Methotrexate as a Steroid-Sparing Agent in Myasthenia Gravis: A Preliminary Retrospective Study

imageObjectives:

Treatment approach of myasthenia gravis (MG) is still debated; corticosteroids alone or in combination with immunosuppressive agents are the most used drugs. Azathioprine (AZA) has been shown to be effective for MG with a significant steroid-sparing activity, although burdened by side effects. Few studies on methotrexate (MTX) administration showed controversial results. In this cohort, we evaluated the role of MTX as a effective steroid-sparing agent.

Methods:

Fifteen MG patients treated with MTX, previously treated with AZA for at least 12 months, with poor benefits and uncomfortable side effects AZA related, have been selected. Each patient was evaluated through MG-Activity of Daily Living and Quantitative MG scores 5 times/yr.

Results:

Patients treated with MTX had a significant improvement of MG-Activity of Daily Living and Quantitative MG scores. Furthermore, all patients reduced prednisone dosage, and none complained of side effects.

Conclusions:

We suggest MTX is effective and well tolerated and could be considered as a steroid-sparing agent in MG treatment.

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