Not conducted; antibodies unable to interact with genetic material
“No genotoxicity studies of aducanumab were conducted because antibodies are generally unable to interact with genetic material.”
✓ VerifiedFDA pharmacology/toxicology review, p. 34Source ↗
Carcinogenicity
Not conducted (target absent in wild-type rodents); no proliferative lesions in monkey or Tg2576 studies; FDA agreed
“Carcinogenicity studies of aducanumab were not conducted because its target, aggregated Aβ, is not present in wild-type rodents. No increases in the incidence or severity of proliferative lesions were observed in the 4-week study in monkey or the 13- or 26-week studies in aged Tg2576 mouse.”
✓ VerifiedFDA pharmacology/toxicology review, p. 34Source ↗
Reproductive & developmental
Rat fertility, embryo-fetal and pre/postnatal studies (up to 1000 mg/kg/week IV): no adverse effects; rat of limited relevance
“There were no adverse effects on fertility and early embryonic development, embryofetal development, or pre- and postnatal development in studies of aducanumab (0, 100, 300, and 1000 mg/kg/week IV) conducted in rat.”
✓ VerifiedFDA pharmacology/toxicology review, p. 7Source ↗
Safety pharmacology
Incorporated into monkey and Tg2576 toxicity studies; no ECG, CNS or pulmonary effects
“Safety pharmacology was assessed in the pivotal toxicology studies of aducanumab in cynomolgus monkeys and of aducanumab and ch12F6A in aged Tg2576 mice. There were no adverse effects on ECG in the 4-week monkey study or on CNS- or pulmonary-related clinical signs in either species.”
✓ VerifiedFDA pharmacology/toxicology review, p. 23Source ↗