When MMRPs were evaluated in unicystic ameloblastomas, they showed higher expression (hMLH1: 62.5 ± 43.4; hMSH2: 83.3 ± 47.8) than did solid ameloblastomas (hMLH1: 59.4 ± 13.5; hMSH2: 75.8 ± 40.2). The gene discussed is MSH2; the disease is ameloblastoma.