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Short- and long-term outcome of chronic pallidal neurostimulation in monogenic isolated dystonia.

Abstract：

OBJECTIVES:Deep brain stimulation of the internal pallidum (GPi-DBS) is an established therapeutic option in treatment-refractory dystonia, and the identification of factors predicting surgical outcome is needed to optimize patient selection. METHODS:In this retrospective multicenter study, GPi-DBS outcome of 8 patients with DYT6, 9 with DYT1, and 38 with isolated dystonia without known monogenic cause (non-DYT) was assessed at early (1-16 months) and late (22-92 months) follow-up using Burke-Fahn-Marsden Dystonia Rating Scale (BFMDRS) scores. RESULTS:At early follow-up, mean reduction of dystonia severity was greater in patients with DYT1 (BFMDRS score: -60%) and non-DYT dystonia (-52%) than in patients with DYT6 dystonia (-32%; p = 0.046). Accordingly, the rate of responders was considerably lower in the latter group (57% vs >90%; p = 0.017). At late follow-up, however, GPi-DBS resulted in comparable improvement in all 3 groups (DYT6, -42%; DYT1, -44; non-DYT, -61%). Additional DBS of the same or another brain target was performed in 3 of 8 patients with DYT6 dystonia with varying results. Regardless of the genotype, patients with a shorter duration from onset of dystonia to surgery had better control of dystonia postoperatively. CONCLUSIONS:Long-term GPi-DBS is effective in patients with DYT6, DYT1, and non-DYT dystonia. However, the effect of DBS appears to be less predictable in patients with DYT6, suggesting that pre-DBS genetic testing and counseling for known dystonia gene mutations may be indicated. GPi-DBS should probably be considered earlier in the disease course. CLASSIFICATION OF EVIDENCE:This study provides Class IV evidence that long-term GPi-DBS improves dystonia in patients with DYT1, DYT6, and non-DYT dystonia.

journal_name

Neurology

journal_title

Neurology

authors

Brüggemann N,Kühn A,Schneider SA,Kamm C,Wolters A,Krause P,Moro E,Steigerwald F,Wittstock M,Tronnier V,Lozano AM,Hamani C,Poon YY,Zittel S,Wächter T,Deuschl G,Krüger R,Kupsch A,Münchau A,Lohmann K,Volkmann J,Kle

doi

10.1212/WNL.0000000000001312

subject

Has Abstract

pub_date

2015-03-03 00:00:00

pages

895-903

issue

eissn

0028-3878

issn

1526-632X

pii

WNL.0000000000001312

journal_volume

pub_type

杂志文章,多中心研究

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Short- and long-term outcome of chronic pallidal neurostimulation in monogenic isolated dystonia.