Genetic research and clinical analysis of deletional Chinese Gγ+(Aγδβ)0 -thalassemia and Southeast Asian HPFH in South China.

Abstract:

:Chinese Gγ+(Aγδβ)0-thalassemia and SEA-HPFH are the most common types of β-globin gene cluster deletion in Chinese population. The aim of the study was to analyze clinical features of deletional Chinese Gγ+(Aγδβ)0-thalassemia and Southeast Asian hereditary persistence of fetal hemoglobin (SEA-HPFH) in South China. A total of 930 subjects with fetal hemoglobin (HbF) level ≥ 2% were selected on genetic research of Chinese Gγ+(Aγδβ)0-thalassemia and SEA-HPFH. The gap polymerase chain reaction was performed to identify the deletions. One hundred cases of Chinese Gγ+(Aγδβ)0-thalassemia were detected, including 90 cases of Chinese Gγ+(Aγδβ)0/βN-thalassemia, 7 cases of Chinese Gγ+(Aγδβ)0 /βN-thalassemia combined with α-thalassemia, 2 cases of Chinese Gγ+(Aγδβ)0-thalassemia combined with β-thalassemia, and 1 case of Chinese Gγ+(Aγδβ)0-thalassemia combined with β-gene mutation. One hundred nine cases of SEA-HPFH were detected, including 97 cases of SEA-HPFH/βN, 9 cases of SEA-HPFH/βN combined with α-thalassemia, 2 cases of SEA-HPFH combined with β-thalassemia, and 1 case of SEA-HPFH combined with β-gene mutation. Statistical analysis indicates significant differences in MCV (mean corpuscular volume), MCH (mean corpuscular hemoglobin), and HbA2 and HbF levels between Chinese Gγ+(Aγδβ)0-thalassemia heterozygotes and SEA-HPFH heterozygotes (P < 0.001). There are statistical differences in hematological parameters between them. Clinical phenotypic analysis can provide guidance for genetic counseling and prenatal diagnosis.

journal_name

Ann Hematol

journal_title

Annals of hematology

authors

Wu Y,Yao Q,Zhong M,Wu J,Xie L,Su L,Yu F

doi

10.1007/s00277-020-04252-7

subject

Has Abstract

pub_date

2020-12-01 00:00:00

pages

2747-2753

issue

12

eissn

0939-5555

issn

1432-0584

pii

10.1007/s00277-020-04252-7

journal_volume

99

pub_type

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