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Associations of amino acid residues in the DRβ chain with CKD in RA patients. The significance of the associations was established by Fisher’s exact test, using 2 × 2 contingency tables. Corrected p (pc) values were generated by multiplying p-values by the number of analyzed amino acid residues. Predisposing associations are indicated by filled circles. RA: rheumatoid arthritis; CKD: chronic kidney disease.
