Ideaya Biosciences And Hengrui Pharma Presented Initial Data From Hengrui's Phase 1 Trial Of Ide849 (Shr-4849) At The IASLC 2025 World Conference On Lung Cancer

Author: Benzinga Newsdesk | September 07, 2025 12:21pm

• 80.0% (8/10) ORR and 70.0% (7/10) confirmed ORR in 2L SCLC; a 73.7% (14/19) ORR and 57.9% (11/19) confirmed ORR (1 pending confirmation) were observed across all lines of SCLC at the 2.4 mg/kg expansion dose of IDE849.
• 77.1% (27/35) ORR and 60.0% (21/35) confirmed ORR (4 pending confirmation) in 2L SCLC; a 73.2% (52/71) ORR and 47.9% (34/71) confirmed ORR (10 pending confirmation) were observed across all lines of SCLC at all expansion doses of IDE849.
• In patients with baseline brain metastases, a 83.3% (5/6) confirmed ORR at the 2.4 mg/kg dose was observed; across all doses ≥2.4 mg/kg (n=18), a 66.7% (12/18) confirmed ORR (1 pending confirmation) was observed
• 14.1% (10/71) of patients across all doses >2.4 mg/kg are still pending confirmation, as well as multiple patients that have had limited follow-up (e.g. one post-baseline scan) highlighting the study has not yet achieved a fully mature confirmed ORR%
• 6.7 month median progression free survival (PFS) across all lines of SCLC across all dose levels (≥2.4 mg/kg); mPFS not reached in 2L SCLC patients
• Manageable safety profile observed across multiple expansion cohorts, including the 2.4 mg/kg, 3.0 mg/kg, and 3.5 mg/kg dose levels with a once every 3-week dosing interval

Posted In: IDYA