Expression of WWOX is either altered or lost from epigenetic modification in multiple malignant cancers, such as non-small cell lung carcinoma (Donati et al., 2007), hematopoietic malignancies (Ishii and Furukawa, 2004), gastric carcinoma (Aqeilan et al., 2004), pancreatic carcinoma (Kuroki et al., 2004), breast carcinoma (Guler et al., 2004; Aqeilan et al., 2007), and glioblastoma multiforme (Kosla et al., 2011).