Evidence map›Paper›PMID 32700461›Full record

Trial reportAnnals of clinical and translational neurology2020

Consistent improvement with eculizumab across muscle groups in myasthenia gravis.

Renato Mantegazza, Fanny L O'Brien, Marcus Yountz, James F Howard, REGAIN study group

2 registry-linked trialsOpen access · goldAbstract readClinical Trial, Phase IIIRandomized Controlled Trial
In one paragraph

Trial report in Annals of clinical and translational neurology, 2020. The graph could read no effect estimate from its abstract, so it casts no vote on the map. It is linked to 2 registered trials, which are not on this map. Cited by 26 papers, 1 of them a synthesis that pooled it.

0numbers the graph read from it
0cells of the map it votes in
26citing papers in PubMed, 1 pooled it
1.3field-weighted citation impact, top 16% 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.

NCT01997229 phase3completednot on this map

A Randomized, Double-Blind, Placebo-Controlled, Multi-Center Study to Evaluate the Safety and Efficacy of Eculizumab in Subjects With Refractory Generalized Myasthenia Gravis (gMG)

TypeinterventionalSponsorAlexion Pharmaceuticals, Inc.Ran2013 to 2016Enrolled125ConditionsRefractory Generalized Myasthenia GravisArmsEculizumab, Placebo
NCT02301624 phase3completednot on this map

A Phase III, Open-label Extension Trial of ECU-MG-301 to Evaluate the Safety and Efficacy of Eculizumab in Subjects With Refractory Generalized Myasthenia Gravis (gMG)

TypeinterventionalSponsorAlexion Pharmaceuticals, Inc.Ran2014 to 2019Enrolled117ConditionsRefractory Generalized Myasthenia GravisArmsEculizumab, Placebo
3 · Its place in the literature

Who cites it

26 citing papers in PubMed, 1 synthesis or guideline pooled it, 35 citations in OpenAlex.

  1. Pooled it
  2. Trial
  3. Italian recommendations for the diagnosis and treatment of myasthenia gravis.Neurological sciences : official journal of the Italian Neurological Society and of the Italian Society of Clinical Neurophysiology · 2026
    Article
  4. Article
  5. Review
  6. Article
  7. Review
  8. Therapeutic challenges and unmet needs in the management of myasthenia gravis: an Italian expert opinion.Neurological sciences : official journal of the Italian Neurological Society and of the Italian Society of Clinical Neurophysiology · 2024
    Review
  9. Article
  10. Article
  11. Article
  12. Article
  13. Review
  14. Article
  15. Eculizumab in thymoma-associated myasthenia gravis: a real-world cohort study.Therapeutic advances in neurological disorders · 2024
    Article
  16. Article
  17. Review
  18. Review
  19. Article
  20. Anti-complement Agents for Autoimmune Neurological Disease.Neurotherapeutics : the journal of the American Society for Experimental NeuroTherapeutics · 2022
    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

5 authors at 4 institutions in 2 countries.

Renato MantegazzaNeuroimmunology and Neuromuscular Diseases Unit, Fondazione IRCCS Istituto Neurologico Carlo Besta, Milan, Italy.ORCID 0000-0002-9810-5737
Fanny L O'BrienAlexion Pharmaceuticals, Boston, MA.
Marcus YountzAlexion Pharmaceuticals, Boston, MA.
James F HowardDepartment of Neurology, University of North Carolina, Chapel Hill, NC.ORCID 0000-0002-7136-8617
REGAIN study group
Alexion Pharmaceuticals (United States) · USFondazione IRCCS Istituto Neurologico Carlo Besta · ITLackland Independent School District · USUniversity of North Carolina at Chapel Hill · US

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

objectiveTo assess whether eculizumab, a terminal complement inhibitor, improves patient- and physician-reported outcomes (evaluated using the myasthenia gravis activities of daily living profile and the quantitative myasthenia gravis scale, respectively) in patients with refractory anti-acetylcholine receptor antibody-positive generalized myasthenia gravis across four domains, representing ocular, bulbar, respiratory, and limb/gross motor muscle groups.

methodsPatients with refractory anti-acetylcholine receptor antibody-positive generalized myasthenia gravis were randomized 1:1 to receive either placebo or eculizumab during the REGAIN study (NCT01997229). Patients who completed REGAIN were eligible to continue into the open-label extension trial (NCT02301624) for up to 4 years. The four domain scores of each of the myasthenia gravis activities of daily living profile and the quantitative myasthenia gravis scale recorded throughout REGAIN and through 130 weeks of the open-label extension were analyzed.

resultsOf the 125 patients who participated in REGAIN, 117 enrolled in the open-label extension; 61 had received placebo and 56 had received eculizumab during REGAIN. Patients experienced rapid improvements in total scores and all four domain scores of both the myasthenia gravis activities of daily living profile and the quantitative myasthenia gravis scale with eculizumab treatment. These improvements were sustained through 130 weeks of the open-label extension.

interpretationEculizumab treatment elicits rapid and sustained improvements in muscle strength across ocular, bulbar, respiratory, and limb/gross motor muscle groups and in associated daily activities in patients with refractory anti-acetylcholine receptor antibody-positive generalized myasthenia gravis.

Indexed as

Outcome Assessment, Health CareActivities of Daily LivingAdultAntibodies, Monoclonal, HumanizedComplement Inactivating AgentsDouble-Blind MethodHumansMuscle, SkeletalMuscle StrengthMyasthenia GravisPatient Reported Outcome MeasuresSeverity of Illness IndexAntibodies, Monoclonal, HumanizedComplement Inactivating Agentseculizumab

Identifiers

PMID32700461
PMCPMC7448154
OpenAlexW3045082024

What OpenQuestion holds

Textmetadata
LicenceCC BY
Read underepoch 390

Registered trials

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.