Statements in which the resource exists as a subject.
PredicateObject
rdf:type
lifeskim:mentions
pubmed:issue
12
pubmed:dateCreated
2009-9-18
pubmed:databankReference
pubmed:abstractText
To evaluate internal tandem duplication (ITD) insertion sites and length as well as their clinical impact in younger adult patients with FLT3-ITD-positive acute myeloid leukemia (AML), sequencing after DNA-based amplification was performed in diagnostic samples from 241 FLT3-ITD-mutated patients. All patients were treated on 3 German-Austrian AML Study Group protocols. Thirty-four of the 241 patients had more than 1 ITD, leading to a total of 282 ITDs; the median ITD length was 48 nucleotides (range, 15-180 nucleotides). ITD integration sites were categorized according to functional regions of the FLT3 receptor: juxtamembrane domain (JMD), n = 148; JMD hinge region, n = 48; beta1-sheet of the tyrosine kinase domain-1 (TKD1), n = 73; remaining TKD1 region, n = 13. ITD length was strongly correlated with functional regions (P < .001). In multivariable analyses, ITD integration site in the beta1-sheet was identified as an unfavorable prognostic factor for achievement of a complete remission (odds ratio, 0.22; P = .01), relapse-free survival (hazard ratio, 1.86; P < .001), and overall survival (hazard ratio, 1.59; P = .008). ITD insertion site in the beta1-sheet appears to be an important unfavorable prognostic factor in young adult patients with FLT3-ITD-positive AML. The clinical trials described herein have been registered as follows: AML HD93 (already published in 2003), AML HD98A (NCT00146120; http://www.ClinicalTrials.gov), and AMLSG 07-04 (NCT00151242; http://www.ClinicalTrials.gov).
pubmed:language
eng
pubmed:journal
pubmed:citationSubset
AIM
pubmed:chemical
pubmed:status
MEDLINE
pubmed:month
Sep
pubmed:issn
1528-0020
pubmed:author
pubmed:issnType
Electronic
pubmed:day
17
pubmed:volume
114
pubmed:owner
NLM
pubmed:authorsComplete
Y
pubmed:pagination
2386-92
pubmed:dateRevised
2009-11-19
pubmed:meshHeading
pubmed-meshheading:19602710-Adolescent, pubmed-meshheading:19602710-Adult, pubmed-meshheading:19602710-Aged, pubmed-meshheading:19602710-Antineoplastic Combined Chemotherapy Protocols, pubmed-meshheading:19602710-Chromatography, High Pressure Liquid, pubmed-meshheading:19602710-Drug Resistance, Neoplasm, pubmed-meshheading:19602710-Female, pubmed-meshheading:19602710-Gene Duplication, pubmed-meshheading:19602710-Humans, pubmed-meshheading:19602710-Leukemia, Myeloid, Acute, pubmed-meshheading:19602710-Male, pubmed-meshheading:19602710-Middle Aged, pubmed-meshheading:19602710-Mutagenesis, Insertional, pubmed-meshheading:19602710-Mutation, pubmed-meshheading:19602710-Polymerase Chain Reaction, pubmed-meshheading:19602710-Prognosis, pubmed-meshheading:19602710-Protein Structure, Tertiary, pubmed-meshheading:19602710-Protein-Tyrosine Kinases, pubmed-meshheading:19602710-Tandem Repeat Sequences, pubmed-meshheading:19602710-Treatment Outcome, pubmed-meshheading:19602710-fms-Like Tyrosine Kinase 3
pubmed:year
2009
pubmed:articleTitle
Insertion of FLT3 internal tandem duplication in the tyrosine kinase domain-1 is associated with resistance to chemotherapy and inferior outcome.
pubmed:affiliation
Department of Internal Medicine III, University Hospital of Ulm, Germany.
pubmed:publicationType
Journal Article, Clinical Trial, Research Support, Non-U.S. Gov't, Multicenter Study