<prompt> HLA DR3 is associated with?Dermatitis herpetiformisPemphigus vulgarisBehcet diseasePsoriasis vulgaris  <response>: Ans. is a i.e., Dermatitis herpetiformis Both dermatitis herpetiformis and celiac disease gluten sensitive enteropathy are associated with increased expression of HLA-A1, HLA-B8, HLA-DR3 and HLA-DQ2. DR3 associated diseases are Myasthenia gravis, Graves disease, Type I DM, Dermatitis herpetiformis, Chronic active hepatitis, Caucasian SLE, Sjogrens syndrome.About other options Pemphigus vulgaris - DQ1 Behcet disease - B51 Psoriasis vulgaris - CW6 