Rodent models of antipsychotic activity: head twitch, conditioned avoidance, amphetamine-induced hyperlocomotion
“Lumateperone displayed in vivo functional activity in several rodent models of antipsychotic activity including 5-HT2 receptor agonist-induced head twitch in rats and mice (study Nos. ITI DPI001 & ITI-007 INT IC200131, Inhibition of DOI-Induced Head Twitch), conditioned avoidance response (study No. ITI DPI002), and inhibition of amphetamine-induced hyperlocomotion in rats”
✓ VerifiedFDA multi-discipline review, p. 54Source ↗
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
Data support postsynaptic D2 antagonism but are insufficient to establish presynaptic D2 antagonist or partial agonist activity
“In conclusion, the in vitro and in vivo data indicate that lumateperone is a postsynaptic D2 receptor antagonist; however, they do not provide enough evidence to establish antagonist or partial agonist activity at presynaptic D2 receptors.”
✓ VerifiedFDA multi-discipline review, p. 54Source ↗