Statements in which the resource exists as a subject.
PredicateObject
rdf:type
lifeskim:mentions
pubmed:issue
4
pubmed:dateCreated
2007-8-6
pubmed:abstractText
Derivative chromosome 9 deletions are seen in 10% to 15% of patients with chronic myelogenous leukemia and have been associated with a poor prognosis; however, no studies have been performed in the context of a randomized clinical trial. We developed a DNA-based deletion screen and investigated 339 chronic phase patients treated with interferon-alpha as first-line therapy in 3 controlled German studies with a median observation time of 7 years. Deletions were detected in pretreatment DNA of 59 of 339 (17%) patients. Of these, 21 spanned the ABL/BCR junction and 38 were centromeric (n = 20) or telomeric (n = 18) of the breakpoint. There was no significant difference in overall survival between deleted and nondeleted patients. Patients with breakpoint-spanning deletions had poorer survival compared with patients without deletions (4.7 versus 7.8 years; P = .003), but this was not significant when censored at allogeneic stem cell transplantation (n = 129) or imatinib (n = 62) treatment in the first chronic phase (P = .078). Unexpectedly, deletions that did not span the breakpoint were associated with improved survival compared with cases without deletions (P = .001). Multiple Cox regression analysis indicated that deletion status (P = .007), age (P = .018), and spleen enlargement (P < .001) were significant independent indicators of survival and confirmed that only deletions spanning the ABL/BCR breakpoint were associated with an adverse prognosis (P = .039).
pubmed:language
eng
pubmed:journal
pubmed:citationSubset
AIM
pubmed:chemical
pubmed:status
MEDLINE
pubmed:month
Aug
pubmed:issn
0006-4971
pubmed:author
pubmed:issnType
Print
pubmed:day
15
pubmed:volume
110
pubmed:owner
NLM
pubmed:authorsComplete
Y
pubmed:pagination
1283-90
pubmed:dateRevised
2009-11-19
pubmed:meshHeading
pubmed-meshheading:17456720-Adolescent, pubmed-meshheading:17456720-Adult, pubmed-meshheading:17456720-Aged, pubmed-meshheading:17456720-Aged, 80 and over, pubmed-meshheading:17456720-Blast Crisis, pubmed-meshheading:17456720-Child, pubmed-meshheading:17456720-Chromosome Deletion, pubmed-meshheading:17456720-Chromosomes, Human, Pair 9, pubmed-meshheading:17456720-Disease Progression, pubmed-meshheading:17456720-Female, pubmed-meshheading:17456720-Fusion Proteins, bcr-abl, pubmed-meshheading:17456720-Genes, abl, pubmed-meshheading:17456720-Humans, pubmed-meshheading:17456720-Karyotyping, pubmed-meshheading:17456720-Leukemia, Myelogenous, Chronic, BCR-ABL Positive, pubmed-meshheading:17456720-Leukemia, Myeloid, Chronic, Atypical, BCR-ABL Negative, pubmed-meshheading:17456720-Male, pubmed-meshheading:17456720-Middle Aged, pubmed-meshheading:17456720-Prognosis, pubmed-meshheading:17456720-Proto-Oncogene Proteins c-bcr, pubmed-meshheading:17456720-Survival Rate
pubmed:year
2007
pubmed:articleTitle
Heterogeneous prognostic impact of derivative chromosome 9 deletions in chronic myelogenous leukemia.
pubmed:affiliation
Wessex Regional Genetics Laboratory, University of Southampton, Salisbury, United Kingdom.
pubmed:publicationType
Journal Article, Research Support, Non-U.S. Gov't