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CompletedNCT05064371Updated Jan 14, 2026

Long-Term Extension Study With Eptinezumab as Preventive Treatment in Participants With Migraine in Japan

A Phase 3 interventional study of Eptinezumab in Migraine, sponsored by H. Lundbeck A/S. Completed at 17 sites in Japan. Open to participants aged 18 Years to 75 Years. Per ClinicalTrials.gov, last updated 2026-01-14.

Sponsored by H. Lundbeck A/S · Phase 3, Interventional, and Treatment

Phase
Phase 3
Study type
Interventional
Enrollment
160
Allocation
Not applicable
Ages
18 Years to 75 Years
Sex
All
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Study summary

This study is an open label extension study, which means that the participants from the Lead-in Study 19140A (NCT04921384) can join this study, if they meet the study Eligibility Criteria, and continue to receive the study drug eptinezumab. The main goal of this study is to investigate long-term safety and tolerability of eptinezumab in Japanese migraine participants.

Read the detailed description

The total study duration from the Baseline Visit to the Safety Follow-up Visit is approximately 68 weeks and includes an Open-Label Treatment Period (60 weeks) and a Safety Follow-up Period (8 weeks).

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Conditions studied

  • Migraine

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03

In context

Migraine Disorders

1,528 studies on the registry are indexed under Migraine Disorders; 299 are open to participants now.

This study's enrollment of 160 is above the median of 80 across 1,175 interventional studies indexed under Migraine Disorders.

Browse Migraine Disorders studies →

Lead sponsor

H. Lundbeck A/S is the lead sponsor of 218 studies on the registry; 10 are open to participants now.

Of its 33 completed or terminated interventional studies of FDA-regulated products, 10 (30%) have results posted.

Counted across the registry records on this site, refreshed daily.

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Who can participate

Ages eligible
18 Years to 75 Years
Sexes eligible
All
Accepts healthy volunteers
No

Eligibility criteria

Key Inclusion Criteria:

  • The participant has completed the Primary Outcome Visit (Visit 5) of the lead-in Study 19140A immediately prior to enrolment into this study.
  • The participant is indicated for 60-week preventive treatment of chronic migraine with eptinezumab according to the clinical opinion of the investigator.

Key Exclusion Criteria:

  • The participant has a serious adverse event (SAE) or a moderate or severe ongoing AE from the Lead-In study considered a potential safety risk by the investigator.
  • The participant has a clinically relevant change in vital signs or electrocardiogram (ECG) from the Lead-In study considered a potential safety risk by the investigator.
  • The participant has a disease or takes medication that could, in the investigator's opinion, interfere with the assessments of safety, tolerability, or efficacy, or interfere with the conduct or interpretation of the study.

Other inclusion and exclusion criteria may apply.

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Study design

Phase
Phase 3
Primary purpose
Treatment
Allocation
Not applicable
Intervention model
Single group
Masking
None (open label)
Enrollment
160 participants (actual)

Study arms

  • Experimental
    Eptinezumab

    Participants will receive eptinezumab 100 milligrams (mg) at the Baseline visit (Week 0) and eptinezumab 100 mg or 300 mg (depending upon the treatment response) at Weeks 12, 24, 36, and 48 by intravenous (IV) infusions.

    Drug: Eptinezumab

Interventions

  • DrugEptinezumab

    Concentrate for solution for IV infusion

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What researchers measure

Primary outcomes

  1. Number of Participants With Adverse Events (AEs)

    Time frame: From Baseline to Week 68

Secondary outcomes

  1. Change From Baseline in the Number of Monthly Migraine Days

    Time frame: Baseline, Week 60

  2. Response: Number of Participants With ≥50% Reduction From Baseline in Monthly Migraine Days (MMDs)

    Time frame: Baseline to Week 60

  3. Change From Baseline in the Headache Impact Test (HIT-6) Score

    Time frame: Baseline, Week 60

  4. Change From Baseline in the Health-Related Quality of Life (EQ-5D-5L) Visual Analogue Scale (VAS) Score

    Time frame: Baseline, Week 60

  5. Patient Global Impression of Change (PGIC) Score

    Time frame: Baseline to Week 60

  6. Change From Baseline in the Most Bothersome Symptom (MBS) Score

    Time frame: Baseline, Week 60

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Study locations

17 sites
  • DOI Clinic Internal Medicine
    Hiroshima-Shi Naka-Ku, Hiroshima 730-0031, Japan
  • Jinnouchi Neurosurgery Clinic
    Kasuga-Shi, Hukuoka 816-0802, Japan
  • Ikeda Neurosurgical Clinic
    Kasuga-Shi, Hukuoka 816-0824, Japan
  • Mito Kyodo General Hospital
    Mito, Ibaraki 310-0015, Japan
  • Iwate Medical University Uchimaru Medical Center
    Morioka, Iwate 020-0023, Japan
  • Atsuchi Neurosurgery Hospital
    Kagoshima, Kagoshima-ken 892-0842, Japan
  • Shin Matsudakai Atago Hospital
    Kochi, Kôti 780-0051, Japan
  • Sendai Headache and Cranial Nerves Clinic
    Sendai-Shi Taihaku-Ku, Miyagi 982-0014, Japan
  • Saitama Neuropsychiatric Institute
    Saitama-Shi, Saitama 338-8577, Japan
  • Moriyama Neurological Center Hospital
    Edogawa-Ku, Tokyo 134-0085, Japan
  • Tokyo headache clinic
    Shibuya-Ku, Tokyo 151-0051, Japan
  • Nagamitsu Clinic
    Hofu-Shi, Yamaguchi 747-0802, Japan
  • Tatsuoka Neurology Clinic
    Kyoto Shimojo-ku, 680-8811, Japan
  • Dokkyo Medical University Hospital
    Mibu-machi, 321-0293, Japan
  • Japanese Red Cross Shizuoka Hospital
    Shizuoka, 420-0853, Japan
  • Toyota Memorial Hospital
    Toyota-shi, 471-8513, Japan
  • Tominaga Hospital
    Osaka, Ã"saka 556-0017, Japan
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References and documents

Publications

  • Takeshima T, Danno D, Imai N, Suzuki K, Ettrup A, Jensen S, Josiassen MK, Mittoux A, Matsumori Y. Long-term tolerability and effectiveness of eptinezumab in Japanese adults with chronic migraine: results of the 60-week open-label SUNSET trial. J Headache Pain. 2025 Nov 22;26(1):275. doi: 10.1186/s10194-025-02214-w. PubMed 41275111 ↗
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Updates

Tracking since Sep 25, 2026
No changes since tracking began. The registry record was last updated on Jan 14, 2026, before this site started recording changes on Sep 25, 2026. Its history is on ClinicalTrials.gov ↗
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Registry details

Key details

Study ID
NCT05064371
Lead sponsor
H. Lundbeck A/S
Responsible party
Sponsor
First posted
Oct 1, 2021
Start date
Sep 21, 2021
Primary completion
Jun 8, 2024
Completion
Jun 8, 2024
Last update
Jan 14, 2026

Study contacts

Email contact via H. Lundbeck A/S
study director · LundbeckClinicalTrials@Lundbeck.com

Oversight

Data monitoring committee
Yes
FDA-regulated drug
No
FDA-regulated device
No
View the source record on ClinicalTrials.gov ↗

Not currently enrolling

This study is completed, as verified in Jan 2026. You cannot join it, but the record below documents what was studied.

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