RecruitingPhase 1Biological interventionXL092 and Cemiplimab in BRAF WT Thyroid CancerThis 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).