4.5 Review

The ultimate guide to the anti-CGRP monoclonal antibodies galaxy

Journal

NEUROLOGICAL SCIENCES
Volume 43, Issue 9, Pages 5673-5685

Publisher

SPRINGER-VERLAG ITALIA SRL
DOI: 10.1007/s10072-022-06199-1

Keywords

Migraine; Calcitonin gene related peptide; CGRP; Cluster headache; Migraine treatment; Anti-CGRP monoclonal antibodies

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Anti-CGRP monoclonal antibodies have shown remarkable efficacy and safety in the treatment of migraines. Real-world studies have provided additional insights beyond clinical trials, confirming the effectiveness of these revolutionary medications.
Background Anti-CGRP monoclonal antibodies have represented a real revolution in the field of headaches, being the result of an extraordinary process of translation of new pathophysiological discoveries into successful therapies. Nonetheless, clinical practice is far more complex than pivotal trials setting, and real-world studies are blooming to deepen knowledge of these revolutionary medications. Objective To provide an updated guide for evidence-based clinical practice. Methods Pivotal phase 3 randomised clinical trials for each anti-CGRP(-R) monoclonal antibody were considered. We evaluated prospective real-world studies and summarised evidence on anti-CGRP mAbs use beyond episodic and chronic migraine. Results All phase 3 RCTs showed an unprecedented profile of efficacy and safety in migraine prevention for the four anti-CGRP mAbs. However, plenty of questions remained open after the approval process. Real-world studies filled the gap and effectiveness results equalled or unexpectedly outperformed RCTs figures in most cases; safety results showed a lower incidence of adverse events, but a higher frequency of reported constipation compared to RCTs. Almost all studies displayed a rapid and progressive headache worsening following treatment suspension. Several positive response predictors were suggested, such as unilateral pain, allodynia in episodic migraineurs, response to triptans, and a lower number of failed prophylaxes. Comparable effectiveness was observed in resistant/ refractory patients. In medication overuse headache patients, a clear clinical benefit was observed irrespective of any possible detoxification program. Conclusions Our narrative review restates the remarkable efficacy, effectiveness, and safety profile in both RCTs and realworld settings and provides scientific evidence for clinical practice.

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