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PredicateObject
rdf:type
lifeskim:mentions
pubmed:issue
7
pubmed:dateCreated
2011-2-18
pubmed:abstractText
Deregulated expression of CRLF2 (CRLF2-d) arises via its juxtaposition to the IGH@ enhancer or P2RY8 promoter. Among 865 BCP-ALL children treated on MRC ALL97, 52 (6%) had CRLF2-d, but it was more prevalent among Down syndrome patients (54%). P2RY8-CRLF2 (n = 43) was more frequent than IGH@-CRLF2 (n = 9). CRLF2-d was not associated with age, sex, or white cell count, but IGH@-CRLF2 patients were older than P2RY8-CRLF2 patients (median 8 vs 4 years, P = .0017). Patients with CRLF2-d were more likely to present with enlarged livers and spleens (38% vs 18%, P < .001). CRLF2-d was not seen in conjunction with established chromosomal translocations but 6 (12%) cases had high hyperdiploidy, and 5 (10%) had iAMP21. Univariate analysis suggested that CRLF2-d was associated with an inferior outcome: (event-free survival [EFS] hazard ratio 2.27 [95% confidence interval 1.48-3.47], P < .001; OS 3.69 [2.34-5.84], P < .001). However, multivariate analysis indicated that its effect was mediated by other risk factors such as cytogenetics and DS status (EFS 1.45 [0.88-2.39], P = .140; OS 1.90 [1.08-3.36], P = .027). Although the outcome of IGH@-CRLF2 patients appeared inferior compared with P2RY8-CRLF2 patients, the result was not significant (EFS 2.69 [1.15-6.31], P = .023; OS 2.86 [1.15-6.79], P = .021). Therefore, we concluded that patients with CRLF2-d should be classified into the intermediate cytogenetic risk group.
pubmed:commentsCorrections
pubmed:language
eng
pubmed:journal
pubmed:citationSubset
AIM
pubmed:chemical
pubmed:status
MEDLINE
pubmed:month
Feb
pubmed:issn
1528-0020
pubmed:author
pubmed:issnType
Electronic
pubmed:day
17
pubmed:volume
117
pubmed:owner
NLM
pubmed:authorsComplete
Y
pubmed:pagination
2129-36
pubmed:dateRevised
2011-6-22
pubmed:meshHeading
pubmed-meshheading:21106984-Adolescent, pubmed-meshheading:21106984-Child, pubmed-meshheading:21106984-Child, Preschool, pubmed-meshheading:21106984-Chromosome Aberrations, pubmed-meshheading:21106984-Disease-Free Survival, pubmed-meshheading:21106984-Down Syndrome, pubmed-meshheading:21106984-Enhancer Elements, Genetic, pubmed-meshheading:21106984-Female, pubmed-meshheading:21106984-Gene Expression, pubmed-meshheading:21106984-Genes, Immunoglobulin Heavy Chain, pubmed-meshheading:21106984-Humans, pubmed-meshheading:21106984-In Situ Hybridization, Fluorescence, pubmed-meshheading:21106984-Infant, pubmed-meshheading:21106984-Kaplan-Meier Estimate, pubmed-meshheading:21106984-Male, pubmed-meshheading:21106984-Precursor B-Cell Lymphoblastic Leukemia-Lymphoma, pubmed-meshheading:21106984-Prognosis, pubmed-meshheading:21106984-Promoter Regions, Genetic, pubmed-meshheading:21106984-Receptors, Cytokine, pubmed-meshheading:21106984-Receptors, Purinergic P2, pubmed-meshheading:21106984-Translocation, Genetic
pubmed:year
2011
pubmed:articleTitle
Demographic, clinical, and outcome features of children with acute lymphoblastic leukemia and CRLF2 deregulation: results from the MRC ALL97 clinical trial.
pubmed:affiliation
Leukaemia Research Cytogenetics Group, Northern Institute for Cancer Research, Newcastle University, Newcastle-upon-Tyne, UK.
pubmed:publicationType
Journal Article, Clinical Trial