Fig. 1From: Knowledge-based analysis of genetic associations of rheumatoid arthritis to inform studies searching for pleiotropic genes: a literature review and network analysisA pleiotropic interaction network of RA. a The pleiotropic SNP-SNP interaction network; b the derived gene-gene interaction network. In b, 13 red nodes are RA-susceptible genes, and 14 yellow nodes are susceptible genes for one or more of eight other diseases. SNP single nucleotide polymorphism, RA rheumatoid arthritisBack to article page