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JOURNAL ARTICLE

Non-Hodgkin lymphomas: impact of rituximab on overall survival of patients with diffuse large B-cell and follicular lymphoma

José Carlos Jaime-Pérez, Carmen Magdalena Gamboa-Alonso, Alberto Vázquez-Mellado de Larracoechea, Marisol Rodríguez-Martínez, César Homero Gutiérrez-Aguirre, Luis Javier Marfil-Rivera, David Gómez-Almaguer
Archives of Medical Research 2015, 46 (6): 454-61
26235285

BACKGROUND AND AIMS: Information comparing treatment outcome for diffuse large B cell (DLBCL) and follicular (FL) non-Hodgkin lymphoma (NHL) patients treated with schemes with and without rituximab from low- and middle-income countries is scarce. Clinical characteristics, response to therapy and long-term outcome of DLBCL and FL patients were studied.

METHODS: Patients with DLBCL and FL diagnosed over 8 years at a reference center in northeast Mexico were included. Kaplan-Meier method was used to determine overall survival (OS) and progression-free survival (PFS). Cox regression model was used to evaluate the association between risk factors, rituximab therapy and clinical outcome.

RESULTS: One hundred-sixteen patients with DLBCL and 65 with FL in advanced stages were included. Median age was 57.8 and 56 years, respectively. Clinical characteristics between groups receiving or not receiving rituximab were comparable. Stages III and IV were found in 63.8% of DLBCL and 84.6% in FL patients, respectively. OS and PFS at 60 months were 63.8 and 51.2% in DLBCL and 70.6 and 33.8% in FL. No difference in OS was found in DLBCL and FL when rituximab-based regimens vs. non rituximab-based regimens were compared, but a statistically significant difference was documented in PFS in FL patients.

CONCLUSION: Addition of rituximab to CHOP-like regimens did not improve OS in DLBCL and FL NHL subtypes. In comparison to developed countries, diagnosis of NHL was made a decade earlier and in advanced clinical stages. Cost-efficiency of adding rituximab to therapy for these patients should be assessed.

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