YY1 and neoplasm: For example, elevated YY1 levels were detected in many tumor types including prostate cancer [20], [21], ovarian cancer [19], colon cancer [22], breast cancer [22], cervical cancer [23], osteosarcoma [24], acute myeloid leukemia [25], [26], Hodgkin's lymphoma [19], [27], non-Hodgkin's lymphoma [28], and follicular lymphoma [29].