Application of third-generation sequencing technology in the genetic testing of thalassemia

Abstract Thalassemia is an autosomal recessive genetic disorder and a common form of Hemoglobinopathy. It is classified into α-thalassemia and β-thalassemia. This disease is mainly prevalent in tropical and subtropical regions, including southern China. Severe α-thalassemia and intermediate α-thalas...

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Main Authors: Weihao Li, Yanchou Ye
Format: Article
Language:English
Published: BMC 2024-12-01
Series:Molecular Cytogenetics
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Online Access:https://doi.org/10.1186/s13039-024-00701-4
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author Weihao Li
Yanchou Ye
author_facet Weihao Li
Yanchou Ye
author_sort Weihao Li
collection DOAJ
description Abstract Thalassemia is an autosomal recessive genetic disorder and a common form of Hemoglobinopathy. It is classified into α-thalassemia and β-thalassemia. This disease is mainly prevalent in tropical and subtropical regions, including southern China. Severe α-thalassemia and intermediate α-thalassemia are among the most common birth defects in southern China. Intermediate α-thalassemia, also known as Hb H disease, is characterized by moderate anemia. Severe α-thalassemia, also known as Hb Bart’s Hydrops fetalis syndrome, is a fatal condition. Infants with severe β-thalassemia do not show symptoms at birth but develop severe anemia later, requiring expensive treatment. Most untreated patients with severe β-thalassemia die in early childhood. Screening for thalassemia carriers and genetic diagnosis in high-prevalence areas significantly reduce the incidence of severe thalassemia. This review aims to summarize the genetic diagnostic approaches for thalassemia. Conventional genetic testing methods can identify 95–98% of thalassemia carriers but may miss rare thalassemia genotypes. Third-Generation Sequencing offers significant advantages in complementing other genetic diagnostic approaches, providing a basis for genetic counseling and prenatal diagnosis.
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spelling doaj-art-61d6146ce2db4dfbb39caa70b99f1e062024-12-22T12:49:42ZengBMCMolecular Cytogenetics1755-81662024-12-011711810.1186/s13039-024-00701-4Application of third-generation sequencing technology in the genetic testing of thalassemiaWeihao Li0Yanchou Ye1Reproductive Medicine Center, The Seventh Affiliated Hospital of Sun Yat-sen UniversityPrenatal Diagnostic Center, Medical Genetics Center, Department of Obstetrics and Gynaecology, The Seventh Affiliated Hospital of Sun Yat-sen UniversityAbstract Thalassemia is an autosomal recessive genetic disorder and a common form of Hemoglobinopathy. It is classified into α-thalassemia and β-thalassemia. This disease is mainly prevalent in tropical and subtropical regions, including southern China. Severe α-thalassemia and intermediate α-thalassemia are among the most common birth defects in southern China. Intermediate α-thalassemia, also known as Hb H disease, is characterized by moderate anemia. Severe α-thalassemia, also known as Hb Bart’s Hydrops fetalis syndrome, is a fatal condition. Infants with severe β-thalassemia do not show symptoms at birth but develop severe anemia later, requiring expensive treatment. Most untreated patients with severe β-thalassemia die in early childhood. Screening for thalassemia carriers and genetic diagnosis in high-prevalence areas significantly reduce the incidence of severe thalassemia. This review aims to summarize the genetic diagnostic approaches for thalassemia. Conventional genetic testing methods can identify 95–98% of thalassemia carriers but may miss rare thalassemia genotypes. Third-Generation Sequencing offers significant advantages in complementing other genetic diagnostic approaches, providing a basis for genetic counseling and prenatal diagnosis.https://doi.org/10.1186/s13039-024-00701-4Α-thalassemiaΒ-thalassemiaGenetic diagnosisThird-generation sequencingRare thalassemia genotypes
spellingShingle Weihao Li
Yanchou Ye
Application of third-generation sequencing technology in the genetic testing of thalassemia
Molecular Cytogenetics
Α-thalassemia
Β-thalassemia
Genetic diagnosis
Third-generation sequencing
Rare thalassemia genotypes
title Application of third-generation sequencing technology in the genetic testing of thalassemia
title_full Application of third-generation sequencing technology in the genetic testing of thalassemia
title_fullStr Application of third-generation sequencing technology in the genetic testing of thalassemia
title_full_unstemmed Application of third-generation sequencing technology in the genetic testing of thalassemia
title_short Application of third-generation sequencing technology in the genetic testing of thalassemia
title_sort application of third generation sequencing technology in the genetic testing of thalassemia
topic Α-thalassemia
Β-thalassemia
Genetic diagnosis
Third-generation sequencing
Rare thalassemia genotypes
url https://doi.org/10.1186/s13039-024-00701-4
work_keys_str_mv AT weihaoli applicationofthirdgenerationsequencingtechnologyinthegenetictestingofthalassemia
AT yanchouye applicationofthirdgenerationsequencingtechnologyinthegenetictestingofthalassemia