CTSG and osteomyelitis: We found no differences in MMP-13 or sRANKL serum levels between osteomyelitis patients who were carriers of the different alleles of CTSG 125 (124.3 [8.6–240.0] and 89 [55.05–304.0] pg/ml, p = 0.9 for MMP-13, and 0.165 [0.04–0.250] and 0.08 [0.04–0.210] pmol/L, p = 0.7 for sRANKL for osteomyelitis patients carriers of the AA and AG + GG genotypes of the CTSG).