Abstract
Objective
To determine the prevalence, clinical features, risk factors, and prognosis of interstitial lung disease (ILD) in patients with primary Sjogren's syndrome (pSS).
Methods
Data from 274 pSS patients from August 2013 to August 2022 were reviewed. The clinical features of pSS with ILD were revealed. Logistic regression was used to determine risk factors for ILD in pSS patients. Survival analysis and Cox regression were used to analyse the prognosis and prognostic factors of pSS patients.
Results
In pSS patients, the prevalence of ILD was 22.3% (61/274). The pSS patients with ILD were characterized by a late onset and long disease course, with a nonspecific interstitial pneumonia (NSIP) pattern as the predominant high-resolution computed tomography (HRCT) finding. Logistic regression results indicated that an age over 50 years old (OR 4.786, 95% CI 1.602–14.299; P = 0.005), purpuric rash (OR 4.695, 95% CI 1.537–14.339; P = 0.007), AMA-M2 antibody positivity (OR 2.582, 95% CI 1.166–5.722; P = 0.019), and diabetes (OR 2.514, 95% CI 1.025–6.167; P = 0.044) were risk factors for ILD in pSS patients. Cox regression results showed that advanced age (HR 1.240, 95% CI 1.088–1.413; P = 0.001) and cancer history (HR 8.411, 95% CI 1.771–39.934; P = 0.007) were risk factors for pSS patient survival.
Conclusion
This study showed that pSS patients with ILD tended to have a late onset and long course of pSS. An age over 50 years, purpuric rash, AMA-M2 antibody positivity, and diabetes were risk factors for ILD in pSS patients. Advanced age and cancer history were prognostic factors in pSS patients.
Key Points • This study showed that pSS patients with ILD tended to have a late-onset and lengthy course of pSS, with the NSIP pattern as the predominant lung image. • The risk factors for ILD in pSS patients determined in this study were an age over 50 years, purpuric rash, AMA-M2 antibody positivity, and diabetes. • The prognostic risk factors for pSS patients were advanced age and cancer history. |
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Data availability
All data generated or analysed during this study are included in this published article.
Abbreviations
- ILD:
-
Interstitial lung disease
- pSS:
-
Primary Sjogren's syndrome
- pSS-ILD:
-
Primary Sjögren’s syndrome-associated interstitial lung disease
- pSS-nonILD:
-
Primary Sjögren’s syndrome without interstitial lung disease
- CTD:
-
Connective tissue disease
- HRCT:
-
High-resolution computed tomography
- NSIP:
-
Nonspecific interstitial pneumonia
- UIP:
-
Usual interstitial pneumonia
- OP:
-
Organizing pneumonia
- LIP:
-
Lymphocytic interstitial
- ESR:
-
Erythrocyte sedimentation rate
- CRP:
-
C-reactive protein
- IgG:
-
Immunoglobulin G
- WBC:
-
White blood cell count
- PLT:
-
Platelet count
- ESSDAI:
-
EULAR primary Sjögren syndrome Disease Activity Index
- PFT:
-
Pulmonary function test
- FVC%:
-
Forced vital capacity percent predicted
- Dlco%:
-
Diffusion capacity CO percent predicted
- ANA:
-
Anti-nuclear antibody
- Anti-SSA :
-
Anti-Sjogren's syndrome A
- Anti-SSB:
-
Anti-Sjogren's syndrome B
- AMA-M2:
-
Anti-mitochondrial M2
- Anti-RNP:
-
Anti-ribonucleoprotein
- GERD:
-
Gastroesophageal reflux disease
- COPD:
-
Chronic obstructive pulmonary disease
- AIH:
-
Autoimmune hepatitis
- PBC:
-
Primary biliary cirrhosis
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Funding
This research was supported by the Natural Science Foundation of Zhejiang Province, China (Y21H270014), the TCM Science and Technology Program of Zhejiang Province, China (2020ZZ006), and the Scientific Research Project of Zhejiang Provincial Education Department, China (Y202146162).
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Y.H, Y.Q., and Z.X. designed this study. M.G. was involved in the case collection, data analysis, and patient follow-up. Y.H. and Y.Q. finished the article writing. F.Z., Y.Z., and Z.X. revised the manuscript. W.C., X.W., and J.S. supervised this study and reviewed the article, contributing equally to this work as co-correspondence authors. All authors approved the submission of the final version of the manuscript.
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Huang, Y., Qiu, Y., Xie, Z. et al. Risk factors and prognosis of interstitial lung disease for primary Sjögren syndrome patients: A retrospective case‒control study. Clin Rheumatol 42, 3033–3041 (2023). https://doi.org/10.1007/s10067-023-06596-7
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DOI: https://doi.org/10.1007/s10067-023-06596-7