“Genotoxicity and stand-alone safety pharmacology studies were not conducted.”
✓ VerifiedFDA multi-discipline review, p. 35Source ↗
Carcinogenicity
Not conducted; weight-of-evidence (chronic surrogate study, literature, clinical data) found no concrete reason for concern; ECAC concurred
“there are no concrete reasons to believe that inhibition of IL36R by spesolimab would lead to carcinogenicity. The Executive Carcinogenicity Assessment committee (ECAC) concurred with this conclusion.”
✓ VerifiedFDA multi-discipline review, p. 36Source ↗
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 FEED, EFD and PPND with surrogate (up to 50 mg/kg): no adverse effects on fertility, embryofetal or postnatal development
“The maternal and developmental NOAELs were both 50 mg/kg/dose.”
✓ VerifiedFDA multi-discipline review, p. 36Source ↗
Safety pharmacology
No stand-alone or embedded studies; no respiratory or neurobehavioral signs in mouse studies up to 26 weeks
“However, no treatment-related organ toxicities or clinical signs indicative of respiratory or neurobehavioral effects were observed in mice after intravenous administration of the surrogate antibody BI 674304 for up to 26 weeks”
✓ VerifiedFDA multi-discipline review, p. 37Source ↗
Genotox: Ames
Not conducted (monoclonal antibody)
“No genotoxicity studies have been performed with spesolimab. This is considered acceptable as monoclonal antibodies are unlikely to interact directly with DNA or other chromosomal material (see SmPC section 5.3).”
“No genotoxicity studies have been performed with spesolimab. This is considered acceptable as monoclonal antibodies are unlikely to interact directly with DNA or other chromosomal material (see SmPC section 5.3).”
“No genotoxicity studies have been performed with spesolimab. This is considered acceptable as monoclonal antibodies are unlikely to interact directly with DNA or other chromosomal material (see SmPC section 5.3).”
Not conducted; weight-of-evidence (6-month surrogate mouse study, literature, clinical data)
“Regarding carcinogenesis, based on data from the 6-month general toxicity study of BI 674304 in mice, scientific literature on the potential role of IL36R in tumor promotion, and clinical data from spesolimab clinical trials, there are no concrete reasons to believe that inhibition of IL36R by spesolimab would lead to carcinogenicity.”
✓ VerifiedFDA multi-discipline review, p. 36Source ↗
Carcinogenicity timing
Not required; weight-of-evidence accepted, ECAC concurred
“there are no concrete reasons to believe that inhibition of IL36R by spesolimab would lead to carcinogenicity. The Executive Carcinogenicity Assessment committee (ECAC) concurred with this conclusion.”
✓ VerifiedFDA multi-discipline review, p. 36Source ↗
hERG / QT
Not conducted; no stand-alone or embedded safety pharmacology studies
“Stand-alone safety pharmacology studies were not conducted. Safety pharmacology studies were not embedded in the repeat-dose toxicity studies.”
✓ VerifiedFDA multi-discipline review, p. 37Source ↗