“No genotoxicity studies were performed with sutimlimab, as monoclonal antibodies are generally considered devoid of mutagenic or clastogenic risk.”
✓ VerifiedFDA pharmacology/toxicology review, p. 7Source ↗
Carcinogenicity
Not conducted; weight-of-evidence (no proliferative lesions in chronic monkey study, mechanism, literature): no significant tumorigenic potential; ECAC concurred
“Given the absence of proliferative lesions observed at either dose tested in the chronic monkey study and the lack of any identified tumorigenic risk based on the mechanism of action and a search of the relevant scientific literature, it is unlikely that sutimlimab possesses significant tumorigenic potential.”
✓ VerifiedFDA pharmacology/toxicology review, p. 7Source ↗
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
Monkey ePPND up to 180 mg/kg/week (~4x clinical exposure): no adverse reproductive or developmental effects; no dedicated fertility study
“There were no adverse effects on reproductive or developmental outcomes at 180 mg/kg/week, which represents 4 times the human exposure at the 7.5 g clinical dose.”
✓ VerifiedFDA pharmacology/toxicology review, p. 7Source ↗
Safety pharmacology
Incorporated into repeat-dose monkey study; no adverse cardiovascular, respiratory or CNS effects
“Safety pharmacology endpoints incorporated into the repeat-dose toxicology study in monkeys did not identify any sutimlimab-related adverse effects on cardiovascular, respiratory or central nervous system endpoints at either dose.”
✓ VerifiedFDA pharmacology/toxicology review, p. 6Source ↗
Genotox: Ames
Not conducted (monoclonal antibody, ICH S6)
“No genotoxicity studies were performed with sutimlimab, as monoclonal antibodies are generally considered devoid of mutagenic or clastogenic risk.”
✓ VerifiedFDA pharmacology/toxicology review, p. 7Source ↗
Genotox: in vitro mammalian
Not conducted (monoclonal antibody, ICH S6)
“No genotoxicity studies were performed with sutimlimab, as monoclonal antibodies are generally considered devoid of mutagenic or clastogenic risk.”
✓ VerifiedFDA pharmacology/toxicology review, p. 7Source ↗
Genotox: in vivo
Not conducted (monoclonal antibody, ICH S6)
“No genotoxicity studies were performed with sutimlimab, as monoclonal antibodies are generally considered devoid of mutagenic or clastogenic risk.”
✓ VerifiedFDA pharmacology/toxicology review, p. 7Source ↗
Carcinogenicity model
Not conducted; weight-of-evidence assessment (ICH S6)
“The applicant’s non-clinical package did not include a traditional in vivo carcinogenicity assessment. Instead, the applicant provided a weight-of-evidence (WOE)-based assessment of carcinogenic potential (per ICH S6).”
✓ VerifiedFDA pharmacology/toxicology review, p. 40Source ↗
Carcinogenicity timing
Not required; ECAC concurred no additional carcinogenicity studies warranted
“CDER’s Executive Carcinogenicity Assessment Committee concurred with this assessment, and no additional studies of the carcinogenic potential of sutimlimab are warranted at this time.”
✓ VerifiedFDA pharmacology/toxicology review, p. 7Source ↗
hERG / QT
No hERG assay; ECG, heart rate and respiration unremarkable in monkeys up to 180 mg/kg weekly for 26 weeks
“Cardiovascular and respiratory function testing included heart rate monitoring, body temperature, oxygen saturation, ECG testing and evaluation of respiration, which were unremarkable at doses up to 180 mg/kg weekly for 26 weeks”
✓ VerifiedFDA pharmacology/toxicology review, p. 38Source ↗