Sunitinib Scheduling in Metastatic Renal Cell Carcinoma (mRCC)

Inclusion Criteria:

1. Histologically or cytologically-confirmed metastatic renal cell carcinoma of clear cell histology. Prior nephrectomy is not a requirement for eligibility
2. Age \>/=18 years
3. Measurable or evaluable metastatic disease per RECIST v 1
4. ECOG performance status 0-1
5. Normal organ and bone marrow function as defined by: Serum aspartate transaminase (AST) or serum glutamic oxaloacetic transaminase (SGOT) and serum alanine transaminase (ALT) or serum glutamic pyruvic transaminase (SGPT) \</= 2.5 x laboratory upper limit of normal (ULN); Total serum bilirubin \</= 2.0 x ULN; Absolute neutrophil count (ANC) \>/= 1500/µL; Platelets \>/= 100,000/µL; Hemoglobin \>/= 9.0 g/dL (transfusion permitted); Serum calcium \</= 12.0 mg/dL; Serum creatinine \</= 2.5 mg/dL
6. Patients with a history of deep venous thromboembolism or pulmonary embolism on treatment with anticoagulation are eligible for the study.
7. Subjects must have the ability to understand and the willingness to sign a written informed consent document

Exclusion Criteria:

1. Prior treatment with sunitinib or any other systemic therapy in the metastatic setting (prior neo/adjuvant therapy will be allowed if completed \> 6 months prior to registration and therapy not discontinued for toxicity)
2. Uncontrolled hypertension (defined as blood pressure \>140/90 mm Hg not controlled with anti-hypertensives)
3. Prior intraabdominal, intrathoracic, vascular, spinal or intracranial surgery or radiation therapy within 4 weeks of starting treatment
4. History of or known brain metastases, spinal cord compression, or carcinomatous meningitis
5. New York Heart Association (NYHA) grade II or greater congestive heart failure
6. Current treatment on another therapeutic clinical trial
7. Any of the following within the preceding 6 months- myocardial infarction, severe/unstable angina, severe peripheral vascular disease (claudication) or procedure on peripheral vasculature, coronary/peripheral artery bypass, graft, cerebrovascular accident or transient ischemic attack, clinically significant bleeding
8. Pregnant or breastfeeding women are excluded from this study because there is an unknown, but potential risk for adverse events in nursing infants secondary to treatment of the mother with sunitinib. Breastfeeding must be discontinued if the mother is treated with sunitinib
9. Known human immunodeficiency virus (HIV) or acquired immunodeficiency syndrome (AIDS)-related illness
10. HIV-positive patients on combination antiretroviral therapy are ineligible because of the potential for pharmacokinetic interactions with sunitinib. In addition, these patients are at increased risk of lethal infections when treated with marrow suppressive therapy