Evidence map›Paper›PMID 38062618›Full record

Trial reportAnnals of clinical and translational neurology2024

Subcutaneous batoclimab in generalized myasthenia gravis: Results from a Phase 2a trial with an open-label extension.

Richard J Nowak, Ari Breiner, Vera Bril, Jeffrey A Allen, Shaida Khan, Todd Levine, Daniel H Jacobs, Gregory Sahagian, Zaeem A Siddiqi, Jing Xu and 3 more

Open access · goldAbstract readRandomized Controlled TrialClinical Trial, Phase II
In one paragraph

Trial report in Annals of clinical and translational neurology, 2024. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 11 papers, 2 of them syntheses that pooled it.

0numbers the graph read from it
0cells of the map it votes in
11citing papers in PubMed, 2 pooled it
3.3field-weighted citation impact, top 7% of its field
1 · What the graph read from it

What it found

Each row is one number read from the abstract, on the scale the paper reported it, with its interval. Left of the dashed line favours the treatment, right favours the comparator. Under each row is the sentence it came from. New to these charts? A ten-minute tutorial.

The abstract states no effect estimate the extractor could read, or names no intervention and outcome on the map, so this paper lights no cell and moves no belief. It is still indexed, cited and linked below.

2 · The registry

The trial behind it

Trials whose registry record cites this paper, or whose number appears in the abstract. A trial that started after this paper was published is citing it as background, not reporting it.

Neither the registry nor the abstract names a trial number. If this is a trial report, that itself is worth knowing.

3 · Its place in the literature

Who cites it

11 citing papers in PubMed, 2 syntheses or guidelines pooled it, 16 citations in OpenAlex.

  1. Pooled it
  2. Pooled it
  3. Trial
  4. Review
  5. Review
  6. Review
  7. FcRn inhibitors for myasthenia gravis.The Cochrane database of systematic reviews · 2025
    Article
  8. Targeting the Neonatal Fc Receptor in Autoimmune Diseases: Pipeline and Progress.BioDrugs : clinical immunotherapeutics, biopharmaceuticals and gene therapy · 2025
    Review
  9. New and Emerging Biological Therapies for Myasthenia Gravis: A Focussed Review for Clinical Decision-Making.BioDrugs : clinical immunotherapeutics, biopharmaceuticals and gene therapy · 2025
    Review
  10. Article
  11. Review
4 · The record

Corrections and comments

PubMed lists nothing against this paper. Absence here is not a guarantee, only a check that was made.

5 · Who and what money

Authors and funding

13 authors at 12 institutions in 2 countries.

Richard J NowakDepartment of Neurology, Yale University School of Medicine, New Haven, Connecticut, USA.ORCID 0000-0001-8438-482X
Ari BreinerDivision of Neurology, Department of Medicine, The Ottawa Hospital and Ottawa Research Institute, University of Ottawa, Ottawa, Ontario, Canada.
Vera BrilEllen & Martin Prosserman Centre for Neuromuscular Diseases, University Health Network, University of Toronto, Toronto, Ontario, Canada.
Jeffrey A AllenDepartment of Neurology, University of Minnesota, Minneapolis, Minnesota, USA.
Shaida KhanDepartment of Neurology, UT Southwestern Medical Center, Dallas, Texas, USA.
Todd LevineHonorHealth Neurology dba Phoenix Neurological Associates, Phoenix, Arizona, USA.
Daniel H JacobsCollege of Medicine, University of Central Florida, Orlando, Florida, USA.
Gregory SahagianThe Neurology Center of Southern California, Carlsbad, California, USA.
Zaeem A SiddiqiDivision of Neurology, Department of Medicine, University of Alberta Hospital, Edmonton, Alberta, Canada.
Jing XuImmunovant Inc., New York, New York, USA.
William L MaciasImmunovant Inc., New York, New York, USA.
Michael BenatarDepartment of Neurology, University of Miami, Miami, Florida, USA.ORCID 0000-0003-4241-5135
ASCEND MG Study Group
Myovant Sciences (United States) · USAlberta Hospital Edmonton · CAHonorHealth · USNeurology Center of Southern California · USSan Antonio College · USSouthwestern Medical Center · USUniversity Health Network · CAUniversity of Central Florida · USUniversity of Miami · USUniversity of Minnesota · USUniversity of Ottawa · CAYale University · US

Funding

Yale Clinical and Translational Science Award (U Component)UL1TR001863 · NCATS · YALE UNIVERSITY · PI John H. Krystal, LUCILA OHNO-MACHADO · 2016 to 2026
$102.9M
NCATS NIH HHS UL1 TR001863
6 · The paper itself

Abstract

objectivesTo assess the safety, tolerability, and key pharmacodynamic effects of subcutaneous batoclimab, a fully human anti-neonatal Fc receptor monoclonal antibody, in patients with generalized myasthenia gravis and anti-acetylcholine receptor antibodies.

methodsA Phase 2a, proof-of-concept, randomized, double-blind, placebo-controlled trial is described. Eligible patients were randomized (1:1:1) to receive once-weekly subcutaneous injections of batoclimab 340 mg, batoclimab 680 mg, or matching placebo for 6 weeks. Subsequently, all patients could enter an open-label extension study where they received batoclimab 340 mg once every 2 weeks for 6 weeks. Primary endpoints were safety, tolerability, and change from baseline in total immunoglobulin G, immunoglobulin G subclasses, and anti-acetylcholine receptor antibodies at 6 weeks post-baseline. Secondary endpoints included changes from baseline to 6 weeks post-baseline for Myasthenia Gravis Activities of Daily Living, Quantitative Myasthenia Gravis, Myasthenia Gravis Composite, and revised 15-item Myasthenia Gravis Quality of Life scores.

resultsSeventeen patients were randomized to batoclimab 680 mg (n = 6), batoclimab 340 mg (n = 5), or placebo (n = 6). Batoclimab was associated with significantly greater reductions in total immunoglobulin G and anti-acetylcholine receptor antibodies from baseline to 6 weeks post-baseline than placebo. Reductions in immunoglobulin G subclasses were generally consistent with total immunoglobulin G. While clinical measures showed directionally favorable improvements over time, the study was not powered to draw conclusions about therapeutic efficacy. No safety issues were identified.

interpretationThe safety profile, pharmacodynamics, and preliminary clinical benefits observed in this study support further investigation of subcutaneous batoclimab injections as a potential patient-administered therapy for seropositive generalized myasthenia gravis.

Indexed as

Activities of Daily LivingMyasthenia GravisAntibodies, MonoclonalAutoantibodiesHumansImmunoglobulin GQuality of LifeReceptors, CholinergicAntibodies, MonoclonalAutoantibodiesImmunoglobulin GReceptors, Cholinergic

Identifiers

PMID38062618
PMCPMC10791011
OpenAlexW4389485847

What OpenQuestion holds

Textmetadata
LicenceCC BY
Read underepoch 390

Registered trials

None linked

Read under generation 80e0d062 · epoch 390. Bibliography from PubMed, PubMed Central and OpenAlex; grants from NIH RePORTER; trial links from ClinicalTrials.gov; estimates, votes and beliefs from the OpenQuestion graph.