Abstract
The genetic basis of hypodiploid acute lymphoblastic leukemia (ALL), a subtype of ALL characterized by aneuploidy and poor outcome, is unknown. Genomic profiling of 124 hypodiploid ALL cases, including whole-genome and exome sequencing of 40 cases, identified two subtypes that differ in the severity of aneuploidy, transcriptional profiles and submicroscopic genetic alterations. Near-haploid ALL with 24-31 chromosomes harbor alterations targeting receptor tyrosine kinase signaling and Ras signaling (71%) and the lymphoid transcription factor gene IKZF3 (encoding AIOLOS; 13%). In contrast, low-hypodiploid ALL with 32-39 chromosomes are characterized by alterations in TP53 (91.2%) that are commonly present in nontumor cells, IKZF2 (encoding HELIOS; 53%) and RB1 (41%). Both near-haploid and low-hypodiploid leukemic cells show activation of Ras-signaling and phosphoinositide 3-kinase (PI3K)-signaling pathways and are sensitive to PI3K inhibitors, indicating that these drugs should be explored as a new therapeutic strategy for this aggressive form of leukemia.
Original language | English |
---|---|
Pages (from-to) | 242-252 |
Number of pages | 11 |
Journal | Nature Genetics |
Volume | 45 |
Issue number | 3 |
DOIs | |
Publication status | Published or Issued - Mar 2013 |
ASJC Scopus subject areas
- Genetics
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In: Nature Genetics, Vol. 45, No. 3, 03.2013, p. 242-252.
Research output: Contribution to journal › Article › peer-review
TY - JOUR
T1 - The genomic landscape of hypodiploid acute lymphoblastic leukemia
AU - Holmfeldt, Linda
AU - Wei, Lei
AU - Diaz-Flores, Ernesto
AU - Walsh, Michael
AU - Zhang, Jinghui
AU - Ding, Li
AU - Payne-Turner, Debbie
AU - Churchman, Michelle
AU - Andersson, Anna
AU - Chen, Shann Ching
AU - Mccastlain, Kelly
AU - Becksfort, Jared
AU - Ma, Jing
AU - Wu, Gang
AU - Patel, Samir N.
AU - Heatley, Susan L.
AU - Phillips, Letha A.
AU - Song, Guangchun
AU - Easton, John
AU - Parker, Matthew
AU - Chen, Xiang
AU - Rusch, Michael
AU - Boggs, Kristy
AU - Vadodaria, Bhavin
AU - Hedlund, Erin
AU - Drenberg, Christina
AU - Baker, Sharyn
AU - Pei, Deqing
AU - Cheng, Cheng
AU - Huether, Robert
AU - Lu, Charles
AU - Fulton, Robert S.
AU - Fulton, Lucinda L.
AU - Tabib, Yashodhan
AU - Dooling, David J.
AU - Ochoa, Kerri
AU - Minden, Mark
AU - Lewis, Ian D.
AU - To, L. Bik
AU - Marlton, Paula
AU - Roberts, Andrew W.
AU - Raca, Gordana
AU - Stock, Wendy
AU - Neale, Geoffrey
AU - Drexler, Hans G.
AU - Dickins, Ross A.
AU - Ellison, David W.
AU - Shurtleff, Sheila A.
AU - Pui, Ching Hon
AU - Ribeiro, Raul C.
AU - Devidas, Meenakshi
AU - Carroll, Andrew J.
AU - Heerema, Nyla A.
AU - Wood, Brent
AU - Borowitz, Michael J.
AU - Gastier-Foster, Julie M.
AU - Raimondi, Susana C.
AU - Mardis, Elaine R.
AU - Wilson, Richard K.
AU - Downing, James R.
AU - Hunger, Stephen P.
AU - Loh, Mignon L.
AU - Mullighan, Charles G.
N1 - Funding Information: We thank J. Morris, E. Walker and A. Merriman for performing SNP and gene expression microarrays and G. Zambetti and P. Brindle for insightful discussions of TP53 and CREBBP mutational data, respectively. We also thank H. Mulder, R. Collins, M. Barbato, E. Stonerock, E. Pinto and M. Ellis for technical assistance, the Tissue Resources Core facility and the Flow Cytometry and Cell Sorting Core facility of the St. Jude Children’s Research Hospital (SJCRH). This work was supported by The Henry Schueler 41&9 Foundation in conjunction with Partnership for Cures, the St. Baldrick’s Foundation, US National Cancer Institute (NCI) grant RC4CA156329, US National Institutes of Health (NIH) grants CA21765 and U01 GM92666, the American Association for Cancer Research (AACR) Gertrude B. Elion Cancer Research Award and the American Lebanese and Syrian Associated Charities (ALSAC) of SJCRH. Support was also provided by NCI grants to the Children’s Oncology Group, including CA98543, CA98413 and CA114766. L.H. was supported by the Swedish Research Council. S.P.H. is the Ergen Family Chair in Pediatric Cancer. M.L.L. is a Clinical Scholar in the Leukemia Lymphoma Society and supported by the Frank A. Campini Foundation. C.G.M. is a Pew Scholar in the Biomedical Sciences and a St. Baldrick’s Scholar. M.L.L. and E.D.-F. were supported by the Team Connor Foundation, and S.N.P. was supported by 5R25CA023944 from NCI. This paper is dedicated to Henry ‘Hank’ Schueler who died from complications of hypodiploid ALL and whose Foundation is dedicated to finding a cure for hypodiploid ALL in his memory and to James B. Nachman who was instrumental in the genesis of this project and who recently passed away.
PY - 2013/3
Y1 - 2013/3
N2 - The genetic basis of hypodiploid acute lymphoblastic leukemia (ALL), a subtype of ALL characterized by aneuploidy and poor outcome, is unknown. Genomic profiling of 124 hypodiploid ALL cases, including whole-genome and exome sequencing of 40 cases, identified two subtypes that differ in the severity of aneuploidy, transcriptional profiles and submicroscopic genetic alterations. Near-haploid ALL with 24-31 chromosomes harbor alterations targeting receptor tyrosine kinase signaling and Ras signaling (71%) and the lymphoid transcription factor gene IKZF3 (encoding AIOLOS; 13%). In contrast, low-hypodiploid ALL with 32-39 chromosomes are characterized by alterations in TP53 (91.2%) that are commonly present in nontumor cells, IKZF2 (encoding HELIOS; 53%) and RB1 (41%). Both near-haploid and low-hypodiploid leukemic cells show activation of Ras-signaling and phosphoinositide 3-kinase (PI3K)-signaling pathways and are sensitive to PI3K inhibitors, indicating that these drugs should be explored as a new therapeutic strategy for this aggressive form of leukemia.
AB - The genetic basis of hypodiploid acute lymphoblastic leukemia (ALL), a subtype of ALL characterized by aneuploidy and poor outcome, is unknown. Genomic profiling of 124 hypodiploid ALL cases, including whole-genome and exome sequencing of 40 cases, identified two subtypes that differ in the severity of aneuploidy, transcriptional profiles and submicroscopic genetic alterations. Near-haploid ALL with 24-31 chromosomes harbor alterations targeting receptor tyrosine kinase signaling and Ras signaling (71%) and the lymphoid transcription factor gene IKZF3 (encoding AIOLOS; 13%). In contrast, low-hypodiploid ALL with 32-39 chromosomes are characterized by alterations in TP53 (91.2%) that are commonly present in nontumor cells, IKZF2 (encoding HELIOS; 53%) and RB1 (41%). Both near-haploid and low-hypodiploid leukemic cells show activation of Ras-signaling and phosphoinositide 3-kinase (PI3K)-signaling pathways and are sensitive to PI3K inhibitors, indicating that these drugs should be explored as a new therapeutic strategy for this aggressive form of leukemia.
UR - http://www.scopus.com/inward/record.url?scp=84874647204&partnerID=8YFLogxK
U2 - 10.1038/ng.2532
DO - 10.1038/ng.2532
M3 - Article
C2 - 23334668
AN - SCOPUS:84874647204
SN - 1061-4036
VL - 45
SP - 242
EP - 252
JO - Nature Genetics
JF - Nature Genetics
IS - 3
ER -