Conducted: Ames, in vitro chromosomal aberration (TK6), in vivo mouse micronucleus; not genotoxic
“Plozasiran was not genotoxic when tested in the in vitro bacterial mutation (Ames) assay, in vitro chromosomal aberration assay in cultured TK6 lymphoblastoid cells, and in vivo micronucleus assay in mice.”
Conducted: 26-week Tg.rasH2 mouse negative; 2-year rat study ongoing
“In the 26-week study in Tg.rasH2 mice, administration of plozasiran by the SC route Q8W up to 120 mg/kg (~50-fold clinical dose, based on AUC) did not increase the incidence of tumors in male or female mice.”