Characteristics of the patients
| Characteristic . | Serum available (n = 30) . | No serum available (n = 60) . | P . |
|---|---|---|---|
| Median age, y | 48.1 | 58.6 | <.001 |
| Age range, y | 30-68 | 37-79 | |
| Male sex, n (%) | 29 (96.7) | 32 (53.3) | <.001 |
| Race, n (%) | |||
| White | 16 (53.3) | 39 (65.0) | .36 |
| Black | 14 (46.7) | 21 (35.0) | |
| Isotype, n (%) | |||
| IgG | 23 (76.7) | 34 (56.7) | .007 |
| IgA | 0 (0) | 14 (23.3) | |
| IgD | 3 (10.0) | 2 (3.3) | |
| Light chain | 2 (6.7) | 8 (13.3) | |
| Nonsecretory | 2 (6.7) | 2 (3.3) | |
| ISS stage, n (%) | |||
| 1 | 12 (52.2) | 26 (51.0) | .90 |
| 2 | 6 (26.1) | 11 (21.6) | |
| 3 | 5 (21.7) | 14 (27.5) | |
| β2-microglobulin, mg/L (range) | 2.9 (1.3-10.8) | 2.8 (0.9-13.9) | .53 |
| Bone marrow plasma cells, % (range) | 50 (2-95) | 50 (1-95) | .64 |
| Time to transplantation, d (range) | 207 (80-1255) | 273 (88-2709) | .014 |
| Characteristic . | Serum available (n = 30) . | No serum available (n = 60) . | P . |
|---|---|---|---|
| Median age, y | 48.1 | 58.6 | <.001 |
| Age range, y | 30-68 | 37-79 | |
| Male sex, n (%) | 29 (96.7) | 32 (53.3) | <.001 |
| Race, n (%) | |||
| White | 16 (53.3) | 39 (65.0) | .36 |
| Black | 14 (46.7) | 21 (35.0) | |
| Isotype, n (%) | |||
| IgG | 23 (76.7) | 34 (56.7) | .007 |
| IgA | 0 (0) | 14 (23.3) | |
| IgD | 3 (10.0) | 2 (3.3) | |
| Light chain | 2 (6.7) | 8 (13.3) | |
| Nonsecretory | 2 (6.7) | 2 (3.3) | |
| ISS stage, n (%) | |||
| 1 | 12 (52.2) | 26 (51.0) | .90 |
| 2 | 6 (26.1) | 11 (21.6) | |
| 3 | 5 (21.7) | 14 (27.5) | |
| β2-microglobulin, mg/L (range) | 2.9 (1.3-10.8) | 2.8 (0.9-13.9) | .53 |
| Bone marrow plasma cells, % (range) | 50 (2-95) | 50 (1-95) | .64 |
| Time to transplantation, d (range) | 207 (80-1255) | 273 (88-2709) | .014 |