Table 2.

Characteristics of follow-up cases

Case No.	Age (yr)	Gender	M-protein M	[-concentration (g/dL)a)	FLCRb)	Disease
1	83	Female	IgA, lambda	1.4	0.17	Multiple myeloma
2	74	Female	IgA, lambda	0.8	0.61	MGUS
3	79	Male	IgA, kappa	0.2	1.55	MGUS
4	86	Male	IgA, lambda	0.3	0.85	MGUS
5	74	Male	IgG, lambda	0.3	1.27	MGUS
6	82	Male	IgG, kappa	0.7	1.98	MGUS
7	73	Male	IgG, kappa	0.6	0.87	MGUS
8	77	Male	IgA, lambda	0.2	0.44	MGUS
9	75	Male	IgA, lambda	0.2	0.57	MGUS
10	80	Female	IgA, kappa	0.4	1.72	MGUS
11	70	Female	IgM, lambda	-	1.16	Disappearance of M-protein
12	76	Male	No heavy chain, lambda	-	1.02	Disappearance of M-protein

M-protein, monoclonal-protein; FLCR, free light chain ratio; MGUS, monoclonal gammopathy of undetermined significance.

^a)Concentration of M-protein,

^b)Reference range, 0.26 to 1.65.