Relapsed/Refractory Mantle Cell Lymphoma

This trial will enroll patients with relapsed/refractory DLBCL and MCL, with the opportunity to receive single-agent glofitamab as early as the second-line. Patients will have superficially accessible disease to enable core-needle biopsy prior to therapy initiation, and on cycle 1 day 15 and cycle 2 day 1 of therapy administration to enable high throughput molecular profiling of disease and immune dynamics while on treatment.