Abstract
Objective
To determine whether erenumab is effective and safe in refractory chronic migraine with medication overuse headache.
Methods
In this prospective, multicentric, real-life study, chronic migraine with medication overuse headache patients who received erenumab were recruited. Study inclusion was limited to patients who previously failed onabotulinumtoxinA in addition to at least three other pharmacological commonly used migraine preventive medication classes.
Results
Of 396 patients who received erenumab, 38% (n = 149) met inclusion criteria. After 3 months, 51% (n = 76) and 20% (n = 30) patients achieved ≥ 50% and ≥ 75% reduction in monthly headache days, respectively. Monthly pain medications intake decreased from 46.1 ± 35.3 to 16.8 ± 13.9 (p < 0.001), while monthly headache days decreased from 25.4 ± 5.4 to 14.1 ± 8.6 (p < 0.001). Increasing efficacy of erenumab over the study period was observed. Allodynia was a negative predictive factor of erenumab response (odds ratio = 0.47; p = 0.03). Clinical conversion to episodic migraine with no medication overuse was observed in 64% (n = 96) patients. No serious adverse events were observed.
Conclusions
Erenumab reduced significantly migraine frequency and pain medication intake in refractory chronic migraine with MOH patients.
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Data availability
The authors take full responsibility for the data, the analysis, and interpretation of the research, and they have full access to all of the data.
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Acknowledgements
We would like to thank Cecilia Baroncini who edited the English text.
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UP and CB analyzed the data and drafted the manuscript; VF, MMC, PT, AP, DM, EM, SQ, GMA, PC, GP, SG, and SC acquired and analyzed data, and critically revised the manuscript. SC conceived and designed the study.
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The study was approved by an independent ethics committee or local institutional review board at each participating site, and written informed consent was obtained from all enrolled patients. All clinical investigations were conducted according to the latest version of the Declarations of Helsinki.
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Written informed consent was collected from the patients for the inclusion of deidentified clinical data in a scientific publication, in accordance with the Declaration of Helsinki.
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Conflict of interest
Carlo Baraldi and Simona Guerzoni received travel grants and honorary from Allergen, Novartis, Teva, and Ely Lilly. Maria Michela Cainazzo received travel grants and honorary from Allergen, Novartis, IBSA, and Ely Lilly. Sabina Cevoli received travel grants, honoraria for advisory boards, speaker panels, or clinical investigation studies from Novartis, Teva, Lilly, Allergan, Ibsa, and Lundbeck. Valentina Favoni received honoraria as a speaker or for participating in advisory boards from Ely-Lilly, Novartis, and Teva. The other authors declare that they have no competing interests.
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Pensato, U., Baraldi, C., Favoni, V. et al. Real-life assessment of erenumab in refractory chronic migraine with medication overuse headache. Neurol Sci 43, 1273–1280 (2022). https://doi.org/10.1007/s10072-021-05426-5
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DOI: https://doi.org/10.1007/s10072-021-05426-5