Not conducted; carcinogenicity risk assessment accepted, rodent studies not warranted
“A carcinogenicity risk assessment was submitted by the applicant, which was reviewed under the IND. Rodent carcinogenicity studies were deemed not to be warranted to establish an adequate assessment of carcinogenicity risk for sibeprenlimab.”
Monkey ePPND (101 mg/kg SC every 2 weeks, GD 20 to delivery): no adverse embryofetal or postnatal effects
“subcutaneous administration of sibeprenlimab once every 2 weeks to pregnant cynomolgus monkeys from gestation Day 20 through delivery did not result in any adverse effects on embryofetal or postnatal development at one tested dose of 101 mg/kg”
Incorporated into GLP repeat-dose monkey studies; no neurological, cardiovascular, ECG or respiratory effects
“No adverse effects related to sibeprenlimab were observed in qualitative neurological assessments, and there were no significant effects on heart rate, blood pressure, electrocardiogram parameters, or on respiratory function at any dose levels tested.”