In Chinese, DRB1*14:04, 14:05, and14:54 were common among PV patients, as well asDQA1*01:01 and DQB1*05:03 (Sun et al., 2019;Zhang et al.,2019); however, haplotype analysis was not performed for thatpopulation. This evidence concerns the gene HLA-DRB1 and acquired polycythemia vera.