Thymic lymphoid necrosis in high-dose rats (1-month study)
“Thymus: Very slight lymphoid necrosis in the thymus was observed in 3/10 HD males and moderate lymphoid necrosis was observed in 1/10 HD females.”
✓ VerifiedFDA multi-discipline review, p. 58Source ↗
Biodistribution & persistence
Extensive tissue distribution (large intestine, pituitary, bone marrow, liver); no radioactivity in brain/CNS
“Extensive distribution to tissues was observed with the highest concentrations in large intestine, pituitary gland, bone marrow, and liver followed by lung and kidney, minimal concentrations in male reproductive organs, and no detectable radioactivity in brain and CNS tissues.”
✓ VerifiedFDA multi-discipline review, p. 43Source ↗
Modality-specific risk
Embryofetal toxicity (rabbit malformations)
“Ibrexafungerp was associated with serious dose-related fetal malformations in rabbits at exposures 5- to 13-times the expected clinical exposure.”
✓ VerifiedFDA multi-discipline review, p. 44Source ↗