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

    Research output: Contribution to journalArticlepeer-review

    53 Citations (Scopus)

    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 2010

    All Science Journal Classification (ASJC) codes

    • Hematology

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