TLR2 and breast cancer: Furthermore, previous reports also described a role of TLR2 in the maintenance of stemness in ovarian and breast cancer cells Lately, a recent study demonstrated that, in pancreatic cancer cells, the interaction HMGB1 with TLR2 leads to the activation of Wnt/β-catenin in CD133+ cancer cells and it is responsible for the activation of stem cell genes, such as NANOG, OCT4 and SOX2 [35].