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. 2021 Jan 29;184(4):607–615. doi: 10.1530/EJE-20-1268

Table 2.

Classification of HLA genotypes and applied risk class.

Risk class (this study) Allele 1 (HLA-DRB1-DQA1-DQB1) Allele 2 (HLA-DRB1-DQA1-DQB1) RISK category
1 *0301-*0501-*0201 *0404-*0301-*0302 Very high
1 *0404-*0301-*0302 *0404-*0301-*0302 High
1 *0301-*0501-*0201 *0301-*0501-*0201 High
2 *0301-*0501-*0201 Any other DRB1 allele Intermediate
3 *0404-*0301-*0302 Any other DRB1 allele Low
3 Intermediate* Intermediate * Low
3 Intermediate* Low* Very low
3 Low* Low* Very low

* Intermediate: The combination of any of the following HLA-DRB1-DQA1-DQB1 haplotypes: *1401-*0101-*0503, *15-*0102-*0602/*0611, *07-*0201-*0303, *0401-*0301-*0301, *0801-*0401-*04, *11-*0501 -*0301and/or *12-*0501-*0301.

*Low risk: Combination of the HLA-types in the ‘Intermediate risk’ category or the combination of any of the following HLA-DRB1-DQA1-DQB1 haplotypes:*01/*10-*0101-*0501, *1301-*0103-*0603, *1302-*0201-*0604, and/or *07-*0201-*0201.