This multicenter, single-arm, open-label phase II study evaluated the survival efficacy of 2 years of rituximab-maintenance therapy in patients with stage III-IV CD20-positive MZL who had responded to first-line R-CVP (rituximab, cyclophosphamide, vincristine, and prednisolone).
Patients with relapsing disease after at least one CD20-based therapy have several recently approved chemotherapy-free options including B cell receptor inhibitors such ibrutinib (approved specifically in MZL) and immunomodulatory agents such as lenalidomide and rituximab (FDA approved in MZL and FL).
Patients with histologically confirmed MZL of all subtypes who received ≥1 prior therapy with an anti-CD20 antibody-containing regimen were treated with 560 mg ibrutinib orally once daily until progression or unacceptable toxicity.
Eleven patients with PCBL, namely primary cutaneous follicle center lymphoma (n = 9) and primary cutaneous marginal zone lymphoma (n = 2), treated with intralesional anti-CD20 antibody were retrospectively evaluated for response rate and adverse events as well as their self-perception of anti-CD20 antibody therapy and other therapies of PCBL.