Summary of IDEAYA Biosciences Conference Call Company Overview - **Company**: IDEAYA Biosciences (NasdaqGS:IDYA) - **Date**: November 06, 2025 - **Context**: Discussion led by CEO Yujiro Hata regarding recent developments in the company's pipeline and strategic direction. Key Industry and Company Insights Pipeline Developments - IDEAYA reported one of its most productive quarters since its founding, with significant updates presented at major medical conferences, including the World Conference on Lung Cancer and ESMO [3][4] - The lead program is nearing randomized progression-free survival (PFS) results, with expectations for an accelerated approval filing in the U.S. by year-end or early next year [3][4] - Enrollment for clinical trials is progressing well, with full enrollment expected soon for both overall survival (OS) and randomized OS studies [4] Uveal Melanoma Focus - IDEAYA aims for darovasertib to become the standard of care across the uveal melanoma patient journey, with plans for a phase three randomized study in the adjuvant setting in the first half of next year [7][9] - The annual incidence of metastatic uveal melanoma is estimated at 4,000-5,000 patients, with potential for higher numbers in neoadjuvant and adjuvant settings [7][8] - The company has received Breakthrough Therapy Designation from the FDA based on promising data from clinical cohorts [10] Clinical Trial Data and Expectations - In the enucleation cohort, the eye preservation rate exceeded the 10% threshold required for full approval, indicating strong efficacy [10][11] - The plaque therapy cohort showed a median vision improvement of 14 letters, significantly higher than previous reports [11] - The company anticipates that the first data from the enucleation cohort will be available in approximately five quarters, with visual acuity results expected 18 months after the last patient is enrolled [19][20] MTAP Deletion Market - IDEAYA is focusing on MTAP deletion across multiple tumor types, prioritizing lung cancer, urothelial cancer, and pancreatic ductal adenocarcinoma (PDAC) [35] - The confirmed response rate for ID 397 in monotherapy is in the 25-30% range, with combination therapy showing a response rate of approximately 50% [37][38] - The company is exploring co-alterations in MTAP, particularly with RAS and CDK N2A, to enhance treatment efficacy [50][51] DLL3 Asset Development - IDEAYA's DLL3 ADC has shown a confirmed response rate of 70% in the second-line setting, with a PFS of approximately 6.7 months [55] - The company is considering a monotherapy accelerated approval path, which could provide a competitive advantage over other companies requiring comparator arms [57] Other Assets and Future Directions - IDEAYA is advancing several other assets, including poltheta partnered with GSK, and a bispecific ADC targeting B7H3 and PTK7, which has shown promising preclinical results [63][64] - The company is leveraging machine learning to enhance drug discovery efficiency, aiming for a 30% acceleration in time to IND [73][74] Additional Important Points - The collaboration with the FDA has been positive, allowing for adjustments in trial design that reduce patient enrollment numbers without compromising study integrity [24] - The company is focused on building a world-class precision oncology portfolio and is actively seeking partnerships to advance its pipeline [66] This summary encapsulates the key points discussed during the conference call, highlighting IDEAYA Biosciences' strategic focus, pipeline advancements, and market opportunities.