PROM1 and Parkinson disease: In the latter cases, the increase of CD133 was observed in patients with atypical parkinsonism [two patients; 357% ± 90% (SD) or 54% (SEM); p = 0.03], patients with parkinson disease showed only a trend toward increased CD133 [four patients; 167% ± 60% (SD) or 30% (SEM); p = 0.076].