RT Journal Article T1 R-ESHAP as salvage therapy for patients with relapsed or refractory diffuse large B-cell lymphoma: the influence of prior exposure to rituximab on outcome. A GEL/TAMO study. A1 Martín, Alejandro A1 Conde, Eulogio A1 Arnan, Montserrat A1 Canales, Miguel A A1 Deben, Guillermo A1 Sancho, Juan M A1 Andreu, Rafael A1 Salar, Antonio A1 García-Sanchez, Pedro A1 Vázquez, Lourdes A1 Nistal, Sara A1 Requena, María-José A1 Donato, Eva M A1 González, José A A1 León, Angel A1 Ruiz, Concepción A1 Grande, Carlos A1 González-Barca, Eva A1 Caballero, María-Dolores K1 R-ESHAP K1 Diffuse large B-Cell lymphoma K1 Rituximab K1 Salvage therapy K1 Protocolos de quimioterapia antineoplásica combinada K1 Tratamiento de última línea K1 Linfoma de células B grandes difuso AB BACKGROUNDThe role of re-treatment with rituximab in aggressive B-cell lymphomas still needs to be defined. This study evaluated the influence of prior exposure to rituximab on response rates and survival in patients with diffuse large B-cell lymphoma treated with rituximab plus etoposide, cytarabine, cisplatinum and methylprednisolone (R-ESHAP).DESIGN AND METHODSWe retrospectively analyzed 163 patients with relapsed or refractory diffuse large B-cell lymphoma who received R-ESHAP as salvage therapy with a curative purpose. Patients were divided into two groups according to whether rituximab had been administered (n=94, "R+" group) or not (n=69, "R-" group) prior to R-ESHAP.RESULTSResponse rates were significantly higher in the R- group in the univariate but not in the multivariate analysis. In the analysis restricted to the R+ group, we observed very low complete remission and overall response rates in patients with primary refractory disease (8% and 33%, respectively), as compared to those in patients who were in first partial remission (41% and 86%) or who had relapsed disease (50% and 75%) (p<0.01 in both cases). Overall, 60% and 65% of patients in the R+ and R- groups, respectively, underwent stem-cell transplantation after the salvage therapy. With a median follow-up of 29 months (range, 6-84), patients in the R+ group had significantly worse progression-free survival (17% vs. 57% at 3 years, p<0.0001) and overall survival (38% v 67% at 3 years, p=0.0005) than patients in the R- group. Prior exposure to rituximab was also an independent adverse prognostic factor for both progression-free survival (RR: 2.0; 95% CI: 1.2-3.3, p=0.008) and overall survival (RR: 2.2; 95% CI: 1.3-3.9, p=0.004).CONCLUSIONSR-ESHAP was associated with a high response rate in patients who were not refractory to upfront rituximab-based chemotherapy. However, the survival outcome was poor for patients previously exposed to rituximab, as compared to in those who had not previously been treated with rituximab. PB Ferrata Storti Foundation SN 0390-6078 YR 2008 FD 2008-12 LK http://hdl.handle.net/10668/1286 UL http://hdl.handle.net/10668/1286 LA en NO Martín A, Conde E, Arnan M, Canales MA, Deben G, Sancho JM, et al. R-ESHAP as salvage therapy for patients with relapsed or refractory diffuse large B-cell lymphoma: the influence of prior exposure to rituximab on outcome. A GEL/TAMO study. Haematologica. 2008 ; 93(12):1829-36 NO Journal Article; Multicenter Study; "Comment in Salvage therapy for relapsed or refractory diffuse large B-cell lymphoma: impact of prior rituximab. [Haematologica. 2008]" (Nota tomada de PubMed) DS RISalud RD May 5, 2025