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The landscape of somatic mutations in infant MLL-rearranged acute lymphoblastic leukemias.

Andersson, Anna (author)
Lund University,Lunds universitet,Avdelningen för klinisk genetik,Institutionen för laboratoriemedicin,Medicinska fakulteten,MLL-rearrangerad leukemi hos spädbarn,Forskargrupper vid Lunds universitet,Division of Clinical Genetics,Department of Laboratory Medicine,Faculty of Medicine,The pathogenetic mechanisms behind MLL-rearranged acute leukemia in infancy,Lund University Research Groups
Ma, Jing (author)
Wang, Jianmin (author)
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Chen, Xiang (author)
Gedman, Amanda Larson (author)
Dang, Jinjun (author)
Nakitandwe, Joy (author)
Holmfeldt, Linda (author)
Parker, Matthew (author)
Easton, John (author)
Huether, Robert (author)
Kriwacki, Richard (author)
Rusch, Michael (author)
Wu, Gang (author)
Li, Yongjin (author)
Mulder, Heather (author)
Raimondi, Susana (author)
Pounds, Stanley (author)
Kang, Guolian (author)
Shi, Lei (author)
Becksfort, Jared (author)
Gupta, Pankaj (author)
Payne-Turner, Debbie (author)
Vadodaria, Bhavin (author)
Boggs, Kristy (author)
Yergeau, Donald (author)
Manne, Jayanthi (author)
Song, Guangchun (author)
Edmonson, Michael (author)
Nagahawatte, Panduka (author)
Wei, Lei (author)
Cheng, Cheng (author)
Pei, Deqing (author)
Sutton, Rosemary (author)
Venn, Nicola C (author)
Chetcuti, Albert (author)
Rush, Amanda (author)
Catchpoole, Daniel (author)
Heldrup, Jesper (author)
Lund University,Lunds universitet,Pediatrik, Lund,Sektion V,Institutionen för kliniska vetenskaper, Lund,Medicinska fakulteten,Paediatrics (Lund),Section V,Department of Clinical Sciences, Lund,Faculty of Medicine,Skåne University Hospital
Fioretos, Thoas (author)
Lund University,Lunds universitet,Avdelningen för klinisk genetik,Institutionen för laboratoriemedicin,Medicinska fakulteten,Division of Clinical Genetics,Department of Laboratory Medicine,Faculty of Medicine
Lu, Charles (author)
Ding, Li (author)
Pui, Ching-Hon (author)
Shurtleff, Sheila (author)
Mullighan, Charles G (author)
Mardis, Elaine R (author)
Wilson, Richard K (author)
Gruber, Tanja A (author)
Zhang, Jinghui (author)
Downing, James R (author)
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 (creator_code:org_t)
2015-03-02
2015
English.
In: Nature Genetics. - : Springer Science and Business Media LLC. - 1546-1718 .- 1061-4036. ; 47:4, s. 192-330
  • Journal article (peer-reviewed)
Abstract Subject headings
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  • Infant acute lymphoblastic leukemia (ALL) with MLL rearrangements (MLL-R) represents a distinct leukemia with a poor prognosis. To define its mutational landscape, we performed whole-genome, exome, RNA and targeted DNA sequencing on 65 infants (47 MLL-R and 18 non-MLL-R cases) and 20 older children (MLL-R cases) with leukemia. Our data show that infant MLL-R ALL has one of the lowest frequencies of somatic mutations of any sequenced cancer, with the predominant leukemic clone carrying a mean of 1.3 non-silent mutations. Despite this paucity of mutations, we detected activating mutations in kinase-PI3K-RAS signaling pathway components in 47% of cases. Surprisingly, these mutations were often subclonal and were frequently lost at relapse. In contrast to infant cases, MLL-R leukemia in older children had more somatic mutations (mean of 6.5 mutations/case versus 1.3 mutations/case, P = 7.15 × 10(-5)) and had frequent mutations (45%) in epigenetic regulators, a category of genes that, with the exception of MLL, was rarely mutated in infant MLL-R ALL.

Subject headings

MEDICIN OCH HÄLSOVETENSKAP  -- Medicinska och farmaceutiska grundvetenskaper -- Medicinsk genetik (hsv//swe)
MEDICAL AND HEALTH SCIENCES  -- Basic Medicine -- Medical Genetics (hsv//eng)

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