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  • Title: PHD2 mutation and congenital erythrocytosis with paraganglioma.
    Author: Ladroue C, Carcenac R, Leporrier M, Gad S, Le Hello C, Galateau-Salle F, Feunteun J, Pouysségur J, Richard S, Gardie B.
    Journal: N Engl J Med; 2008 Dec 18; 359(25):2685-92. PubMed ID: 19092153.
    Abstract:
    Prolyl hydroxylase domain (PHD) proteins play a major role in regulating the hypoxia-inducible factor (HIF) that induces expression of genes involved in angiogenesis, erythropoiesis, and cell metabolism, proliferation, and survival. Germ-line mutations in the prolyl hydroxylase domain 2 gene (PHD2) have been reported in patients with familial erythrocytosis but not in association with tumors. We describe a patient with erythrocytosis and recurrent paraganglioma who carries a newly discovered PHD2 mutation. This mutation affects PHD2 function and stabilizes HIF-alpha proteins. In addition, we demonstrate loss of heterozygosity of PHD2 in the tumor, suggesting that PHD2 could be a tumor-suppressor gene.
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