Lenalidomide and Dexamethasone With/Without Transplant in Patients With Multiple Myeloma

The study is being done to compare the combination of lenalidomide and dexamethasone followed by autologous peripheral blood stem cell transplant (PBSCT) and lenalidomide and dexamethasone without PBSCT in patients with untreated multiple myeloma. This comparison will include how many subjects respond to each study treatment combination, how long their responses last, whether they live longer, and what side effects are caused by each combination.