NOVEL DRUGS IN FOLLICULAR LYMPHOMA

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Giuseppe Rossi
Antonella Anastasia *
(*) Corresponding Author:
Antonella Anastasia | antonella.anastasia@gmail.com

Abstract

Follicular lymphoma(FL) is the most common indolent non-Hodgkin lymphoma and constitutes 15% to 30% of lymphoma diagnoses. The natural history of the disease is characterized by recurrent relapses and progressively shorter remissions with a median survival of 10yrs. The impossibility of a chieving a definite cure, have prompted investigations into the possible role of more effective and less toxic strategies with innovative therapeutic agents.

 Recently Casulo et al demonstrated that approximately 20% of patients with FL actually relapse within 2 years after achieving remission with R-CHOP and have a poor prognosis. It is conceivable that this particularly chemoresistant population would benefit from specifically targeting the biologic and genetic factors that likely contribute to their poor prognosis.

Evolving strategies for difficult to treat FL patients have recently considered  immunomodulatory agents, new monoclonal antibodies as well as drugs targeting selective intracellular pathways. The importance of targeting the microenvironment together with the malignant FL cell has been particularly underscored.

We review the most promising approaches, such as the combination of anti-CD20 antibodies with immunomodulatory drugs (Lenalidomide), with mAbs directed against other surface antigens such as CD22 and CD23 (epratuzumab, lumiliximab), with immunomodulatory antibodies such as PD-1, or with inhibitors of key steps in the B-cell receptor pathway signaling such as PI3K inibithors(idelalisib, duvelisib). Another highly attractive approach is the application of the bi-specific T-cell engaging (BiTE) antibody blinatumomab which targets both CD19 and CD3 antigens. Moreover, we highlight the potential of these therapies,  taking into account their toxicity. Of course we must wait for Phase III trials results to confirm the benefit of these new treatment strategies toward a new era of chemotherapy-free treatment for follicular lymphoma.


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