S.I.F.A. II: Prevention Of Thromboembolic Events In Patients With Nonrheumatic Atrial Fibrillation (SIFA)

This study has been completed.
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ClinicalTrials.gov Identifier:
First received: October 24, 2005
Last updated: October 29, 2009
Last verified: October 2009

Evaluate efficacy and safety of Indobufen v. Aspirin in preventing thromboembolic events in patients at high risk of CV events such as patients suffering from nonrheumatic atrial fibrillation.

Condition Intervention Phase
Atrial Fibrillation
Drug: indobufen
Drug: aspirin
Phase 3

Study Type: Interventional
Study Design: Allocation: Randomized
Endpoint Classification: Safety/Efficacy Study
Intervention Model: Parallel Assignment
Masking: Double Blind (Subject, Investigator, Outcomes Assessor)
Primary Purpose: Prevention
Official Title: II Italian Study on Atrial Fibrillation (S.I.F.A. II): Prevention of Thromboembolic Events in Patients With Non Valvular Atrial Fibrillation.

Resource links provided by NLM:

Further study details as provided by Pfizer:

Primary Outcome Measures:
  • combined endpoints: cerebral ictus (ischemic or haemorragic), cardiovascular death, nonfatal acute myocardial infarction (AMI) or peripheral embolism. The first event occurring during the study will be considered. [ Time Frame: 3.5 years ] [ Designated as safety issue: No ]

Secondary Outcome Measures:
  • Global mortality, ischemic ictus, disabling ictus, TIA, nonfatal acute myocardial infarction, fatal and nonfatal hemorrhagic events, fatal and nonfatal embolisms. [ Time Frame: 3.5 years ] [ Designated as safety issue: No ]

Enrollment: 1372
Study Start Date: December 2000
Study Completion Date: April 2008
Primary Completion Date: April 2008 (Final data collection date for primary outcome measure)
Arms Assigned Interventions
Experimental: 1 Drug: indobufen
Indobufen capsules 100 and 200mg
Active Comparator: 2 Drug: aspirin
Acetylsalicylic acid capsules 300mg


Ages Eligible for Study:   18 Years and older
Genders Eligible for Study:   Both
Accepts Healthy Volunteers:   No

Inclusion Criteria:

  • Chronic or paroxysmal non rheumatic atrial fibrillation with cardioembolic risk factors: hypertension, ischemic cardiopathy, Congestive Heart Failure, diabetes mellitus

Exclusion Criteria:

  • Clinically relevant organ disease
  • creatinine clearance < 30 ml/min
  • gastric or duodenal ulcer
  • severe anaemia or poliglobulia
  Contacts and Locations
Choosing to participate in a study is an important personal decision. Talk with your doctor and family members or friends about deciding to join a study. To learn more about this study, you or your doctor may contact the study research staff using the Contacts provided below. For general information, see Learn About Clinical Studies.

Please refer to this study by its ClinicalTrials.gov identifier: NCT00244426

  Show 132 Study Locations
Sponsors and Collaborators
Study Director: Pfizer CT.gov Call Center Pfizer
  More Information

Additional Information:
No publications provided

Responsible Party: Director, Clinical Trial Disclosure Group, Pfizer
ClinicalTrials.gov Identifier: NCT00244426     History of Changes
Other Study ID Numbers: 293-CVD-9010-004, A7651004
Study First Received: October 24, 2005
Last Updated: October 29, 2009
Health Authority: Italy: The Italian Medicines Agency

Keywords provided by Pfizer:
Prevention of thromboembolic events in patients with non valvular atrial fibrillation

Additional relevant MeSH terms:
Atrial Fibrillation
Arrhythmias, Cardiac
Cardiovascular Diseases
Embolism and Thrombosis
Heart Diseases
Pathologic Processes
Vascular Diseases

ClinicalTrials.gov processed this record on March 31, 2015