Recruiting
Phase 1

Enteric-coated Aspirin

Sponsor:

Montreal Heart Institute

Code:

NCT05702463

Conditions

Platelet Aggregation

Type 2 Diabetes

Aspirin

Diabetes Mellitus, Type 2

Platelet Aggregation Inhibitors

Eligibility Criteria

Sex: All

Age: 18+

Healthy Volunteers: Not accepted

Interventions

Aspirin 81Mg Ec Tab twice daily for 7 days

Aspirin 40Mg Chew Tab twice daily for 7 days

Aspirin 162 mg EC Tab once daily for 7 days

Study Details

Brief summary:

This phase 2 study will include patients suffering from type 2 diabetes mellitus and will first study their response to enteric coated aspirin at a dose of 80 mg per day for a 7-day period. Participants with an incomplete platelet inhibition after exposure to EC aspirin at doses of 80 mg once daily will be randomized to a random order of 3 different ASA regimens: EC ASA 162 mg once daily, EC ASA 81 mg twice daily and chewable ASA 40 mg twice daily. The aims are to determine the feasibility of a larger scale trial, and to determine the regimen associated with the lowest proportion of non-responders after randomization. Platelet function will be assessed at baseline and at day 7 of each arms of the study.

Conditions

Platelet Aggregation

Type 2 Diabetes

Aspirin

Diabetes Mellitus, Type 2

Platelet Aggregation Inhibitors

Study ID

NCT05702463

Start date

Jun 13, 2023

Status verified date

Dec, 2025

Completion date

Jul 1, 2027

Anticipated

Primary completion date

Jun 1, 2027

Anticipated

Eligibility Criteria

Eligibility Criteria

Sex: All

Age: 18+

Healthy Volunteers: Not accepted

Inclusion Criteria:

1. Age ≥ 18 years;
2. Participant must be naïve to ASA, defined as absence of chronic treatment with ASA within the previous 3 months, and of any ASA use within the previous 2 weeks;
3. Type 2 diabetes, based on at least one of the following criteria: (5)

  • Chronic treatment with oral antihyperglycemic agents or insulin therapy;
  • Fasting Plasma Glucose (FPG) ≥ 126 mg/dL (7.0 mmol/L) (fasting is defined as no caloric intake for at least 8h);
  • 2-h Plasma Glucose (2h-PG) ≥ 200 mg/dL (11.1 mmol/L) during the oral glucose tolerance test (OGTT);
  • A1C ≥ 6.5% (48 mmol/ml);
4. Willing to attend all study visits of both the run-in and randomized phases of the trial.

Exclusion Criteria:

1. Definitive indication for ASA, including any evidence of clinical atherosclerotic disease, previous or current;
2. Known hypersensitivity to ASA;
3. Patient requiring dialysis;
4. Severe hepatic insufficiency or ALT > 3 x ULN;
5. High-risk GI bleeding features, such as known H. pylori infection, past or present ulcer, history of bleeding from the GI tract;
6. Bleeding diathesis;
7. Platelet count or hemoglobin levels outside of the normal reference range;
8. Planned major surgical procedure or dental procedure during the course of the study;
9. Chronic inflammatory disease requiring regular anti-inflammatory treatment;
10. Chronic treatment with an oral anticoagulant, an antiplatelet agent, NSAIDs or systemic steroids;
11. Active cancer;
12. History of hematological malignancy or myelodysplasia;
13. Pregnant or lactating women;

Study Design

Enrollment

30 participants

Anticipated

Allocation

Randomized

Intervention Model

Crossover

Primary purpose

Prevention

Interventions and Outcome Measures

Arms

experimental: EC ASA 162 mg once daily for 7 days

EC ASA 162 mg once daily for 7 days

experimental: EC ASA 81 mg twice daily for 7 days

EC ASA 81 mg twice daily for 7 days

experimental: chewable ASA 40 mg twice daily for 7 days

chewable ASA 40 mg twice daily for 7 days

Interventions

Aspirin 81Mg Ec Tab twice daily for 7 days

Participants with incomplete platelet aggregation will be instructed to take EC ASA 81 mg twice daily for 7 days.

Aspirin 40Mg Chew Tab twice daily for 7 days

Participants with incomplete platelet aggregation will be instructed to take chewable ASA 40 mg twice daily for 7 days.

Aspirin 162 mg EC Tab once daily for 7 days

Participants with incomplete platelet aggregation will be instructed to take EC ASA 162 mg once daily for 7 days.

Primary outcome measure

  • Describe the screening rate to evaluate the feasibility of a larger scale randomized controlled trial. [ Time Frame: 1 year ]
  • Describe the enrollment rate by the proportion of referred participants who are eligible to evaluate the feasibility of a larger scale randomized controlled trial. [ Time Frame: 1 year ]
  • Describe the enrollment rate by the proportion of eligible participants who consent to evaluate the feasibility of a larger scale randomized controlled trial. [ Time Frame: 1 year ]
  • Describe the retention rate to evaluate the feasibility of a larger scale randomized controlled trial. [ Time Frame: 1 year ]
  • Among initial ASA non-responder participants, define the proportion of participants that remain ASA non-responders with different formulations and dosing regimens of ASA. [ Time Frame: 1 year ]

Central Contacts and Locations

Central contacts

Marie Lordkipanidzé B. Pharm, Ph.D.

514-376-3330marie.lordkipanidze@umontreal.ca

Locations

Montreal Heart Institute

Recruiting

Montreal, Quebec, Canada, H1T 1C8

More Information

Sponsor

Montreal Heart Institute

Last update posted

Dec 3, 2025

Last verified

Dec, 2025

Keywords

  • diabetes
  • aspirin
  • Acetylsalicylic acid
  • Pharmacodynamics

Trial information was received from ClinicalTrials.gov and was last updated on 2026-09-10. This information was provided to ClinicalTrials.gov by Montreal Heart Institute on 2025-12-03.