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Myelin Oligodendrocyte Glycoprotein Antibody-associated Disease (MOGAD)Phase 3cosMOGNCT05063162

A Study to Evaluate the Efficacy and Safety of Rozanolixizumab in Adult Participants With Myelin Oligodendrocyte Glycoprotein (MOG) Antibody-associated Disease (MOGAD)

A Phase 3 study testing Rozanolixizumab in people with Myelin Oligodendrocyte Glycoprotein Antibody-associated Disease (MOGAD), run by UCB Biopharma SRL at 55 sites in 20 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

The purpose of the study is to evalute the efficacy, safety and tolerability of rozanolixizumab for treatment of adult participants with myelin oligodendrocyte glycoprotein (MOG) antibody-associated disease (MOGAD). Read more about this study

Who is it for?
Ages 18 to 89 years
What is being tested?
Rozanolixizumab
Type of treatment
Injection or infusion
Could I receive a placebo?
Yes, some participants may receive a placebo
How many people
113 participants
Where
55 sitesin 20 countries
Study dates
2 Feb 2022to 1 Jul 2027
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 to 89 years
  • All sexes
  • No healthy volunteers
  • Adult, Older adult

Who may be able to join

  • Participant must be ≥18 to ≤89 years of age, at the time of signing the informed consent
  • Confirmed diagnosis of MOGAD consistent with published diagnostic criteria for MOGAD
  • Participant has history of relapsing MOGAD with at least 1 documented relapse over the last 12 months and a documented positive serum MOG Ab test using a cell-based assay (CBA) within 6 months prior to randomization
  • Participant must be clinically stable at the time of the Screening Visit and during the Screening Period

Who cannot join

  • Participant has been diagnosed with a neurological autoimmune disease (including multiple sclerosis (MS) and aquaporin-4 positive neuromyelitis optica spectrum disorder (NMOSD)), or a systemic autoimmune disease that in the opinion of the investigator can interfere with the safety of the participant
  • Participant has a clinically important active infection (including unresolved or not adequately treated infection) as assessed by the investigator, including participants with a serious infection within 6 weeks prior to the first dose of the investigational medicinal product (IMP)
  • Participant has a current or medical history of primary immunodeficiency
  • Participant tests positive for aquaporin-4 antibodies at Screening
  • Participant has a serum total IgG level ≤ 5.5g/L

Trial locations and contacts

55 sites in 20 countries.

55 sites in 20 countries

United States11 sites
  • Mog001 50101

    Aurora, Colorado, 80045

  • Mog001 50552

    Baltimore, Maryland, 21287

  • Mog001 50243

    Boston, Massachusetts, 02114-3117

  • Mog001 50450

    Palo Alto, California, 94304

  • Mog001 50472

    Peoria, Illinois, 61637

  • Mog001 50104

    Rochester, Minnesota, 55905

  • Mog001 50473

    Salt Lake City, Utah, 84112

  • Mog001 50568

    San Antonio, Texas, 78229

  • Mog001 50297

    Scottsdale, Arizona, 85259-5452

  • Mog001 50308

    Tampa, Florida, 33612

  • Mog001 50553

    Washington D.C., District of Columbia, 20057

Other trials in United States

Japan9 sites
  • Mog001 20068

    Chiba

  • Mog001 20307

    Isehara

  • Mog001 20049

    Kitakyushu-shi

  • Mog001 20143

    Kodaira

  • Mog001 20223

    Koriyama-shi

  • Mog001 20224

    Sendai

  • Mog001 20227

    Sendai

  • Mog001 20070

    Shinjuku-ku

  • Mog001 20032

    Suita-shi

Other trials in Japan

Spain5 sites
  • Mog001 40267

    Barcelona

  • Mog001 40161

    Madrid

  • Mog001 40341

    Málaga

  • Mog001 40350

    Murcia

  • Mog001 40049

    Seville

Other trials in Spain

Turkey (Türkiye)4 sites
  • Mog001 40550

    Istanbul

  • Mog001 40726

    Izmir

  • Mog001 40648

    Samsun

  • Mog001 40725

    Sancaktepe

Other trials in Turkey (Türkiye)

Italy3 sites
  • Mog001 40146

    Pavia

  • Mog001 40629

    Roma

  • Mog001 40646

    Verona

Other trials in Italy

Switzerland3 sites
  • Mog001 40723

    Basel

  • Mog001 40337

    Bern

  • Mog001 40630

    Zurich

Other trials in Switzerland

Czechia2 sites
  • Mog001 40195

    Hradec Králové

  • Mog001 40721

    Teplice

Other trials in Czechia

Germany2 sites
  • Mog001 40140

    Göttingen

  • Mog001 40177

    Münster

Other trials in Germany

Mexico2 sites
  • Mog001 50486

    Culiacán

  • Mog001 50485

    Mexico City

Other trials in Mexico

Portugal2 sites
  • Mog001 40485

    Coimbra

  • Mog001 40669

    Porto

Other trials in Portugal

Ukraine2 sites
  • Mog001 20319

    Kyiv

  • Mog001 20228

    Ternopil

Other trials in Ukraine

United Kingdom2 sites
  • Mog001 40661

    Liverpool

  • Mog001 40163

    Oxford

Other trials in United Kingdom

Australia1 site
  • Mog001 30022

    Melbourne

Other trials in Australia

Belgium1 site
  • Mog001 40185

    Ghent

Other trials in Belgium

Brazil1 site
  • Mog001 60033

    Porto Alegre

Other trials in Brazil

France1 site
  • Mog001 40170

    Strasbourg

Other trials in France

Greece1 site
  • Mog001 40850

    Athens

Other trials in Greece

Poland1 site
  • Mog001 40840

    Bydgoszcz

Other trials in Poland

South Korea1 site
  • Mog001 20226

    Goyang-si

Other trials in South Korea

Sweden1 site
  • Mog001 40663

    Huddinge

Other trials in Sweden

About this study

Official title: A Randomized, Double-Blind, Placebo-Controlled, Multicenter, Phase 3, Pivotal Study With an Open-Label Extension Period to Evaluate the Efficacy and Safety of Rozanolixizumab in Adult Participants With Myelin Oligodendrocyte Glycoprotein (MOG) Antibody-Associated Disease (MOG-AD)

The purpose of the study is to evalute the efficacy, safety and tolerability of rozanolixizumab for treatment of adult participants with myelin oligodendrocyte glycoprotein (MOG) antibody-associated disease (MOGAD).

Being tested
Rozanolixizumab, Placebo
Keywords
MOG, MOGAD, Rozanolixizumab, Myelin oligodendrocyte glycoprotein, Myelin oligodendrocyte glycoprotein antibody-associated disease
Medical subject headings
Myelin Oligodendrocyte Glycoprotein Antibody-Associated Disease

What participants receive

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

  • RozanolixizumabDrug

    Also called UCB7665

    • Pharmaceutical form: Solution for infusion
    • Route of administration: subcutaneous infusion

    Participants will receive pre-specified doses of rozanolixizumab.

  • PlaceboOther

    Also called PBO

    • Pharmaceutical form: Solution for infusion
    • Route of administration: subcutaneous infusion

    Participants will receive placebo.

Study groups in NCT05063162
Study groupRoleWhat they receive
Rozanolixizumab ArmExperimentalParticipants randomized into this arm will receive rozanolixizumab at pre-specified timepoints.
Receives: Drug: Rozanolixizumab
Placebo ArmPlacebo comparatorParticipants randomized into this arm will receive placebo at pre-specified timepoints to maintain the blinding.
Receives: Other: Placebo

What is being measured

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

  1. For Part A: Time from randomization to first independently centrally adjudicated relapse (TTFR) during the DB Treatment Period

    The TTFR (days) will be defined as the interval between the date of randomization and the first date of the objective relapse.

    During the Double Blind (DB) Treatment Period (Part A); EDB/EWD = End of Double-Blind/Early Withdrawal Visit

    Measured: Baseline (Week 1) to EDB/EWD Visit (until a confirmed relapse or up to approximately 132 weeks; in isolated cases this can be up to approximately 204 weeks)

  2. For Part B: Incidence of treatment-emergent adverse events (TEAEs) during OLE Treatment Period

    An adverse event (AE) is any untoward medical occurrence in a patient or clinical study participant, temporally associated with the use of investigational medicinal product (IMP), whether or not considered related to the IMP. NOTE: An AE can therefore be any unfavorable and unintended sign (including an abnormal laboratory finding), symptom, or disease (new or exacerbated) temporally associated with the use of IMP.

    Open-Label Extension (OLE) Treatment Period (Part B); EOS/EWD = End of Study/Early Withdrawal Visit.

    Measured: OLE Treatment Period (OLE Week 1) to EOS/EWD Visit (up to OLE Week 52)

  3. For Part B: Incidence of treatment-emergent adverse events (TEAEs) leading to permanent withdrawal of investigational medicinal product (IMP) during OLE Treatment Period

    An adverse event (AE) is any untoward medical occurrence in a patient or clinical study participant, temporally associated with the use of investigational medicinal product (IMP), whether or not considered related to the IMP. NOTE: An AE can therefore be any unfavorable and unintended sign (including an abnormal laboratory finding), symptom, or disease (new or exacerbated) temporally associated with the use of IMP. TEAEs leading to discontinuation of the study are reported.

    Measured: OLE Treatment Period (OLE Week 1) to EOS/EWD Visit (up to OLE Week 52)

Secondary outcomes (5)
  1. For Part A: Change from Baseline in Low-Contrast Monocular Visual Acuity (Worst Affected Eye) measured by low-contrast Landolt C Broken Rings Chart at the EDB/EWD Visit

    Visual acuity is a measurement of the capacity for visual discrimination of fine details. Visual acuity tests are used to determine the smallest characters that can be read on a standardized chart. The Landolt C Broken Ring Chart uses standardized incomplete rings or "C", which are positioned in any direction in the chart (up, down, left, right, and 45 degree positions in between). The participant has to be able to indicate where the break of the "C" is located, by describing the position or by giving gesture.

    Measured: Baseline (Week 1) to EDB/EWD Visit (until a confirmed relapse or up to approximately 132 weeks; in isolated cases this can be up to approximately 204 weeks)

  2. For Part A: Disability as assessed by Expanded Disability Status Scale (EDSS) scores at the EDB/EWD Visit (with confirmation at 3 months)

    The EDSS is an ordinal clinical rating scale ranging from 0 (normal neurologic examination) to 10 (death) in half-point increments with half steps from 1.0 to 9.5. The higher the value the higher is the level of impairment and disability.

    Measured: Baseline (Week 1) to EDB/EWD Visit (until a confirmed relapse or up to approximately 132 weeks; in isolated cases this can be up to approximately 204 weeks)

  3. For Part A: Number of MOGAD related inpatient hospitalizations during the DB Treatment Period

    The total number of MOGAD related hospitalizations from Baseline through EDB/EWD Visit.

    Measured: Baseline (Week 1) to EDB/EWD Visit (until a confirmed relapse or up to approximately 132 weeks; in isolated cases this can be up to approximately 204 weeks)

  4. For Part A: Incidence of treatment-emergent adverse events (TEAEs) during the DB Treatment Period

    An adverse event (AE) is any untoward medical occurrence in a patient or clinical study participant, temporally associated with the use of investigational medicinal product (IMP), whether or not considered related to the IMP. NOTE: An AE can therefore be any unfavorable and unintended sign (including an abnormal laboratory finding), symptom, or disease (new or exacerbated) temporally associated with the use of IMP.

    Measured: Baseline (Week 1) to EDB/EWD Visit (until a confirmed relapse or up to approximately 132 weeks; in isolated cases this can be up to approximately 204 weeks)

  5. For Part B: Independently centrally adjudicated annualized relapse rate (ARR) during the DB and OLE Treatment Period

    An ARR will be calculated for each participant prior to randomization into the Double-Blind Treatment Period (based on available historical data), and 2 ARRs after randomization to study treatment: first for relapses occurring during the Double-Blind Treatment Period and the second for relapses occurring during the OLE Treatment Period. The relapse episodes for each participant will be recorded throughout the entire study.

    Measured: Baseline (Week 1) to EOS/EWD Visit (up to OLE 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 posted30 Sep 2021
  2. Study start2 Feb 2022
  3. Primary completion6 May 2027 (estimated)
  4. Study completion1 Jul 2027 (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
Masking
Quadruple blind
Who is masked
Participant, Care provider, Investigator, Outcomes assessor
Enrolment
113 participants (actual)
IDs, dates and publications
ClinicalTrials.gov ID
NCT05063162
Sponsor's protocol ID
MOG001
Other IDs
2021-000352-19, 2023-509237-39, U1111-1301-0122, 2023
Acronym
cosMOG
Status last verified
Oct 2026
First submitted
21 Sep 2021
Last updated
27 Oct 2026
Results posted
No
Data monitoring committee
Yes
FDA-regulated drug
Yes
FDA-regulated device
No
Individual data sharing
Yes: Data from this trial may be requested by qualified researchers six months after product approval in the US and/or Europe, or global development is discontinued, and 18 months after trial completion. Investigators may request access to anonymized individual patient-level data and redacted trial documents which may include: analysis-ready datasets, study protocol, annotated case report form, statistical analysis plan, dataset specifications, and clinical study report. Prior to use of the data, proposals need to be approved by an independent review panel at www.Vivli.org and a signed data sharing agreement will need to be executed. All documents are available in English only, for a prespecified time, typically 12 months, on a password protected portal. This plan may change if the risk of re-identifying trial participants is determined to be too high after the trial is completed; in this case and to protect participants, individual patient-level data would not be made available.

Publications

  • Mader S, Kumpfel T, Meinl E. Pathomechanisms in demyelination and astrocytopathy: autoantibodies to AQP4, MOG, GFAP, GRP78 and beyond. Curr Opin Neurol. 2022 Jun 1;35(3):427-435. doi: 10.1097/WCO.0000000000001052.

    PubMed 35674086

Questions about this trial

What is this clinical trial studying?

A Phase 3 study testing Rozanolixizumab in people with Myelin Oligodendrocyte Glycoprotein Antibody-associated Disease (MOGAD), run by UCB Biopharma SRL at 55 sites in 20 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 4 inclusion and 5 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 27 Oct 2026. Status can change between updates, so confirm with the study contact before making plans.

Where is the study taking place?

The record lists 55 sites in United States, Japan, Spain, Turkey (Türkiye), Italy and 15 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. Some participants in this study may receive a placebo. 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?

For Part A: Time from randomization to first independently centrally adjudicated relapse (TTFR) during the DB Treatment Period (time frame: Baseline (Week 1) to EDB/EWD Visit (until a confirmed relapse or up to approximately 132 weeks; in isolated cases this can be up to approximately 204 weeks)). The study lists 3 primary outcomes in all. It is what the study was designed to measure, not a finding.

Where can I read the original study information?

On the ClinicalTrials.gov record for NCT05063162, which also lists 1 linked publication.

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 27 Oct 2026.

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