“No genotoxicity studies have been conducted per ICH S6 and ICH S9 guidelines.”
✓ VerifiedFDA multi-discipline review, p. 66Source ↗
Carcinogenicity
Not conducted (advanced cancer, ICH S9)
“No carcinogenicity studies have been conducted. Zolbetuximab. is intended for the treatment of patients with advanced cancer in the scope of the ICH S9.”
✓ VerifiedFDA multi-discipline review, p. 66Source ↗
Instead of carcinogenicity
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.
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
Mouse EFD (IV during organogenesis): no embryo-fetal toxicity up to 300 mg/kg (about 1.9 times clinical AUC)
“In an embryo-fetal development toxicity study, zolbetuximab was intravenously administered to pregnant mice during the period of organogenesis and did not result in embryo-fetal toxicity at doses up to 300 mg/kg (approximately 1.9 times the recommended clinical dose based on AUC).”
✓ VerifiedFDA multi-discipline review, p. 53Source ↗
Safety pharmacology
No CNS effects in mouse Irwin test at 100 mg/kg; no cardiovascular or respiratory effects in the 4-week monkey study up to 100 mg/kg
“In safety pharmacology studies with 100 mg/kg zolbetuximab, there were no CNS effects noted by Irwin’s test in mice. No cardiovascular or respiratory effects were observed in monkeys (Study 22337) at the highest dose of zolbetuximab (100 mg/kg) after once weekly IV administration for 4 weeks (5 doses in total).”
✓ VerifiedFDA multi-discipline review, p. 52Source ↗
Genotox: Ames
Not conducted (ICH S6)
“In line with ICH S6(R1), genotoxicity studies are not warranted for mAbs.”
Not conducted (monoclonal antibody, advanced cancer population)
“No genotoxicity or carcinogenicity studies are warranted given the structure of zolbetuximab (monoclonal antibody) and the patient population (advanced cancer).”
“No genotoxicity or carcinogenicity studies are warranted given the structure of zolbetuximab (monoclonal antibody) and the patient population (advanced cancer).”
No cardiovascular effects in 4-week monkey study up to 100 mg/kg
“No cardiovascular or respiratory effects were observed in monkeys (Study 22337) at the highest dose of zolbetuximab (100 mg/kg) after once weekly IV administration for 4 weeks (5 doses in total).”
✓ VerifiedFDA multi-discipline review, p. 52Source ↗