Antibodies targeting either the calcitonin gene-related peptide (CGRP), such as galcanezumab, fremanezumab, and eptinezumab, or the receptor (erenumab) have been approved for the prevention of episodic and chronic migraine. Although widely used and generally effective, a proportion of patients discontinue treatment due to lack of efficacy. In both randomized controlled trials and observational studies, all anti-CGRP monoclonal antibodies (mAbs) have consistently demonstrated comparable efficacy and tolerability, suggesting a pharmacological class effect. However, differences in therapeutic targets, structure, and pharmacokinetic characteristics may influence their efficacy and safety differently. Therefore, in patients not achieving a clinically meaningful response with one anti-CGRP antibody, switching to a different antibody may be a viable option. This review examines the pharmacological characteristics and distinctions among anti-CGRP mAbs, highlighting their mechanisms of action and pharmacokinetic profiles, along with the clinical observational data of switching. Finally, we summarize suggestions from international guidelines.
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Pharmacological differences and switching among anti-CGRP monoclonal antibodies: A narrative review.
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Section of Clinical Pharmacology and Oncology, Department of Health Sciences, University of Florence, Florence, Italy.
Antibodies targeting either the calcitonin gene-related peptide (CGRP), such as galcanezumab, fremanezumab, and eptinezumab, or the receptor (erenumab) have been approved for the prevention of episodic and chronic migraine. Although widely used and generally effective, a proportion of patients discontinue treatment due to lack of efficacy. In both randomized controlled trials and observational studies, all anti-CGRP monoclonal antibodies (mAbs) have consistently demonstrated comparable efficacy and tolerability, suggesting a pharmacological class effect.
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Department of Neurology, The David Geffen School of Medicine at UCLA, Los Angeles, USA.
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Multiple Sclerosis Center, Binaghi Hospital, ASL Cagliari, Italy; Department of Medical Sciences and Public Health, University of Cagliari, Italy.
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Importance: Monoclonal antibodies (mAbs) targeting calcitonin gene-related peptide (CGRP) or its receptor (anti-CGRP mAbs) offer effective migraine-specific preventive treatment. However, concerns exist about their potential cardiovascular risks due to CGRP blockade.
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Efficacy and Safety of Switching Between Anti-CGRP Monoclonal Antibodies: A Detailed Monthly and Long-term Follow-up Study and Literature Review.
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Department of Neurology, Keio University School of Medicine, Japan.
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