Key clinical point: The introduction of calcitonin gene-related peptide (CGRP) monoclonal antibodies (mAb) has led to a reduction in the prescription of other oral preventive therapies for chronic migraine, likely due to the similar efficacy and better safety profile of CGRP mAb.
Major finding: Overall, the percentage of commonly prescribed preventive medications reduced significantly from 46.3% before the introduction of CGRP mAb to 43.1% post introduction ( P = .001), including a large decrease in the prescription of verapamil, tricyclic antidepressants, topiramate, onabotulinumtoxinA, valproate, duloxetine, memantine, and propranolol (all P < .05).
Study details: This retrospective cohort study compared the percentage of patients with chronic migraine who were prescribed oral preventive medications or onabotulinumtoxinA during the CGRP mAb pre-approval period (2015-2017; n = 3144) and post-approval period (2019-2021; n = 4629).
Disclosures: This study did not receive any funding. The authors declared no conflicts of interest.
Source: Moskatel LS et al. The introduction of the CGRP monoclonal antibodies and their effect on the prescription patterns of chronic migraine preventive medications in a tertiary headache center: A retrospective, observational analysis. Headache. 2023 (Oct 26). doi: 10.1111/head.14642