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Anti-beta2-glycoprotein I antibodies and ischemic stroke in a 20-month-old boy
Eustathia Katsarou1, Achilleas Attilakos, Smaragdi Fessatou
1Department of Neurology, Panagiotis and Aglaïa Kyriakou Children's Hospital, Athens, 11527 Greece. pectasid@otenet.gr
Insights
This study reports the first case of childhood ischemic stroke linked solely to antibodies to beta2-glycoprotein I (anti-beta2GPI), even when standard antiphospholipid tests were negative. It highlights the importance of testing for anti-beta2GPI in children with suspected antiphospholipid syndrome.
Area of Science:
- Pediatric Neurology
- Immunology
- Vascular Medicine
Background:
- Antibodies to beta2-glycoprotein I (anti-beta2GPI) are linked to thrombosis and pregnancy issues.
- The prevalence of anti-beta2GPI in pediatric cerebral infarction is not well-established.
- Antiphospholipid syndrome (APS) is a significant cause of stroke in children.
Observation:
- A 20-month-old boy experienced an ischemic stroke.
- High immunoglobulin G anti-beta2GPI titers were detected.
- Standard antiphospholipid assays, including anticardiolipin antibodies and lupus anticoagulant tests, were negative.
- Other causes of cerebral infarction were ruled out.
Findings:
- This case represents the first documented instance of childhood ischemic stroke associated exclusively with anti-beta2GPI.
- The patient demonstrated persistently high anti-beta2GPI IgG levels over two years.
- Treatment with low-dose aspirin was initiated.
Implications:
- This case underscores the necessity of screening for anti-beta2GPI in pediatric patients with suspected APS, especially when conventional antiphospholipid antibody tests are negative.
- It supports broader diagnostic criteria for APS in children presenting with ischemic events.
- Early detection and management of anti-beta2GPI-associated conditions can potentially prevent recurrent thrombotic events in children.
Abstract:
Antibodies to beta2-glycoprotein I (anti-beta2GPI) have been associated with recurrent thrombosis and pregnancy morbidity. However, the prevalence of anti-beta2GPI in children suffering from cerebral infarction is unknown. We report on a 20-month-old boy who had an ischemic stroke, secondary to antiphospholipid syndrome with high titers of immunoglobulin G anti-beta2GPI (first titer: 132 U; second titer 6 weeks later: 350 U; normal range: 0-100 U). Anticardiolipin antibodies and lupus anticoagulant tests were negative. All other causes of infarction were excluded. Laboratory studies showed anti-beta2GPI IgG levels of 164 U and 216 U at 6 months and 2 years, respectively, after the onset. The patient received treatment with low-dose aspirin. To our knowledge, this is the first reported case of childhood ischemic stroke with only anti-beta2GPI but no antibodies detectable in standard antiphospholipid assays. This case supports the recommendation of others to search for these antibodies in the presence of strong clinical suspicion of antiphospholipid syndrome, when anticardiolipin antibodies and lupus anticoagulant tests are negative.
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Ischemic Stroke l: Introduction
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