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Electronic data capture (EDC) extract from the ongoing ACR-368 registrational-intent Phase 2b monotherapy trial in OncoSignature-positive (BM+) subjects with endometrial cancer (EC) showed 39% overall response rate (ORR) and 44% in subjects with ≤2 prior lines of therapy*
Analysis of data from all-comer subjects with serous subtype and ≤2 prior lines of therapy, a high unmet need population, showed a confirmed ORR (cORR) of 52%, and within BM+ subjects cORR was 67%, consistent with higher BM levels across serous subjects
Arm 3 is enrolling up to 90 subjects with serous subtype and ≤2 prior lines of therapy, without requirement for a tumor biopsy, for treatment with ACR-368 plus ultra-low dose gemcitabine (ULDG) as a tumor sensitizer and enrollment completion expected in fourth quarter 2026
Based on preclinical AP3 data showing strong synergy between ACR-368 and anti-PD-L1, company has submitted a Phase 3 confirmatory protocol to the FDA for ACR-368 plus anti-PD-1 therapy in frontline EC subjects; global trial readiness expected mid-2026
Initial data from Phase 1 dose escalation (N=33) for ACR-2316, a potential first-in-class WEE1/PKMYT1 inhibitor, showed favorable tolerability; two weekly oral dosing regimens (160 mg QD, 3d on/4d off and 240 mg QD, 2d on/5d off) established with a bi-weekly regimen initiated
Tumor shrinkage was observed at ≥120 mg dose level in 9/20 subjects, including a confirmed PR in EC, and unconfirmed PRs in SCLC and sqNSCLC, two tumor types predicted sensitive by AP3, not previously shown sensitive to WEE1 inhibitors in development
ACR-6840, a potential first-in-class AP3-derived oral CDK11 inhibitor, nominated as next preclinical development candidate, with IND submission planned for fourth quarter 2026
Company to hold video conference call and webcast today at 8:30 a.m. ET
WATERTOWN, Mass., Jan. 08, 2026 (GLOBE NEWSWIRE) -- Acrivon Therapeutics, Inc. (“Acrivon” or “Acrivon Therapeutics”) (Nasdaq: ACRV), a clinical stage biotechnology company discovering and developing precision medicines utilizing its proprietary Generative Phosphoproteomics AP3 (Acrivon Predictive Precision Proteomics) platform designed to interpret and quantify global compound-specific, drug-regulated effects in the intact cell which is deployed for rational drug design and predictive clinical development, today announced significant progress across its pipeline, including updates regarding the Phase 2 ACR-368 program, initial clinical data from the ACR-2316 Phase 1 study, and the nomination of Acrivon’s next AP3-enabled preclinical development candidate, ACR-6840, a potential first-in-class, oral CDK11 inhibitor.
“We are pleased with tangible progress accelerating across multiple high-value opportunities,” said Peter Blume-Jensen, M.D., Ph.D., chief executive officer, president, and co-founder of Acrivon. “We are particularly excited by the observation from our ongoing ACR-368 Phase 2 trial that subjects with serous endometrial cancer with up to two prior lines of therapy are showing over 50% confirmed response rate. This provides an attractive opportunity for rapid Arm 3 enrollment without the need for a pretreatment biopsy, both in the US and more than 20 newly selected sites in major EU countries, with anticipated enrollment completion in 2026. Given the high response rate we have observed, and that we intend to give all patients ULDG as a sensitizer for ACR-368, we believe the data from our ongoing study provide for a highly compelling clinical profile in this high unmet need patient population.”