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Uncovering Risk Factors of Premature Mortality in Common Variable Immunodeficiency
Patrick Bez1, Bas Smits2, Christoph Geier1
1Division of Immunodeficiency, Department of Rheumatology and Clinical Immunology, Medical Center, Faculty of Medicine, University of Freiburg, Freiburg, Germany; Center for Chronic Immunodeficiency, Medical Center, Faculty of Medicine, University of Freiburg, Freiburg, Germany.
Insights
Patients with common variable immunodeficiency and immune dysregulation complications (CVIDc) face higher mortality. Severe enteropathy and hepatopathy, along with lymphopenia and elevated liver enzymes, may predict premature death in CVIDc patients.
Area of Science:
- Immunology
- Clinical Medicine
- Genetics
Background:
- Common variable immunodeficiency (CVID) patients with immune dysregulation complications (CVIDc) exhibit increased mortality compared to infection-only (CVIDio) cases.
- Identifying predictors of premature death in CVIDc is critical for improved patient outcomes.
Purpose of the Study:
- To analyze mortality patterns in a large tertiary referral center.
- To compare clinical and laboratory features of deceased CVIDc patients with matched living controls to identify premature death indicators.
Main Methods:
- Retrospective case-control study of CVID patients meeting European Society for Immunodeficiencies criteria.
- Cases were CVIDc patients who died before age 70; controls were matched for sex, age, and CVID phenotype.
Main Results:
- Confirmed poorer prognosis for CVIDc versus CVIDio (57 deaths in 497 patients).
- Infections and neoplasia were leading causes of death.
- Cases showed higher prevalence of severe enteropathy, hepatopathy, and neoplasia, with increased lymphopenia, thrombocytopenia, and liver enzyme elevation three years prior to death.
Conclusions:
- Severe enteropathy and hepatopathy are potential key factors associated with premature mortality in CVIDc.
- Further multicenter, prospective studies are needed to confirm these findings.
- Early evaluation of these factors may lead to improved treatment strategies for CVIDc.
Background:
Among patients with common variable immunodeficiency (CVID), patients with complications of immune dysregulation (CVIDc) have higher mortality rates than those with infection-only presentation (CVIDio). Therefore, identifying predictive markers of premature mortality among patients with CVIDc is crucial.
Objective:
The purpose of this retrospective exploratory study was to describe the mortality in a large tertiary referral center and compare the clinical and laboratory characteristics of patients with CVIDc who died prematurely with a group of matched living CVIDc control patients to identify potential indicators of premature death.
Methods:
The study included patients diagnosed with CVID according to European Society for Immunodeficiencies criteria and active follow-up. In a case-control analysis, we identified patients who died before the age of 70 years as cases and then randomly selected controls who were matched for sex, age, and CVID phenotype.
Results:
We were able to confirm the poor prognosis of CVIDc compared with CVIDio in 497 patients, including 57 who had died. The most common causes of death were infections and neoplasia. The exploratory case-control analysis of 37 cases and 73 controls suggests that cases had a higher prevalence of severe enteropathy, hepatopathy, and neoplasia than controls 3 years before death. This was associated with a higher frequency of lymphopenia, thrombocytopenia, and liver enzyme elevation.
Conclusions:
Hepatopathy and severe enteropathy need to be confirmed in a multicenter, prospective study as the most relevant factors associated with premature mortality in patients with CVIDc. Their early evaluation will hopefully allow for better and possibly more definitive treatment options.
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