IDEAYA Biosciences Announces IDE892, a Potential Best-in-Class MTA-Cooperative PRMT5 Inhibitor, Initiates Part 2 Monotherapy Expansion in the Phase 1/2 Study in MTAP-Deleted Pancreatic and Lung Cancers
PR Newswire
SOUTH SAN FRANCISCO, Calif., July 27, 2026
IDE892 is a potential best-in-class PRMT5 inhibitor with 1,400-fold selective MTA-PRMT5 cooperative binding vs SAM-PRMT5 cooperative binding, and CYP3A4 IC50 greater than 45 micromolar with no time-dependent inhibition of the 7 major cytochrome P450sIDE892 Phase 1/2 escalation has cleared multiple dose cohorts and projected efficacious target exposures have been achieved to initiate the Part 2 monotherapy expansion. The IDE892 escalation is ongoing in parallel and the MTD has not yet been reached IDE892 and IDE397 combination escalation are ongoing in MTAP NSCLC and PDAC, and IDE892 and pan-RAS combination FPI in MTAP PDAC is targeted for H2 2026MTAP-deletion is estimated to occur in up to 40% of PDAC and ~15% of NSCLCIDEAYA is targeting a MTAP/CDKN2A, KRAS, and Pancreatic Cancer R&D Day in Q4 2026. Topics will include rational combination strategies to target the underlying tumor heterogeneity and adaptive plasticity in PDAC and other solid tumor indicationsSOUTH SAN FRANCISCO, Calif., July 27, 2026 /PRNewswire/ -- IDEAYA Biosciences, Inc. (NASDAQ: IDYA), a leading precision medicine oncology company, today announced that initiation of Part 2 monotherapy expansion has been achieved in its Phase 1/2 clinical trial evaluating IDE892, a potential best-in-class methylthioadenosine (MTA)-cooperative inhibitor of PRMT5, in MTAP-deleted solid tumors, with a focus on non-small cell lung cancer (NSCLC) and pancreatic ductal adenocarcinoma (PDAC). IDE892 Phase 1/2 monotherapy expansion has been initiated at projected efficacious target human exposures where 24-hours target EC90 coverage have been achieved. The IDE892 maximum tolerated dose (MTD) has not yet been reached in the ongoing dose escalation.
