Reni Benjamin's questions to Allogene Therapeutics Inc (ALLO) leadership • Q2 2025
Question
Reni Benjamin asked for the rationale behind choosing a cyclophosphamide-only lymphodepletion regimen for the ALLO-329 autoimmune study and inquired about the proof-of-concept data needed to advance the program.
Answer
David Chang, CEO, explained the choice was based on the benefit-risk profile for autoimmune disease, as removing fludarabine improves safety and cyclophosphamide is familiar to rheumatologists. For proof-of-concept, he said they will look for deep B-cell depletion, the phenotype of returning B-cells, disappearance of autoantibodies, and ultimately, positive clinical responses.