Management Strategies for Elderly Patients with Diffuse Large B-Cell Lymphoma.

Diffuse large B-cell lymphoma (DLBCL) is the most commonly occurring form of lymphoma and most commonly presents in the sixth decade. Given the dramatic rise of the incidence of lymphoma since the late 1990s in patients who present over the age of 65, and the expected increase in the prevalence of DLBCL with the ageing population, defining appropriately tailored modern therapy for elderly DLBCL patients is an increasingly important clinical concern. Moreover, age has been one of the most important adverse prognostic features, with numerous studies associating older age with inferior outcomes. Although it has been well established that B-cell diversity decreases with age, and that the loss of diversity can be associated with clonal expansion of B-cells, it remains unknown how this or other factors contribute to the pathogenesis and poor prognosis in elderly patients with DLBCL. Furthermore, elderly patients often have more co-morbid illnesses, worse performance status, less haematologic reserve and altered pharmacokinetics related to decreased metabolism and clearance of drugs. We examine the impact of these factors on therapeutic decision-making in patients with DLBCL and explore treatment alternatives for elderly individuals. Future research is needed not only to address treatment strategies but also to define the biologic heterogeneity between younger and older patients with DLBCL, so that more rational therapeutic approaches can be investigated.