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.jpg): Failed to open stream: No such file or directory in C:\Inetpub\vhosts\kidney.de\httpdocs\pget.php on line 117 Haematologica
2016 ; 101
(3
): 356-62
Nephropedia Template TP
gab.com Text
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English Wikipedia
Comparison of serum free light chain and urine electrophoresis for the detection
of the light chain component of monoclonal immunoglobulins in light chain and
intact immunoglobulin multiple myeloma
#MMPMID26635032
Dejoie T
; Attal M
; Moreau P
; Harousseau JL
; Avet-Loiseau H
Haematologica
2016[Mar]; 101
(3
): 356-62
PMID26635032
show ga
Response criteria for multiple myeloma are based upon changes in monoclonal
protein levels quantified using serum and/or urine protein electrophoresis. The
latter lacks sensitivity at low monoclonal protein levels and since 2001, the
serum free light chain test has been available and its clinical utility proven,
yet guidelines have not recommended it as a replacement for urine assessment.
Herein we evaluated responses using serum free light chain measurements and serum
and urine electrophoresis after 2 and 4 cycles of therapy and after stem cell
transplantation in 25 light chain and 157 intact immunoglobulin myeloma patients
enrolled in the IFM 2007-02 MM trial. All 25 light chain patients had measurable
disease by serum free light chain and urine methods at presentation. By contrast
98 out of 157 intact immunoglobulin patients had measurable disease by serum free
light chain compared to 55 out of 157 by urine electrophoresis. In all patients
there was substantial agreement between predicate (serum/urine protein
electrophoresis) and test (serum protein electrophoresis and serum free light
chain) methods for response assessment (Weighted Kappa=0.83). Urine
immunofixation became negative in 47% light chain and 43% intact immunoglobulin
patients after 2 cycles of therapy. At this time the serum free light chain ratio
normalised in only 11% and 27% patients, respectively. In summary we found good
agreement between methods for response assessment, but the serum free light chain
test provided greater sensitivity than urine electrophoresis for monitoring. To
our knowledge this is the first report comparing both methods for response
assignment based on the International Myeloma Working Group guidelines. (Clinical
Trials Register.eu identifier: 2007-005204-40).
|*Hematopoietic Stem Cell Transplantation
[MESH]
|Antineoplastic Combined Chemotherapy Protocols/*therapeutic use
[MESH]