“As ibalizumab is a biotechnology-derived protein product made of natural amino acids, and as per ICH S6(R1), genotoxicity studies are not applicable and therefore have not been conducted.”
Not conducted (no rodent CD4 binding); weight-of-evidence assessment concluded ibalizumab is not expected to be carcinogenic
“The conclusion of this report made by the applicant was that given the weight of evidence, ibalizumab is not expected to be carcinogenic. Standard 2-year carcinogenicity studies in rodents or 6-month studies in transgenic mice were not possible, because ibalizumab does not bind rodent CD4.”
No fertility/EFD studies; monkey ePPND: reversible infant CD4+ T- and B-cell decreases and CD8+ increases in first 4 weeks
“In a reproductive study in monkeys, reversible decreases in CD4+ T cells and B cells and increases in CD8+ T cells were observed within the first 4 weeks after birth in infants born to pregnant monkeys receiving ibalizumab-uiyk intravenously ( see Data ).”