Genotyping of samples lacking expected antibodies in ABO blood group.
We report nine donations with ABO inconsistency in reverse typing caused by partly or entirely missing antibodies. A and B antigens and antibodies were examined by serological blood typing, and ABO deoxyribonucleic acid (DNA) analyses were performed by sequence-specific priming and sequencing. A B101 allele was demonstrable in a case with O phenotype. The molecular mechanisms in deficiency of natural ABO antibody could be partly clarified. The ABO genotyping technique is an accurate method for determining the blood samples involved in ABO grouping discrepancies and is a valuable complement to serology for correct determination of donor blood status. The mechanisms involved in the absence of potent natural antibodies directed against A and B antigen lacking on an individual's own red cell membranes remain to be further investigated.
Deng
Zhi-Hui
ZH
ShenZhen Institute of Transfusion Medicine, ShenZhen, GuangDong, China. zhihui-deng@yahoo.com.cn
Zeng
Jian-Qiang
JQ
Yu
Qiong
Q
Su
Yu-Qing
YQ
Liang
Yan-Lian
YL
Lu
Liang
L
Zhu
Wei-Gang
WG
Yang
Bao-Cheng
BC
D000017:ABO Blood-Group System / Q000235:genetics*; D000293:Adolescent; D000328:Adult; D000906:Antibodies; D005260:Female; D005838:Genotype; D006801:Humans; D008297:Male; D010641:Phenotype
D000017:ABO Blood-Group System; D000906:Antibodies