A multicenter prospective observational study on the safety and efficacy of tacrolimus in patients with myasthenia gravis

Suk Won Ahn, In Soo Joo, Byung Jo Kim, Jung Joon Sung, Sa Youn Kang, Jeeyoung Oh, Yang Ki Minn, Bum Chun Suh, Sun Young Oh, Yoon Ho Hong, Tai Seung Nam, Jung Im Seok, Young Eun Park, Ha Young Shin, Eun Bin Cho, Je Young Shin, Hung Youl Seok, Jin Sung Park, Ju Hong Min, Jin Myoung SeokByoung Joon Kim

Research output: Contribution to journalArticlepeer-review

11 Citations (Scopus)


Introduction Several clinical studies using tacrolimus revealed reasonable therapeutic mechanisms and efficacy in patients with myasthenia gravis (MG). However, long-period studies in a large number of patients with MG are limited; therefore, the aim of this study was to investigate the therapeutic efficacies and safety of tacrolimus in patients with MG during a 12-month follow-up period. Methods Tacrolimus was administered to 150 patients with MG who were recruited based on the inclusion criteria. Fifteen medical centers in Korea participated in this study. The efficacy of tacrolimus was assessed using MG composite scales (MGCS) and the prednisolone-sparing effect. And the adverse drug reactions (ADRs) of tacrolimus were monitored in each patient from the beginning of tacrolimus treatment to the end of the follow-up period. Results After starting tacrolimus, the 32 patients were affected by ADRs, and consequentially 134 patients of the enrolled patients were followed up for 12 months. They showed that the mean prednisolone dosage significantly decreased (6.1 ± 7.6 mg/day), compared to that in the baseline (11.3 ± 9.5 mg/day), and MGCS significantly improved after 12 months of tacrolimus treatment, compared to that at the baseline. Conclusions Our study showed that tacrolimus would be an effective immunosuppressant as an initial therapeutic agent in patients with MG; in addition, it showed tolerable safety profiles during the 12-month follow-up evaluation.

Original languageEnglish
Pages (from-to)271-275
Number of pages5
JournalJournal of the Neurological Sciences
Publication statusPublished - 2017 Aug 15
Externally publishedYes

Bibliographical note

Publisher Copyright:
© 2017


  • ADR
  • MG
  • MGCS
  • Myasthenia gravis
  • Prednisolone
  • Tacrolimus

ASJC Scopus subject areas

  • Neurology
  • Clinical Neurology


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