Not applicable for a protein; Ames and in vitro chromosomal aberration assays negative
“Genetic toxicity studies were not applicable for this therapeutic biologic protein though reslizumab was negative in two in vitro assays.”
✓ VerifiedFDA pharmacology/toxicology review, p. 2Source ↗
Carcinogenicity
Tg.rasH2 transgenic mouse study up to 500 mg/kg IV every two weeks: no drug-related neoplasms
“A transgenic mouse (Tg.rasH2) carcinogenicity study was conducted with dose concurrence by the Executive Carcinogenicity Assessment Committee (ECAC). No drug-related neoplasms were found after dosing up to 500 mg/kg IV once every two weeks.”
✓ VerifiedFDA pharmacology/toxicology review, p. 2Source ↗
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
No effects on fertility or development up to 50 mg/kg IV; about 6-fold exposure margin in mouse studies
“No effects on fertility or development parameters were identified at doses up to 50 mg/kg IV; exposure margins of approximately 6-fold were available in the mouse studies.”
✓ VerifiedFDA pharmacology/toxicology review, p. 3Source ↗
Safety pharmacology
Rat and monkey studies at 100 and 25 mg/kg: no cardiovascular, CNS or gastrointestinal effects
“Reslizumab administered iv at a dose of 100 mg/kg (600 mg/m2) to rats (DS-2014-080) and 25 mg/kg (300 mg/m2) to monkeys (SN96333) did not elicit effects on the most important parameters related to organ functions (cardiovascular, CNS, or gastrointestinal).”
“Reslizumab tested negative in a bacterial mutagenicity (Ames) assay and a chromosomal aberration assay in cultured human lymphocytes.”
✓ VerifiedFDA pharmacology/toxicology review, p. 181Source ↗
Genotox: in vitro mammalian
Chromosomal aberration in cultured human lymphocytes: negative
“Reslizumab tested negative in a bacterial mutagenicity (Ames) assay and a chromosomal aberration assay in cultured human lymphocytes.”
✓ VerifiedFDA pharmacology/toxicology review, p. 181Source ↗
Genotox: in vivo
Not conducted; genetic toxicity studies not applicable for a therapeutic protein
“Genetic toxicity studies were not applicable for this therapeutic biologic protein though reslizumab was negative in two in vitro assays.”
✓ VerifiedFDA pharmacology/toxicology review, p. 2Source ↗
Carcinogenicity model
Tg.rasH2 mouse, 26 weeks, up to 500 mg/kg IV every two weeks; no drug-related neoplasms
“A transgenic mouse (Tg.rasH2) carcinogenicity study was conducted with dose concurrence by the Executive Carcinogenicity Assessment Committee (ECAC). No drug-related neoplasms were found after dosing up to 500 mg/kg IV once every two weeks.”
✓ VerifiedFDA pharmacology/toxicology review, p. 2Source ↗
Carcinogenicity timing
6-month Tg.rasH2 (HRAS transgenic) mouse study completed before the marketing application
“Carcinogenicity: A 6-month carcinogenicity study was conducted in HRAS transgenic mice, a confirmed pharmacologically relevant mouse strain.”
✓ VerifiedFDA pharmacology/toxicology review, p. 22Source ↗
hERG / QT
No hERG assay; no cardiovascular, CNS or GI effects in rat (100 mg/kg) and monkey (25 mg/kg) safety pharmacology
“Reslizumab administered iv at a dose of 100 mg/kg (600 mg/m2) to rats (DS-2014-080) and 25 mg/kg (300 mg/m2) to monkeys (SN96333) did not elicit effects on the most important parameters related to organ functions (cardiovascular, CNS, or gastrointestinal).”