Clinical Outcomes of Primary Versus Secondary Antiphospholipid Syndrome

January 29, 2025 updated by: Maha Mohammed Abdel-Aziz, Assiut University

Thrombotic Outcome of Primary Versus Secondary Antiphospholipid Syndrome

Observational retrospective cohort study to assess clinical outcomes in patients with primary versus secondary antiphospholipid syndrome

Study Overview

Status

Not yet recruiting

Conditions

Detailed Description

Antiphospholipid antibody syndrome is an autoimmune disorder associated with positive antiphospholipid antibodies including the lupus anticoagulant, anticardiolipin antibodies IgG or IgM, and/or anti-ß2-glycoprotein IgG or IgM associated with thrombotic problems and pregnancy loss.

Antiphospholipid syndrome is one of the most frequent forms of acquired thrombophilia and is associated with an increased risk of both venous and arterial thrombotic events. Thirty to 40% of systemic lupus erythematosus (SLE) patients have associated antiphospholipid syndrome.

Antiphospholipid syndrome has estimated incidence in the general population of 2.1 (1.4-2.8) per 100 000, and the prevalence of 50 (42-58) per 100 000. APS is more common in female with a female to male ratio is 3.5:1 for primary and 7:1 for secondary.

Antiphospholipid syndrome is divided into two types primary syndrome without an underlying disease, and secondary antiphospholipid syndrome that is associated with another autoimmune syndrome, most commonly Systemic Lupus Erythematosus (SLE).

Patients with APS are more at risk of recurrent thrombosis (3). n a retrospective analysis of 160 patients with APS, venous thromboembolism (VTE) was found to be the commonest manifestation (47.5%) followed by arterial thromboembolism (43.1%) then materno fetal problems which were found only in 9.7% of patients, and finally, catastrophic antiphospholipid syndrome (CAPS) represented in only 2.5 percent of the cases (4).

The clinical manifestations of antiphospholipid syndrome include haematological (thrombocytopenia, venous thrombosis), obstetrical (recurrent pregnancy loss), neurological (stroke, transient ischaemic attack, seizures), cardiovascular, dermatological such as livedo reticularis, skin ulceration and necrosis, renal (glomerulonephritis and renal thrombotic microangiopathy), and orthopedic (avascular necrosis of bones).

the manifestation spectrum ranged from asymptomatic antiphospholipid antibodies positivity, various non-criteria manifestations, obstetric morbidity, thrombosis, to life-threatening catastrophic antiphospholipid syndrome. The wide manifestation spectrum led to a heterogeneous entity and brought challenges to management of the syndrome.

The aim of this study was to compare primary versus secondary effects of antiphospholipid syndrome on the development of thrombosis and its outcomes.

Study Type

Observational

Enrollment (Estimated)

52

Contacts and Locations

This section provides the contact details for those conducting the study, and information on where this study is being conducted.

Study Contact

Study Contact Backup

Study Locations

  • Egypt
      • Assiut, Egypt, 71515
        • Maha Abdel-Aziz
        • Contact:
        • Contact:
        • Principal Investigator:
          • Maha Abdel-Aziz, MD

Participation Criteria

Researchers look for people who fit a certain description, called eligibility criteria. Some examples of these criteria are a person's general health condition or prior treatments.

Eligibility Criteria

Ages Eligible for Study

  • Adult

Accepts Healthy Volunteers

No

Sampling Method

Non-Probability Sample

Study Population

Retrospective cohort

Description

Inclusion Criteria:

  • All patients diagnosed as antiphospholipid syndrome in clinical hematology or rheumatology units in internal medicine department, Assiut university hospital.

Exclusion Criteria:

  • patients with other risk factor for thrombosis (malignancy, cocs, protein c or protein s deficiency etc

Study Plan

This section provides details of the study plan, including how the study is designed and what the study is measuring.

How is the study designed?

Design Details

Cohorts and Interventions

Group / Cohort
Retrospective to compare clinical outcomes of primary versus secondary antiphospholipi
Observational study to compare clinical outcomes of primary versus secondary antiphospholipid syndrome

What is the study measuring?

Primary Outcome Measures

Outcome Measure
Time Frame
to compare percentage of patients with primary versus secondary antiphospholipid syndrome in developing recurrent thrombosis
Time Frame: 12 months
12 months

Collaborators and Investigators

This is where you will find people and organizations involved with this study.

Sponsor

Assiut University

Publications and helpful links

The person responsible for entering information about the study voluntarily provides these publications. These may be about anything related to the study.

Helpful Links

Study record dates

These dates track the progress of study record and summary results submissions to ClinicalTrials.gov. Study records and reported results are reviewed by the National Library of Medicine (NLM) to make sure they meet specific quality control standards before being posted on the public website.

Study Major Dates

Study Start (Estimated)

February 7, 2025

Primary Completion (Estimated)

March 6, 2026

Study Completion (Estimated)

March 6, 2026

Study Registration Dates

First Submitted

January 12, 2025

First Submitted That Met QC Criteria

January 29, 2025

First Posted (Actual)

March 25, 2025

Study Record Updates

Last Update Posted (Actual)

March 25, 2025

Last Update Submitted That Met QC Criteria

January 29, 2025

Last Verified

January 1, 2025

More Information

Terms related to this study

Keywords

Additional Relevant MeSH Terms

Other Study ID Numbers

  • 04-2024-300543

Plan for Individual participant data (IPD)

Plan to Share Individual Participant Data (IPD)?

UNDECIDED

IPD Plan Description

Undecided yet

Drug and device information, study documents

Studies a U.S. FDA-regulated drug product

No

Studies a U.S. FDA-regulated device product

No

This information was retrieved directly from the website clinicaltrials.gov without any changes. If you have any requests to change, remove or update your study details, please contact register@clinicaltrials.gov. As soon as a change is implemented on clinicaltrials.gov, this will be updated automatically on our website as well.

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