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A tale of two siblings: Two cases of AML arising from a single pre-leukemic DNMT3A mutant clone

  • C. N. Hahn
  • , D. M. Ross
  • , J. Feng
  • , A. Beligaswatte
  • , D. K. Hiwase
  • , W. T. Parker
  • , M. Ho
  • , M. Zawitkowski
  • , K. L. Ambler
  • , G. D. Cheetham
  • , Y. K. Lee
  • , M. Babic
  • , C. M. Butcher
  • , G. A. Engler
  • , A. L. Brown
  • , R. J. D'Andrea
  • , I. D. Lewis
  • , A. W. Schreiber
  • , L. B. To
  • , H. S. Scott

Research output: Contribution to journalLetterpeer-review

30 Citations (Scopus)
77 Downloads (Pure)

Abstract

Acute myeloid leukemia (AML) patients with DNA methyltransferase 3A (DNMT3A) mutations in remission after induction chemotherapy may have hematopoiesis arising from a putative pre-leukemic clone lacking the full spectrum of mutations seen at AML diagnosis. DNMT3A mutations in hematopoietic stem cells lead to increased self-renewal capacity and dominance of the stem-cell compartment. The common DNMT3AR882H mutation is usually heterozygous and results in loss-of-function with a dominant-negative effect. DNMT3A mutations are thought to occur early in AML ontogeny, and are found in around 20% of de novo AML and in a higher proportion of secondary AML cases. In population studies clonal mutations of DNMT3A6 and other epigenetic regulators are more common with increasing age, and may contribute to a proportion of cases of age-related skewing of X-chromosome inactivation.
Original languageEnglish
Pages (from-to)2101-2104
Number of pages4
JournalLeukemia
Volume29
Issue number10
DOIs
Publication statusPublished - 1 Oct 2015

Bibliographical note

This work is licensed under a Creative Commons Attribution-NonCommercial-NoDerivs 4.0 International License. The images or other third party material in this article are included in the article’s Creative Commons license, unless indicated otherwise in the credit line; if the material is not included under the Creative Commons license, users will need to obtain permission from the license holder to reproduce the material.

Keywords

  • Acute myeloid leukemia
  • remission
  • chemotherapy
  • stem-cell

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