Table 1.
Patients’ characteristics
| Number of patients | 200 | |
| Age (median, st. dev., range) | 67 ± 10.7 (33–87) | |
| Age of onset (median, st. dev., range) | 63.5 ± 11.2 (32–84) | |
| Gender (female/male) | 106/94 | |
| International Staging System (ISS) | 1 | 73 |
| 2 | 66 | |
| 3 | 61 | |
| Ig subtype | IgG | 115 |
| IgA | 45 | |
| IgM | 5 | |
| IgD | 1 | |
| Non-secretory | 4 | |
| Light chain | 13 | |
| others | 17 | |
| Light chain type | κ | 67% |
| λ | 33% | |
| Number of controls | 380 | |
| volunteers of blood bank | 329 | |
| employee of Institute of Immunology& Experimental Therapy | 51 | |
| Gender of controls (female/male) | 214/166 | |