Rat post-concussion and medication-overuse headache models; vasodilation models in rat and cynomolgus monkey
“Fremanezumab was tested in 2 rat models of headache (post-concussion headache and medication overuse headache) in which pain-related behaviors were measured after application of a presumed migraine stimulus.”
✓ VerifiedFDA pharmacology/toxicology review, p. 70Source ↗
Why that model
No complete animal model of migraine; vasodilation and pain models used instead
“No complete animal model of migraine is available. Restriction of blood flow via inhibition of CGRP after administration of fremanezumab was assessed in several animal models, including animal models of pain.”
FDA: models show modulation of CGRP activity, but relevance for predicting human migraine efficacy unknown
“These studies indicate that fremanezumab can modify presumed CGRP activity. How relevant these models are for predicting efficacy in human migraine is not known.”
✓ VerifiedFDA pharmacology/toxicology review, p. 70Source ↗