, such as systemic lupus erythematosus, that require treatment with immune suppressing drugs.
Note: Subjects are permitted to enroll if they have vitiligo, type I diabetes mellitus, residual hypothyroidism due to autoimmune condition only requiring hormone replacement, psoriasis not requiring systemic treatment, or conditions not expected to recur in the absence of an external trigger
- Presence of a condition requiring systemic treatment with either corticosteroids (> 10 mg daily prednisone or equivalents) or other immunosuppressive medications within 14 days of study drug administration.
Note: Inhaled or topical steroids and adrenal replacement doses > 10 mg daily prednisone equivalents are permitted in the absence of active autoimmune disease.
- Unstable angina or uncontrolled congestive heart failure
- Uncontrolled hypercalcemia
- Positive test for hepatitis B virus surface antigen (HBV sAg) or hepatitis C virus ribonucleic acid (HCV antibody) indicating acute or chronic infection
- Known history of testing positive for human immunodeficiency virus (HIV) or known acquired immunodeficiency syndrome (AIDS)
- Presence of other malignant diseases, except non-melanoma skin care
- History of allergy to study drug components.
- History of severe hypersensitivity reaction to any monoclonal antibody.
- Anti-cancer treatment including surgery, radiotherapy, chemotherapy, other immunotherapy, or investigational therapy within 14 days of registration.
- Women must not be pregnant or breastfeeding. WOCBP must have a negative serum pregnancy test (minimum sensitivity 25 IU/L or equivalent units of HCG) within 7 days prior to registration.
- Any other medical condition for which treatment with ipilimumab or nivolumab would be medically contraindicated