Genetic mutation analysis of hereditary spherocytosis in Guangxi Zhuang Autonomous Region

Journal of Hematopathology - Tập 16 - Trang 95-101 - 2023
Xingyuan Chen1,2, Lin Liao1, Yangyang Wu1, Liqun Xiang1, Yumei Qin1, Meiling Luo1, Faquan Lin1
1Key Laboratory of Clinical Laboratory Medicine of GuangxiDepartment of EducationDepartment of Clinical Laboratory, the First Affiliated Hospital of Guangxi Medical University, Nanning, China
2Department of Laboratory Medicine, Guangxi Hospital Division of The First Affiliated Hospital, Sun Yat-Sen University, Nanning, China

Tóm tắt

Hereditary spherocytosis (HS) is a common, hereditary hemolytic anemia (HHA) that is attributed to the disturbance of five erythrocyte membrane proteins. HS is also common in Guangxi, China. Target region capture high-throughput sequencing technology was used to analyze genetic mutations found in HS patients. Pedigree analysis was also performed, in some cases, to provide an optimized approach for the etiological diagnosis of complex, hereditary hemolytic anemia. Blood samples from the probands and their families were assessed by laboratory tests, target region capture high-throughput sequencing technology, and Sanger sequencing. We detected 79 HS patients from 37 unrelated families. The mutations observed in these patients were found mainly in four HS-related genes. These included SLC4A1, which was mutated in 31.65% of patients (25/79), SPTA1 (30.78% (24/79)), EPB42 (6.33% (5/79)), and SPTB (5.06% (4/79)). Composite genotype was observed in 26.58% (21/79) of patients and included mutations in two or more HS-related genes or mutations in HS-related genes combined with thalassemia or G6PD deficiency. No significant differences in clinical symptoms were found among patients of various genotypes except total bilirubin. Mean reticulocyte volume (MRV) and mean sphered cell volume (MSCV) of the composite genotype were significantly different from other groups. A total of 28 mutation types were found in HS-related genes. Using high-throughput sequencing technology, we also found some cases that had been misdiagnosed. MRV and MSCV are more significant in compound mutations as sensitive determinants of HS. High-throughput sequencing technology can be used to provide a more effective etiological diagnostic method for HS, with high efficiency and specificity.

Tài liệu tham khảo

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