Recent research shows that MELK expression is correlated with malignancy in a broad spectrum of cancers (Gray et al., 2005 ▶; Marie et al., 2008 ▶; Nakano et al., 2008 ▶; Pickard et al., 2009 ▶; Ku et al., 2010 ▶). This evidence concerns the gene MELK and cancer.