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Hydroxychloroquine for Thrombosis Prevention and Antiphospholipid Antibody Reduction in Primary Antiphospholipid Syndrome

Antiphospholipid Syndrome Clinical Trial

Official title:
Effect of Hydroxychloroquine on Thrombosis Prevention and Antiphospholipid Antibody Levels in Patients With Primary Antiphospholipid Syndrome: An Pilot Randomized Prospective Study.

Clinical Trial Summary

This is an interventional drug study designed as a pilot for a randomized clinical trial, aimed at assessing the effect of hydroxychloroquine on the incidence rate of thrombosis in patients with primary antiphospholipid syndrome as the main outcome, as well as the safety of hydroxychloroquine administration in this population. In addition, the effect of hydroxychloroquine on antiphospholipid antibody titers will be assessed.

Clinical Trial Description

Patients with primary antiphospholipid syndrome (either thrombotic or obstetric) on regular follow-up at our outpatient rheumatology department and being treated with standard care (systemic anticoagulants and/or antiplatelet agents), are randomized to receive either hydroxychloroquine plus standard care, or standard care alone, on a 1:1 ratio using block size 2 randomization, after exclusion of patients with contraindications to hydroxychloroquine or prior hydroxychloroquine use within 12 months of consideration for enrollment. Patients are monitored clinically every 3 months and the development of thrombosis and/or adverse effects attributable to hydroxychloroquine is recorded. Antiphospholipid antibody titers (anti-cardiolipin immunoglobulin G (IgG)/Immunoglobulin M (IgM) and anti-beta2-glycoprotein I IgG/IgM isotypes) are measured semi-annually. Intention-to-treat survival analysis is applied for assessing the effect of hydroxychloroquine on the incidence of thrombosis. Longitudinal mixed linear models are applied for assessing the effect of hydroxychloroquine on longitudinal titers of antiphospholipid antibodies. ;

Study Design

Related Conditions & MeSH terms

Clinical Trial Details
NCT number NCT04153201
Study type Interventional
Source National and Kapodistrian University of Athens
Contact
Status Completed
Phase N/A
Start date January 15, 2013
Completion date October 16, 2019
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