In vitro ovicidal assay on resistant head lice eggs (SF-HL strain) with the lotion
“The ovicidal activity of the to-be-marketed formulation, abametapir lotion 0.74%, was investigated using three different developmental stages of a permethrin-and-DDT-resistant strain of head lice eggs”
✓ VerifiedFDA pharmacology/toxicology review, p. 23Source ↗
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
Metalloproteinase inhibition judged sufficient to kill lice based on in vitro and clinical data
“These data are consistent with abametapir being characterized as a broad spectrum metalloproteinase inhibitor of low potency. The extent of metalloproteinase inhibition exhibited by abametapir is sufficient to kill lice based on the in vitro and clinical study data available for abametapir.”
✓ VerifiedFDA pharmacology/toxicology review, p. 29Source ↗