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52 active trials for Marginal Zone Lymphoma

Pembrolizumab in MarginalzoneLymphoma A MULTICENTER OPEN LABEL SINGLE-ARM PHASE II STUDY

For marginal zone lymphoma (MZL) Rituximab in combination with conventional chemotherapy is widely used for those patients who fail local therapy or do not qualify for such. Depending on the MZL subtype Rituximab/chemotherapy is able to induce in part long remissions, but does not prevent relapse later on. In addition, chemotherapy associated toxicity is often problematic in MZL patients, who are mostly of advanced age. Thus, chemotherapy-free approaches are highly attractive for this patient group. Rituximab single agent is a widely used chemotherapy-free approach in MZL, but was significantly inferior compared to Rituximab/chlorambucil in a large randomized prospective clinical trial in treatment naïve MZL with a CR rate of 55.8% vs. 78.8%, respectively (P < 0.001). Thus, it is the major aim to develop chemotherapy-free approaches for MZL, which approach or surpass efficacy of rituximab/chemotherapy combinations, but avoid chemotherapy associated toxicities. Checkpoint inhibitors such as Pembrolizumab have revolutionized cancer treatment and have also shown first encouraging results in Non-Hodgkin lymphomas. Based on these observations it is the aim of this study to test the toxicity and efficacy of Pembrolizumab in combination with the anti-CD20 antibody Rituximab in patients with newly diagnosed or relapsed MZL in need of treatment, who are not eligible or failed local therapy, following the assumption that this novel chemotherapy-free combination is significantly more efficient than Rituximab single agent therapy and at least as efficient as rituximab/chemotherapy, but avoids chemotherapy-related toxicity.

Start: November 2020