Activated partial thromboplastin time prolongation without hemorrhagic dienhesis: a study of a chinese family coexisting with hereditary KNG1 p.Arg240 mutation and --SEA/αα genotype thalassemia.

Abstract excerpt

High molecular weight kininogen (HK) deficiency is a rare autosomal recessive disorder caused by mutations in the KNG1 gene. This study reports a 66-year-old male Chinese patient who presented with significantly prolonged activated partial thromboplastin time (aPTT) and microcytic hypochromic anemia. Whole-exome sequencing revealed a homozygous nonsense mutation in exon 6 of the KNG1 gene (c.718 C > T, p.Arg240*)...

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