“Genetic toxicology studies were not needed to support the development and approval of risankizumab, per the ICH S6(R1) guidance.”
✓ VerifiedFDA multi-discipline review, p. 54Source ↗
Carcinogenicity
Not conducted; malignancy risk from long-term IL-23 inhibition considered low
“Overall the risk for malignancy associated with long-term inhibition of IL-23 following administration of risankizumab to humans is considered to be low.”
✓ VerifiedFDA multi-discipline review, p. 55Source ↗
Reproductive & developmental
Monkey ePPND: dose-dependent fetal/infant loss (19%, 32%, 43% in control, 5 and 50 mg/kg groups)
“However, as compared to the control group, a dose-dependent increase in fetal/infant loss was noted in the risankizumab-treated groups. The percent fetal/infant loss was 19%, 32%, and 43% in the vehicle control, 5 mg/kg, and 50 mg/kg groups, respectively.”
✓ VerifiedFDA multi-discipline review, p. 49Source ↗
Safety pharmacology
Assessed in 4-week IV monkey study; no neurological or cardiovascular effects up to 50 mg/kg/week
“Intravenous treatment with doses up to 50 mg/kg/week risankizumab for 4 weeks did not cause treatment-related effects on neurological or cardiovascular functions in Cynomolgus monkeys.”
✓ VerifiedFDA multi-discipline review, p. 51Source ↗