Japanese Primary Prevention of Atherosclerosis With Aspirin for Diabetes (JPAD) Trial

This study has been completed.
Information provided by:
Kumamoto University
ClinicalTrials.gov Identifier:
First received: May 9, 2005
Last updated: September 22, 2008
Last verified: August 2008
The purpose of this study is to determine the effects of low-dose aspirin for the primary prevention of vascular events in patients with type 2 diabetes in Japan.

Condition Intervention Phase
Coronary Disease
Diabetes Mellitus, Type 2
Drug: Aspirin
Drug: No aspirin
Phase 4

Study Type: Interventional
Study Design: Allocation: Randomized
Endpoint Classification: Safety/Efficacy Study
Intervention Model: Parallel Assignment
Masking: Double Blind (Investigator, Outcomes Assessor)
Primary Purpose: Prevention
Official Title: Japanese Primary Prevention of Atherosclerosis With Aspirin for Diabetes (JPAD) Trial

Resource links provided by NLM:

Further study details as provided by Kumamoto University:

Primary Outcome Measures:
  • Cardiovascular events [ Time Frame: five years (median) ] [ Designated as safety issue: No ]
  • Cerebral vascular events [ Time Frame: five years (median) ] [ Designated as safety issue: No ]
  • Aortic and peripheral vascular events, which needs internal medicine and/or surgical medical treatment [ Time Frame: five years (median) ] [ Designated as safety issue: No ]

Enrollment: 2539
Study Start Date: December 2002
Study Completion Date: July 2008
Primary Completion Date: May 2008 (Final data collection date for primary outcome measure)
Arms Assigned Interventions
Active Comparator: 1
Aspirin use
Drug: Aspirin
Aspirin 81 mg or 100 mg per day
Active Comparator: 2
No aspirin use
Drug: No aspirin
No aspirin use

Detailed Description:

There is a worldwide epidemic of diabetes and the number of individuals with diabetes is set to increase further. As individuals with diabetes are at high risk of accelerated atherosclerosis and thrombotic vascular events, the significant proportion of the cardiovascular disease burden is projected to be among this population. JPAD is a multicenter study with a prospective randomized open, blinded end-point (PROBE) design. The doses administered are aspirin 81 mg/day or 100 mg/day, the latter being enteric-coated Aspirin.

The primary objective was to compare the effect of aspirin on atherosclerotic events including cardiovascular events, cerebral vascular event, and other vascular events.

We also analyze hemorrhagic events in this RCT.


Ages Eligible for Study:   30 Years to 85 Years
Genders Eligible for Study:   Both
Accepts Healthy Volunteers:   No

Inclusion Criteria:

  • Patients have type 2 diabetes mellitus (30 or more years old and 85 years old or less).
  • Patients give their informed consent to participate.

Exclusion Criteria:

  • Patient has electrocardiographic changes, including ischemic ST-segment depression, ST-segment elevation, or pathologic Q waves.
  • Patient has fixed ischemic heart disease, utilizing coronary angiography.
  • Patient has cerebral vascular disease, including cerebral infarction, past hemorrhage, and experience of transient ischemic attack.
  • Patient has arteriosclerotic disease, which needs internal medicine and/or surgical medical treatment.
  • Patient has already taken the following anti-platelet or anti-thrombotic medicine: aspirin, ticlopidine, cilostazol, dipyridamole, trapidil, warfarin, and argatroban.
  • Patient has severe gastric and/or duodenal ulcer.
  • Patient has severe liver dysfunction.
  • Patient has severe renal dysfunction.
  • Patient has allergy for aspirin.
  • Patient has atrial fibrillation.
  • Pregnancy or the possible case of pregnancy.
  Contacts and Locations
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Please refer to this study by its ClinicalTrials.gov identifier: NCT00110448

First Department of Internal Medicine, Nara Medical University
Kashihara, Nara, Japan, 634-8522
Department of Cardiovascular Medicine, Graduate School of Medical Sciences, Kumamoto University
Kumamoto, Japan, 860-8556
Sponsors and Collaborators
Kumamoto University
Principal Investigator: Hisao Ogawa, MD Professor of Medicine, Department of Cardiovascular Medicine, Graduate School of Medical Sciences, Kumamoto University
Principal Investigator: Yoshihiko Saito, MD Professor of Medicine, First Department of Internal Medicine, Nara Medical University
  More Information

Publications automatically indexed to this study by ClinicalTrials.gov Identifier (NCT Number):
Responsible Party: Hisao Ogawa, Kumamoto University
ClinicalTrials.gov Identifier: NCT00110448     History of Changes
Other Study ID Numbers: H14-Kouka(Seikatsu)-025 
Study First Received: May 9, 2005
Last Updated: September 22, 2008
Health Authority: Japan: Ministry of Health, Labor and Welfare

Keywords provided by Kumamoto University:
type 2 diabetes
coronary heart diseases
primary prevention

Additional relevant MeSH terms:
Coronary Artery Disease
Coronary Disease
Diabetes Mellitus, Type 2
Arterial Occlusive Diseases
Cardiovascular Diseases
Diabetes Mellitus
Endocrine System Diseases
Glucose Metabolism Disorders
Heart Diseases
Metabolic Diseases
Myocardial Ischemia
Vascular Diseases
Analgesics, Non-Narcotic
Anti-Inflammatory Agents
Anti-Inflammatory Agents, Non-Steroidal
Antirheumatic Agents
Cyclooxygenase Inhibitors
Enzyme Inhibitors
Fibrin Modulating Agents
Fibrinolytic Agents
Molecular Mechanisms of Pharmacological Action
Peripheral Nervous System Agents
Physiological Effects of Drugs
Platelet Aggregation Inhibitors
Sensory System Agents

ClinicalTrials.gov processed this record on May 26, 2016