sentences:  DR16 is part of the older HLA-DR2 serotype group which also contains the similar HLA-DR15 antigens.DR16 is associated with Chaga's cardiomyopathy, rheumatic heart disease, coronary artery ectasia, and chronic discoid lupus erythematosus.DRB1*1601 is associated with tuberculosis risk
  
  DRB1*1602