Cited by 1,776Acute Myeloid Leukemia ResearchMyeloproliferative Neoplasms: Diagnosis and TreatmentCancer Genomics and Diagnostics

Mutation in TET2 in Myeloid Cancers

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Delhommeau, François, Dupont, Sabrina, Valle, Véronique Della, James, Chloé, Trannoy, Severine, Massé, Aline, Kosmider, Olivier, Le Couedic, Jean-Pierre +15 more·2009·New England Journal of Medicine

Abstract

BACKGROUND: The myelodysplastic syndromes and myeloproliferative disorders are associated with deregulated production of myeloid cells. The mechanisms underlying these disorders are not well defined. METHODS: We conducted a combination of molecular, cytogenetic, comparative-genomic-hybridization, and single-nucleotide-polymorphism analyses to identify a candidate tumor-suppressor gene common to patients with myelodysplastic syndromes, myeloproliferative disorders, and acute myeloid leukemia (AML). The coding sequence of this gene, TET2, was determined in 320 patients. We analyzed the consequences of deletions or mutations in TET2 with the use of in vitro clonal assays and transplantation of human tumor cells into mice. RESULTS: We initially identified deletions or mutations in TET2 in three patients with myelodysplastic syndromes, in three of five patients with myeloproliferative disorders, in two patients with primary AML, and in one patient with secondary AML. We selected the six patients with myelodysplastic syndromes or AML because they carried acquired rearrangements on chromosome 4q24; we selected the five patients with myeloproliferative disorders because they carried a dominant clone in hematopoietic progenitor cells that was positive for the V617F mutation in the Janus kinase 2 (JAK2) gene. TET2 defects were observed in 15 of 81 patients with myelodysplastic syndromes (19%), in 24 of 198 patients with myeloproliferative disorders (12%) (with or without the JAK2 V617F mutation), in 5 of 21 patients with secondary AML (24%), and in 2 of 9 patients with chronic myelomonocytic leukemia (22%). TET2 defects were present in hematopoietic stem cells and preceded the JAK2 V617F mutation in the five samples from patients with myeloproliferative disorders that we analyzed. CONCLUSIONS: Somatic mutations in TET2 occur in about 15% of patients with various myeloid cancers.

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  1. Campbell PJ, Green AR. The myelopro- 9. liferative disorders. N Engl J Med 2006; 355:2452-66.
  2. Greenberg P, Cox C, LeBeau MM, et 20. al. International scoring system for evalu- ating prognosis in myelodysplastic syn- dromes. Blood 1997;89:2079-88. [Erratum, Blood 1998;91:1100.

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Authors
Delhommeau, F., Dupont, S., Valle, V. D., James, C., Trannoy, S., Massé, A., Kosmider, O., Le Couedic, J.-P., Robert, F., Alberdi, A., Lécluse, Y., Plo, I., Dreyfus, F. J., Marzac, C., Casadevall, N., Lacombe, C., Romana, S. P., Dessen, P., Soulier, J., Viguié, F., Fontenay, M., Vainchenker, W., & Bernard, O. A.
Affiliations
  • Inserm (FR)
  • Centre National de la Recherche Scientifique (FR)
  • Hôpital Necker-Enfants Malades (FR)
  • Hôpital Cochin (FR)
Venue
New England Journal of Medicine
Published
2009-05-28
Volume
360
Issue
22
Pages
2289-2301
ISSN
  • 0028-4793 (ISSN-L)
  • 1533-4406
OpenAlex
W2097743943
Cited by
1,776
References
35
Citations by year
2026: 32 · 2025: 50 · 2024: 65 · 2023: 52 · 2022: 81 · 2021: 93 · 2020: 90 · 2019: 74 · 2018: 85 · 2017: 128 · 2016: 121 · 2015: 117 · 2014: 152 · 2013: 150 · 2012: 153
FWCI
107.74
Type
journal article
Language
en
Open access
Locations
  • New England Journal of Medicine (publishedVersion)
  • PubMed (publishedVersion)
Topics
  • Health Sciences › Medicine › Hematology › Acute Myeloid Leukemia Research
  • Health Sciences › Medicine › Genetics › Myeloproliferative Neoplasms: Diagnosis and Treatment
  • Life Sciences › Biochemistry, Genetics and Molecular Biology › Cancer Research › Cancer Genomics and Diagnostics
Keywords
TET2, somatic mutations, myelodysplastic syndrome, myeloproliferative neoplasms, acute myeloid leukemia, chronic myelomonocytic leukemia, tumor suppressor, JAK2 V617F mutation, hematopoietic stem cells, clonal hematopoiesis
MeSH terms
Amino Acid Sequence, Animals, Chromosomes, Human, Pair 4, DNA-Binding Proteins, Hematopoietic Stem Cells, Humans, Molecular Sequence Data, Mutation, Myelodysplastic Syndromes, Myeloproliferative Disorders, Proto-Oncogene Proteins, Gene Rearrangement, Leukemia, Myeloid, Acute, Mice, SCID, Mice, Inbred NOD, Sequence Deletion, Antigens, CD34, Polymorphism, Single Nucleotide, Dioxygenases, Mice, Janus Kinase 2, Comparative Genomic Hybridization

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