HLA-DRB1 and Allergy: Interestingly, all shrimp epitope binding alleles tested in that study that are polymorphic in Asians (DRB*01:01, DRB1*04:01, DRB1*09:01, DQB1*03:02 and DQB1*05:01) were not significantly associated with shrimp allergy in our data.