Our findings are in line with the Hong Kong GWAS that the associations of HLA-B*38:02, HLA-DRB1*08:03, rs2596487 and rs1811197 with ATD-induced agranulocytosis become even stronger in patients with agranulocytosis caused only by MMI. This evidence concerns the gene HLA-DRB1 and Absence of circulating granulocytes.