Decreased thymus weight at the high dose in the rat fertility study
“Absolute and relative thymus weight was decreased at the high dose.”
✓ VerifiedFDA pharmacology/toxicology review, p. 63Source ↗
Biodistribution & persistence
Rat radiolabel: brain and fetal levels much lower than plasma; no brain radioactivity after repeat dosing
“Radioactivity levels in the brain and fetuses were much lower than that of plasma; drug-related radioactivity was not observed in the brain after repeat dosing.”
✓ VerifiedFDA pharmacology/toxicology review, p. 20Source ↗
Modality-specific risk
Potential carcinogenic impurity identified in drug product batches
“a potential carcinogenic impurity, was identified in drug product batches tested at the request of the Agency’s quality review team.”
✓ VerifiedFDA pharmacology/toxicology review, p. 12Source ↗