Abstract

Abstract In the past decade, the treatment for B-cell lymphoma has been developed largely. Rituximab, a chimeric monoclonal antibody that targets against CD20 molecule, is the first monoclonal antibody approved for the treatment of B-cell lymphoma. It has been shown that rituximab exerts cytotoxic activities through CDC and ADCC, and that it directly induces apoptosis. As the other anti-CD20 antibodies, there are ofatumumab and obinutuzumab, and clinical development is on going. Antibodies against CD22 and CD79b molecules are also developed for B-cell lymphoma. In addition, the inhibitors targeting apoptosis pathways, proteasome, and other pathways of B-cell lymphoma are developing as novel drugs for B-cell lymphoma. Especially, BCR pathway is one of the most crucial pathways, and ibrutinib is a small molecule, once-daily, orally available, Bruton's tyrosine kinase (BTK) inhibitor that is under development for the treatment of B cell malignancies, including chronic lymphocytic leukemia, mantle cell lymphoma, and diffuse large B cell lymphoma, as well as follicular lymphoma. Here, I will discuss about development of novel drugs for malignant lymphoma in the present and the future.

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