Summary of IDEAYA Biosciences FY Conference Call Company Overview - **Company**: IDEAYA Biosciences (NasdaqGS:IDYA) - **Industry**: Precision medicine oncology Key Points Lead Program: Darovasertib - **Current Status**: In first-line registrational study for metastatic uveal melanoma - **Upcoming Milestones**: Randomized median progression-free survival (PFS) results expected by year-end 2025, with full enrollment for median overall survival (OS) component nearly complete, targeting over 450 patients [2][3][4] - **Breakthrough Therapy Designation**: Received for a phase 3 randomized neoadjuvant trial, which is now active with patients in screening [3][4] Patient Journey in Uveal Melanoma - **Lack of Approved Therapies**: No systemic approved therapies in neoadjuvant or adjuvant settings, with most metastatic patients also lacking approved options [5][6] - **Treatment Options**: Initial treatments include eye resection or plaque therapy, followed by adjuvant phase with no available therapies [7][8] Objectives for Neoadjuvant and Adjuvant Trials - **Primary Endpoint**: Eye preservation rate exceeding 10% with 95% confidence interval for the enucleation cohort [9][10] - **Visual Acuity Goals**: Aim for 20% or more patients in treatment arm passing a 15-letter BCVA vision test [10] DLL3 Topo ADC Program - **Efficacy Data**: Confirmed response rate of 70% in second-line small cell lung cancer at a dose of 2.4 mg/kg [15] - **Safety Profile**: Grade three or higher adverse events (AEs) below 20%, indicating potential for dose escalation [16] Future Development Plans - **Focus Areas**: Small cell lung cancer and neuroendocrine tumors (NETs) with plans to share more data in 2026 [20][23] - **MAT2A and MTAP Pathway**: Ongoing phase two trials for IDE397 (MAT2A inhibitor) and phase one for PRMT5 inhibitor, with updates expected in the first half of next year [24][25] Bispecific ADC Development - **B7-H3 and PTK7**: First-in-class bispecific ADC targeting co-expressed antigens in various tumor types, including non-small cell lung cancer and colorectal cancer [32][34] - **Patient Population**: Approximately one-third of lung cancer patients and 40%-50% of colorectal cancer patients are expected to express both antigens [34] Key Takeaways - **Upcoming Focus**: Randomized PFS results are critical for transitioning towards commercialization [38] - **Overall Strategy**: Emphasis on combination therapies and targeting co-alterations to enhance treatment efficacy [29][30] This summary encapsulates the essential insights from the IDEAYA Biosciences FY Conference Call, highlighting the company's strategic focus, ongoing clinical trials, and future development plans in the oncology sector.

Summary of IDEAYA Biosciences Conference Call Company Overview - **Company**: IDEAYA Biosciences (NasdaqGS:IDYA) - **Industry**: Precision medicine oncology - **Lead Program**: Darovasertib, currently in a registrational trial for frontline metastatic uveal melanoma, with an expected median progression-free survival (PFS) readout by year-end 2025 to Q1 2026 [2][4] Key Clinical Programs - **Pipeline**: IDEAYA has a deep pipeline with eight clinical stage programs, targeting nine by year-end 2025 [2] - **MTAP Deletion Focus**: - ID397 (Phase 2 MAT2A inhibitor) - ID892 (Phase 1 MTAP-cooperative PRMT5 inhibitor) [3] - **Antibody-Drug Conjugates (ADC)**: - DLL3 topo ADC with recent presentations at major conferences - Bispecific B7H3 PTK7 ADC (Phase 1) - ID161 (PARG inhibitor) [3] Upcoming Data and Expectations - **PFS Events**: Approximately 130 PFS events are needed for top-line results, with expectations for results in early 2026 [4] - **Control Arm Expectations**: Anticipated PFS in the control arm is 2-3 months, while treatment arm results have shown consistent 7-month PFS [5][6] - **Overall Survival (OS) Data**: OS data from the Society of Melanoma Research (SMR) indicated potential for median OS to increase to 22 months, pending further patient follow-up [13] Regulatory and Market Considerations - **NDA Submission**: Plans for a pre-NDA meeting with the FDA are anticipated as PFS results are finalized [12] - **Pricing Strategy**: Expected pricing in the low $50,000s per month, with considerations for the robustness of the dataset and unmet medical needs in the market [14] - **Compendia Strategy**: Plans to submit HLA-A*02 positive data for potential inclusion in the label, which would enhance promotional capabilities [18][20] Neoadjuvant and Adjuvant Studies - **Neoadjuvant Study**: Enrollment is expected to accelerate with increased site activation, aiming for completion in approximately five quarters [21] - **Adjuvant Program**: Planning to start a phase three adjuvant study in collaboration with Servier, targeting 400-450 patients [26] ADC Programs and Future Directions - **DLL3 ADC**: Positive data supports a potential path for accelerated approval in small cell lung cancer and neuroendocrine tumors [28] - **Combination Studies**: Plans to explore combinations with standard care agents to enhance treatment durability [34] Additional Pipeline Developments - **MAT2A Program**: Updates on Trodalvy combo data in urothelial carcinoma expected in the first half of 2026 [39] - **CAT67 Program**: IND filing planned by year-end 2025, focusing on dual inhibition of CAT6 and CAT7 [45] Conclusion - **Key Catalysts**: Investors should focus on upcoming PFS results, NDA submission timelines, and ongoing clinical trials across various programs through 2026 [48]