Deferred treatment as a viable option for selected patients with mantle cell lymphoma

7567Background: While mantle cell lymphoma (MCL) has historically been treated at the time of diagnosis, we recently reported a national cohort analysis which identified a subset of patients who can safely defer therapy (Cohen et. al, ASH 2015), validating previously reported single-center findings (Martin et al, JCO 2009). We conducted a multicenter analysis of MCL patients with additional clinical data to better describe the role of deferred therapy in MCL. Methods: Patients ≥ 18 years old who received initial treatment for newly diagnosed MCL between 1995-2015 at one of four academic sites were included. Deferred therapy was defined as receipt of first treatment > 90 days following diagnosis. We identified variables associated with receipt of deferred therapy and evaluated the impact of deferred therapy, demographic factors and MIPI components on progression-free (PFS) and overall survival (OS) in multivariable regression models. Results: Of 356 patients, 71 (20%) received deferred therapy with a media...