Guan ZY, Zhong ZY, He HL, Chen D, Zhong GX, Yang KX, Chen JH. Genetic counseling and prenatal decision for hemoglobin H disease caused by the rare α2 codon 30 (-GAG) (HBA2: c.91_93delGAG) mutation and the SEA deletion: Case series study.
Taiwan J Obstet Gynecol 2021;
60:763-765. [PMID:
34247821 DOI:
10.1016/j.tjog.2021.05.031]
[Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 02/08/2021] [Indexed: 11/26/2022] Open
Abstract
OBJECTIVE
We report a rare mutation on the α2-globin gene, HBA2: c.91_93delGAG and its potential functions.
CASE REPORT
We mainly described four patients with hemoglobin (Hb) H disease caused by the rare mutation and the SEA deletion but diversity in clinical presentation. Two had survived to adulthood with normal physical and mental development, except for mild anemia. However, two were children, who had more severe clinical manifestations. One child had developmental disorders of speech and language and mild growth retardation, and the other child suffered from severe hemolytic crises precipitated by infection and received blood transfusion.
CONCLUSION
This study is of great significance for clinicians to provide genetic counseling to couples at-risk of having offspring with Hb H disease and let them make the pregnancy decision, particularly reduce the occurrence of severe Hb H disease.
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