Table 1.

Clinical characteristics of the patients included in this study

Clinical characteristic	MGUS patients	MM patients
Mean age (year)	71.7 ± 10.2	63.1 ± 8.9
BMPC (%)	6.5 ± 2.0	49.2 ± 25.0
Immunoglobulin isotype (mg/dL)
IgG	15.0 ± 7.8	23.7 ± 27.8
IgA	3.4 ± 3.9	0.4 ± 0.4
IgM	12.7 ± 24.9	0.2 ± 0.1
Serum free light chain (mg/l)
Kappa	20.9 ± 12.7	323.2 ± 540.3
Lambda	34.3 ± 36.9	509.4 ± 1,417.4
Albumin (g/l)	36.1 ± 4.0	32.5 ± 5.1
M protein (g/l)	11.2 ± 10.1	31.0 ± 22.6
β2 microglobulin (μg/ml)	2.4 ± 0.4	7.7 ± 8.2

BMPC indicates bone marrow plasma cells.