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 ↗
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
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 ↗
Genotox: Ames
Not conducted (antibody unable to interact with genetic material)
“Genotoxicity studies of aducanumab were not conducted because antibodies are generally unable to interact with genetic material.”
✓ VerifiedFDA pharmacology/toxicology review, p. 48Source ↗
Genotox: in vitro mammalian
Not conducted (antibody unable to interact with genetic material)
“Genotoxicity studies of aducanumab were not conducted because antibodies are generally unable to interact with genetic material.”
✓ VerifiedFDA pharmacology/toxicology review, p. 48Source ↗
Genotox: in vivo
Not conducted (antibody unable to interact with genetic material)
“Genotoxicity studies of aducanumab were not conducted because antibodies are generally unable to interact with genetic material.”
✓ VerifiedFDA pharmacology/toxicology review, p. 48Source ↗
Carcinogenicity model
Not conducted; rat and mouse not pharmacologically relevant species
“Carcinogenicity studies of aducanumab were not conducted because rat and mouse are not pharmacologically relevant species.”
✓ VerifiedFDA pharmacology/toxicology review, p. 48Source ↗
Carcinogenicity timing
Not required: Division and Executive Carcinogenicity Assessment Committee agreed to the justification
“The Division and the Executive Carcinogenicity Assessment Committee agreed (September 11, 2015) with the sponsor’s justification for not conducting carcinogenicity studies of aducanumab.”
✓ VerifiedFDA pharmacology/toxicology review, p. 13Source ↗
hERG / QT
No hERG; no adverse ECG effects in 4-week monkey study
“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 ↗