Allogene Therapeutics Provides Updated Phase 1 Data Highlighting Durable Responses with ALLO-316 in Heavily Pretreated Advanced Renal Cell Carcinoma at ASCO

Core Insights - Allogene Therapeutics presented promising data for ALLO-316, an allogeneic CAR T product targeting CD70 in renal cell carcinoma (RCC), at the 2025 ASCO Annual Meeting [1][5] - The Phase 1 TRAVERSE study demonstrated that ALLO-316 can provide meaningful clinical benefits, including a confirmed overall response rate (ORR) of 31% in patients with CD70 positive tumors [3][5] Company Overview - Allogene Therapeutics is a clinical-stage biotechnology company focused on developing allogeneic CAR T products for cancer and autoimmune diseases [10] - The company utilizes proprietary Dagger technology to enhance CAR T cell expansion and efficacy [1][5] Clinical Trial Details - The Phase 1 TRAVERSE trial enrolled patients with advanced or metastatic RCC, with a focus on those who had failed multiple prior therapies [2][9] - In the Phase 1b expansion cohort, 22 patients were treated, with 20 receiving ALLO-316 after a standard lymphodepletion regimen [2][4] Efficacy Results - Among the 16 patients with CD70 Tumor Proportion Score (TPS) ≥50%, the trial showed a 31% confirmed ORR, with 44% achieving at least a 30% reduction in tumor burden [3][4] - Four out of five confirmed responders maintained ongoing responses, including one patient in sustained remission for over 12 months [3][5] Safety Profile - The safety profile of ALLO-316 was manageable, with the most common adverse events being hematologic, including neutropenia and anemia [6][7] - No treatment-related Grade 5 events were reported, and proactive management strategies effectively mitigated immune effector cell-associated neurotoxicity syndrome (ICANS) [6][8] Regulatory Designations - ALLO-316 received Regenerative Medicine Advanced Therapy (RMAT) designation from the FDA, highlighting its potential to address unmet needs in advanced RCC [9]