Patients with newly diagnosed B cell NHL will be identified. Samples will be cored from their diagnostic FFPE blocks and assayed to find lymphoma specific variants and immunoglobulin heavy chain gene rearrangements. Blood samples collected at baseline will be compared to see if variants and rearrangements can be detected in tumor specific DNA based on previous studies. Participant data will be collected, and clinical outcomes will be assessed to determine effect of mutation profiles on outcomes over 2 year follow up.