Cited by 397Adrenal and Paraganglionic TumorsCancer, Hypoxia, and MetabolismEar and Head Tumors

Somatic HIF2A Gain-of-Function Mutations in Paraganglioma with Polycythemia

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Zhuang, Zhengping, Yang, Chunzhang, Lorenzo, Felipe, Merino, Maria, Fojo, Tito, Kebebew, Electron, Popovic, Vera, Stratakis, Constantine A. +2 more·2012·New England Journal of Medicine

Abstract

Sum m a r yHypoxia-inducible factors are transcription factors controlling energy, iron metabolism, erythropoiesis, and development.When these proteins are dysregulated, they contribute to tumorigenesis and cancer progression.However, mutations in genes encoding α subunits of hypoxia-inducible factors (HIF-α) have not previously been identified in any cancer.Here we report two novel somatic gain-of-function mutations in the gene encoding hypoxia-inducible factor 2α (HIF2A) in two patients, one presenting with paraganglioma and the other with paraganglioma and somatostatinoma, both of whom had polycythemia.The two mutations were associated with increased HIF-2α activity and increased protein half-life.H ypoxia-inducible factors, originally described by Wang et al., 1 are transcription factors that respond to changes in tissue oxygen concentration.These highly conserved proteins are composed of α and β subunits.The HIF-β subunit is constitutively expressed, whereas the α subunits are inducible by hypoxia and are associated with aggressive, treatment-refractory tumors.2,3 Under normoxic conditions, HIF-1α, HIF-2α, and HIF-3α are hydroxylated on specific prolyl residues, allowing for recognition by the von Hippel-Lindau (VHL) tumorsuppressor protein, ubiquitination, and rapid degradation through the proteasome.4 Under hypoxic conditions, prolyl hydroxylation of HIF-α proteins is reduced, resulting in their stabilization and, in turn, transcription of genes involved in the hypoxia response, including angiogenesis, glycolysis, apoptosis, proliferation, and growth.5,6 Paragangliomas and pheochromocytomas are catecholamine-producing tumors derived from the chromaffin cells of extraadrenal paraganglia and the adrenal medulla.7 The pioneering work of Neumann et al. 8 showed that about one fourth of these tumors were hereditary, a fraction that was subsequently estimated to be closer to one third, on the basis of the identification of mutations in several additional genes, including SDHA, SDHAF2, TMEM127, and MAX. 9 The identification of these genetic drivers led to the demonstration of HIF-α stabilization and dysregulation in paragangliomas and pheochromocytomas harboring mutations in VHL and succinate dehydrogenase (SDH).10,11 Somatostatinomas are somatostatin-producing neuroendocrine tumors believed to originate from neural-crest cells.They are occasionally diagnosed in patients with the VHL syndrome, multiple endocrine neoplasia type 1 or 2, or neurofibromatosis type 1. 12

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  • Somatic gain-of-function mutations in HIF2A have been discovered in pheochromocytomas and paragangliomas.

    “Somatic gain-of-function mutations in HIF2A have been discovered in pheochromocytomas and paragangliomas (Zhuang et al., 2012;Comino-Mendez et al., 2013;Lorenzo et al., 2013;Taieb et al., 2013;Toledo et al., 2013;Yang et al., 2013), while high HIF-2α expression is associated with poor survival in patients with neuroblastoma (Holmquist-Mengelbier et al., 2006).”

    From Therapeutic targeting of hypoxia and hypoxia-inducible factors in cancer (2016) · cites this paper as Zhuang et al., 2012

    The Results (Mutation analysis of HIF2α) identify somatic HIF2α mutations in paragangliomas from both patients, and the Discussion describes them as gain-of-function mutations. The paper does not report finding these mutations in a pheochromocytoma, so it supports only the paraganglioma portion of the attributed claim. (LLM, conf=0.88)

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  1. [13]Prchal JT Kaushansky K Lichtman MA Kipps TJ Beutler E Seligsohn U Prchal JT Secondary polycythemia (Erythocytosis) Williams Hematology 2010 823 39 McGraw Hill New York 8th ed

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Authors
Zhuang, Z., Yang, C., Lorenzo, F., Merino, M., Fojo, T., Kebebew, E., Popovic, V., Stratakis, C. A., Prchal, J. T., & Pacak, K.
Affiliations
  • National Institutes of Health (US)
  • National Institute of Neurological Disorders and Stroke (US)
  • Veterans Health Administration (US)
  • National Cancer Institute (MY)
  • National Cancer Institute (UA)
  • University of Belgrade (RS)
  • Eunice Kennedy Shriver National Institute of Child Health and Human Development (US)
  • University of Utah (US)
Venue
New England Journal of Medicine
Published
2012-09-06
Volume
367
Issue
10
Pages
922-930
ISSN
  • 0028-4793 (ISSN-L)
  • 1533-4406
OpenAlex
W2142033642
Cited by
397
References
26
Citations by year
2026: 22 · 2025: 12 · 2024: 22 · 2023: 18 · 2022: 20 · 2021: 29 · 2020: 24 · 2019: 24 · 2018: 32 · 2017: 43 · 2016: 27 · 2015: 31 · 2014: 47 · 2013: 42 · 2012: 2
FWCI
39.84
Type
journal article
Language
en
Open access
Locations
  • New England Journal of Medicine (publishedVersion)
  • PubMed (publishedVersion)
  • Europe PMC (PubMed Central) (acceptedVersion)
  • PubMed Central (acceptedVersion)
Funders
  • National Institutes of Health
  • National Cancer Institute (P01CA108671)
  • Eunice Kennedy Shriver National Institute of Child Health and Human Development (ZIAHD008735)
Topics
  • Health Sciences › Medicine › Surgery › Adrenal and Paraganglionic Tumors
  • Life Sciences › Biochemistry, Genetics and Molecular Biology › Cancer Research › Cancer, Hypoxia, and Metabolism
  • Health Sciences › Medicine › Oncology › Ear and Head Tumors
Keywords
HIF-2α, paraganglioma, polycythemia, somatostatinoma, gain-of-function mutations, protein half-life, prolyl hydroxylation, VHL, succinate dehydrogenase, pheochromocytoma
MeSH terms
Abdominal Neoplasms, Endothelial PAS Domain-Containing Protein 1, Adolescent, Adrenal Gland Neoplasms, Adult, DNA Mutational Analysis, Female, Humans, Hydroxylation, Mutation, Pancreatic Neoplasms, Paraganglioma, Polycythemia, Somatostatinoma, Transcription, Genetic, Up-Regulation, Basic Helix-Loop-Helix Transcription Factors, Basic Helix-Loop-Helix Proteins

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