Loss of CD20 Expression in Follicular Lymphoma after Program Anti-Tumor Therapy Including Rituximab: Literature Data and Case Report

It is the first description of a case of follicular lymphoma with a loss of CD20 antigen expression during the anti-tumor treatment including rituximab in the NN Blokhin Russian Cancer Research Center. The article discusses the tactics of further management of such patients and the effect of the CD20-negative status of follicular lymphoma tumor cells acquired during immunochemotherapy