HPA1-29w Genotyping and the Foundation for the Platelet Apheresis Registry in Jiangsu Province of China by MassARRAY Spectrometry

Author:

Dai Xin,Liu Chengcheng,Chen Rong,Jiang Ting,Zhang Ruoyang,Feng Chenchen,Liu Taixiang,LÜ Hong,Liang Wenbiao

Abstract

<b><i>Introduction:</i></b> This study aimed to investigate the allele frequencies of the human platelet antigens (HPA) <i>HPA</i>-1-29w system in Jiangsu (China) and establish the platelet apheresis registry in blood donors. <b><i>Methods:</i></b> HPA genotyping was performed using the MassARRAY iPLEX<sup>®</sup> platform. Allele and genotype frequencies were estimated by direct counting and tested for Hardy-Weinberg equilibrium. The transfusion mismatch probability was calculated for every HPA specificity. <b><i>Results:</i></b> The HPA allele frequencies in the Jiangsu Han population of HPA-1b, -2b, -3b, -4b, -5b, -6b, -11b, -15b, and -21b were 0.0055, 0.0530, 0.4116, 0.0015, 0.0155, 0.0162, 0.0003, 0.4683, and 0.0070, respectively, in which a heterozygote of HPA-11a/b was first detected in China. Only allele a was detected for HPA-7-10w,-12-14w,-16-20w, and -22-29w quasi-systems. The highest mismatch rate of HPA genes in 1,640 platelet donors was the HPA-15 system, followed by the HPA-3 system with a rate of 37.4% and 36.71%, respectively. <b><i>Conclusion:</i></b> China’s largest-scale platelet registry of HPA-1-29w has been explored. The MassARRAY platform may help found the platelet apheresis registry which would be useful to provide matching platelets and lead to a more accurate, effective, and safe transfusion for patients with platelet therapy.

Publisher

S. Karger AG

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