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Investigating the Pathogenesis of MYH7 Mutation Gly823Glu in Familial Hypertrophic Cardiomyopathy using a Mouse Model
Published on: August 8, 2022
Hemoglobin Alpha Chain Variant Zara Associated With Familial Asymptomatic Hypoxemia
Anthony Pasquarella1, Erin Miller1, Edward C C Wong2
1Division of Oncology-Hematology, Department of Medicine, NYU Long Island School of Medicine, NYU Perlmutter Cancer Center, Mineola, NY, USA.
Abstract:
Numerous hemoglobin (Hb) gene mutations have been identified, leading to a spectrum of phenotypes ranging from asymptomatic carrier states to complicated hemolytic anemias. We report a rare case of asymptomatic hypoxemia in a father and his teenage daughter both of whom were found to be carriers of Hb gene variant Zara. Workup for alternative cardiovascular causes of hypoxemia was unremarkable. Further sequencing of the alpha globin locus showed both individuals to be heterozygous for the Hb Zara c.274C>A (p.Leu92Ile) variant of unknown significance in the alpha2-globin gene. This is the first documented association of this Hb variant with familial asymptomatic hypoxemia, highlighting the importance of evaluating for hemoglobinopathies in patients with reduced oxygen saturation.
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