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Eosinophilic Granulomatosis With PolyangiitisPhase 3OCEANNCT05263934

Efficacy and Safety of Depemokimab Compared With Mepolizumab in Adults With Relapsing or Refractory Eosinophilic Granulomatosis With Polyangiitis (EGPA)

A Phase 3 study testing Depemokimab and Mepolizumab in people with Eosinophilic Granulomatosis With Polyangiitis, run by GlaxoSmithKline at 63 sites in 18 countries.

Active, not recruiting

Under way, not looking for participants. Everyone needed has enrolled. The study is still running.

Official record
Search all trials

Trial summary

This study aims to investigate the efficacy and safety of depemokimab compared with mepolizumab in adults with relapsing or refractory EGPA receiving SoC therapy. Read more about this study

Who is it for?
Ages 18 years and older
What is being tested?
Depemokimab and Mepolizumab
Could I receive a placebo?
Yes, some participants may receive a placebo
How many people
163 participants
Where
63 sitesin 18 countries
Study dates
14 Jul 2022to 27 Oct 2026
Phase
Phase 3
Are there results?
Not yet: the study is under way

Key requirements

Who can take part, as listed by the sponsor. Only the study team can confirm whether you are eligible, so take this list to your doctor.

  • Ages 18 years and older
  • All sexes
  • No healthy volunteers
  • Adult, Older adult

Who may be able to join

  • Participant (male or female) must be 18 years of age or older at the time of signing the informed consent.
  • Participants who are >=40 kilogram at Screening Visit 1.
  • Participants with a documented diagnosis of EGPA for at least 6 months based on the history or presence of: asthma plus eosinophilia defined as >1.0*10^9/Liter (L) and/or >10 percentage (%) of leucocytes plus at least 2 of the following additional features of EGPA: a biopsy showing histopathological evidence of eosinophilic vasculitis, or perivascular eosinophilic infiltration, or eosinophil-rich granulomatous inflammation, neuropathy, mono or poly (motor deficit or nerve conduction abnormality), pulmonary infiltrates, non-fixed, sino-nasal abnormality, cardiomyopathy (established by echocardiography or magnetic resonance imaging), glomerulonephritis (hematuria, red cell casts, proteinuria), alveolar hemorrhage (by bronchoalveolar lavage), palpable purpura, anti-neutrophil cytoplasmic antibodies positive Myeloperoxidase or Proteinase 3.
  • History of relapsing OR refractory disease.
  • Participants must be on a stable dose of oral prednisolone or prednisone of >=7.5 mg/day (but not >50 mg/day) or equivalent for at least 4 weeks prior to Baseline (Visit 2).
  • If participants receiving immunosuppressive therapy (excluding cyclophosphamide) the dosage must be stable for the 4 weeks prior to Baseline (Visit 2) and during the study.
  • A female participant is eligible to participate if she is not pregnant or breastfeeding, and one of the following conditions applies: Is a woman of non-childbearing potential (WONCBP) OR Is a woman of childbearing potential (WOCBP) and using a contraceptive method that is highly effective, with a failure rate of <1%.
  • Capable of giving signed informed consent

Who cannot join

  • Participants diagnosed with granulomatosis with polyangiitis; previously known as Wegener's granulomatosis or microscopic polyangiitis.
  • Participants with organ-threatening EGPA as per EULAR criteria,
  • Imminently life-threatening EGPA disease within 3 months prior to Screening (Visit 1).
  • A current malignancy or previous history of cancer in remission for less than 12 months prior to Screening.
  • Participants with alanine aminotransferase >2*upper limit of normal (ULN) or if participant is on background methotrexate or azathioprine >3*ULN, aspartate aminotransferase >2*ULN or if participant is on background methotrexate or azathioprine >3*ULN, alkaline phosphatase >=2.0*ULN, total bilirubin >1.5*ULN (isolated bilirubin >1.5*ULN is acceptable if bilirubin is fractionated and direct bilirubin <35%), Cirrhosis or current unstable liver or biliary disease per investigator assessment.
  • Participants who have severe or clinically significant cardiovascular disease uncontrolled with standard treatment.
Show all 16Show fewer
  • Participants who have known, pre-existing, clinically significant system abnormalities that are not associated with EGPA and are uncontrolled with standard treatment.
  • Clinically significant abnormality in the hematological, biochemical or urinalysis screen at Visit 1.
  • Chronic or ongoing active infectious disease requiring systemic treatment.
  • Participants with a known, pre-existing parasitic infestation within 6 months prior to Screening Visit 1.
  • A known immunodeficiency (e.g., human immunodeficiency virus [HIV]).
  • Participants that, according to the investigator's medical judgment, are likely to have active coronavirus disease 2019 (COVID-19) infection. Participants with known COVID-19 positive contacts within the past 14 days must be excluded for at least 14 days following the exposure during which the participant must remain symptom-free.
  • Participants with a known allergy or intolerance to a monoclonal antibody or biologic therapy or any of the excipients of the investigational products.
  • Participants who have a previous documented failure with anti-Interleukin-5 /Interleukin-5 receptor therapy (e.g., mepolizumab, reslizumab, benralizumab). Participants who have received monoclonal antibodies (mAb) and who have not undergone the required washout periods, prior to Visit 1.
  • Participants receiving any of the following: Oral corticosteroids: Participant requires an oral corticosteroid dose of >50 mg/day prednisolone/prednisone in the 4-week period prior to Baseline (Visit 2), Intravenous (IV), intramuscular or subcutaneous (SC) corticosteroids in the 4-week period prior to Baseline (Visit 2), Omalizumab within 130 days prior to Screening (Visit 1), Cyclophosphamide (CYC): oral CYC within 4 weeks prior to Baseline (Visit 2) and IV CYC within 3 weeks prior to Baseline (Visit 2), if their total white blood cells is >=4*10^9/L (measured using the local laboratory if necessary), Rituximab within 12 months prior to Screening (Visit 1); in addition, the Participant must have shown recovery of peripheral B-cell count to within the normal range, Tezepelumab and Dupilumab with a washout period of 5 half-lives prior to Screening Visit 1, IV or SC immunoglobulin within 6 months prior to Screening (Visit 1); For China and Japan only within 12 weeks prior to Screening (Visit 1), Interferon-alpha within 6 months prior to Screening Visit 1, Anti-tumor necrosis factor therapy within 12 weeks prior to Screening Visit 1, Anti-CD52 (alemtuzumab) within 6 months prior to Screening Visit 1.
  • Participants with QT interval corrected for heart rate according to Fridericia's formula (QTcF) >=450 milliseconds (msec) or QTcF >=480 msec for participants with Bundle Branch Block in the 12-lead ECG central over-read from at Screening Visit 1.

Trial locations and contacts

63 sites in 18 countries.

63 sites in 18 countries

Italy10 sites
  • GSK Investigational Site

    Bari, 70124

  • GSK Investigational Site

    Brescia, 25123

  • GSK Investigational Site

    Florence, 50134

  • GSK Investigational Site

    Milan, 20132

  • GSK Investigational Site

    Milan, 20162

  • GSK Investigational Site

    Pavia, 27100

  • GSK Investigational Site

    Pisa, 56126

  • GSK Investigational Site

    Roma, 00128

  • GSK Investigational Site

    Torrette AN, 60126

  • GSK Investigational Site

    Treviso, 31100

Other trials in Italy

China8 sites
  • GSK Investigational Site

    Beijing, 100005

  • GSK Investigational Site

    Guangzhou, 510163

  • GSK Investigational Site

    Hefei, 230001

  • GSK Investigational Site

    Nanjing, 210006

  • GSK Investigational Site

    Qingdao, 266071

  • GSK Investigational Site

    Shanghai, 200032

  • GSK Investigational Site

    Shenzhen, 518020

  • GSK Investigational Site

    Wenzhou, 325000

Other trials in China

United States6 sites
  • GSK Investigational Site

    Charlotte, North Carolina, 28211

  • GSK Investigational Site

    Denver, Colorado, 80206

  • GSK Investigational Site

    Gainesville, Florida, 32610

  • GSK Investigational Site

    New York, New York, 10021

  • GSK Investigational Site

    Pittsburgh, Pennsylvania, 15261

  • GSK Investigational Site

    Rochester, Minnesota, 55905

Other trials in United States

Japan5 sites
  • GSK Investigational Site

    Kanagawa, 247-8533

  • GSK Investigational Site

    Kanagawa, 252-0392

  • GSK Investigational Site

    Saitama, 350-8550

  • GSK Investigational Site

    Tokyo, 162-8666

  • GSK Investigational Site

    Tokyo, 181-8611

Other trials in Japan

South Korea5 sites
  • GSK Investigational Site

    Gwangju, 61469

  • GSK Investigational Site

    Seoul, 05505

  • GSK Investigational Site

    Seoul, 06351

  • GSK Investigational Site

    Seoul, 06591

  • GSK Investigational Site

    Seoul, 3080

Other trials in South Korea

Spain5 sites
  • GSK Investigational Site

    Barcelona, 08035

  • GSK Investigational Site

    Barcelona, 08036

  • GSK Investigational Site

    Granada, 18014

  • GSK Investigational Site

    Pamplona, 31008

  • GSK Investigational Site

    Zaragoza, 50009

Other trials in Spain

France3 sites
  • GSK Investigational Site

    La Roche-sur-Yon, 85925

  • GSK Investigational Site

    Nantes, 44093

  • GSK Investigational Site

    Paris, 75014

Other trials in France

Poland3 sites
  • GSK Investigational Site

    Gdansk, 80-952

  • GSK Investigational Site

    Lodz, 90-153

  • GSK Investigational Site

    Warsaw, 01-138

Other trials in Poland

United Kingdom3 sites
  • GSK Investigational Site

    Birmingham, B15 2GW

  • GSK Investigational Site

    Cambridge, CB2 2QQ

  • GSK Investigational Site

    London, SE1 7EH

Other trials in United Kingdom

Argentina2 sites
  • GSK Investigational Site

    La Plata, B1900

  • GSK Investigational Site

    San Miguel de Tucumán, T4000

Other trials in Argentina

Brazil2 sites
  • GSK Investigational Site

    Santo André, 09060-870

  • GSK Investigational Site

    São Paulo, 4023900

Other trials in Brazil

Canada2 sites
  • GSK Investigational Site

    Toronto, Ontario, M5T 3A9

  • GSK Investigational Site

    Toronto, Ontario, M5T 3L9

Other trials in Canada

Germany2 sites
  • GSK Investigational Site

    Freiburg im Breisgau, 79106

  • GSK Investigational Site

    Minden, 32429

Other trials in Germany

Netherlands2 sites
  • GSK Investigational Site

    Groningen, 9713 GZ

  • GSK Investigational Site

    Leiden, 2333 ZA

Other trials in Netherlands

Portugal2 sites
  • GSK Investigational Site

    Lisbon, 1649-035

  • GSK Investigational Site

    Porto, 4099-001

Other trials in Portugal

Austria1 site
  • GSK Investigational Site

    Graz, 8036

Other trials in Austria

Israel1 site
  • GSK Investigational Site

    Ramat Gan, 52621

Other trials in Israel

Sweden1 site
  • GSK Investigational Site

    Malmö, SE-205 02

Other trials in Sweden

About this study

Official title: A 52-week, Randomized, Double-blind, Double-dummy, Parallel-group, Multi-centre, Non-inferiority Study to Investigate the Efficacy and Safety of Depemokimab Compared With Mepolizumab in Adults With Relapsing or Refractory Eosinophilic Granulomatosis With Polyangiitis (EGPA) Receiving Standard of Care (SoC) Therapy

This study aims to investigate the efficacy and safety of depemokimab compared with mepolizumab in adults with relapsing or refractory EGPA receiving SoC therapy.

Being tested
Depemokimab, Mepolizumab, Placebo matching mepolizumab, Placebo matching depemokimab
Keywords
Depemokimab, Mepolizumab, Eosinophilic Granulomatosis with Polyangiitis
Medical subject headings
Churg-Strauss Syndrome

What participants receive

What participants receive. In a randomised study each person is assigned to one group by chance.

  • DepemokimabBiological

    Depemokimab will be administered

  • MepolizumabBiological

    Mepolizumab will be administered

  • Placebo matching mepolizumabDrug

    Placebo matching to mepolizumab will be administered.

  • Placebo matching depemokimabDrug

    Placebo matching to depemokimab will be administered.

Study groups in NCT05263934
Study groupRoleWhat they receive
Participants receiving depemokimab+placebo matching mepolizumabExperimentalNot described
Receives: Biological: Depemokimab; Drug: Placebo matching mepolizumab
Participants receiving mepolizumab+placebo matching depemokimabActive comparatorNot described
Receives: Biological: Mepolizumab; Drug: Placebo matching depemokimab

What is being measured

The primary outcome is the main question the study is designed to answer.

  1. Number of participants with remission (Birmingham Vasculitis Activity Score [BVAS] =0 and a dose of oral corticosteroid [OCS] less than or equal to [<=] 4 milligram [mg] per day)

    Participants must be in remission at both Weeks 36 and 52.

    Measured: Up to Week 52

Secondary outcomes (9)
  1. Number of participants in each category of accrued duration of remission

    Total accrued duration of remission is the accrued number of weeks where BVAS = 0 plus OCS dose <= 4 mg/day over the 52-week intervention period. The accrued duration was categorized into zero, >0 to <12 weeks, 12 to <24 weeks, 24 to <36 weeks or more than or equal to (>=) 36 weeks.

    Measured: Up to Week 52

  2. Number of participants with total accrued duration of remission

    Total accrued duration of remission is the accrued number of weeks where BVAS = 0 plus OCS dose <= 4 mg/day over the 52-week intervention period.

    Measured: Up to Week 52

  3. Time to first EGPA relapse

    The time to first EGPA relapse will be calculated from the date of first dose of study intervention and start date of the EGPA relapse.

    Measured: Up to Week 52

  4. Number of participants receiving in each category of mean OCS dose during the last 4 weeks of study treatment period (Weeks 49 to 52)

    Number of participants receiving the mean OCS dose (categorized as 0, >0 to <=4, >4 to <=7.5 or >7.5 mg/day) will be assessed during the last 4 weeks of the study treatment period (Weeks 49 to 52).

    Measured: Weeks 49 to 52

  5. Number of participants achieving remission (BVAS = 0 and OCS <= 4 mg/day) within the first 24 weeks with continued remission until Week 52

    Measured: Up to Week 52

  6. Number of participants achieving remission using the European League against Rheumatism (EULAR) definition (BVAS = 0 and OCS <=7.5 mg/day) at Weeks 36 and 52

    Measured: At Weeks 36 and 52

  7. Number of participants in each category of accrued duration of remission according to the EULAR definition of remission (BVAS = 0 plus OCS <=7.5 mg/day) over 52-week intervention period

    Total accrued duration of remission according to the EULAR definition of remission is the accrued number of weeks where BVAS = 0 plus OCS dose <=7.5 mg/day over the 52 week intervention period categorized as zero weeks; >0 to <12 weeks; 12 to <24 weeks; 24 to <36 weeks or >= 36 weeks.

    Measured: Up to Week 52

  8. Number of participants with total accrued duration of remission according to the EULAR definition of remission

    Total accrued duration of remission according to the EULAR definition of remission is the accrued number of weeks where BVAS=0 plus OCS <=7.5 mg/day over the 52-week intervention period.

    Measured: Up to Week 52

  9. Number of participants with remission (BVAS=0 and OCS <=7.5 mg/day) within the first 24 weeks with continued remission until Week 52

    Measured: Up to Week 52

Timeline

From the start of the study to its completion; the mark is today. Estimated dates are the sponsor’s plan.

  1. First posted3 Mar 2022
  2. Study start14 Jul 2022
  3. Primary completion29 Sep 2026 (estimated)
  4. Study completion27 Oct 2026 (estimated)

Resources

More details

For doctors and researchers: how the study is designed, who runs it, and its registry IDs.

Study design
Study type
Interventional
Phase
Phase 3
Primary purpose
Treatment
Allocation
Randomised
Intervention model
Parallel groups
Model description
Participants will receive either depemokimab plus placebo matching mepolizumab or mepolizumab plus placebo matching depemokimab
Masking
Quadruple blind
Who is masked
Participant, Care provider, Investigator, Outcomes assessor
Enrolment
163 participants (actual)
IDs, dates and publications
ClinicalTrials.gov ID
NCT05263934
Sponsor's protocol ID
217102
Other IDs
2023-510019-20-00, 2023
Acronym
OCEAN
Status last verified
Jul 2026
First submitted
28 Feb 2022
Last updated
8 Jul 2026
Results posted
No
Data monitoring committee
Yes
FDA-regulated drug
Yes
FDA-regulated device
No
Individual data sharing
Yes: IPD for this study will be made available via the Clinical Study Data Request site.

Questions about this trial

What is this clinical trial studying?

A Phase 3 study testing Depemokimab and Mepolizumab in people with Eosinophilic Granulomatosis With Polyangiitis, run by GlaxoSmithKline at 63 sites in 18 countries.

The full registered description is in the About this study section and the official record.

Who may be eligible to take part?

The sponsor lists 8 inclusion and 16 exclusion criteria. Eligibility is decided by the study team after screening, so read the full criteria and contact a listed site.

Is this clinical trial currently recruiting?

The record says: under way, not looking for participants, as of the sponsor's last update on 8 Jul 2026. Status can change between updates, so confirm with the study contact before making plans.

Where is the study taking place?

The record lists 63 sites in Italy, China, United States, Japan, South Korea and 13 more countries. Whether a site is taking part right now should be confirmed with that site. See every site.

What are the possible benefits and risks?

They depend on the study and the treatment, and no study can promise a benefit. The study team explains the known risks during informed consent, before anyone joins; the record itself does not list them.

What does this phase mean?

Phase 3 studies compare the treatment with the current standard treatment or a placebo in a large group, to confirm how well it works and watch for side effects.

Not every study follows the same path, and some studies (observational studies, device studies) have no phase.

Are results available for this study?

This study is still under way. Results are not available in the source record yet.

How can a doctor refer a patient or contact the research team?

The record lists no contact. The official record names the sponsor, who can be asked directly. AzTrials does not enrol participants or take referrals.

What does the primary outcome measure?

Number of participants with remission (Birmingham Vasculitis Activity Score [BVAS] =0 and a dose of oral corticosteroid [OCS] less than or equal to [<=] 4 milligram [mg] per day) (time frame: Up to Week 52). It is what the study was designed to measure, not a finding.

Where can I read the original study information?
Does a listing mean the treatment is approved or proven to work?

No. A listing means the study is registered. It does not show that the treatment is safe, works, or is approved by a regulator.

How often is this information updated?

AzTrials copies changed records from ClinicalTrials.gov every night and reloads the whole registry every week. The sponsor last updated this record on 8 Jul 2026.

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