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Updated: Jan 8, 2026
Imaging Features of Systemic Sclerosis-Associated Interstitial Lung Disease
Published on: June 16, 2020
Clinical significance of inflammation-coagulation-autoantibody triad in systemic sclerosis-associated interstitial
Ronghong Guo1, Xianzhe Zhou1, Jiaxin Chen1
1Third Hospital of Shanxi Medical University, Shanxi Bethune Hospital, Shanxi Academy of Medical Sciences, Tongji Shanxi Hospital, 030032, Taiyuan, China.
Background:
Interstitial lung disease (ILD) is highly prevalent among systemic sclerosis (SSc) patients and is the leading cause of mortality. This study aims to evaluate the independent and combined value of inflammatory markers, coagulation parameters, and autoantibodies for the presence of SSc-ILD.
Methods:
A total of 177 patients with SSc were enrolled in this study, including 116 patients with SSc-ILD and 61 without ILD. Multivariate logistic regression was performed to identify independently associated factors for SSc-ILD. The identification efficiency of individual and combined biomarkers was assessed using receiver operating characteristic curves, with the DeLong test applied to compare differences in area under the curve.
Results:
The incidence of dcSSc, Raynaud's phenomenon, and digestive system involvement was significantly higher in the SSc-ILD group. Four stepwise models were constructed, and the results of the full-factor model indicated that elevated NLR (neutrophil to lymphocyte ratio), prolonged PT (prothrombin time), and anti-SCL-70 antibody positivity were independent associated factors for SSc-ILD. The combined model of NLR, PT, and anti-SCL-70 yielded an AUC of 0.879 (95% CI: 0.828-0.930), which was significantly greater than any individual marker (P < 0.001), with a sensitivity of 82.6% and a specificity of 85.0%.
Conclusion:
NLR, PT, and anti-SCL-70 antibody together form a triad of independent associated factors for SSc-ILD, demonstrating substantial discriminatory potential when considered as a composite indicator.
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