Not recommended for biologics; an Ames assay was conducted and was negative
“Genotoxicity assays are not recommended for biological therapeutics. An Ames assay was conducted, and results were negative.”
✓ VerifiedFDA pharmacology/toxicology review, p. 28Source ↗
Carcinogenicity
Not conducted; not feasible because ublituximab is not active in rodents
“Carcinogenicity studies were not required because ublituximab is not active in rodent; therefore, standard carcinogenicity studies are not feasible.”
✓ VerifiedFDA pharmacology/toxicology review, p. 2Source ↗
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 (0 or 30 mg/kg weekly by trimester): severe immunogenic response causing maternal morbidity, death and embryofetal loss
“Weekly intravenous administration of ublituximab-xiiy (0 or 30 mg/kg) to pregnant monkeys during the first, second, or third trimester of pregnancy produced a severe immunogenic response in dams, resulting in maternal morbidity and death and embryofetal loss.”
“Genotoxicity assays are not recommended for biological therapeutics. An Ames assay was conducted, and results were negative.”
✓ VerifiedFDA pharmacology/toxicology review, p. 28Source ↗
Genotox: in vitro mammalian
Not conducted (not recommended for biologics)
“Genotoxicity assays are not recommended for biological therapeutics. An Ames assay was conducted, and results were negative.”
✓ VerifiedFDA pharmacology/toxicology review, p. 28Source ↗
Genotox: in vivo
Not conducted (not recommended for biologics)
“Genotoxicity assays are not recommended for biological therapeutics. An Ames assay was conducted, and results were negative.”
✓ VerifiedFDA pharmacology/toxicology review, p. 28Source ↗
Carcinogenicity model
Not conducted: not feasible in monkey, inactive in rodents, 2-year bioassay poor predictor for immunosuppression
“For ublituximab, conventional carcinogenicity studies are not appropriate because carcinogenicity studies are not feasible in cynomolgus monkey, ublituximab is not pharmacologically active in rodents, and 2-year bioassay is a poor predictor of carcinogenicity risk associated with immunosuppression.”