Brain stimulation may improve spinocerebellar ataxia scores, but evidence remains uncertain
Trials comparing magnetic brain stimulation with sham found lower ataxia scores. Lasting benefits and quality-of-life effects remain uncertain.
Based on the published abstract. The full paper may contain additional methods, results and limitations.
The 30-second takeaway
Based on the abstract, repetitive transcranial magnetic stimulation may modestly improve ataxia severity immediately after treatment compared with sham. Confidence in the overall symptom findings was low or very low. Speech showed no statistically significant improvement, and evidence was insufficient to establish lasting benefits or effects on quality of life.
Small trials differed substantially and mainly involved Asian participants with SCA3. Brief follow-up and insufficient evidence on quality of life limit how widely the results apply.
What researchers found
Mean difference in overall ataxia severity
Immediately after treatment versus sham stimulation; the negative difference favors stimulation. ICARS means International Cooperative Ataxia Rating Scale. Evidence certainty was low.
Movement scores
Scores for posture, walking and limb function favored stimulation. The review rated evidence for these specific movement domains as more certain than the evidence for overall ataxia severity.
Safety remains uncertain
No serious adverse events were reported. Other adverse events and withdrawals did not differ significantly, but confidence in the safety evidence was low. These findings do not establish equal safety.
The original publication
Evaluating Repetitive Transcranial Magnetic Stimulation in Spinocerebellar Ataxia: A Meta-Analysis of Efficacy and Safety.
Martín-López JE, Ruiz-Ramos A, Rosario-Lozano MP et al.
Cerebellum · 2025
- PubMed ID
- 41366124
- Record checked
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