Table 1.

Demographic and clinical data (mean values) for patients with MGUS and multiple myeloma in this study

MGUS, n = 14Multiple myeloma, n = 44
Age 64 y, 2 mo ± 5 y, 1 mo59 y, 10 mo ± 4, y 4 mo
M/F ratio 0.87:1 1.5:1
Hemoglobin level, g/dL 12.8 ± 0.1 10.5 ± 0.1
Serum creatinine level, mg/dL 1.0 ± 0.1 1.6 ± 0.1
Serum albumin level, g/dL 3.9 ± 0.1 3.2 ± 0.1
β2-microglobulin level, mg/L 2.0 ± 0.1 4.2 ± 0.2
C-reactive protein level, mg/dL 1.8 ± 0.2 1.3 ± 0.1
Heavy chain isotype (%)
    IgA 2 (14) 13 (30)
    IgG 11 (79) 22 (50)
    IgM 1 (7) 2 (4.5)
    IgD NA 1 (2)
    IgA + IgG NA 1 (2)
    Light chain NA 3 (7)
    Oligosecretory NA 2 (4.5)
Light chain isotype
    Kappa 9 34
    Lambda 5 10
Stage
    I NA 3
    II NA 3
    III NA 38
  • NA indicates not applicable.