Journal
INTERNATIONAL JOURNAL OF MOLECULAR SCIENCES
Volume 22, Issue 20, Pages -Publisher
MDPI
DOI: 10.3390/ijms222010916
Keywords
AL amyloidosis; biomarker; Mayo cardiac staging; NT-proBNP; plasma cell clone; serum free light chains; minimal residual disease; growth differentiation factor-15
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Systemic AL amyloidosis is a rare hematological disorder caused by clonal plasma cells producing amyloidogenic immunoglobulins. Prognosis is determined by organ involvement, biology of the plasma cell clone, and response to treatment markers. Current staging systems focus on cardiac dysfunction and renal damage. Discovery of sensitive biomarkers for early diagnosis and comprehensive disease biology assessment is crucial.
Systemic AL amyloidosis is a rare complex hematological disorder caused by clonal plasma cells which produce amyloidogenic immunoglobulins. Outcome and prognosis is the combinatory result of the extent and pattern of organ involvement secondary to amyloid fibril deposition and the biology and burden of the underlying plasma cell clone. Prognosis, as assessed by overall survival, and early outcomes is determined by degree of cardiac dysfunction and current staging systems are based on biomarkers that reflect the degree of cardiac damage. The risk of progression to end-stage renal disease requiring dialysis is assessed by renal staging systems. Longer-term survival and response to treatment is affected by markers of the underlying plasma cell clone; the genetic background of the clonal disease as evaluated by interphase fluorescence in situ hybridization in particular has predictive value and may guide treatment selection. Free light chain assessment forms the basis of hematological response criteria and minimal residual disease as assessed by sensitive methods is gradually being incorporated into clinical practice. However, sensitive biomarkers that could aid in the early diagnosis and that could reflect all aspects of organ damage and disease biology are needed and efforts to identify them are continuous.
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