Updated clinical data from three darovasertib trials in uveal melanoma, to be presented at ESMO Congress 2026 (PR Newswire, October 19, 2026, 06:00 ET). OptimUM-01 (Phase 1/2, darovasertib + crizotinib in HLA-A*02:01-positive metastatic uveal melanoma (mUM), Phase 2 expansion, data cutoff March 23, 2026, N=101 evaluated, median follow-up 10.4 months, ~66% with >=2 prior lines): treatment-naive (N=13) ORR 36.4% (4/11), DCR 90.9%, median DOR 10.2 months, median PFS 7.4 months, median OS 27.1 months; prior tebentafusp as only prior systemic therapy (N=15) ORR 35.7% (5/14), DCR 85.7%, median DOR 5.6 months, median PFS 5.7 months, median OS 12.1 months; overall (N=101) ORR 22.1% (19/86), DCR 80.2%, median DOR 7.4 months, median PFS 5.4 months, median OS 13.4 months; most common treatment-related adverse events diarrhea (82%), nausea (76%), peripheral edema (70%) and vomiting (57%), with related adverse events leading to discontinuation in 9 (8.9%) participants. OptimUM-02 (registrational Phase 2/3, 1L HLA-A*02:01-negative mUM): subgroup analyses showed consistent improvements in ORR and PFS for darovasertib + crizotinib versus investigator's choice of therapy across baseline LDH, ECOG performance status, largest target lesion size and choice of control therapy, building on the June 2026 topline (median PFS 6.9 months by blinded independent central review and 6.7 months by investigator versus 3.1 and 2.7 months for investigator's choice). OptimUM-09 (Phase 2, neoadjuvant single-agent darovasertib in primary uveal melanoma, abstract data on 116 patients: 66 enucleation Cohort 1, 50 plaque brachytherapy Cohort 2; updated ESMO data on 119 patients, cutoff June 15, 2026): robust tumor shrinkage in approximately 80% of patients, >=20% tumor shrinkage in 57.8% (67/116) (Cohort 1: 51.5% [34/66]; Cohort 2: 66% [33/50]), a 57% eye preservation rate in the enucleation cohort, 66% of plaque brachytherapy patients achieving a reduced projected radiation dose to critical eye structures, and 86.3% of patients free from metastasis at 15 months (Cohort 1: 79.7%; Cohort 2: 94.4%); most common treatment-related adverse events diarrhea (64%), nausea (58%), fatigue (33%) and vomiting (28%), treatment-related serious adverse events in 6.0% of patients. IDEAYA is submitting an NDA for darovasertib + crizotinib in 1L mUM under the FDA real-time oncology review program, expecting to complete the submission in 2H 2026.