Although follicular lymphoma (FL) and marginal zone lymphoma (MZL) share similarities, the 2 diseases have distinct biologic differences that affect their presentation and treatment. Stage I disease is more common in MZL than in FL due to marginal zone biology, for example, and stage I MZL is curable by surgery or radiation therapy. Newer therapies for both FL and MZL provide chemotherapy-free options, but they are not identical. Brüton’s tyrosine kinase inhibitors are active in relapsed or refractory MZL but not in FL, for example. CAR T-cell therapy has just been approved for treatment of FL and is an ongoing area of investigation for both diseases.
Disclosures: Dr. LaCasce has disclosed serving on the product/speakers bureau for Research to Practice. Dr. Noy has disclosed serving as a scientific advisor for ADC Therapeutics, Epizyme, EUSA, Janssen Pharmaceutica Products, LP, MorphoSys AG, and TG Therapeutics; receiving honoraria from Medscape and Pharmacyclics; receiving consulting fees from Physicians' Education Resource; and receiving grant/research support from Rafael Pharma.