Figure 1 shows p53 expression pattern in LNG and HNG CCCs. Proliferative index marker (Ki67) showed brisk positivity (greater than 15% of cells stained in each specimen) in both low and high nuclear grade tumors irrespective of their association with endometriosis (Figure 1). Figures 2 and 3 show p53 and Ki67 expression in ovarian and endometrial LNG CCCs. Tables 3, 4, 5, and 6 include the basic clinical parameters (age and stage) of patients with CCC with and without endometriosis. The gene discussed is TP53; the disease is endometriosis.