HLA-DRB1 and COVID-19: In addition, two haplotypes previously related to vaccination were identified HLA-DRB1*01:01-DQA1*01:01-DQB1*05:01 and HLA-DRB1*15:01-DQA1*01:02-DQB1*06:02 linked to low and high COVID-19 vaccination response respectively (Supplementary Table 6).