The findings could lead to repurposing drugs for patients with the sometimes-fatal condition.
In patients with lupus, immune cells undergo an inflammatory transformation when migrating from the blood to the skin.
The inflammatory condition affects more than 1 million Americans.
Antiphospholipid syndrome is rare in adults and even less common among children.
The findings provide promise of targeted treatment for patients with the disease.
The finding brings researchers closer to finding the exact cause of inflammation and clotting in severe COVID-19 patients.