Spectrum of molecular defects in juvenile myelomonocytic leukaemia includes ASXL1 mutations: Short report

Yuka Sugimoto, Hideki Muramatsu, Hideki Makishima, Courtney Prince, Anna M. Jankowska, Nao Yoshida, Yinyan Xu, Nobuhiro Nishio, Asahito Hama, Hiroshi Yagasaki, Yoshiyuki Takahashi, Koji Kato, Atsushi Manabe, Seiji Kojima, Jaroslaw P. MacIejewski

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Abstract

Summary Mutations in NF1, PTPN11, NRAS, KRAS and CBL have been reported to play a pathogenetic role in juvenile myelomonocytic leukaemia (JMML), a rare myelodyplastic/myeloproliferative neoplasm occurring in children. Recently, mutations in ASXL1 were identified in chronic myelomonocytic leukaemia and other myeloid malignancies. We sequenced exon 12 of ASLX1 in 49 JMML patients, and found 2 novel heterozygous (nonsense and frameshift) mutations, one occurring as a sole lesion, the other was in conjunction with a PTPN11 mutation. ASXL1 cooperates with KDM1A in transcriptional repression and thereby ASXL1 mutations may synergize with or mimic other JMML-related mutations.

Original languageEnglish
Pages (from-to)83-87
Number of pages5
JournalBritish Journal of Haematology
Volume150
Issue number1
DOIs
Publication statusPublished - Jul 1 2010
Externally publishedYes

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All Science Journal Classification (ASJC) codes

  • Hematology

Cite this

Sugimoto, Y., Muramatsu, H., Makishima, H., Prince, C., Jankowska, A. M., Yoshida, N., ... MacIejewski, J. P. (2010). Spectrum of molecular defects in juvenile myelomonocytic leukaemia includes ASXL1 mutations: Short report. British Journal of Haematology, 150(1), 83-87. https://doi.org/10.1111/j.1365-2141.2010.08196.x