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  • Title: Young patients with non-germinal center B-cell-like diffuse large B-cell lymphoma benefit from intensified chemotherapy with ACVBP plus rituximab compared with CHOP plus rituximab: analysis of data from the Groupe d'Etudes des Lymphomes de l'Adulte/lymphoma study association phase III trial LNH 03-2B.
    Author: Molina TJ, Canioni D, Copie-Bergman C, Recher C, Brière J, Haioun C, Berger F, Fermé C, Copin MC, Casasnovas O, Thieblemont C, Petrella T, Leroy K, Salles G, Fabiani B, Morschauser F, Mounier N, Coiffier B, Jardin F, Gaulard P, Jais JP, Tilly H.
    Journal: J Clin Oncol; 2014 Dec 10; 32(35):3996-4003. PubMed ID: 25385729.
    Abstract:
    PURPOSE: To determine whether any tumor biomarkers could account for the survival advantage observed in the LNH 03-2B trial among patients with diffuse large B-cell lymphoma (DLBCL) and low-intermediate risk according to the International Prognostic Index when treated with dose-intensive rituximab, doxorubicin, cyclophosphamide, vindesine, bleomycin, and prednisone (R-ACVBP) compared with standard rituximab, doxorubicin, cyclophosphamide, vincristine, and prednisone (R-CHOP). PATIENTS AND METHODS: Using immunohistochemistry, expression of CD10, BCL6, MUM1, MYC, and BCL2 and coexpression of MYC/BCL2 were examined. The interaction effects between each biomarker and treatment arm on survival were studied in a restricted model and a full model incorporating clinical parameters. RESULTS: Among the 379 patients analyzed in the trial, 229 tumors were evaluable for germinal center B-cell-like (GCB)/non-GCB subclassification according to the Hans algorithm. Among all the biomarkers, only the interaction between the Hans algorithm and the treatment arm was significant for progression-free survival (PFS) and overall survival (OS) in univariable (PFS, P = .04; OS, P = .01) and multivariable (PFS, P = .03; OS, P = .01) analyses. Non-GCB tumors predicted worse PFS (hazard ratio [HR], 3.21; 95% CI, 1.29 to 8.00; P = .01) and OS (HR, 6.09; 95% CI, 1.37 to 27.03; P = .02) among patients treated with R-CHOP compared with patients who received R-ACVBP, whereas there were no significant survival differences between these regimens among patients with GCB tumors. CONCLUSION: The survival benefit related to R-ACVBP over R-CHOP is at least partly linked to improved survival among patients with non-GCB DLBCL. Therefore, the Hans algorithm could be considered a theragnostic biomarker for selecting young patients with DLBCL who can benefit from an intensified R-ACVBP immunochemotherapy regimen.
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