Identification of mutations in patients with acquired pure red cell aplasia

Acta Biochimica Et Biophysica Sinica
Xinchao ZhangWeiwei Shen

Abstract

Idiopathic acquired pure red cell aplasia (PRCA) is a rare, autoimmune-related disease. This study aimed to describe the previously unidentified DNA alterations associated with PRCA. Here, next generation sequencing using a panel containing 295 critical genes was applied to detect potentially pathogenic mutations in four patients with PRCA. A total of 529 mutations were identified and further classified into three categories, namely, uncertain (n = 25), likely benign (n = 20) and benign (n = 484) mutations, based on the American College of Medical Genetics and Genomics (ACMG) 2015 guidelines and ClinVar database. The spatial proximity between two loci of the uncertain or benign mutations was evaluated using Hi-C datasets of KBM7 and K562 cell lines, respectively. Significant spatial proximity was observed in uncertain mutation pairs compared with benign mutation pairs. In addition, 17 variants were eventually identified after excluding those with mutant frequencies >0.001, including 7 newly identified variants. FANCF and LRP1B mutations existed twice in patients. FANCF and LRP1B mutations were likely to affect protein stability based on prediction analysis. Taken together, our data may provide valuable information about PRCA. F...Continue Reading

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Citations

Dec 18, 2020·Frontiers in Oncology·Wen-Long GuanFeng-Hua Wang
Mar 4, 2021·Blood·Carmelo Gurnari, Jaroslaw P Maciejewski

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