No relevant species; nude rat pharmacology studies only, no tox
“Based on the acceptable clinical safety profile of RVT-802 and the lack of relevant animal species/models, no nonclinical toxicology studies with RVT-802 were performed.”
✓ VerifiedFDA pharmacology/toxicology review, p. 2Source ↗
Why that species
Nude rats used to model engraftment and thymopoiesis of allogeneic thymus; no relevant tox species
“Studies were conducted in nude rats to to identify potentially optimal culture conditions of allogeneic neonatal thymus that result in engraftment and development of an endogenous T cell population”
✓ VerifiedFDA pharmacology/toxicology review, p. 2Source ↗
Surrogate molecule
No surrogate; human product tested in athymic nude rats (pharmacology only)
“Allogeneic Thymus Transplantation in Nude Rats RVT-802-001”
✓ VerifiedFDA pharmacology/toxicology review, p. 4Source ↗
Species: general tox
None; no toxicology studies (no relevant animal species/models)
“Based on the acceptable clinical safety profile of RVT-802 and the lack of relevant animal species/models, no nonclinical toxicology studies with RVT-802 were performed.”
✓ VerifiedFDA pharmacology/toxicology review, p. 2Source ↗
Species: DART
Not conducted; published mouse thymectomy literature reviewed instead
“No DART studies were conducted. To assess the DART potential of RVT-802, the applicant examined published assessments of DART outcomes in mice following thymectomy.”
✓ VerifiedFDA pharmacology/toxicology review, p. 21Source ↗
Species: carcinogenicity
Not conducted; published mouse thymus-transplant literature reviewed instead
“No carcinogenicity/tumorigenicity studies were conducted. To assess the carcinogenicity/tumorigenicity potential of RVT-802, the applicant examined published assessments of carcinogenicity outcomes in mice following thymus transplantation.”
✓ VerifiedFDA pharmacology/toxicology review, p. 22Source ↗
Surrogate used in
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.