CDKN1B and ovarian epithelial tumor: In one study, Skp2 expression correlated with reduced p27 in epithelial ovarian tumors, and although Skp2 alone was associated with poor prognosis, evaluation of the combined phenotype, Skp2(+) Jab1/CSN5(+) p27(-), led to identification of patients with the worst prognosis [94].