Conducted; negative (Ames, CHO chromosomal aberration, mouse micronucleus)
“Eteplirsen was negative in a standard battery of genetic toxicology (Ames, in vitro chromosomal aberration in CHO, in vivo mouse micronucleus) assays.”
✓ VerifiedFDA pharmacology/toxicology review, p. 18Source ↗
Carcinogenicity
Not conducted pre-approval; Tg.rasH2 mouse and 2-year rat as PMRs (later negative per label)
“Carcinogenicity studies have not been conducted for eteplirsen. As agreed to by the division, carcinogenicity studies in two species would be conducted post approval as PMRs.”
✓ VerifiedFDA pharmacology/toxicology review, p. 18Source ↗
Reproductive & developmental
Not conducted (almost entirely male population); male reproductive organ histopathology in tox studies; juvenile rat study
“No developmental and reproductive toxicity studies were conducted with eteplirsen because the patient population is almost entirely male.”
✓ VerifiedFDA pharmacology/toxicology review, p. 2Source ↗
Safety pharmacology
Standalone telemetered monkey CV/respiratory/CNS study (SC and IV up to 320 mg/kg); no findings
“No toxicologically important effects were observed in a safety pharmacology study in cynomolgus monkeys given single injections of eteplirsen at up to 320 mg/kg SC or IV.”
✓ VerifiedFDA pharmacology/toxicology review, p. 89Source ↗