RecruitingPhase 2Drug trialEpcoritamab and Rituximab for First-line Follicular LymphomaThe purpose of this study is to determine how effective and safe the combination of rituximab and epcoritamab is in treating patients with Follicular Lymphoma (FL) and who have not received other treatments for their lymphoma. The names of the study drugs involved in this study are: * Rituximab (a type of monoclonal antibody therapy) * Epcoritamab (a T-cell bispecific antibody)