Table 2.
Comparison of serum GITRL and sGITR levels between pSS patients with normal or abnormal laboratory values.
| Parameter | GITRL (ng/mL) | sGITR (ng/mL) | ||||
|---|---|---|---|---|---|---|
| Normal | Abnormal | P value | Normal | Abnormal | P value | |
| Mean ± SD (n) |
Mean ± SD (n) |
Mean ± SD (n) |
Mean ± SD (n) |
|||
| A—SSA | 3.23 ± 3.63 (7) |
6.76 ± 7.52 (34) |
0.1362 | 3.91 ± 2.14 (7) |
6.01 ± 3.71 (34) |
0.1657 |
| A—SSB | 6.41 ± 7.38 (22) |
5.95 ± 7.03 (19) |
0.5830 | 5.71 ± 3.57 (22) |
5.60 ± 3.63 (19) |
0.8857 |
| ANA | 1.22 ± 0.42 (5) |
6.85 ± 7.32 (36) |
**0.0050 | 2.51 ± 0.83 (5) |
6.09 ± 3.58 (36) |
*0.0114 |
| CRP | 4.41 ± 4.75 (25) |
15.87 ± 8.76 (16) |
**0.0078 | 4.76 ± 3.30 (25) |
7.05 ± 3.60 (16) |
*0.0231 |
| RF | 2.47 ± 1.72 (17) |
8.98 ± 8.64 (24) |
**0.0050 | 3.85 ± 1.85 (17) |
6.93 ± 3.95 (24) |
**0.0075 |
| IgM | 5.01 ± 6.30 (33) |
10.48 ± 8.96 (8) |
*0.0431 | 5.31 ± 3.39 (33) |
7.08 ± 4.13 (8) |
0.2428 |
| IgA | 2.34 ± 1.94 (13) |
7.93 ± 7.92 (28) |
**0.0069 | 3.87 ± 2.14 (13) |
6.48 ± 3.81 (28) |
*0.0381 |
| WBC | 3.29 ± 2.96 (21) |
9.18 ± 8.91 (20) |
*0.0158 | 4.10 ± 2.18 (21) |
7.28 ± 4.03 (20) |
*0.0110 |
P < 0.05 means significant difference (*P < 0.05; **P < 0.01).
Laboratory values such as A-SSA, A-SSB, ANA, and RF positive were defined as abnormal, while laboratory parameters such as CRP, IgM, and IgA above limit values were defined as abnormal. In addition, WBC abnormal means leukopenia.
A-SSA: anti-Ro/SSA antibody; A-SSB: anti-La/SSB antibody; ANA: antinuclear antibody; CRP: C-reactive protein; RF: rheumatoid factor; IgM: immunoglobulin M; IgA: immunoglobulin A; WBC: white blood count.