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ArticleDrugs - real world outcomes2026

Three-Year Interim Results from a Post-Marketing Surveillance Study of Patients with Migraine Treated with Fremanezumab in South Korea.

Dayoung Seo, Manho Kim, Mi Ji Lee, Min Kyung Chu, Soo-Jin Cho, Heui-Soo Moon, Tae-Jin Song, Soohyun Cho, Byung-Kun Kim, Gabriela Kivelevitch

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Article in Drugs - real world outcomes, 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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5 · Who and what money

Authors and funding

10 authors.

Dayoung SeoTeva-Handok Pharma Co., Ltd, Seoul, South Korea.
Manho KimDepartment of Neurology, Seoul National University Hospital, Seoul, South Korea.
Mi Ji LeeDepartment of Neurology, Seoul National University Hospital, Seoul, South Korea.
Min Kyung ChuDepartment of Neurology, Yonsei University Severance Hospital, Seoul, South Korea.
Soo-Jin ChoDepartment of Neurology, Hallym University Dongtan Sacred Heart Hospital, Hwaseong, South Korea.
Heui-Soo MoonDepartment of Neurology, Sungkyunkwan University School of Medicine Kangbuk Samsung Hospital, Seoul, South Korea.
Tae-Jin SongDepartment of Neurology, Seoul Hospital, Ewha Womans University College of Medicine, Seoul, South Korea.
Soohyun ChoUijeongbu Eulji Medical Center, Eulji University, Uijeongbu, South Korea.
Byung-Kun KimDepartment of Neurology, Nowon Eulji Medical Center, 68 Hangeulbiseok-ro, Nowon-gu, Seoul, South Korea. kbk1403@eulji.ac.kr.
Gabriela KivelevitchTeva Pharmaceutical Industries Ltd, Tel Aviv, Israel.

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

backgroundThere is limited real-world evidence on the safety and effectiveness of fremanezumab in South Korea.

objectiveWe aimed to evaluate the safety and effectiveness of fremanezumab as a preventive migraine treatment in adults with migraine in real-life clinical practice in South Korea.

methodsA 6-year, non-interventional, prospective, post-marketing surveillance study conducted in up to 60 clinics and hospitals in South Korea from July 2021 to 2027. Eligible participants are aged ≥ 18 years, have a formal migraine diagnosis, and are receiving fremanezumab for the first time. The primary endpoint is the proportion of new adverse events, including serious adverse events, from first administration of fremanezumab to the 12-week observation period or discontinuation. Secondary endpoints include the mean change from baseline to week 12 in average monthly migraine days (MMD), proportion of participants achieving a ≥ 50% reduction in MMD, and the Patient Global Impression of Change (PGIC) scale at week 12. We present an interim analysis of data collected up to the third year of this study.

resultsAs part of the overall study, this 3-year interim analysis included data from 14 sites, with 1230 participants for safety and 1096 for effectiveness analyses (mean age: 46.1 years, standard deviation: 13.7; episodic/chronic migraine: 45.2%/54.8%; mean disease duration: 6.9 years [standard deviation 8.2]). Adverse events were reported by 17.6% of participants; the most common were injection-site reactions (5.7%); serious adverse events were infrequent (1.0%). After 12 weeks of treatment, mean change from baseline in MMD was - 7.8 ± 8.1 days (episodic migraine: - 3.4 ± 4.5 days, chronic migraine: - 11.4 ± 8.7 days), all p < 0.0001; 56.5% of participants (episodic migraine: 55.0%, chronic migraine: 57.7%) achieved a ≥ 50% reduction in MMD. Most participants (87.0%) rated treatment as effective on the PGIC scale.

conclusionsFremanezumab was well tolerated and effective for migraine prevention in Korean adults in a real-world setting. These results support the use of fremanezumab in routine clinical practice across South Korea.

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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.