CCNE1 and ovarian cancer: Although we were unable to detect clear correlation between CCNE1 and tumorigenic potential of ovarian cancer cells (Figure 1), the observation of elevated CCNE1 expression in over 40% ovary tumor specimens (Table 1 and Figure 2) raised the possibility that the presence of CCNE1 may be only involved in the tumorigenecity of ovarian cancer cells with elevated CCNE1 expression.