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A Phase 2 Study Adding the Drugs Tazemetostat or Zanubrutinib to Usual Treatment for People with Large B-Cell Lymphoma that Returned or Did Not Respond to Earlier Treatment

Trial Status: active

This phase II trial compares the effect of tazemetostat or zanubrutinib in combination with the usual treatment with tafasitamab and lenalidomide versus the usual treatment alone in treating patients with large B-cell lymphoma that has returned after a period of responding to treatment (relapsed) or that has not responded to earlier treatment (refractory). This trial also aims to find whether lymphoma’s cell of origin affects how the cancer responds to study treatment. Tazemetostat is in a class of medications called EZH2 inhibitors. The EZH2 gene provides instructions for making a type of enzyme called a histone methyltransferase which is involved in gene expression and cell division. Blocking EZH2 may help keep cancer cells from growing. Zanubrutinib is in a class of medications called kinase inhibitors. It blocks a protein called Bruton's tyrosine kinase (BTK), which may help keep cancer cells from growing and spreading. Tafasitamab is a monoclonal antibody. A monoclonal antibody is a type of protein that can bind to certain targets in the body, such as molecules that cause the body to make an immune response (antigens). Tafasitamab binds to a protein called CD19, which is found on most B cells (a type of white blood cell) and some lymphoma cells. This may help the immune system kill cancer cells. Lenalidomide is in a class of medications called immunomodulatory agents. It works by helping the bone marrow to produce normal blood cells and by killing abnormal cells in the bone marrow. The addition of tazemetostat or zanubrutinib to usual treatment with tafasitamab and lenalidomide may be able to shrink cancer or extend the time without cancer symptoms coming back better than the usual treatment alone in patients with relapsed or refractory large B-cell lymphoma.