XL092

The study population for this Phase 2 study will include men and women ≥ 18 with confirmed renal cell carcinoma who have progressed on adjuvant anti-PD-1/PD-L1 therapy, the current standard of care. Subjects will be randomized to Arm A or Arm B. Study treatment will be given in 28-day (4 week) cycles. Arm A treatment will consist of zanzalintinib (XL092) alone and will be taken once daily continuously (Day 1-Day 28). Arm B treatment will consist of XL092 plus nivolumab. XL092 will be taken once daily continuously (Day 1-Day 28) and nivolumab will be administered every 4 weeks (Day 1). Treatment will continue until progression by RECIST 1.1, toxicity, or other reasons as appropriate.

This multicenter study examines the safety and feasibility of the combination of neoadjuvant XL092 and cemiplimab prior to surgical resection in participants with wild-type (WT) anaplastic thyroid cancer (ATC) that has a BRAF mutation (BRAF V600E).

The purpose of this study is to determine how well the study drug XL092 is helping to treat a participant's cancer after 16 weeks of treatment. Researchers will also look at how safe the XL092 is and how well the XL092 is working. XL092 is an oral tablet that will be taken once a day. Participants will return to clinic for regular visits for checkups and tests.