Analysis of best response of percentage change in 24-hour urine protein from baseline in renal-evaluable patients (baseline 24-hour urine protein of >500 mg/24 h and at least 1 postbaseline 24-hour urine protein measurement). Renal responders are denoted with deep blue bars (≥30% decrease in proteinuria or fall in 24-hour urine protein below 500 mg/24 h). Renal stable patients are denoted with light blue bars (neither response nor progression). Renal progressors are denoted by red bars (≥25% decrease in eGFR). For each individual patient, time since last exposure to antiplasma cell therapy (months), light chain disease type (κ or λ), and hematologic disease status at the time of study enrollment is reported.