A 73-year-old male diagnosed with BRAF WT, stage IV melanoma...Targeted NGS demonstrated a homozygous CDKN2A/B/MTAP deletion and TERT mutation….The patient was administered MRTX1719 100 mg q.d. p.o. on a 21-day cycle and a slow decrease in all lesions, including a RECIST-defined partial response of 30% reduction of the splenic lesion that was observed at cycle 7 day 1. Subsequent disease assessments at cycle 9 day 1 and cycle 14 day 1 demonstrated continued response, with a 40% reduction of the splenic lesion in the latest assessment...