An evaluation of pixantrone for the treatment of non-Hodgkin's lymphoma. 
The overall prognosis for patients with relapsed or refractory aggressive non-Hodgkin's lymphomas is poor.  Only a minority of patients are able to receive autologous stem cell transplantation.  Patients not transplant-eligible or patients relapsing after transplantation have an urgent need for effective treatment options.  Pixantrone is the only compound approved in Europe for this situation.  Areas covered: This review describes the clinical development of pixantrone, starting with phase I trials up to phase III trials in order to define the role of pixantrone in treatment algorithms.  The effectiveness of pixantrone is considered in relation to alternative therapeutic options.  Furthermore, the similarities and differences between pixantrone and anthracyclines is highlighted, with a special focus on the mode of action and on cardiotoxicity.  Expert opinion: Pixantrone is a valuable treatment option in relapsed and refractory aggressive lymphomas, with documented disease responses, manageable toxicities and clear distinctions to anthracyclines.  Additional studies are needed to evaluate the role of pixantrone in combination with other compounds, especially with upcoming targeted therapies, and to confirm the effectiveness of pixantrone in other lymphoma subtypes, e.g. follicular lymphomas.