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Abstract：
Congenital erythrocytosis is a rare and hereditary disorder of red blood cell (RBC) production that can be caused by high oxygen affinity hemoglobin (Hb) variants. We applied a genetic approach including whole exome sequencing and Sanger sequencing. We identified a heterozygous β-globin gene (Hb San Diego or HBB: c.328G>A) in exon 3 as a causative germline mutation in a Chinese family with congenital erythrocytosis. We concluded that in erythrocytosis with a dominant inheritance and normal or inappropriately high erythropoietin (EPO) levels, the high oxygen affinity Hb variants should be considered. In addition, as a tool for identification of mutations in congenital erythrocytosis, whole exome sequencing improves diagnostic accuracy and provides the opportunity for discovery of novel variants.
摘要：
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