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Mortality in systemic sclerosis: lessons learned from population-based and observational cohort studies
Mandana Nikpour1, Murray Baron
1aDepartment of Medicine and Rheumatology, University of Melbourne, St. Vincent's Hospital Melbourne, Victoria, Australia bDivision of Rheumatology, Jewish General Hospital, Montreal, Quebec, Canada.
Current Opinion in Rheumatology
|January 21, 2014
Summary
Systemic sclerosis (SSc) significantly increases mortality risk, primarily due to heart and lung complications. Understanding risk factors is crucial for improving survival in this autoimmune disease.
Area of Science:
- Rheumatology
- Immunology
- Cardiology
- Pulmonology
Background:
- Systemic sclerosis (SSc) is a rheumatic disease with exceptionally high mortality rates.
- Cardiopulmonary involvement is a leading cause of death in SSc patients.
- Reduced life expectancy is a significant concern for individuals with SSc.
Purpose of the Study:
- To appraise current knowledge on survival rates in systemic sclerosis.
- To identify primary causes of death in SSc patients.
- To determine risk factors associated with reduced life expectancy in SSc.
Main Methods:
- Systematic reviews of worldwide cohort studies were analyzed.
- Pooled standardized mortality ratios were calculated.
- Hazard ratios for mortality were assessed based on specific complications like PAH and ILD.
Main Results:
- SSc patients face a standardized mortality ratio of 3.5 compared to the general population.
- Mortality risk is significantly higher in SSc patients with pulmonary arterial hypertension (3.5) and interstitial lung disease (2.6).
- Average life expectancy for SSc patients is reduced by 16-34 years.
Conclusions:
- Systemic sclerosis is associated with substantially increased mortality, mainly from cardiopulmonary issues.
- Identifying mortality risk factors is key to improving outcomes for SSc patients.
- Further research aims to quantify mortality predictors and enhance survival through emerging therapies.
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