Chronic migraine: No synergistic effect with erenumab-onabotulinumtoxinA dual therapy

Key clinical point: Erenumab and onabotulinumtoxinA (onabotA) dual therapy appeared less effective than erenumab alone in patients with chronic migraine.

Major finding: After 12 weeks, patients who were taking onabotA while initiating erenumab and maintained it as dual therapy (WBT) vs those who received erenumab alone (NoBT) had a lower reduction in mean monthly headache days (MHD; 4.7 vs 8.21 days; P  =  .009) and lower mean percentage improvement in MHD (21.7% vs 35.0%; P  =  .001), with a similar trend being observed among patients who were on onabotA while initiating erenumab but discontinued onabotA (WoBT).

Study details: This retrospective cohort study included 187 patients with chronic migraine who received WBT (n = 73), WoBT (n = 44), or NoBT (n = 70).

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Disclosures: This study did not receive any specific funding. A Jaimes and J Rodríguez-Vico declared receiving honoraria or speaking fees from AbbVie and other sources.

Source: Jaimes A et al. Dual therapy with Erenumab and onabotulinumtoxinA: No synergistic effect in chronic migraine: A retrospective cohort study. Pain Pract. 2022 (Dec 12). Doi: 10.1111/papr.13196