Table 1. Clinical variables of the patients.

Variables	Median and range
Age (years)	56 (30–85)
ISS Stage I	10 (14%)
ISS stage II	26 (39%)
ISS stage III	31 (47%)
Hemoglobin g/dL	9.2 (3.5–14.5)
Leukocytes ×109/l	6.1 (1.8–28.2)
Platelets ×109/l	211 (16–580)
β2-microglobulin (mg/dL)	10.3 (1.7–290.0)
Creatinine (mg/dL)	1.3 (0.2–6.8)
Albumin g/dL	3.3 (1.1–5.8)
Calcium (mg/dL)	9.3 (6.7–16.3)