Efficacy and safety of mirabegron for treatment of neurogenic detrusor overactivity in adults with spinal cord injury or multiple sclerosis: a systematic review.

STUDY DESIGN

Systematic review.

OBJECTIVE

To evaluate the efficacy and safety of mirabegron in patients with neurogenic detrusor overactivity due to SCI or MS.

METHODS

A comprehensive search of the Pubmed, Cochrane, Scopus, and Embase databases was performed. Studies evaluating adult patients with neurogenic detrusor overactivity due to SCI or MS were analyzed according to clinical and urodynamic outcome parameters.

RESULTS

A total of 488 patients were included in 11 studies, with sample sizes ranging from 15 to 91. The duration of the treatments varied from 4 weeks to 12 months. Mirabegron was used as a secondline treatment after anticholinergics in most of the studies. While clinical outcome parameters are used in studies involving only MS patients, urodynamic outcome parameters are also used in studies involving patients with SCI. The efficacy of mirabegron was found not to be different than anticholinergics when compared in MS patients. Comprehensive urodynamic evaluation was performed in 2 randomized, double-blind, placebo-controlled studies and no satisfactory results were obtained compared to placebo. In retrospective studies there were some significant improvements in P, MCC and compliance. The major safety concern with mirabegron is cardiovascular safety. In one study, tachyarrhythmia and palpitations reported in a patient with SCI at C6 level, in another study tachycardia reported in one patient with MS.

CONCLUSIONS

Although mirabegron demonstrates similar clinical efficacy to anticholinergics in MS patients, its effect on urodynamic parameters in patients with SCI cannot be considered satisfactory. It has a good safety profile with mild cardiovascular side effects.