Reni Benjamin's questions to Allogene Therapeutics (ALLO) leadership • Q2 2025
Question
Reni Benjamin of Citizens Capital Markets asked for the rationale behind using a cyclophosphamide-only regimen for ALLO-329 in autoimmune disease and what proof-of-concept data would be needed for a go/no-go decision.
Answer
CEO Dr. David Chang explained the choice was driven by a better benefit-risk profile, as removing fludarabine improves safety and cyclophosphamide is familiar to rheumatologists. For proof-of-concept, he cited key biomarkers like the degree of B-cell depletion, phenotype of returning B-cells, and disappearance of autoantibodies, which would precede ultimate clinical response data.