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Objective  To reveal the prevalence and molecular characterization of (δβ) 0 ‐thalassemia [(δβ) 0 ‐thal] and hereditary persistence of fetal hemoglobin ( HPFH ) in the Chinese Zhuang population.    Methods  A total of 105 subjects with fetal hemoglobin (Hb F) level ≥5% from 14 204 unrelated ones were selected for the study. Multiplex ligation dependent probe amplification was firstly used to analyze dosage changes of the β‐globin gene cluster for associated with (δβ) 0 ‐thal and  HPFH  mutations. The gap polymerase chain reaction was then performed to identify the deletions using the respective flanking primers. Hematologic data were recorded and correlated with the molecular findings.    Results  Twenty‐one (0.15%) subjects were diagnosed with Chinese  G γ( A γδβ) 0 ‐thal. Nine (0.06%) were diagnosed with Southeast Asia  HPFH  ( SEA ‐ HPFH ) deletion. Seventy‐five (0.53%) cases remained uncharacterized. Three genotypes for Chinese  G γ( A γδβ) 0 ‐thal and  SEA ‐ HPFH  deletion were identified, respectively. The genotype‐phenotype relationships were discussed.    Conclusion  Our study for the first time demonstrated that (δβ) 0  and  HPFH  were not rare events, and molecular characterized  G γ( A γδβ) 0 ‐thal and  HFPH  mutations in the Chinese Zhuang population. The findings in our study will be useful in genetic counseling and prenatal diagnostic service of β‐thalassemia in this populations.

The prevalence and molecular characterization of (δβ) 0 ‐thalassemia and hereditary persistence of fetal hemoglobin in the Chinese Zhuang population