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Table 2 Updated hematologic (immunochemical) response criteria

From: AL Amyloidosis

Hematologic response Criteria
Complete response (CR) Negative serum and urine IFE, normal k/l ratio
Very good partial response (VGPR) dFLC < 40 mg/l
Partial response (PR) dFLC decrease ≥ 50%
No response (NR) Other
  1. Abbreviations: IFE, immunofixation electrophoresis; dFLC, difference in concentration between involved and uninvolved free light chains
  2. From Gertz et al. ( 3,4) with permission.