Antibodies against cyclic citrullinated peptide are associated with HLA-DR4 in simplex and multiplex polyarticular-onset juvenile rheumatoid arthritis.
Ferucci ED, Majka DS, Parrish LA, Moroldo MB, Ryan M, Passo M, Thompson SD, Deane KD, Rewers M, Arend WP, Glass DN, Norris JM, Holers VM. Antibodies against cyclic citrullinated peptide are associated with HLA-DR4 in simplex and multiplex polyarticular-onset juvenile rheumatoid arthritis. Arthritis Rheum. 2005 Jan; 52(1):239-46.