- Participant was previously diagnosed with multiple myeloma based on standard criteria and had measurable disease. Measurable disease for secretory multiple myeloma was defined as any quantifiable serum M-protein value (generally, but not exclusively, greater than (>) 1 gram per deciliter (g/dL) immunoglobulin (Ig) G Myeloma protein (M-protein) and >0.5 g/dL Ig A) or urine light-chain excretion of equal to (=) or >200 milligram (mg)/24 hour