Gene expression pattern contributing to prognostic factors in childhood acute lymphoblastic leukemia

Autor(es)

Silveira, Vanessa S. ^[1] ; Scrideli, Carlos Alberto ^[1] ; Moreno, Daniel A. ^[2] ; Yunes, Jose Andres ^[3] ; Queiroz, Rosane G. P. ^[1] ; Toledo, Silvia C. ^[4] ; Lee, Maria Lucia M. ^[4] ; Petrilli, Antonio S. ^[4] ; Brandalise, Silvia R. ^{[5, 3]} ; Tone, Luiz Gonzaga ^{[2, 1]}

Afiliação do(s) autor(es)

^[1] Univ Sao Paulo, Fac Med Ribeirao Preto, Dept Pediat, BR-14049900 Ribeirao Preto, SP - Brazil

^[2] Univ Sao Paulo, Fac Med Ribeirao Preto, Dept Genet, BR-14049900 Ribeirao Preto, SP - Brazil

^[3] Boldrini Inst, Campinas, SP - Brazil

^[4] Univ Fed Sao Paulo, Inst Pediat Oncol, Sao Paulo, SP - Brazil

^[5] Univ Estadual Campinas, Campinas, SP - Brazil

• Tipo de documento: Artigo Científico
• Fonte: Leukemia & Lymphoma; v. 54, n. 2, p. 310-314, FEB 2013.
• Citações Web of Science: 18

Resumo

The present study evaluated the expression profile of 19 genes previously reported in microarray studies and associated with resistance or sensitivity to vincristine (RPLP2, CD44, TCFL5, KCNN1, TRIM24), prednisolone (F8A, CDK2AP1, BLVRB, CD69), daunorubicin (MAP3K12, SHOC2, PCDH9, EGR1, KCNN4) and L-asparaginase (GPR56, MAN1A1, CLEC11A, IGFBP7, GATA3). We studied 140 bone marrow samples at diagnosis from children with acute lymphoblastic leukemia (ALL) treated according to the Brazilian Childhood Leukemia Treatment Group (GBTLI) ALL-99 protocol. The expression profiles of the genes listed above were analyzed by real-time quantitative polymerase chain reaction (PCR) and then related to the clinical and biological prognostic factors. The results showed significant associations (p <= 0.05) between the expression levels of genes GPR56, BLVRB, IGFBP7 and white blood cell (WBC) count at diagnosis; GATA3, MAN1A1, CD44, MAP3K12, CLEC11A, SHOC2 and CD10 B-lineage ALL; TCFL5 and bone marrow status at day 14; MAP3K12 and TRIM24 and bone marrow status at day 28; and CD69, TCFL5 and TRIM24 genes and ETV6/RUNX1 positive ALL. The up-regulation of SHOC2 was also associated with better 5-year event-free survival (EFS) in univariate and multivariate analysis (p = 0.02 and p = 0.03, respectively). These findings highlight genes that could be associated with clinical and biological prognostic factors in childhood ALL, suggesting that these genes may characterize and play a role in the treatment outcome of some ALL subsets. (AU)

• Processo FAPESP: 02/03182-8 - Genoma clínico: avaliação dos grupos filiados
• Beneficiário: Silvia Regina Brandalise
• Modalidade de apoio: Auxílio à Pesquisa - Programa GENOMA
• Processo FAPESP: 05/50731-5 - Estudo do padrão da expressão de genes relacionados à resistência/sensibilidade aos quimioterápicos na leucemia linfóide aguda da criança e do adolescente
• Beneficiário: Luiz Gonzaga Tone
• Modalidade de apoio: Auxílio à Pesquisa - Regular
• Processo FAPESP: 01/13206-9 - Padrão da expressão gênica da leucemia linfoblástica aguda da infância associada à resistência à quimioterapia
• Beneficiário: Luiz Gonzaga Tone
• Modalidade de apoio: Auxílio à Pesquisa - Programa GENOMA