“Thus, mutagenicity studies are considered inappropriate and were not conducted.”
✓ VerifiedFDA multi-discipline review, p. 45Source ↗
Carcinogenicity
Not conducted (ICH S9; advanced cancer, no mechanistic concern)
“Thus, given the intended patient population and lack of mechanistic concern, carcinogenicity studies are not planned with zanidatamab (ICH S9)”
✓ VerifiedFDA multi-discipline review, p. 46Source ↗
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
Not conducted; weight-of-evidence, HER2 antibody class embryo-fetal toxicant (oligohydramnios)
“Consequently, the conduct of de novo developmental and reproductive toxicity (DART) studies is not warranted for zanidatamab.”
✓ VerifiedFDA multi-discipline review, p. 46Source ↗
Safety pharmacology
Incorporated into 13-week monkey study (CV, respiratory, CNS); no effects
“Stand-alone safety pharmacology studies were not performed; however, appropriate safety assessments were included in the 13- week repeat-dose toxicology study”
✓ VerifiedFDA multi-discipline review, p. 40Source ↗
Genotox: Ames
Not conducted (ICH S6(R1), ICH S9)
“Thus, mutagenicity studies are considered inappropriate and were not conducted.”
✓ VerifiedFDA multi-discipline review, p. 45Source ↗
Genotox: in vitro mammalian
Not conducted (ICH S6(R1), ICH S9)
“Thus, mutagenicity studies are considered inappropriate and were not conducted.”
✓ VerifiedFDA multi-discipline review, p. 45Source ↗
Genotox: in vivo
Not conducted (ICH S6(R1), ICH S9)
“Thus, mutagenicity studies are considered inappropriate and were not conducted.”
✓ VerifiedFDA multi-discipline review, p. 45Source ↗
Carcinogenicity model
Not conducted (ICH S9; advanced cancer, no mechanistic concern)
“Thus, given the intended patient population and lack of mechanistic concern, carcinogenicity studies are not planned with zanidatamab (ICH S9)”
✓ VerifiedFDA multi-discipline review, p. 46Source ↗
Carcinogenicity timing
Not required; FDA: carcinogenicity studies not warranted
“Carcinogenicity studies were not warranted.”
✓ VerifiedFDA multi-discipline review, p. 46Source ↗
hERG / QT
No hERG assay; no cardiovascular effects in 13-week monkey study
“No test article-related adverse events were found in cardiovascular, respiratory, or central nervous system assessments.”
✓ VerifiedFDA multi-discipline review, p. 40Source ↗