Table 1.
Clinical and laboratory characteristics of patients.
| Patients' characteristics | N | |
|---|---|---|
| Age, median (IQR) | 956 | 69.4 (60.5–77.1) |
| Sex, female (%) | 956 | 411 (43.0) |
| Laboratory values, median (IQR) | ||
| Hemoglobin, mg/dL | 920 | 13.5 (12.2–14.6) |
| Platelets, K/µL | 916 | 236.0 (183.0–288.0) |
| Albumin, g/dL | 864 | 4.2 (3.9–4.5) |
| β2‐microglobulin mg/L | 727 | 2.3 (1.8–3.1) |
| Serum M‐protein, g/L | 727 | 9.0 (4.0–14.7) |
| Serum IgM, g/L | 912 | 7.6 (3.5–16.2) |
| Serum IgG, g/L | 901 | 8.7 (6.7–10.7) |
| Serum IgA, g/L | 899 | 1.5 (0.9–2.3) |
| LDH, UI/L | 857 | 249 (175.0–328.0) |
| Bone marrow, % | ||
| Mature lymphocytes | 601 | 14 (8–25) |
| Plasma cells | 570 | 2 (1–4) |
| IgM <5 g/L or bone marrow infiltration <10%, (%) | 926 | 440 (47.5) |
| kappa light chain, (%) | 737 | 545 (74.0) |
| MYD88 L265P mutation, (%) | 453 | 310 (68.4) |
Abbreviations: IQR, interquartile range; LDH, lactate dehydrogenase.