Relebactam negative in Ames, chromosomal aberration and rat bone marrow micronucleus assays
“Relebactam was shown to be negative for mutagenicity and/or clastogeniceffects in an Ames assay, a chromosomal aberration study, and in vivo in a rat bone marrow micronucleus assay.”
✓ VerifiedFDA multi-discipline review, p. 42Source ↗
Carcinogenicity
Not conducted (non-genotoxic, short treatment duration)
“In the absence of genotoxicity, and as the proposed treatment duration is relatively short, no carcinogenicity tests have been conducted.”
Mouse, rat and rabbit EFD: external/skeletal malformations (incl. cleft palate) in mice only; none in rats or rabbits
“In rats and rabbits, malformations and variations were not increased by relebactam above concurrent or historical control levels. However, in mice, increases in specificexternal and/or skeletal alterations were observed.”
✓ VerifiedFDA multi-discipline review, p. 42Source ↗
Safety pharmacology
Monkey telemetry: no effects on blood pressure, heart rate, ECG/QTc, respiration or body temperature
“No MK-7655-related changes compared to vehicle control values were observed for blood pressure measurements, heart rate, electrocardiogram parameters including QTc intervals, respiratory parameters, or body temperature.”
✓ VerifiedFDA multi-discipline review, p. 44Source ↗
Not genotoxic overall: Ames negative; in vitro chromosome aberration positive without (not with) metabolic activation; rat micronucleus and comet negative