Clinical and genetic characteristics of 17 Chinese patients with glycogen storage disease type IXa
2017
Zhang, Jiangwei | Yuan, Yuheng | Ma, Mingsheng | Liu, Yan | Zhang, Weimin | Yao, Fengxia | Qiu, Zhengqing
Glycogen storage disease (GSD) type IXa is caused by PHKA2 mutation, which accounts for about 75% of all the GSD type IX cases. Here we first summarized the clinical data and analyzed the PHKA2 gene of 17 Chinese male patients suspected of having GSD type IXa. Clinical symptoms of our patients included hepatomegaly, growth retardation, and liver dysfunction. The clinical and biochemical manifestations improved and even disappeared with age. We detected 14 mutations in 17 patients, including 8 novel mutations; exons 2 and 4 were hot spots in this research. In conclusion, glycogen storage disease type IXa is a mild disorder with a favorable prognosis, and there was no relationship between genotype and phenotype of this disease.
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