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J Exp Clin Cancer Res ; 36(1): 37, 2017 02 28.
Artigo em Inglês | MEDLINE | ID: mdl-28245840

RESUMO

BACKGROUND: Survival of adults with B-Acute Lymphoblastic Leukemia requires accurate risk stratification of patients in order to provide the appropriate therapy. Contemporary techniques, using clinical and cytogenetic variables are incomplete for prognosis prediction. METHODS: To improve the classification of adult patients diagnosed with B-ALL into prognosis groups, two strategies were examined and combined: the expression of the ID1/ID3/IGJ gene signature by RT-PCR and the immunophenotypic profile of 19 markers proposed in the EuroFlow protocol by Flow Cytometry in bone marrow samples. RESULTS: Both techniques were correlated to stratify patients into prognostic groups. An inverse relationship between survival and expression of the three-genes signature was observed and an immunophenotypic profile associated with clinical outcome was identified. Markers CD10 and CD20 were correlated with simultaneous overexpression of ID1, ID3 and IGJ. Patients with simultaneous expression of the poor prognosis gene signature and overexpression of CD10 or CD20, had worse Event Free Survival and Overall Survival than patients who had either the poor prognosis gene expression signature or only CD20 or CD10 overexpressed. CONCLUSION: By utilizing the combined evaluation of these two immunophenotypic markers along with the poor prognosis gene expression signature, the risk stratification can be significantly strengthened. Further studies including a large number of patients are needed to confirm these findings.


Assuntos
Antígenos CD20/metabolismo , Cadeias J de Imunoglobulina/genética , Proteína 1 Inibidora de Diferenciação/genética , Proteínas Inibidoras de Diferenciação/genética , Proteínas de Neoplasias/genética , Neprilisina/metabolismo , Leucemia-Linfoma Linfoblástico de Células Precursoras B/classificação , Adolescente , Adulto , Feminino , Perfilação da Expressão Gênica , Regulação Neoplásica da Expressão Gênica , Humanos , Imunofenotipagem , Masculino , Pessoa de Meia-Idade , Leucemia-Linfoma Linfoblástico de Células Precursoras B/genética , Leucemia-Linfoma Linfoblástico de Células Precursoras B/imunologia , Prognóstico , Análise de Sobrevida , Adulto Jovem
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