IDEAYA Biosciences, Inc. (NASDAQ: IDYA)

IDEAYA Biosciences, Inc. is a precision medicine oncology company dedicated to the discovery development and commercialization of transformative therapies for cancer. The company integrates small molecule drug discovery structural biology and bioinformatics with internal capabilities to identify and validate translational biomarkers. This approach enables the creation of targeted therapies that are aligned to the genetic drivers of disease. Its pipeline currently includes 9 potential 1st in class product candidates across 4 clinical focus areas: darovasertib for uveal melanoma ADC and DNA damage response combinations MTAP pathway and next generation therapies. The company’s mission is to bring forth the next wave of precision oncology therapies that are more selective more effective and deeply personalized with the goal of altering the disease course and improving clinical outcomes for patients with cancer.

The company generates revenue primarily through upfront payments milestone payments and potential royalties from licensing and collaboration agreements with pharmaceutical partners. In August 2025 Ideaya received a $210 million upfront payment from Servier for exclusive rights to develop and commercialize darovasertib outside the United States and is eligible for up to an additional $320 million in development regulatory and commercial milestone payments as well as royalties on net sales in those territories. Earlier the company obtained an upfront payment from Novartis for the darovasertib license and is entitled to milestone payments and tiered royalties on worldwide sales. Collaboration agreements with Pfizer Gilead Hengrui Pharma and Biocytogen may also generate further payments as milestones are achieved. No product sales have been reported to date because the company’s therapies remain in clinical development.

The company operates through the following segments: Darovasertib for Uveal Melanoma, ADC and DNA Damage Response Combinations, MTAP Pathway, and Next Generation Therapies.

• Darovasertib for Uveal Melanoma: Darovasertib is an oral selective protein kinase C inhibitor being developed for uveal melanoma a rare ocular cancer in which approximately 95% of patients have activating mutations in GNAQ or GNA11 that drive protein kinase C signaling. The company is conducting multiple clinical trials including the Phase 2/3 OptimUM 02 trial that evaluates darovasertib in combination with crizotinib in 1st line metastatic disease with an expected readout in the 1st quarter of 2026 that could support an accelerated approval filing in the United States. In addition the neoadjuvant OptimUM 10 trial and adjuvant OptimUM 11 trial are underway to assess the drug’s potential in earlier disease settings.

• ADC and DNA Damage Response Combinations: This segment focuses on topoisomerase I inhibitor based antibody drug conjugates such as DLL3 targeted IDE849 and B7H3/PTK7 targeted IDE034 combined with PARG inhibition for example IDE161 to enhance antitumor activity in small cell lung cancer neuroendocrine carcinoma and other solid tumors. IDE849 is being evaluated by Hengrui Pharma in a Phase 1 trial in China with initial data showing activity in patients with brain metastasis. IDE034 has received IND clearance from the FDA and a 1st patient is expected in the 1st quarter of 2026. IDE161 has received IND clearance from the FDA and is being prepared for a Phase 1 combination trial with IDE849 in the 2nd quarter of 2026.

• MTAP Pathway: This segment develops MAT2A inhibitors such as IDE397 alone or in combination with Trop 2 directed ADC Trodelvy or MTA cooperative PRMT5 inhibitors such as IDE892 to exploit synthetic lethality in tumors with methylthioadenosine phosphorylase deletions including urothelial and non small cell lung cancer. The company is conducting a Phase 1/2 trial with Gilead to evaluate IDE397 in combination with Trodelvy in patients with MTAP deleted urothelial cancer and non small cell lung cancer. Initial data from the urothelial cancer cohort were presented in September 2025. IDE892 has received IND clearance and a Phase 1 dose escalation trial is planned for the 1st quarter of 2026.

• Next Generation Therapies: This segment pursues novel targets that counteract tumor heterogeneity and resistance such as dual KAT6/7 inhibition with IDE574 and WRN helicase inhibition with IDE275. IDE574 received IND clearance in January 2026 and a Phase 1 dose escalation trial is slated for the 1st quarter of 2026 in breast lung prostate and colorectal cancers. IDE275 was part of a collaboration with GSK which ended in March 2026 and the company now intends to complete the dose expansion portion of the Phase 1 trial to inform further development.

Ideaya Biosciences occupies a niche position in the precision oncology sector as it focuses on biomarker driven synthetic lethality and antibody drug conjugate combinations. Its competitive advantages include a proprietary discovery platform that integrates chemistry structural biology and bioinformatics and a pipeline of 1st in class candidates that target genetically defined patient populations. The company faces competition from larger pharmaceutical and biotechnology firms such as Immunocore which markets Tebentafusp for uveal melanoma and Amgen which developed Tarlatamab for DLL3 expressing tumors. Additionally numerous early stage biotech companies are pursuing similar synthetic lethality and ADC strategies. Ideaya’s collaborations with established partners like Pfizer Gilead and Servier provide access to resources expertise and commercial reach that help mitigate the resource gap. The company’s emphasis on early intervention in adjuvant and neoadjuvant settings further differentiates its approach from many competitors that focus primarily on advanced disease.

Since the company has not yet commercialized any product its prospective customers are patients with specific oncologic indications such as uveal melanoma small cell lung cancer neuroendocrine carcinoma urothelial carcinoma and non small cell lung cancer as well as the healthcare providers who will administer its therapies. Ideaya also interacts with pharmaceutical companies that serve as development and commercial partners for example Servier Pfizer Gilead Hengrui Pharma and Biocytogen. These collaborations provide funding expertise and potential pathways to market while the company retains rights to its therapies in certain territories.