Evidence map›Paper›PMID 41807999›Full record

ArticleThe journal of headache and pain2026

Prescriber adherence to treatment guidelines for monoclonal antibodies against Calcitonin Gene-Related Peptide in migraine prophylaxis - a register-based cohort study.

Sofia Nordenmalm, Rickard E Malmström, Sara Freyland, A Ingela M Nilsson Remahl, Karin Wirdefeldt, Isabella Ekheden

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Article in The journal of headache and pain, 2026. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Not yet cited in PubMed.

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1 · What the graph read from it

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2 · The registry

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3 · Its place in the literature

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4 · The record

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5 · Who and what money

Authors and funding

6 authors.

Sofia NordenmalmDepartment of Medicine Solna, Division of Clinical Epidemiology, Karolinska Institutet, Stockholm, SE-171 76, Sweden. sofia.nordenmalm@ki.se.
Rickard E MalmströmDepartment of Medicine Solna, Division of Clinical Epidemiology, Karolinska Institutet, Stockholm, SE-171 76, Sweden.
Sara FreylandDepartment of Medicine Solna, Division of Clinical Epidemiology, Karolinska Institutet, Stockholm, SE-171 76, Sweden.
A Ingela M Nilsson RemahlDepartment of Clinical Neuroscience, Karolinska Institutet, Stockholm, SE-171 77, Sweden.
Karin Wirdefeldt *Department of Clinical Neuroscience, Karolinska Institutet, Stockholm, SE-171 77, Sweden.
Isabella Ekheden *Medical Diagnostics Karolinska, Clinical Pharmacology, Karolinska University Hospital, Stockholm, SE-171 64, Sweden.

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

backgroundCalcitonin Gene-Related Peptide targeting monoclonal antibodies (CGRP mAbs) were introduced for migraine prophylaxis in Sweden through the National Joint Introduction process to ensure an equal, cost-effective, and appropriate national use. This study aimed to assess prescriber adherence to treatment guidelines and evaluate patient treatment persistence during the national introduction of CGRP mAbs.

methodsIn this register-based cohort study, we followed individuals with a migraine diagnosis or dispensation of migraine drugs within Stockholm County from July 2018 to June 2022. We evaluated the guidelines for CGRP mAb treatment (erenumab, fremanezumab, or galcanezumab) according to four categories: 1) patient eligibility, 2) prescriber qualifications, 3) treatment evaluation, and 4) monitoring/reporting. We used a Sankey diagram to illustrate treatment switching and discontinuation patterns and employed boxplots along with Kaplan-Meier estimates to assess the persistence to CGRP mAbs.

resultsAmong 93,263 eligible individuals, 2266 (2%) had at least one CGRP mAb dispensation. Most (90%) had a prior migraine diagnosis at the first CGRP mAb dispensation, and 66% had been dispensed at least two prior prophylactic drugs against migraine. In nearly all cases (97%), CGRP mAb prescriptions were issued by neurology or headache specialists. Switching between CGRP mAbs was common and treatment persistence declined across successive sequences. Overall median treatment duration was 5.8 months (interquartile range: 2.8–11.9 months) and was longer for erenumab than fremanezumab and galcanezumab in sequence 1, but not in sequence 2. Kaplan–Meier analysis revealed a 12-month persistence of 58% in sequence 1, 53% in sequence 2, and 46% in sequence 3. A higher persistence was observed for fremanezumab and galcanezumab compared with erenumab in sequence 1, while estimates were similar in sequence 2.

conclusionPrescribers within Stockholm County adhere well to CGRP mAb treatment guidelines, with dispensations largely supported by a sound medical rationale, indicating appropriate integration into clinical practice. Guidance on switching between CGRP mAbs is limited and our findings show frequent switching and reduced persistence across sequences. These insights can help clinicians avoid unnecessary switches and optimize migraine care and resource use.

Indexed as

Antibodies, MonoclonalAntibodies, Monoclonal, HumanizedCalcitonin Gene-Related PeptideCalcitonin Gene-Related Peptide Receptor AntagonistsGuideline AdherenceMigraine DisordersPractice Patterns, Physicians'AdultCohort StudiesFemaleHumansMaleMiddle AgedPractice Guidelines as TopicRegistriesSwedenAntibodies, MonoclonalAntibodies, Monoclonal, HumanizedCalcitonin Gene-Related PeptideCalcitonin Gene-Related Peptide Receptor AntagonistserenumabfremanezumabgalcanezumabAntibodies, monoclonalCalcitonin gene-related peptideCalcitonin gene-related peptide receptor antagonistsDrug prescriptionsManaged care programsMigraine disordersNeurologistsPractice guidelines as topicPractice patterns, physicians’Sweden

Identifiers

PMID41807999
PMCPMC12983619

What Socratic holds

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LicenceCC BY
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Registered trials

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Read under generation 80e0d062 · epoch 390. Bibliography from PubMed, PubMed Central and OpenAlex; grants from NIH RePORTER; trial links from ClinicalTrials.gov; estimates, votes and beliefs from the Socratic graph.