Arrows point to individuals recruited by, or mentored by a senior program member. Blue boxes indicate Rochester, MN, location; orange, Scottsdale, AZ; green, Jacksonville, FL. Lighter-colored boxes indicate recruits from outside of Mayo to the program. MGUS, monoclonal gammopathy of undetermined significance; MM, multiple myeloma; SMM, smoldering MM; HCD, heavy chain disease; Rd, low-dose dexamethasone; CyBorD, cyclophosphamide, bortezomib, and dexamethasone; LC-MGUS, light-chain MGUS; AL, amyloid light-chain.