This is a study to determine the clinical benefit (how well the drug works), safety and tolerability of combining varlilumab and atezolizumab. Phase l of the study will enroll patients with a number of tumor types; Phase ll will enroll only patients with renal cell carcinoma (RCC).

Many tumor cells, in contrast to normal cells, have been shown to require the amino acid glutamine to produce energy for growth and survival. To exploit the dependence of tumors on glutamine, CB-839, a potent and selective inhibitor of the first enzyme in glutamine utilization, glutaminase, will be tested in this Phase 1 study in patients with solid tumors.

“A separate cohort of patients with non-clear cell RCC with papillary features will be enrolled in order to gather information regarding the efficacy given the rarity of these entities.”

At the present time, there are no drugs that have been proven to work in patients with papillary kidney cancer that has spread (metastasized) beyond the kidneys. Researchers are interested in determining whether the combination of the drugs bevacizumab and erlotinib can be used to treat metastatic papillary kidney cancer.

This clinical study is being conducted at multiple sites to determine the best confirmed response rate, safety, and tolerability of GSK1363089 treatment in papillary renal cell carcinoma. Papillary renal cell carcinoma may be classified into hereditary and sporadic forms; subjects with either classification will be accepted into this study.