Chatzikyriakidou et al. [34] reported a strong linkage disequilibrium between RFC1 80 G > A and RFC1−43 T > C genotypes for only three patterns in the combination of the RFC1 80 G > A with RFC1−43 T > C genotype, that is, 80G/G and−43 T/T, 80G/A and−43 T/C, and 80A/A and−43C/C in Greek patients with RA. This evidence concerns the gene RFC1 and rheumatoid arthritis.