ABSTRACT
Objective@#To investigate the relationship between the erythrocyte membrane protein gene mutations and the clinical severity of hereditary spherocytosis (HS).@*Methods@#Targeted sequencings were performed on 25 HS patients, correlation between HS mutations and patients’ clinical characteristics were evaluated.@*Results@#A total of 25 HS patients were enrolled, including 13 males and 12 females with median age of 20 (4-55) years, including 9 compensatory hemolysis patients, 9 patients with mild anemia, 3 patients with moderate anemia and 4 patients with severe anemia. Of them, 18 patients (72%) harbored HS-related mutations, including ANK1 mutation in 6 cases, SLC4A1 mutation in 6 cases, SPTB mutation in 5 cases and 1 case with EPB41 mutation. Seven patients (28%) didn’t carry common HS mutations. SPTB and SLC4A1 mutations mainly affected male patients. There was no significant difference between the age of diagnosis (P=0.130) and HGB level (P=0.585) in patients with HS mutation and those without mutation, however, the EMA binding fluorescence intensity (P=0.015), AGLT50 (P=0.032) and EOF minimal hemolytic concentration (P=0.027) were significantly different in these two groups of HS patients.@*Conclusion@#To screen erythrocyte membrane protein coding gene mutations could favor the diagnosis of HS, and patients without mutations have mild clinical phenotype.
ABSTRACT
Fanconi anemia performs (FA) great clinical heterogeneity. Although the identification of FA related genes extends the recognition of FA pathogenesis, few stringent genotype-phenotype connections have emerged. For the same FA genotype patients, it seems that type of mutation influences clinical phenotype more importantly, Modifier genes,environmental factor, can also result in obviously different clinical phenotype. Different from multiple genotypes and multiple clinical phenotypes, FA cellular phenotype is characteristic, and is the most important basis of diagnosis.