Wang JF, Ma L, Gong XH, Cai C, Sun JJ. Severe hyperbilirubinemia in a neonate with hereditary spherocytosis due to a
de novo ankyrin mutation: A case report.
World J Clin Cases 2021;
9:5245-5251. [PMID:
34307574 PMCID:
PMC8283574 DOI:
10.12998/wjcc.v9.i19.5245]
[Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 01/30/2021] [Revised: 05/10/2021] [Accepted: 05/18/2021] [Indexed: 02/06/2023] Open
Abstract
BACKGROUND
Hereditary spherocytosis (HS) is a common type of hemolytic anemia caused by a red cell membrane disorder. HS type 1 (HS1) is mostly caused by mutations in ankyrin (ANK1). Newborns with HS1 usually only exhibit anemia and mild jaundice. We herein report a case of HS1 and discuss its clinical characteristics.
CASE SUMMARY
A 2-d-old male full-term newborn was admitted to our hospital with severe, intractable neonatal jaundice. Laboratory investigations showed hemolytic anemia and hyperbilirubinemia and excluded immune-mediated hemolysis. The patient underwent two exchange transfusions and one plasmapheresis resulting in significantly reduced serum bilirubin. Hematologic analyses and genomic DNA sequencing studies were performed. The trio clinical exome sequencing revealed a de novo null heterozygous mutation in the patient's ANK1 gene: c.841C > T(p.Arg281Ter). This mutation results in the premature termination of the ANK1 protein.
CONCLUSION
Our case demonstrates that genetic analysis can be an essential method for diagnosing HS when a newborn has severe hyperbilirubinemia.
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