DEL in China: the D antigen among serologic RhD-negative individuals

Journal of Translational Medicine

Qinan Yin¹  Willy Albert Flegel¹ 

[1] Laboratory Services Section, Department of Transfusion Medicine, NIH Clinical Center, National Institutes of Health;

关键词: Rh blood group;    RhD-negative;    Ethnicity;    Pregnancy;    Transfusion;    RhIG;   

DOI  :  10.1186/s12967-021-03116-6

来源: DOAJ

【 摘 要 】

Abstract Background Providing RhD-negative red cell transfusions is a challenge in East Asia, represented by China, Korea, and Japan, where the frequency of RhD-negative is the lowest in the world. Findings Among 56 ethnic groups in China, the RhD-negative frequency in Han, the prevalent ethnicity, is 0.5% or less, similar to most other ethnic groups. The Uyghur ethnic group has the highest reported RhD-negative frequency of up to 4.7%, as compared to 13.9% in the US. However, an estimated 7.15 million RhD-negative people live in China. The RhD-negative phenotype typically results from a loss of the entire RHD gene, causing the lack of the RhD protein and D antigen. The DEL phenotype carries a low amount of the D antigen and types as RhD-negative in routine serology. The DEL prevalence in RhD-negative individuals averages 23.3% in the Han, 17% in the Hui and 2.4% in the Uyghur ethnicities. The Asian type DEL, also known as RHD*DEL1 and RHD:c.1227G > A allele, is by far the most prevalent among the 13 DEL alleles observed in China. Conclusion The purpose of this review is to summarize the data on DEL and to provide a basis for practical strategy decisions in managing patients and donors with DEL alleles in East Asia using molecular assays.

【 授权许可】

Unknown