Ovariectomized rat (postmenopause model): attenuated hot flash-like symptoms
“In vivo pharmacology studies demonstrated fezolinetant attenuated hot flash-like symptoms in ovariectomized (OVX) rats (a nonclinical model of postmenopause).”
✓ VerifiedFDA pharmacology/toxicology review, p. 18Source ↗
Why that model
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.
Reviewer's view of the efficacy data
EMA: proof-of-concept shown in rat OVX model with supporting NK3/MnPO mechanism
“The applicant showed proof-of-concept for fezolinetant induced reductions in vasomotor symptoms in a rat OVX model, and provided evidence for a molecular mechanism implicating fezolinetant as a hNK3 receptor antagonist that leads to reduced activity in the median preoptic nucleus, associated with temperature regulation.”