Non-adverse, partially reversible thymus weight decrease with lymphoid depletion in male dogs
“Non-adverse, partially reversible decreases in thymus weights with corresponding microscopic findings of lymphoid depletion were observed in males only after treatment with OLZ, SAM, and the combination.”
✓ VerifiedFDA multi-discipline review, p. 447Source ↗
Biodistribution & persistence
Samidorphan highly distributed to tissues; binds melanin-containing tissues including skin and eyes
“SAM is highly distributed to tissues in rats and was found to bind to melanin-containing tissues including skin and eyes and is mainly excreted in urine in rats and dogs.”
✓ VerifiedFDA multi-discipline review, p. 445Source ↗
Modality-specific risk
Major human metabolite RDC-9986 acts as a partial opioid agonist in vivo
“In vivo rodent behavioral assays demonstrated that RDC-9986 functions as a partial opioid agonist.”
✓ VerifiedFDA multi-discipline review, p. 320Source ↗