Beta-agonist Efficacy and Tolerability as Adjuvant Therapy in Myasthenia Gravis

Last updated: April 2, 2020
Sponsor: University of Aarhus
Overall Status: Active - Recruiting

Phase

2/3

Condition

Neuropathy

Sarcopenia

Polymyositis (Inflammatory Muscle Disease)

Treatment

N/A

Clinical Study ID

NCT03914638
BETA-MG-01
  • Ages > 18
  • All Genders

Study Summary

This study examines the effect of adjuvant therapy with the oral beta-agonist Salbutamol in patients with generalized myasthenia gravis on stable standard of care having residual symptoms.

Eligibility Criteria

Inclusion

Inclusion Criteria:

  • Generalized myasthenia gravis (MGFA IIa-IVb) at screening, verified by ≥ 1 of thefollowing: 1) AchR-antibodies in medical history, 2) Abnormal decrement on repetitivenerve stimulation in medical history

  • Disease duration of ≥ 1 year

  • Stable dose of antimyasthenic medications at screening

  • Residual symptoms with a MG-QOL15 score of ≥ 10

  • Age ≥ 18 years

  • Ability to understand the requirements of the trial and provide written, informedconsent

Exclusion

Exclusion Criteria:

  • Evidence of malignancy ≤ 3 years prior to screening, unless deemed completely cured

  • Thymectomy ≤ 6 months prior to screening

  • Impending MG crisis or respiratory insufficiency

  • Worsening of MG symptoms due to other diseases or medications (e.g. infection,beta-blockers, aminoglycosides, etc.)

  • Other factor(s) or medical condition(s) that may explain residual symptoms

  • Pregnancy or breast-feeding

  • Treatment with beta-agonists

  • Uncontrolled diabetes

  • Ischemic Heart Disease, Cardiac Arrhythmia or Heart Failure (including hypertrophiccardiomyopathy)

  • Uncontrolled Hypertension (≥ 160/110)

  • Known hypersensitivity to any of the study drug components

  • Treatment with tricyclic antidepressants, monoamineoxidase inhibitors, digoxine, ormethylxanthines.

Study Design

Total Participants: 30
Study Start date:
April 01, 2019
Estimated Completion Date:
October 31, 2021

Study Description

Myasthenia Gravis (MG) causes various degrees of increased muscular fatigue and ocular, bulbar, respiratory and extremity symptoms.

Residual symptoms often remain despite treatment with acetylcholinesterase inhibitors and immunosuppressive agents. Escalation of immunosuppressive treatment may provide additional benefit but is associated with potentially severe side effects, and high economic costs.

Treatment with beta-agonists has been investigated in animal models of MG, and in small, randomized pilot studies of generalized MG. Adjuvant therapy with oral beta-agonists in MG may be safe and cheap and may improve symptoms.

The trial will examine the tolerability and efficacy of adjuvant therapy with the oral beta-agonist Salbutamol in patients with generalized myasthenia gravis on stable standard of care having residual symptoms.

Present study is an investigator-initiated, randomized, placebo-controlled, rater and subject-blinded crossover study.

Study consists of Screening Period (4 weeks), Treatment Period 1 (8 weeks), Washout Period (4 weeks), Treatment Period 2 (8 weeks).

Connect with a study center

  • Department of Neurology, Aalborg University Hospital

    Aalborg, 9000
    Denmark

    Active - Recruiting

  • Neurology, Aarhus University Hospital

    Aarhus, 8200
    Denmark

    Active - Recruiting

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