Continued, Long-Term Follow-Up and Lenalidomide Maintenance Therapy for Patients on BMT CTN 0702 Protocol (BMT CTN 07LT)

This study is designed to compare long-term outcomes among patients randomized on the BMT CTN 0702 protocol (NCT01109004), "A Trial of Single Autologous Transplant with or without Consolidation Therapy versus Tandem Autologous Transplant with Lenalidomide Maintenance for Patients with Multiple Myeloma". It is hypothesized that use of novel anti-myeloma agents will improve long-term progression-free survival (PFS) after high-dose melphalan followed by autologous hematopoietic cell transplantation (HCT) as compared to a second autologous transplantation.