Locally Advanced Renal Cell Carcinoma

This phase I/II trial tests the safety and tolerability of an experimental personalized vaccine when given by itself and with pembrolizumab in treating patients with solid tumor cancers that have spread to other places in the body (advanced). The experimental vaccine is designed target certain proteins (neoantigens) on individuals' tumor cells. Immunotherapy with monoclonal antibodies, such as pembrolizumab, may help the body's immune system attack the cancer, and may interfere with the ability of tumor cells to grow and spread. Giving the personalized neoantigen peptide-based vaccine with pembrolizumab may be safe and effective in treating patients with advanced solid tumors.

All subjects will receive zanzalintinib 100mg orally (PO) once daily plus nivolumab standard of care dosing (i.e., 240mg IV every 2 weeks or 480mg IV every 4 weeks) for a total of 12 weeks, followed by restaging scan/evaluation for surgical operability and an adaptive approach that includes (1) surgical resection if the participant is eligible for surgery (Cohort A), (2) up to 48 weeks total (from Cycle 1 Day 1) of zanzalintinib plus nivolumab if the participant has partial response or stable disease but remains inoperable (Cohort B1), or (3) stopping protocol mandated treatment to receive standard of care systemic therapy and continue follow up per protocol if the participant has disease progression (Cohort B2).