No nonclinical basis; Phase 1/2 clinical safety data with a similar product supported the Phase 1b dose levels
“This omission is acceptable, as the applicant provided safety data from a Phase 1/2 clinical study with a similar clinical product to support initiation of the Phase 1b study”
✓ VerifiedFDA pharmacology/toxicology review, p. 36Source ↗
NOAEL / key findings
No NOAEL; no tox studies; in mice Tcons alone caused dose-dependent GVHD with T-cell infiltration of liver and intestine, attenuated by Tregs
“Histopathological examination revealed dose-dependent T cell infiltration in hepatic periportal regions and parenchyma, thickening of intestinal lamina propria, and atrophy of subcutaneous fat and hair follicles”
✓ VerifiedFDA pharmacology/toxicology review, p. 35Source ↗