“In general, the adverse findings with the different proportions of cis:trans isomers of voclosporin were due to drug-related immunosuppression (e.g., thymic medullary atrophy, absence of germinal centers, lymphomas, decreased lymphocyte counts)”
✓ VerifiedFDA multi-discipline review, p. 39Source ↗
Biodistribution & persistence
Low distribution to eye; negligible melanin binding
“Drug-derived radioactivity distributed to the eye (target tissue) following oral administration of 14C-voclosporin, although at low levels. The distribution profile of drug-derived radioactivity was similar in pigmented and non-pigmented rats, suggesting negligible binding of the drug and/or its metabolites to melanin.”
✓ VerifiedFDA multi-discipline review, p. 525Source ↗
Modality-specific risk
Safety margins below 10x, with cyclosporine-like calcineurin-inhibitor toxicity
“Therefore, the safety margins are lower than the optimal 10x. However, the toxicological profile of voclosporin was similar to that of cyclosporine”
✓ VerifiedFDA multi-discipline review, p. 534Source ↗