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Mancini, Marco; Scappaticci, Daniela; Cimino, Giuseppe; Nanni, Mauro; Derme, Valentina; Elia, Loredana; Tafuri, Agostino; Vignetti, Marco; Vitale, Antonella; Cuneo, Antonio; Castoldi, Gianluigi; Saglio, Giuseppe; Pane, Fabrizio; Mecucci, Cristina; Camera, Andrea; Specchia, Giorgina; Tedeschi, Alessandra; Di Raimondo, Francesco; Fioritoni, Giuseppe; Fabbiano, Francesco; Marmont, Filippo; Ferrara, Felicetto; Cascavilla, Nicola; Todeschini, Giuseppe; Nobile, Francesco; Kropp, Maria Grazia; Leoni, Pietro; Tabilio, Antonio; Luppi, Mario; Annino, Luciana; Mandelli, Franco; Foà, Robin
Blood, 05/2005, Letnik: 105, Številka: 9Journal Article
The Gruppo Italiano Malattie Ematologiche dell'Adulto (GIMEMA) 0496 protocol, through the central handling of bone marrow samples at presentation, allowed us to combine cytogenetic and molecular information on a large series of adults with acute lymphoblastic leukemia (ALL) treated homogeneously, enabling us to define as broadly as possible their genetic profile and to determine the impact on outcome of the cytogenetic-molecular signature. Of 414 patients centrally processed, 325 were considered for the categorization into the following cytogenetic-molecular subgroups: normal, t(9;22)/BCR-ABL, t(4;11)/MLL-AF4, t(1;19)/E2A-PBX1, 9p/p15-p16 deletions, 6q deletions, miscellaneous structural abnormalities, and hyperdiploid. The inclusion into each subgroup was based on a hierarchical approach: molecular abnormalities with adverse prognosis had precedence over karyotypic changes with less-defined prognosis and the latter over ploidy. Patients without abnormalities and those with isolated 9p/p15-p16 deletions showed a relatively favorable outcome (median disease-free survival DFS, > 3 years). The t(9;22)/BCR-ABL, t(4;11)/MLL-AF4, t(1; 19)/E2A-PBX1 defined a group with dismal prognosis (median DFS, 7 months), whereas 6q deletions, miscellaneous aberrations, and hyperdiploidy predicted an intermediate prognosis (median DFS, 19 months). This study highlights the importance of a combined cytogenetic-molecular profiling of adult ALL at presentation as a critical independent determinant of their outcome, providing further evidence of the necessity of a risk-adapted therapeutic algorithm for an optimal management of these patients.
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