Gene expression pattern contributing to prognostic factors in childhood acute lymphoblastic leukemia
| Autor: | Luiz Gonzaga Tone, Maria Lúcia M. Lee, Carlos Alberto Scrideli, Antonio Sergio Petrilli, José Andrés Yunes, Daniel Antunes Moreno, Silvia Regina Caminada de Toledo, Rosane G.P. Queiroz, Vanessa da Silva Silveira, Silvia Regina Brandalise |
|---|---|
| Rok vydání: | 2012 |
| Předmět: |
Cancer Research
Vincristine Adolescent Childhood leukemia Biology White blood cell medicine Humans Child Childhood Acute Lymphoblastic Leukemia Gene Expression Regulation Leukemic Gene Expression Profiling Infant Hematology Precursor Cell Lymphoblastic Leukemia-Lymphoma Prognosis medicine.disease Gene expression profiling ETV6 medicine.anatomical_structure Real-time polymerase chain reaction Oncology Child Preschool Immunology Bone marrow PROGNÓSTICO medicine.drug |
| Zdroj: | Repositório Institucional da USP (Biblioteca Digital da Produção Intelectual) Universidade de São Paulo (USP) instacron:USP |
| ISSN: | 1029-2403 1042-8194 |
| DOI: | 10.3109/10428194.2012.710330 |
| Popis: | 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. |
| Databáze: | OpenAIRE |
| Externí odkaz: |
|