Chromosomal translocations are associated with poor prognosis in chronic lymphocytic leukemia.
Blood 107, 742-751 (2005)
In chronic lymphocytic leukemia (CLL), chromosomes usually evade detailed cytogenetic analyses because cells poorly respond to the traditionally used set of mitogens. We applied novel technologies, such as stimulation of CLL cells either with CD40 ligand or with a combination of CpG-oligodeoxynucleotides and IL-2, to increase the frequency of metaphase spreads for detailed chromosome analysis in 96 patients with CLL. This approach revealed that translocations occurred in 33 of 96 (34%) of our patients with CLL. The presence of translocations defined a new prognostic subgroup because these patients have significantly shorter median treatment-free survival (24 months vs 106 months; P < .001) and significantly inferior overall survival (OS; median, 94 months) than patients without translocations (346 months; P < .001). In multivariate analysis-including Binet stage, complex karyotype, CD38 expression, and 17p deletions-translocation proved to be the prognostic marker with the highest impact for an unfavorable clinical outcome (P < .001). In summary, we identified a new subgroup of patients with CLL defined by chromosomal trans-locations and poor prognosis. Our data may facilitate the identification of molecular events crucial for transforming activity in this disease and should have implications for risk-adapted clinical management of patients with CLL.
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Publikationstyp
Artikel: Journalartikel
Dokumenttyp
Wissenschaftlicher Artikel
Typ der Hochschulschrift
Herausgeber
Schlagwörter
acute myeloid-leukemia; gene mutation status; v-h genes; b-cells; immunogenic phenotype; karyotype aberrations; somatic hypermutation; genomic aberrations; cd38 expression; abnormalities; ACUTE MYELOID-LEUKEMIA; GENE MUTATION STATUS; V-H GENES; B-CELLS; IMMUNOGENIC PHENOTYPE; KARYOTYPE ABERRATIONS; SOMATIC HYPERMUTATION; GENOMIC ABERRATIONS; CD38 EXPRESSION; ABNORMALITIES
Keywords plus
Sprache
englisch
Veröffentlichungsjahr
2005
Prepublished im Jahr
HGF-Berichtsjahr
0
ISSN (print) / ISBN
0006-4971
e-ISSN
1528-0020
ISBN
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Band: 107,
Heft: 2,
Seiten: 742-751
Artikelnummer: ,
Supplement: ,
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Verlag
American Society of Hematology
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0000-00-00
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Prüfer
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0000-00-00
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0000-00-00
Anmelder/Inhaber
weitere Inhaber
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Priorität
Begutachtungsstatus
Peer reviewed
POF Topic(s)
30501 - Systemic Analysis of Genetic and Environmental Factors that Impact Health
Forschungsfeld(er)
Genetics and Epidemiology
PSP-Element(e)
G-500700-001
Förderungen
Copyright
Erfassungsdatum
2005-12-31