“Genotoxicity studies are not considered relevant for a biological product in accordance with ICH S6.”
✓ VerifiedFDA multi-discipline review, p. 42Source ↗
Carcinogenicity
Not conducted; weight-of-evidence risk assessment concluded low carcinogenic risk
“Instead, a comprehensive risk assessment including feasibility assessment of available animal models for carcinogenicity testing was performed. Based on the weight of evidence the risk of carcinogenicity can be considered low.”
Not reported in the public reviews. Reviewers summarise selectively, so this usually means it wasn't discussed publicly, not that it wasn't studied.
Instead of genotoxicity
Not stated in public reviews
Not reported in the public reviews. Reviewers summarise selectively, so this usually means it wasn't discussed publicly, not that it wasn't studied.
DRG histopathology
Not stated in public reviews
Not reported in the public reviews. Reviewers summarise selectively, so this usually means it wasn't discussed publicly, not that it wasn't studied.
Reproductive & developmental
Monkey ePPND (IV, organogenesis to delivery): non-dose-related increased fetal loss (abortions/stillbirths) at ~2.8x clinical exposure
“In an animal reproduction study, intravenous administration of crizanlizumab-tmca to pregnant cynomolgus monkeys from the onset of organogenesis through delivery resulted in a non-dose related increased fetal loss (abortions/stillbirths) at doses approximately 2.8 times the exposure at the recommended clinical dose at 5 mg/kg/dose once every 4 weeks”
“Genotoxicity studies are not considered relevant for a biological product in accordance with ICH S6.”
✓ VerifiedFDA multi-discipline review, p. 42Source ↗
Genotox: in vitro mammalian
Not conducted (ICH S6)
“Genotoxicity studies are not considered relevant for a biological product in accordance with ICH S6.”
✓ VerifiedFDA multi-discipline review, p. 42Source ↗
Genotox: in vivo
Not conducted (ICH S6)
“Genotoxicity studies are not considered relevant for a biological product in accordance with ICH S6.”
✓ VerifiedFDA multi-discipline review, p. 42Source ↗
Carcinogenicity model
Not conducted; carcinogenicity waiver requested from FDA in 2017
“The Applicant submitted a waiver request to conduct carcinogenicity studies for crizanlizumab to the FDA in 2017.”
✓ VerifiedFDA multi-discipline review, p. 42Source ↗
Carcinogenicity timing
Not required: FDA carcinogenicity committee concurred with waiver (no binding/activity in rodents)
“4. The executive carcinogenicity assessment committee at the FDA concurred with the Applicant’s plan based on lack of binding/pharmacologic activity in rodents.”
✓ VerifiedFDA multi-discipline review, p. 43Source ↗
hERG / QT
No hERG; safety pharmacology in monkey repeat-dose studies: no cardiovascular, CNS or respiratory effects
“No effects on cardiovascular, CNS or respiratory function were observed in Cynomolgus monkeys in the 26-week repeat-dose toxicity study.”