<prompt> HLA associated with rheumatoid arthritis is -HLA B27HLA DR 4HLA B19HLA DR2  <response>: Ans. is b i.e. HLA DR4 HLAs in Rheumatoid arthritisAssociated with the dev elopement of Rheumatoid arthritis HLA-DR4 HLA-DR 10 HLA-DR9 HLA-DR 3 ArabsProtects against the development of Rheumatoid arthritis HLA-DR5 HLA-DR2 HLA-DR3 HLA-DR7 