TY - JOUR
T1 - RAS-pathway mutation patterns define epigenetic subclasses in juvenile myelomonocytic leukemia
AU - Lipka, Daniel B.
AU - Witte, Tania
AU - Toth, Reka
AU - Yang, Jing
AU - Wiesenfarth, Manuel
AU - Nöllke, Peter
AU - Fischer, Alexandra
AU - Brocks, David
AU - Gu, Zuguang
AU - Park, Jeongbin
AU - Strahm, Brigitte
AU - Wlodarski, Marcin
AU - Yoshimi, Ayami
AU - Claus, Rainer
AU - Lübbert, Michael
AU - Busch, Hauke
AU - Boerries, Melanie
AU - Hartmann, Mark
AU - Schönung, Maximilian
AU - Kilik, Umut
AU - Langstein, Jens
AU - Wierzbinska, Justyna A.
AU - Pabst, Caroline
AU - Garg, Swati
AU - Catalá, Albert
AU - De Moerloose, Barbara
AU - Dworzak, Michael
AU - Hasle, Henrik
AU - Locatelli, Franco
AU - Masetti, Riccardo
AU - Schmugge, Markus
AU - Smith, Owen
AU - Stary, Jan
AU - Ussowicz, Marek
AU - Van Den Heuvel-Eibrink, Marry M.
AU - Assenov, Yassen
AU - Schlesner, Matthias
AU - Niemeyer, Charlotte
AU - Flotho, Christian
AU - Plass, Christoph
N1 - Funding Information:
We thank all members of the Division of Epigenomics and Cancer Risk Factors (DKFZ) for thoughtful discussions related to this study and we thank Monika Helf and Oliver Mücke for excellent technical support. We also thank the Microarray unit and the High Throughput Sequencing unit of the Genomics and Proteomics Core Facility, German Cancer Research Center (DKFZ), for providing the Illumina HumanMethylation450 arrays, the Illumina HumanHT-12 v4 Expression BeadChip arrays and related services, as well as for excellent support with exome sequencing services. This work was supported by project funding from the German José Carreras Leukemia Foundation (DJCLS) to C. P., D.B.L., and C.F. (project: DJCLS R 15/01), and from the German Research Foundation (DFG) to C.F. (projects: CRC992-C05 and FL345/4-2), and to H.B. (EXC 306) and M.B. (CRC 850). M.B. is funded by the German Federal Ministry of Education and Research within the framework of the e:Med research and funding concept, DeCaRe (FKZ 01ZX1409B). U.K. was supported by a joint German Academic Exchange Service (DAAD) and Turkish Education Foundation (TEV) master scholarship. This work was further supported by the German Cancer Consortium (DKTK).
Publisher Copyright:
© 2017 The Author(s).
PY - 2017/12/1
Y1 - 2017/12/1
N2 - Juvenile myelomonocytic leukemia (JMML) is an aggressive myeloproliferative disorder of early childhood characterized by mutations activating RAS signaling. Established clinical and genetic markers fail to fully recapitulate the clinical and biological heterogeneity of this disease. Here we report DNA methylome analysis and mutation profiling of 167 JMML samples. We identify three JMML subgroups with unique molecular and clinical characteristics. The high methylation group (HM) is characterized by somatic PTPN11 mutations and poor clinical outcome. The low methylation group is enriched for somatic NRAS and CBL mutations, as well as for Noonan patients, and has a good prognosis. The intermediate methylation group (IM) shows enrichment for monosomy 7 and somatic KRAS mutations. Hypermethylation is associated with repressed chromatin, genes regulated by RAS signaling, frequent co-occurrence of RAS pathway mutations and upregulation of DNMT1 and DNMT3B, suggesting a link between activation of the DNA methylation machinery and mutational patterns in JMML.
AB - Juvenile myelomonocytic leukemia (JMML) is an aggressive myeloproliferative disorder of early childhood characterized by mutations activating RAS signaling. Established clinical and genetic markers fail to fully recapitulate the clinical and biological heterogeneity of this disease. Here we report DNA methylome analysis and mutation profiling of 167 JMML samples. We identify three JMML subgroups with unique molecular and clinical characteristics. The high methylation group (HM) is characterized by somatic PTPN11 mutations and poor clinical outcome. The low methylation group is enriched for somatic NRAS and CBL mutations, as well as for Noonan patients, and has a good prognosis. The intermediate methylation group (IM) shows enrichment for monosomy 7 and somatic KRAS mutations. Hypermethylation is associated with repressed chromatin, genes regulated by RAS signaling, frequent co-occurrence of RAS pathway mutations and upregulation of DNMT1 and DNMT3B, suggesting a link between activation of the DNA methylation machinery and mutational patterns in JMML.
UR - http://www.scopus.com/inward/record.url?scp=85038610246&partnerID=8YFLogxK
U2 - 10.1038/s41467-017-02177-w
DO - 10.1038/s41467-017-02177-w
M3 - Article
C2 - 29259247
AN - SCOPUS:85038610246
SN - 2041-1723
VL - 8
JO - Nature Communications
JF - Nature Communications
IS - 1
M1 - 2126
ER -