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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
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

Full criteria on ClinicalTrials.gov

Sites (93)

Sites in registry order. Save your city in your profile to sort them by distance.

SiteCityCountrySite status
-Buenos AiresArgentinaUnknown status
-Buenos AiresArgentinaUnknown status
-RosarioArgentinaUnknown status
-Ribeirão PretoBrazilUnknown status
-Rio de JaneiroBrazilUnknown status
-MontrealCanadaUnknown status
-TorontoCanadaUnknown status
-VancouverCanadaUnknown status
-BerlinGermanyUnknown status
-GummersbachGermanyUnknown status
-JenaGermanyUnknown status
-LeipzigGermanyUnknown status
-WürzburgGermanyUnknown status
-BarcelonaSpainUnknown status
-BarcelonaSpainUnknown status
-MadridSpainUnknown status
-MadridSpainUnknown status
-SheffieldUnited KingdomUnknown status
-TbilisiGeorgiaUnknown status
-TbilisiGeorgiaUnknown status
-TbilisiGeorgiaUnknown status
-TbilisiGeorgiaUnknown status
-TbilisiGeorgiaUnknown status
-BudapestHungaryUnknown status
-KistarcsaHungaryUnknown status
-BergamoItalyUnknown status
-BresciaItalyUnknown status
-GenovaItalyUnknown status
-MilanItalyUnknown status
-NaplesItalyUnknown status
-NaplesItalyUnknown status
-Asahikawa-shiJapanUnknown status
-Fuchu-shiJapanUnknown status
-Hanamaki-shiJapanUnknown status
-HigashimatsushimaJapanUnknown status
-Kawasaki-shiJapanUnknown status
-Koriyama-shiJapanUnknown status
-Koshigaya-shiJapanUnknown status
-MatsuyamaJapanUnknown status
-MiyagiJapanUnknown status
-Narita-shiJapanUnknown status
-OsakaJapanUnknown status
-OsakaJapanUnknown status
-TokyoJapanUnknown status
-YokohamaJapanUnknown status
-YokohamaJapanUnknown status
-YokohamaJapanUnknown status
-DaeguSouth KoreaUnknown status
-SeoulSouth KoreaUnknown status
-Mexico CityMexicoUnknown status
-GdanskPolandUnknown status
-KatowicePolandUnknown status
-KrakowPolandUnknown status
-KrakowPolandUnknown status
-KrakowPolandUnknown status
-LublinPolandUnknown status
-PoznanPolandUnknown status
-WarsawPolandUnknown status
-ConstanțaRomaniaUnknown status
-Târgu MureşRomaniaUnknown status
-TimișoaraRomaniaUnknown status
-BelgradeSerbiaUnknown status
-NišSerbiaUnknown status
-AuroraUnited StatesUnknown status
-AustinUnited StatesUnknown status
-BuffaloUnited StatesUnknown status
-CarlsbadUnited StatesUnknown status
-Chapel HillUnited StatesUnknown status
-CharlottesvilleUnited StatesUnknown status
-ClearwaterUnited StatesUnknown status
-ClevelandUnited StatesUnknown status
-DallasUnited StatesUnknown status
-DurhamUnited StatesUnknown status
-East LansingUnited StatesUnknown status
-FairwayUnited StatesUnknown status
-HoustonUnited StatesUnknown status
-IrvineUnited StatesUnknown status
-LexingtonUnited StatesUnknown status
-MaitlandUnited StatesUnknown status
-MemphisUnited StatesUnknown status
-MiamiUnited StatesUnknown status
-MinneapolisUnited StatesUnknown status
-New HavenUnited StatesUnknown status
-Olive ViewUnited StatesUnknown status
-OrlandoUnited StatesUnknown status
-PhiladelphiaUnited StatesUnknown status
-PhoenixUnited StatesUnknown status
-Port CharlotteUnited StatesUnknown status
-PortlandUnited StatesUnknown status
-Round RockUnited StatesUnknown status
-San FranciscoUnited StatesUnknown status
-ScottsdaleUnited StatesUnknown status
-TampaUnited StatesUnknown status

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