Quantitative polymerase chain reaction (qPCR) analysis of model genes in Mesenchymal Stem Cells (MSCs) and three different osteosarcoma cell lines (HOS, MG63, and U2OS) showed no significant differences in the expression levels of MLH1 and MTM1 genes between MSCs and the osteosarcoma cell lines. Here, MTM1 is linked to osteosarcoma.