OS by stage in patients with staging data at all intervals (n = 193). OS (in years) from 3 months of starting first-line treatment based on the modified Mayo 2004 (A) and Mayo 2012 (B) stage in AL amyloidosis patients at 3 months. OS (in years) from 6 months of starting first-line treatment based on the modified Mayo 2004 (C) and Mayo 2012 (D) stage in AL amyloidosis patients at 6 months.