Bone marrow lymphoid hyperplasia in 52-week monkey study, persisting after recovery at high dose
“Lymphoid hyperplasia of bone marrow was seen at the end of the treatment period in the MD and HD groups and was still present after the recovery period at the HD.”
✓ VerifiedFDA pharmacology/toxicology review, p. 8Source ↗
Biodistribution & persistence
Rat: wide distribution incl. brain (tissue/blood ratios ~1); highest in kidney (4.7) and liver (2.7)
“Tissue distribution of [14C]-CBM in male S-D rats following a single oral dose showed the highest tissue-to-blood ratios in kidney (4.7) and liver (2.7), with most ratios (including brain) around 1.”
✓ VerifiedFDA pharmacology/toxicology review, p. 13Source ↗
Modality-specific risk
Dose-limiting acute neurotoxicity with minimal safety margins
“In all toxicology species, acute neurotoxicity was dose-limiting and resulted in minimal to no safety margins to clinical exposures (see Table 2 under section 5 below).”
✓ VerifiedFDA pharmacology/toxicology review, p. 7Source ↗