HLA-DR6 (DR6) is a broad-antigen serotype that is further split into HLA-DR13 and HLA-DR14 antigen serotypes.
DR6 serological reactivity is relatively poor compared to other serological tests for DR antigens. Compare to DQ2 or DR7.
DR13 and DR14 share a common association to myastenia gravis
HLA-DRB1*13 and HLA-DRB1*14 encode serotypes of DR6