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Published on: January 17, 2018
Significance of persistent antiphospholipid antibodies in the elderly
Thomas Quéméneur1, Marc Lambert, Eric Hachulla
1Department of Internal Medicine, Huriez Hospital, CHRU Lille, and University of Lille II, Lille, France.
Insights
Persistent antiphospholipid antibodies (aPL) are challenging to interpret in older adults. Lupus anticoagulant (LAC) may be the most significant biomarker for diagnosing antiphospholipid syndrome (APS) in the elderly population.
Area of Science:
- Rheumatology
- Immunology
- Geriatrics
Background:
- Anticardiolipin antibodies (aCL) and vascular diseases are more prevalent in the elderly.
- The clinical significance of aCL in older individuals is not well-defined.
Purpose of the Study:
- To determine the significance of persistent antiphospholipid antibodies (aPL) in elderly patients.
- To evaluate the diagnostic utility of aCL and lupus anticoagulant (LAC) in elderly patients with suspected antiphospholipid syndrome (APS).
Main Methods:
- Retrospective analysis of 327 patients with at least two positive aPL tests (LAC and/or aCL).
- Patients were categorized into young (<65 years) and elderly (>=65 years) groups.
- Comparison of APS prevalence and clinical characteristics between age groups.
Main Results:
- Antiphospholipid syndrome (APS) was less frequent in elderly patients (23.4%) compared to younger patients (40.8%).
- Clinical features of persistent aPL were similar across age groups.
- Lupus anticoagulant (LAC) was highly prevalent in elderly APS patients (93.3%) and differentiated APS from non-APS cases in this population.
Conclusions:
- Interpreting positive aPL tests in the elderly is complex.
- Persistent lupus anticoagulant (LAC) appears to be a valuable biomarker for diagnosing APS in older adults.
Objective:
The prevalence of anticardiolipin antibodies (aCL) and of vascular diseases increases with age, and aCL may be associated with various diseases in the elderly. So the significance of aCL in the elderly remains difficult to determine. We sought to determine the significance of persistent antiphospholipid antibodies (aPL) in the elderly.
Methods:
We retrospectively analyzed the files of 327 patients [149 patients with antiphospholipid syndrome (APS); 64 patients age >or= 65 yrs] with 2 positive aPL [lupus anticoagulant (LAC) and/or aCL].
Results:
The frequency of APS was 40.8% (n = 134) in our 263 young patients (< 65 yrs) and 23.4% (n = 15) in our 64 elderly patients (>or= 65 yrs). The clinical characteristics of patients with persistent aPL were the same in those under and over 65 years. LAC was positive in all but one elderly patient with APS, and occurred in this group more frequently than in the young patients (93.3% vs 44.6%; p < 0.006). The presence of LAC allowed to discriminate APS patients in our elderly population (93.3% in APS vs 48.9% in non-APS patients; p < 0.009).
Conclusion:
Interpretation of a positive determination of APL is difficult in the elderly; persistent LAC may be the most valuable biological marker of APS in the elderly.
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