C1QTNF6 and rheumatoid arthritis: Overlapping risk variants within C1QTNF6 have been found among various autoimmune disorders, evidenced by rs229541 in rheumatoid arthritis (12), rs229527 (in tight linkage disequilibrium with rs229541) in generalized vitiligo (13) and rs229527 in Graves’ disease (14), indicating a common molecular pathway underlying these diseases.