Rigel Announces Poster Presentations at the 2025 ASCO Annual Meeting and EHA2025 Congress

Core Insights - Rigel Pharmaceuticals is set to present seven posters at the 2025 ASCO Annual Meeting and EHA Congress, focusing on their hematology and oncology product portfolio, particularly GAVRETO® and REZLIDHIA® [1][2][3] Group 1: GAVRETO® (pralsetinib) - GAVRETO is being highlighted for its treatment of metastatic RET fusion-positive non-small cell lung cancer (NSCLC), with final data from the Phase 1/2 ARROW study demonstrating a 70.3% overall response rate (ORR) and a median duration of response (DOR) of 19.1 months [6][8] - The study also reported a median overall survival (OS) of 44.3 months and a median progression-free survival (PFS) of 13.1 months, with notable differences in PFS across regions: 25.9 months in the U.S. compared to 12.6 months in Asia and 12.9 months in Europe [6][8] - Additional data from the ARROW study indicated promising anti-tumor activity in various RET fusion-positive solid tumors, suggesting GAVRETO's potential to address unmet medical needs [3][6] Group 2: REZLIDHIA® (olutasidenib) - REZLIDHIA is being presented for its efficacy in relapsed or refractory acute myeloid leukemia (AML), with data supporting its use in earlier lines of treatment, particularly for patients with mutated isocitrate dehydrogenase-1 (mIDH1) [3][5] - In a pivotal cohort of R/R AML patients, REZLIDHIA showed a 50% ORR and a 30% complete response (CR) rate, with a median duration of CR of 17.6 months [12] - The drug demonstrated clinically meaningful activity and a durable response in patients with primary refractory AML, indicating its potential as an effective therapeutic option for this challenging patient population [12][19] Group 3: Clinical Data and Comparisons - A matching-adjusted indirect comparison (MAIC) analysis of olutasidenib versus ivosidenib in mIDH1 R/R AML showed comparable response rates, with olutasidenib favoring longer durations of CR [11] - Final results from the Phase 2 portion of the ARROW study in RET fusion-positive solid tumors other than NSCLC indicated an ORR of 46.4%, including a 100% ORR in pancreatic cancer [11] - The data validate RET fusions as a tissue-agnostic target, supporting the promising potential of pralsetinib to address unmet medical needs across various tumor types [11][12]