Research Article

Assessment of Serum sRANKL, sRANKL/OPG Ratio, and Other Bone Turnover Markers with the Estimated 10-Year Risk of Major and Hip Osteoporotic Fractures in Rheumatoid Arthritis: A Cross-Sectional Study

Table 3

Correlations of estimated in 10-year of major osteoporosis fracture risk, hip fracture risk (FRAX score), and biomarker serum levels.

Estimated 10-year of major osteoporosis fracture risk (FRAX score)Estimated 10-year of hip fracture risk (FRAX score)

Clinical characteristics and serological features
RA disease duration (yr)0.2300.0040.2250.005
Menopausal duration (yr)0.431<0.0010.306<0.001
DAS28 score-0.0030.9750.0150.857
HAQ-Di score-0.0230.777-0.0420.607
ESR (mm/hr)0.2610.0010.2430.002
Rheumatoid factor (UI/mL)0.0610.4530.0710.377
Tumor necrosis factor-α (pg/mL)-0.0750.350-0.0520.521
Anti-CCP2 (RU/mL)0.0380.641-0.0120.882
Anti-MCV (U/mL)0.0820.3100.1040.198
Treatment characteristics
Glucocorticoid dose (mg)-0.0130.876-0.0160.838
Biomarker serum levels
Serum sRANKL levels (pmol/L)0.2370.0030.2440.002
Serum OPG levels (pg/mL)-0.0120.881-0.0060.942
sRANKL/OPG ratio0.2080.0090.2170.006
Serum DKK-1 levels (pg/mL)-0.1310.104-0.1100.173
Serum SOST levels (pg/mL)-0.2400.003-0.2090.009
Serum OC levels (ng/mL)-0.0590.468-0.0290.720
Serum CTSK levels (pg/mL)-0.0150.848-0.0530.515

FRAX: fracture risk assessment tool; DAS28: Disease Activity Score for 28 joints; HAQ-DI: Health Assessment Questionnaire Disability Index; ESR: erythrocyte sedimentation rate; ACPAs: antibodies against cyclic-citrullinated peptides/proteins included anti-CCP2 or anti-MCV; sRANKL: Soluble Receptor Activator for Nuclear Factor kappa B Ligand; OPG: osteoprotegerin; DKK-1: Dickkopf-1; SOST: sclerostin; OC: osteocalcin; CTSK: cathepsin k. Correlations between biomarker serum levels and FRAX indices were performed using Pearson test.