Screening for Fabry's disease in young patients with ischemic stroke in a Chinese population.

ABSTRACT

PURPOSE: Fabry disease is an X-linked lysosomal storage disorder frequently associated with cerebrovascular disease. Data regarding Fabry disease and ischemic stroke has been lacking in China. In this study, we investigated the prevalence of Fabry disease and the distribution of the alpha-galactosidase A (α-GalA) gene - GLA mutations in young stroke patients in the Chinese population and its association with stroke subtypes. METHODS: A total of 357 ischemic stroke patients admitted to Xuanwu Hospital of Capital Medical University, aged 18-55 years old, including 293 patients with cerebral infarction and 64 patients with transient ischemic attack, were enrolled in this study. Mutations in the GLA gene were screened by Sanger sequencing. Enzyme levels were measured to further confirm the disease in patients with the gene mutation. The mutation frequency was compared among different stroke subtypes and further compared with the control group individually. RESULTS: No pathogenic mutations in the coding regions of the GLA gene were identified in this group of patients and thus no Fabry disease was found in our study. However, the frequency of an intronic polymorphism c.-10C>T was significantly different among different Trial of Org 10172 in Acute Stroke Treatment subtypes (p < 0.01). The frequency of the c.-10C>T polymorphism in patients with stroke due to other causes and undetermined causes was much higher than that in the control group (OR = 3.18, 95% CI 1.29-7.83, p < 0.01). CONCLUSIONS: Fabry disease is a rare disease, and it will not benefit to screen all stroke patients. In addition, our results suggested that the c.-10C>T polymorphism may be a risk factor for ischemic stroke of other and undetermined causes. Further study is required to confirm our findings.