Table 1.

Clinical characteristics of young adults with multiple myeloma

Characteristic	Whole group (n = 22)	Total population (n = 258)
CRAB Criteria
Haemoglobin < 10 g/dL	15(68.2%)	162(62.7%)
Creatinine > 2 mg/dL	11(50%)	94(36.4%)
Calcium > 11 mg/dL	2(9.1%)	68(26%)
Bony lesions	13(59%)	195(75.5%)
Immunofixation
IgG kappa	7(31.8%)	123(54.6%)
IgG lambda	4(18.2%)
IgA kappa	1(4.5%)	26(11.5%)
Kappa light chain	5(22.7%)	28(12.4%)
Lambda light chain	4(18.2%)	46(20.4%)
ISS stage
Stage 1	4(18.2%)	43(17.4%)
Stage 2	7(31.8%)	81(32.9%)
Stage 3	11(50%)	122(49.5%)