CCL3L3 and type 1 diabetes mellitus: There is increasing evidence that CCL3L1 copy-number influences the susceptibility to rheumatoid arthritis (RA),[6] type 1 diabetes (T1D),[6] and systemic lupus erythematosus (SLE).[7] Because the correlations between CNV of this gene (CCL3L1) and other autoimmune diseases have been reported,[6,7] we attempted to grope for the gene copy number of CCL3L1 in GD.