Treatment with systemic immunostimulatory agents (including, but not limited to, interferon-alpha or interleukin-2 [aldesleukin]) within 6 weeks prior to cycle 1, day 1. Treatment with systemic immunostimulatory agents (including, but not limited to, interferon [IFN]-alpha or interleukin [IL]-2) within 6 weeks prior to cycle 1, day 1 Treatment with systemic immunostimulatory medications (including, but not limited to interferon [IFN]-alpha or interleukin [IL]-2 within 42 days prior to randomization Patients must not have had systemic chemotherapy or immunotherapy, including, but not limited to interferon alfa-2b, high dose interleukin 2 (IL-2), pegylated interferon (PEG-IFN), anti-programmed cell death protein 1 (PD-1), anti-PD-L1, intra-tumoral, or vaccine therapies within 6 weeks prior to cycle 1, day 1; patients must not have received or be planning to receive any of the prohibited therapies during protocol treatment; prior intravesical interferon therapy is allowed Prior treatment with systemic immunostimulatory agents (including, but not limited to, interferon [IFN]-alpha or interleukin [IL]-2) is allowed, provided the following is met: minimum of 6 weeks prior to cycle 1, day 1 Treatment with systemic immunostimulatory agents (including, but not limited to, interferon [IFN]-alpha or interleukin [IL]-2) within 6 weeks prior to cycle 1, day 1 Treatment with systemic immunostimulatory agents (including, but not limited to, interferon [IFN]-alpha or interleukin [IL]-2) within 6 weeks prior to cycle 1, day 1 Treatment with systemic immunostimulatory agents (including but not limited to interferon [IFN]-alpha or interleukin [IL]-2) within 6 weeks or five half-lives of the drug (whichever is shorter) prior to cycle 1, day 1 MEDICATION-RELATED: Treatment with systemic immunostimulatory agents (including but not limited to interferon [IFN]-alpha or interleukin [IL]-2) within 6 weeks or five half-lives of the drug (whichever is shorter) prior to cycle 1, day 1. Treatment with systemic immunostimulatory agents (including but not limited to interferon [IFN]-alpha or interleukin [IL]-2) within 6 weeks or five half-lives of the drug (whichever is shorter) prior to start of study treatment. Treatment with systemic immunostimulatory agents (including but not limited to interferon [IFN]-a or interleukin [IL]-2) within 4 weeks or five half-lives of the drug (whichever is shorter) prior to cycle 1, day 1 Treatment with systemic immunostimulatory agents (including but not limited to interferon [IFN]-a or interleukin [IL]-2) within 6 weeks or five half-lives of the drug (whichever is shorter) prior to study treatment (Atezolizumab-related exclusion) Treatment with systemic immunostimulatory agents (including but not limited to interferon [IFN]-(alpha) or interleukin [IL]-2) within 6 weeks or five half-lives of the drug (whichever is shorter) prior to cycle 1, day 1 Treatment with systemic immuno-stimulatory agents (including but not limited to interferon [IFN] or interleukin [IL]-2) within 6 weeks or five half-lives of the drug (whichever is shorter) prior to cycle 1, day 1 Treatment with systemic immunostimulatory agents (including but not limited to interferon [IFN]-alpha or interleukin [IL]-2) within 6 weeks or five half-lives of the drug (whichever is shorter) prior to cycle 1, day 1 Patients who have received treatment with systemic immunostimulatory agents (including, but not limited to, interferon [IFN]-alpha or interleukin [IL]-2) within 6 weeks before initiation of study treatment Treatment with systemic immunostimulatory agents (including but not limited to interferon [IFN] or interleukin [IL]-2) within 6 weeks or five half-lives of the drug (whichever is shorter) prior to cycle 1, day 1. Treatment with systemic immunostimulatory agents (including, but not limited to, interferon-alpha or interleukin-2) within 6 weeks or five half-lives of the drug (whichever is shorter) prior to registration Treatment with systemic immunostimulatory agents (including but not limited to interferon [IFN]-alpha or interleukin [IL]-2) within 6 weeks or five half-lives of the drug (whichever is shorter) prior to cycle 1, day 1 Treatment with systemic immunostimulatory agents (including, but not limited to, interferon [IFN]-alpha or interleukin [IL]-2) within 6 weeks prior to cycle 1, day 1 Treatment with systemic immunostimulatory agents (including but not limited to IFN-alpha, IL-2) within 6 weeks or five half-lives of the drug (whichever is shorter) prior to cycle 1, day 1 Hypersensitivity to interferon-alpha (IFN-alpha) Treatment with systemic immunostimulatory agents (including but not limited to interferon [IFN] Treatment with systemic immunostimulatory agents (including but not limited to interferon [IFN]-alpha or interleukin [IL]-2) within 6 weeks or five half-lives of the drug (whichever is shorter) prior to cycle 1, day 1 Treatment with systemic immunostimulatory agents (including, but not limited to, interferon [IFN]-alpha or interleukin [IL]-2) within 6 weeks prior to cycle 1, day 1 Treatment with systemic immunostimulatory agents (including but not limited to interferon [IFN]-alpha or interleukin [IL]-2) within 6 weeks or five half-lives of the drug (whichever is shorter) prior to cycle 1, day 1 Only prior cytokine based treatment for metastatic RCC [eg, interferon-alpha (IFN-alpha) or interleukin 2 (IL-2)] as prior therapy is allowed Treatment with systemic immunostimulatory agents (including, but not limited to, interferon [IFN]-alpha or interleukin [IL]-2) within 6 weeks prior to cycle 1, day 1 A patient may be treatment naïve; however, up to two prior regimens for metastatic melanoma are allowed; prior adjuvant interferon (IFN)-alpha is allowed; no prior therapy with bevacizumab, aflibercept or interleukin-2 (IL-2)