The first little network had the genes GAD1 and GAD2 from the cluster of T1D-AITD, the second had the sgenes TRIM21, TROVE2, and SSB from the cluster of SLE-SS, and the third had the genes CCL5 and CCL2 from the cluster RA-MS (Figure 3). This evidence concerns the gene CCL2 and rheumatoid arthritis.