The normal p53 stain pattern (variable stain in 10–75% nuclei) was found in nearly all clear cell OvCa and borderline serous tumours, and also in 31–67% of borderline mucinous tumours, and serous, mucinous and endometrioid carcinomas and carcinosarcoma subtypes (Table 2A). This evidence concerns the gene TP53 and endometrioid adenocarcinoma.