Yolk sac tumor of the ovary is a rare but highly malignant and aggressive germ cell tumor. The objective of this case study of an ovarian yolk sac tumor was to identify putative pathways that are known to pose a block in differentiation, both in early embryogenesis and in tumorigenesis, that might be amenable to low toxicity therapies designed to promote differentiation to a more benign state and prevent recurrent disease in such tumors. The enhancer of Zeste homolog 2 (EZH2), a histone methyl transferase, and silent mating type information regulation 2 homolog 1 (SIRT1), a NAD+ histone deacetylase, are two such pathways.
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