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Minor2 versionsRe-verified since Aug 16, 2011, no change to tracked fieldsv13-v14
NotableLead sponsor: Office of Rare Diseases (ORD) to Duke UniversityPrimary and study completion dates: Jul 2009 to Jul 2015 · Study sites: 8 to 1 · Eligibility criteria shortened, about 81 words · 2 morev12Show all 6 changesShow less
Primary and study completion dates: Jul 2009 to Jul 2015
NotablePrimary and study completion dates: Dec 2008 to Jul 2009Study sites: 5 to 8v8Show all 2 changesShow less
Study sites: 5 to 8
MinorSite details revised at 1 of 5 sitesv7
MinorPrimary and study completion dates: Dec 2008v6
MinorSite details revised at 1 of 5 sitesv5
MinorStudy Status, Sponsor/Collaborators, Study Design, Arms and Interventions, Eligibilityv4
MinorRe-verified, no change to tracked fieldsv3
NotableTrial status: Not Yet Recruiting to RecruitingSite details revised at 5 of 5 sitesv2Show all 2 changesShow less
Site details revised at 5 of 5 sites
MinorStudy First Submitted
Stopped: an ongoing trial was terminated, suspended or withdrawn.
Notable: the trial’s plan changed such as a big move in its timeline or size, a new primary endpoint, sponsor or phase, or recruiting opened or resumed.
Minor: routine progress and housekeeping, such as sites added or enrollment closed.
Antiphospholipid antibody syndrome (APS) is characterized by the presence of antiphospholipid antibodies, which are proteins in the blood that interfere with the body's ability to perform normal blood clotting. Clinical problems associated with antiphospholipid antibodies include an increased risk for the formation of blood clots in the lungs or deep veins of the legs, stroke, heart attack, and recurrent miscarriages. It is possible that some people with APS have a genetic predisposition for developing the syndrome. This study will use a genetic strategy to identify potential inherited risk factors for the development of APS by recruiting people with APS who have family members also affected by the syndrome or by another autoimmune disorder, such as lupus or rheumatoid arthritis.