Skip to content

International Registry of Thrombotic APS Patients Treated With Direct Oral Anticoagulants

OBServaToire INternational Des Patients AnTiphospholipidEs traités Par Anticoagulants Oraux Directs

Status
Recruiting
Phases
Unknown
Study type
Observational
Source
ClinicalTrials.gov
Registry ID
NCT04262492
Acronym
OBSTINATE
Enrollment
500
Registered
2020-02-10
Start date
2020-10-21
Completion date
2031-04-21
Last updated
2026-05-08

For informational purposes only — not medical advice. Sourced from public registries and may not reflect the latest updates. Terms

Conditions

Anticoagulants Causing Adverse Effects in Therapeutic Use, Antiphospholipid Syndrome, Thrombosis

Keywords

antiphospholipid syndrome, direct oral anticoagulants

Brief summary

This registry, currently being established will ensure consistency of data collection and provide safety information in non high-risk APS patients currently on DOACs.

Interventions

DRUGRivaroxaban

Rivaroxaban 10 mg or 15 mg or 20 mg OD Dabigatran 110 mg or 150 mg BID Apixaban 2.5 mg or 5 mg or 10 mg BID

Sponsors

Stéphane Zuily
Lead SponsorOTHER
International Society on Thrombosis and Haemostasis
CollaboratorUNKNOWN

Study design

Observational model
COHORT
Time perspective
PROSPECTIVE

Eligibility

Sex/Gender
ALL

Inclusion criteria

* Patient receiving a comprehensive information about the study, and not opposed to participate * Age ≥ 18 yo * Classification of definite APS according to revised Sapporo-Sydney criteria * Direct oral anticoagulant treatment prescribed during at least 6 months or with the possibility of follow-up of at least 6 months

Exclusion criteria

* Incomplete revised Sapporo-Sydney criteria * No data regarding the recurrent thrombosis * Pregnant woman * Age \< 18 yo

Design outcomes

Primary

MeasureTime frameDescription
Rate of Recurrent Thrombosis6 monthsRate of Recurrent Thrombosis either arterial, venous or microvascular confirmed by a relevant exam

Secondary

MeasureTime frameDescription
Rate of Bleeding6 monthsRate of Bleeding either severe or major or clinically relevant non-major bleeding according to ISTH classification
Rate of Non-Criteria Manifestations6 monthsRate of Non-Criteria Manifestations according to Sydney criteria
Adherence to treatment6 monthsRate of patients who have a good adherence to oral anticoagulants assessed by the Girerd questionnaire

Countries

France

Contacts

CONTACTVirginie Dufrost, MD, MSc
v.dufrost@chru-nancy.Fr+33383157828

Outcome results

None listed

Source: ClinicalTrials.gov · Data processed: May 9, 2026