Transgenic SCD mice given marrow cells transduced with a related βA-T87Q vector: βA-T87Q expression and correction of sickling
“In vivo POC studies were also conducted using transgenic mouse models of SCD, where murine bone marrow cells (mBMCs) were transduced with the βA-T87Q LVV, a related vector encoding the same transgene, and showed expression of βA-T87Q and correction of the sickling phenotype through 3 months post-transplantation.”
✓ VerifiedFDA summary basis for approval, p. 11Source ↗
Why that model
Not stated in public reviews
Not reported in the public reviews. Reviewers summarise selectively, so this usually means it wasn't discussed publicly, not that it wasn't studied.
Reviewer's view of the efficacy data
FDA: no nonclinical deficiencies; no further nonclinical data requested
“There are no nonclinical deficiencies identified in this submission. There are no outstanding requests for additional nonclinical data for evaluation of LYFGENIA™.”
✓ VerifiedFDA pharmacology/toxicology review, p. 3Source ↗
WAS-deficient mice transplanted with WAS LVV-transduced murine Lin- BM cells: increased B cells, platelets, granulocytes; improved T, B and DC function