ZAP-70, IgVh, and cytogenetics for assessing prognosis in chronic lymphocytic leukemia.
Cancer Biomark
; 6(1): 1-9, 2010.
Article
em En
| MEDLINE
| ID: mdl-20164537
ABSTRACT
BACKGROUND:
New prognostic factors such as IgVh mutational status, ZAP-70 protein expression and cytogenetic abnormalities have shown to offer important prognostic information for patients with chronic lymphocytic leukemia (CLL). Our aim was to evaluate the optimal cut-off for IgVh mutational status, ZAP-70 expression and cytogenetic abnormalities in association with disease progression defined as the need for treatment within 3~years from diagnosis in 170 patients with B-CLL. DESIGN ANDMETHODS:
Receiver operating characteristics (ROC) analysis and multivariate general linear models (GLMs) were used to investigate the most significant cut-off values of these biomarkers and their prognostic impact.RESULTS:
Our findings estimated that the optimal cut-off for IgVh mutation status and for ZAP-70 protein expression was 97% and 16.5% respectively and a high concordance between the two was demonstrated. We identified 30% as being the best-cut-off for 17p-, 11q- and 6q-. In univariate analysis 17p- was found to be a significant predictor of the event only for the whole population. Multivariate analysis including all biological parameters, identified 11q deletion as the only significant regressor.CONCLUSIONS:
We assessed that IgVh mutational status, ZAP-70 protein and 6q- are powerful prognostic markers. Analyses of all these factors revealed that 11q deletion was the strongest predictor of disease progression in B-CLL.
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Base de dados:
MEDLINE
Assunto principal:
Região Variável de Imunoglobulina
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Leucemia Linfocítica Crônica de Células B
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Biomarcadores Tumorais
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Cadeias Pesadas de Imunoglobulinas
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Proteína-Tirosina Quinase ZAP-70
Idioma:
En
Ano de publicação:
2010
Tipo de documento:
Article