IL6ST and type 2 diabetes mellitus: Interestingly, serum levels of IL-6 (r=0.21, p<0.05), sIL-6R (r=0.31, p<0.01) and sgp130 (p=0.35, r<0.01, Table 4) were positively correlated with age, a correlation that we had previously not observed for these proteins in type 2 diabetes patients (27).