NCT05403541TerminatedPhase 3
Phase 3 Study to Assess the Efficacy and Safety of Batoclimab as Induction and Maintenance Therapy in Adult Participants With Generalized Myasthenia Gravis
A Phase 3, Multi-center, Randomized, Quadruple-blind, Placebo-controlled Study to Assess the Efficacy and Safety of Batoclimab as Induction and Maintenance Therapy in Adult Participants With Generalized Myasthenia Gravis (gMG)
Source: ClinicalTrials.gov · Last updated 14 Sept 2026
Reason given: Sponsor Decision
Brief summary (registry, in English)
The purpose of this 4-period study is to confirm the efficacy and safety of batoclimab in participants with gMG. In Period 1, participants will be randomized 1:1:1 to receive batoclimab 680 milligrams (mg) subcutaneously (SC) once a week (QW) or 340 mg SC QW or placebo. The primary efficacy endpoint will be assessed by change in the myasthenia gravis activities of daily living (MG- ADL) score in acetylcholine receptor antibody seropositive (AChRAb+) participants. In Period 2, participants previously treated with batoclimab will be re-randomized to stay on batoclimab (340 mg SC QW or 340 mg SC every two weeks) or receive placebo treatment. The secondary endpoint of maintenance of efficacy will be assessed by change in the MG- ADL score in AChRAb+ participants. Participants demonstrating a response to batoclimab during either Period 1 or 2 may enter the long-term extension (Period 3). Participants who complete Period 3 are eligible to participate in Period 4 (Optional Long-Term extension) according to their treatment assignment in Period 3.
- Status (registry)
- Terminated
- Phase (registry)
- Phase 3
- Study type
- Interventional
- Enrollment
- 233 (actual)
- First submitted
- 26 May 2022
- Start date
- 27 Jun 2022
- Primary completion date
- 10 Jan 2025
- Lead sponsor
- Immunovant Sciences GmbH
- Diseases
- Myasthenia gravis
- NCT number
- NCT05403541
Who cannot take part
Copied verbatim from ClinicalTrials.gov and grouped by topic. Only the trial team decides who can take part.
Prior treatment
- Have had a thymectomy performed < 6 months prior to the Screening Visit or have a planned thymectomy during the study period.
- Have received any agent or therapy (exclusive of those identified within inclusion criteria) with immunosuppressive properties (e.g., stem cell therapy, chemotherapies) within the past year.
- Have used anti-FcRn treatment within 3 months prior to the Screening Visit or have a documented history of non-response to prior anti-FcRn treatment.
Other illness
- Have any active or untreated malignant thymoma.
Other
- Have experienced myasthenic crisis within 3 months of the Screening Visit.
- Additional exclusion criteria are defined in the protocol.
Who the study is looking for
- Are ≥ 18 years of age at the Screening Visit.
- Have mild to severe gMG by Myasthenia Gravis Foundation of America (MGFA) classification Class II, III, or IVa at the Screening Visit.
- Have a QMG score ≥ 11 at the Screening and Baseline Visits.
- Have a MG-ADL score of ≥ 5 at the Screening and Baseline Visits.
- Additional inclusion criteria are defined in the protocol.
Age in the registry: 18 years to - · Sex: All · Does not accept healthy volunteers
Sites (93)
Sites in registry order. Save your city in your profile to sort them by distance.
| Site | City | Country | Site status |
|---|---|---|---|
| - | Buenos Aires | Argentina | Unknown status |
| - | Buenos Aires | Argentina | Unknown status |
| - | Rosario | Argentina | Unknown status |
| - | Ribeirão Preto | Brazil | Unknown status |
| - | Rio de Janeiro | Brazil | Unknown status |
| - | Montreal | Canada | Unknown status |
| - | Toronto | Canada | Unknown status |
| - | Vancouver | Canada | Unknown status |
| - | Berlin | Germany | Unknown status |
| - | Gummersbach | Germany | Unknown status |
| - | Jena | Germany | Unknown status |
| - | Leipzig | Germany | Unknown status |
| - | Würzburg | Germany | Unknown status |
| - | Barcelona | Spain | Unknown status |
| - | Barcelona | Spain | Unknown status |
| - | Madrid | Spain | Unknown status |
| - | Madrid | Spain | Unknown status |
| - | Sheffield | United Kingdom | Unknown status |
| - | Tbilisi | Georgia | Unknown status |
| - | Tbilisi | Georgia | Unknown status |
| - | Tbilisi | Georgia | Unknown status |
| - | Tbilisi | Georgia | Unknown status |
| - | Tbilisi | Georgia | Unknown status |
| - | Budapest | Hungary | Unknown status |
| - | Kistarcsa | Hungary | Unknown status |
| - | Bergamo | Italy | Unknown status |
| - | Brescia | Italy | Unknown status |
| - | Genova | Italy | Unknown status |
| - | Milan | Italy | Unknown status |
| - | Naples | Italy | Unknown status |
| - | Naples | Italy | Unknown status |
| - | Asahikawa-shi | Japan | Unknown status |
| - | Fuchu-shi | Japan | Unknown status |
| - | Hanamaki-shi | Japan | Unknown status |
| - | Higashimatsushima | Japan | Unknown status |
| - | Kawasaki-shi | Japan | Unknown status |
| - | Koriyama-shi | Japan | Unknown status |
| - | Koshigaya-shi | Japan | Unknown status |
| - | Matsuyama | Japan | Unknown status |
| - | Miyagi | Japan | Unknown status |
| - | Narita-shi | Japan | Unknown status |
| - | Osaka | Japan | Unknown status |
| - | Osaka | Japan | Unknown status |
| - | Tokyo | Japan | Unknown status |
| - | Yokohama | Japan | Unknown status |
| - | Yokohama | Japan | Unknown status |
| - | Yokohama | Japan | Unknown status |
| - | Daegu | South Korea | Unknown status |
| - | Seoul | South Korea | Unknown status |
| - | Mexico City | Mexico | Unknown status |
| - | Gdansk | Poland | Unknown status |
| - | Katowice | Poland | Unknown status |
| - | Krakow | Poland | Unknown status |
| - | Krakow | Poland | Unknown status |
| - | Krakow | Poland | Unknown status |
| - | Lublin | Poland | Unknown status |
| - | Poznan | Poland | Unknown status |
| - | Warsaw | Poland | Unknown status |
| - | Constanța | Romania | Unknown status |
| - | Târgu Mureş | Romania | Unknown status |
| - | Timișoara | Romania | Unknown status |
| - | Belgrade | Serbia | Unknown status |
| - | Niš | Serbia | Unknown status |
| - | Aurora | United States | Unknown status |
| - | Austin | United States | Unknown status |
| - | Buffalo | United States | Unknown status |
| - | Carlsbad | United States | Unknown status |
| - | Chapel Hill | United States | Unknown status |
| - | Charlottesville | United States | Unknown status |
| - | Clearwater | United States | Unknown status |
| - | Cleveland | United States | Unknown status |
| - | Dallas | United States | Unknown status |
| - | Durham | United States | Unknown status |
| - | East Lansing | United States | Unknown status |
| - | Fairway | United States | Unknown status |
| - | Houston | United States | Unknown status |
| - | Irvine | United States | Unknown status |
| - | Lexington | United States | Unknown status |
| - | Maitland | United States | Unknown status |
| - | Memphis | United States | Unknown status |
| - | Miami | United States | Unknown status |
| - | Minneapolis | United States | Unknown status |
| - | New Haven | United States | Unknown status |
| - | Olive View | United States | Unknown status |
| - | Orlando | United States | Unknown status |
| - | Philadelphia | United States | Unknown status |
| - | Phoenix | United States | Unknown status |
| - | Port Charlotte | United States | Unknown status |
| - | Portland | United States | Unknown status |
| - | Round Rock | United States | Unknown status |
| - | San Francisco | United States | Unknown status |
| - | Scottsdale | United States | Unknown status |
| - | Tampa | United States | Unknown status |
This page is information, not medical advice. Discuss any trial with your doctor.