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An expert panel hosted by
Sequencing immune-based therapies in B-cell malignancies
with Ulric Jäger, Sagar Lonial, and Krina Patel
Saturday, June 15 | 18:00-19:30 CEST
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This ASCO 2016 oral abstract presentation took place on Sunday June 5, 9:45am–12:45pm, during the ‘Hematologic Malignancies-Lymphoma and Chronic Lymphocytic Leukemia’ session. This session was chaired by Pr Gilles Salles, Head of the Hematology Department in South Lyon hospitals, Lyon, France.
The abstract (#7504) was presented by Dr Pieternella J Lugtenburg of Erasmus MC, Rotterdam, Netherlands.
In patients with Diffuse Large B-Cell Lymphoma (DLBCL), the standard care option is R-CHOP. However, the optimal rituximab dose and schedule is yet to be determined. A randomized, phase III study (NTR number: 1014) was initiated to compare standard R-CHOP-14 and R-CHOP-14 with 4 additional rituximab administrations (375mg/m2 IV on day 8) during the initial 4 cycles.
It was hypothesized that better response rates (CR) will be achieved in the early intensification of rituximab plus 2-weekly CHOP arm (arm B) than the standard arm (arm A). The primary endpoint was metabolic complete remission rate after induction treatment.
Inclusion criteria for this study included: confirmed histologic diagnosis of DLBCL according to WHO classification, CD20+, Ann Arbor stages II–IV, and age range of 66–80 years. Patients in CR after induction treatment were randomized between observation and rituximab maintenance.
During this talk, the efficacy results of the first randomization were presented.
Intensified compared to standard rituximab did not improve CR rate, OS or PFS. In addition, no benefit was observed in any of the clinical subgroups (age or gender). Intensification of rituximab resulted in more toxicity in patients aged between 66 and 80 years, in particular neutropenia during cycles 1–4, vs. standard rituximab. Pieternella Lugtenburg concluded the talk by stating that intensification of rituximab is of no benefit.
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