Dose-dependent lymphocyte decreases in rats and dogs; lymphoid depletion in rat lymph nodes and spleen (pharmacological)
“Dose-dependent decreases in circulating lymphocytes were observed in both rats and dogs and correlated with lymphoid depletion in the lymph nodes and spleen of rats only; these findings were attributed to the pharmacological activity of etrasimod and not considered adverse.”
✓ VerifiedFDA multi-discipline review, p. 42Source ↗
Biodistribution & persistence
Wide distribution incl. GI tract, liver, kidney, myocardium, adrenal, thyroid, brain and spinal cord
“[14C]etrasimod distributed to tissues of GI tract, organs of clearance (kidney and liver), myocardium, secretory glands (adrenal and thyroid), and the non-circumventricular central nervous system tissues (spinal cord and brain) in non-pigmented and pigmented rats.”