MSH2 and neoplasm: Furthermore, KIF11 was positively associated with the expression of mismatch repair (MMR) genes—MSH6, MSH2, MLH1, and PMS2, as well as the MKI67 gene (coding for proliferation marker Ki-67), which is in agreement with the observations that development of GIN is paralleled by the upregulation of MMR genes and overlaps with the proliferative activity of tumor cells [54,55,56].