Table 1. Patient Characteristics (n = 57).

Characteristic	Value or Number of Patients	%
Age, median (range), years	63 (36-78)
Male	31	54.4
Heavy Chain
IgG	33	58.9
IgA	15	26.3
IgD	2	3.5
IgM	1	1.8
Light chain only	6	10.5
Light Chain, Lambda	18	31.6
International staging system
I	13	22.8
II	34	59.6
III	7	12.3
Missing	3	5.3
β2-microglobulin level, median (range), mg/L	3.2 (1.4-11.3)
Patients with β2-microglobulin > 5.5 mg/L	6	10.5
Creatinine level, median (range), mg/dL	1.0 (0.6-2.5)
Albumin level, median (range), g/dL	4.1 (3.1-4.8)
Cytogenetics
Deletion 13q	17	29.8
Deletion 17p	8	14
t(4;14)	3	5.3
t(11;14)	6	10.5
High risk	11	19.3
Missing, not done	7	12.3