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Table 2 Sample characteristics and association with SLLP1 expression

From: Cancer-testis antigen SLLP1 represents a promising target for the immunotherapy of multiple myeloma

Characteristics

SLLP1-positive

SLLP1-negative

Sig.

Total (N = 394)

99 (25.1)

296 (74.9)

 

Age at time of sample collection (years)

 ≤60

64 (21.1)

240 (78.9)

0.001

 >60

35 (38.9)

55 (61.1)

 

BM-infiltrating plasma cells (%)

 <10

24 (11.6)

183 (88.4)

0.000

 10–30

19 (33.3)

38 (66.7)

 

 ≥30

37 (53.6)

32 (46.4)

 

Serum paraprotein (g/dL)

 <5 (IgG), <3 (IgA)

8 (14.3)

48 (85.7)

0.061

 5–7 (IgG), 3–5 (IgA)

7 (24.1)

22 (75.9)

 

 >7 (IgG), >5 (IgA)

57 (30.0)

133 (70.0)

 

Involved serum free light chains (mg/L)

 ≤100

6 (30.0)

14 (70.0)

0.129

 >100

3 (10.0)

27 (90.0)

 

Serum albumin (g/dL)

 ≥3.5

67 (21.8)

241 (78.2)

0.006

 <3.5

19 (43.2)

25 (56.8)

 

β2-microglobulin (mg/L)

 <3.5

22 (18.6)

96 (81.4)

0.019

 ≥3.5

18 (35.3)

33 (64.7)

 

Serum LDH (U/L)

 ≤300

75 (23.0)

251 (77.0)

0.082

 >300

13 (35.1)

23 (63.9)

 

Hemoglobin (g/dL)

 >10.0

6 (27.3)

16 (72.7)

0.043

 9.9–8.5

16 (41.0)

23 (59.0)

 

 <8.5

55 (22.4)

190 (77.6)

 

Serum calcium (mmol/L)

 ≤2.6

79 (22.8)

267 (77.2)

0.015

 >2.6

9 (47.4)

10 (52.6)

 

Serum creatinine (mg/dL)

 ≤2.0

78 (22.5)

269 (77.5)

0.008

 >2.0

9 (50.0)

9 (50.0)

 

Treatment status

 Untreated

25 (44.6)

31 (55.4)

0.003

 Chemotherapy

8 (22.2)

28 (77.8)

 

 AutoSCT

19 (29.2)

46 (70.8)

 

 AlloSCT

47 (19.9)

189 (80.1)

 
  1. A total of 394 samples from 177 patients with MM were classified according to clinical features at the time the given sample was collected. Information on percentage of BM-infiltrating plasma cells (N = 333), serum paraprotein (N = 275), albumin (N = 352), β2-microglobulin (N = 169), LDH (N = 362), hemoglobin (N = 306), calcium (N = 365), and creatinine (N = 365) were available for fewer samples. Free light chains are only given for the 50 samples from patients with light chain myeloma. P values as calculated by Chi-square test are indicated in the column on the right.
  2. BM bone marrow, LDH lactate dehydrogenase.