Microdeletions are a general feature of adult and adolescent acute lymphoblastic leukemia: Unexpected similarities with pediatric disease
(2008) In Proceedings of the National Academy of Sciences 105(18). p.6708-6713- Abstract
- We present here a genome-wide map of abnormalities found in diagnostic samples from 45 adults and adolescents with acute lymphoblastic leukemia (ALL). A 500K SNP array analysis uncovered frequent genetic abnormalities, with cryptic deletions constituting half of the detected changes, implying that microdeletions are a characteristic feature of this malignancy. Importantly, the pattern of deletions resembled that recently reported in pediatric ALL, suggesting that adult, adolescent, and childhood cases may be more similar on the genetic level than previously thought. Thus, 70% of the cases displayed deletion of one or more of the CDKN2A, PAX5, IKZF1, ETV6, RB1, and EBF1 genes. Furthermore, several genes not previously implicated in the... (More)
- We present here a genome-wide map of abnormalities found in diagnostic samples from 45 adults and adolescents with acute lymphoblastic leukemia (ALL). A 500K SNP array analysis uncovered frequent genetic abnormalities, with cryptic deletions constituting half of the detected changes, implying that microdeletions are a characteristic feature of this malignancy. Importantly, the pattern of deletions resembled that recently reported in pediatric ALL, suggesting that adult, adolescent, and childhood cases may be more similar on the genetic level than previously thought. Thus, 70% of the cases displayed deletion of one or more of the CDKN2A, PAX5, IKZF1, ETV6, RB1, and EBF1 genes. Furthermore, several genes not previously implicated in the pathogenesis of ALL were identified as possible recurrent targets of deletion. In total, the SNP array analysis identified 367 genetic abnormalities not corresponding to known copy number polymorphisms, with all but two cases (96%) displaying at least one cryptic change. The resolution level of this SNP array study is the highest used to date to investigate a malignant hematologic disorder. Our findings provide insights into the leukemogenic process and may be clinically important in adult and adolescent ALL. Most importantly, we report that microdeletions of key genes appear to be a common, characteristic feature of ALL that is shared among different clinical, morphological, and cytogenetic subgroups. (Less)
Please use this url to cite or link to this publication:
https://lup.lub.lu.se/record/1203555
- author
- Paulsson, Kajsa LU ; Cazier, Jean-Baptiste ; MacDougall, Finlay ; Stevens, Jane ; Stasevich, Irina ; Vrcelj, Nikoletta ; Chaplin, Tracy ; Lillington, Debra M ; Lister, T Andrew and Young, Bryan D
- organization
- publishing date
- 2008
- type
- Contribution to journal
- publication status
- published
- subject
- keywords
- 22), t(9, deletions, genetic abnormality
- in
- Proceedings of the National Academy of Sciences
- volume
- 105
- issue
- 18
- pages
- 6708 - 6713
- publisher
- National Academy of Sciences
- external identifiers
-
- wos:000255841600036
- scopus:44349174780
- pmid:18458336
- ISSN
- 1091-6490
- DOI
- 10.1073/pnas.0800408105
- language
- English
- LU publication?
- yes
- id
- 2c05ec36-fb55-4de7-8c1e-99e695e40674 (old id 1203555)
- date added to LUP
- 2016-04-01 12:27:32
- date last changed
- 2022-03-21 04:38:31
@article{2c05ec36-fb55-4de7-8c1e-99e695e40674,
abstract = {{We present here a genome-wide map of abnormalities found in diagnostic samples from 45 adults and adolescents with acute lymphoblastic leukemia (ALL). A 500K SNP array analysis uncovered frequent genetic abnormalities, with cryptic deletions constituting half of the detected changes, implying that microdeletions are a characteristic feature of this malignancy. Importantly, the pattern of deletions resembled that recently reported in pediatric ALL, suggesting that adult, adolescent, and childhood cases may be more similar on the genetic level than previously thought. Thus, 70% of the cases displayed deletion of one or more of the CDKN2A, PAX5, IKZF1, ETV6, RB1, and EBF1 genes. Furthermore, several genes not previously implicated in the pathogenesis of ALL were identified as possible recurrent targets of deletion. In total, the SNP array analysis identified 367 genetic abnormalities not corresponding to known copy number polymorphisms, with all but two cases (96%) displaying at least one cryptic change. The resolution level of this SNP array study is the highest used to date to investigate a malignant hematologic disorder. Our findings provide insights into the leukemogenic process and may be clinically important in adult and adolescent ALL. Most importantly, we report that microdeletions of key genes appear to be a common, characteristic feature of ALL that is shared among different clinical, morphological, and cytogenetic subgroups.}},
author = {{Paulsson, Kajsa and Cazier, Jean-Baptiste and MacDougall, Finlay and Stevens, Jane and Stasevich, Irina and Vrcelj, Nikoletta and Chaplin, Tracy and Lillington, Debra M and Lister, T Andrew and Young, Bryan D}},
issn = {{1091-6490}},
keywords = {{22); t(9; deletions; genetic abnormality}},
language = {{eng}},
number = {{18}},
pages = {{6708--6713}},
publisher = {{National Academy of Sciences}},
series = {{Proceedings of the National Academy of Sciences}},
title = {{Microdeletions are a general feature of adult and adolescent acute lymphoblastic leukemia: Unexpected similarities with pediatric disease}},
url = {{http://dx.doi.org/10.1073/pnas.0800408105}},
doi = {{10.1073/pnas.0800408105}},
volume = {{105}},
year = {{2008}},
}