In this study, we found that the majority of somatic mutations found during exome sequencing of primary tumor tissue were also observed in metastatic tumor tissue and metastatic cells in ascites samples, although Sanger sequencing revealed genetic alterations involving several genes, such as APBA2, ZNF1142, and RBFOX1, only in the metastatic samples. This evidence concerns the gene RBFOX1 and metastatic neoplasm.