The research was aimed at predicting either diagnosis or prognosis, as follows: benign versus malignant tumor discrimination (n = 14); grading (n = 10); tumor histotype discrimination (n = 4); proliferation index Ki67 expression (n = 1); survival (n = 12); response to therapy, either chemotherapy or radiotherapy (n = 8); local and/or metastatic relapse (n = 9). The gene discussed is MKI67; the disease is cancer.