Clopidogrel for the Prevention of Exacerbations in Severe COPD (CLOPEX)

Lady Reading Hospital, Pakistan

Status and phase: Enrolling; Phase 3

Conditions: COPD Exacerbation Acute; COPD

Treatments: Drug: Clopidogrel Bisulfate 75Mg Tab

Study type: Interventional

Funder types: Other

Identifiers

NCT06021990

804/LRH/MTI

Details and patient eligibility

About

Chronic Obstructive Pulmonary Disease (COPD) is a debilitating respiratory disorder characterized by gradual and progressive airflow limitation. It has been hypothesized that clopidogrel may have a role in reducing the exacerbation of COPD by reducing thromboembolic events. Several observational studies have found that taking clopidogrel reduces the likelihood of COPD exacerbations in patients with the disease. The study being conducted will be a randomized control trial, from March 2023 to March 2024 in the department of pulmonology, LRH. The aim of the study is to determine the role of clopidogrel in reducing the frequency of exacerbation in COPD patients compared to controls. The sampling will be done by non-probability consecutive sampling and the patients will be randomly allocated in study and control groups. Both the groups will be followed at the 3rd, 6th, and 12th months of the treatment and will be compared for the outcomes.

Full description

Chronic Obstructive Pulmonary Disease (COPD) is a debilitating respiratory disorder characterized by gradual and progressive airflow limitation. It is a huge worldwide health issue as well as a major cause of morbidity and mortality. Currently, it is the third leading cause of death. Exacerbations, or abrupt worsening of symptoms that necessitate medical treatment, are common in people with severe COPD. Exacerbations negatively influence patients' quality of life and are linked to higher healthcare utilization and mortality.

Clopidogrel is a widely used antiplatelet medication that works by inhibiting platelet aggregation by blocking the P2Y12 receptor. Clopidogrel's potential benefits in the treatment of COPD have piqued the curiosity of researchers in recent years. According to the hypothesis, Clopidogrel may lower the incidence of exacerbations by reducing thromboembolic events, which are prevalent causes of exacerbations in COPD.

Several observational studies have found that taking clopidogrel reduces the likelihood of COPD exacerbations in patients with the disease. A meta-analysis on the reduction of all-cause mortality in COPD patients concluded that mortality might be significantly lower in COPD patients receiving antiplatelet treatment. However, because of confounding considerations, the findings of these observational studies should be regarded with caution. To confirm the potential benefits of clopidogrel in lowering COPD exacerbations, randomized controlled studies (RCTs) are required. Only a few RCTs have been undertaken to date, with inconsistent outcomes.

The inconsistent findings of the RCTs show the need for additional studies to determine the role of clopidogrel in reducing COPD exacerbations. Larger, well-designed RCTs are required to offer more firm information on the possible benefits and dangers of clopidogrel in this patient population. The RCTs should also consider clopidogrel's potential side effects, such as bleeding, which may be especially concerning in COPD patients who are frequently on numerous drugs and may have comorbidities such as cardiovascular disease.

Finally, the role of clopidogrel in lowering exacerbations in patients with severe COPD remains unknown. Observational studies suggest that clopidogrel may have some benefits, while RCT results are mixed. More research is needed to determine clopidogrel's safety and efficacy in this patient population.

The results of the study if successful, will have two impacts. First, it will help reduce the financial burden on our healthcare system. Second, it will improve patients' quality of life by less frequent hospital visits with lowered mortality.

Enrollment: 162 estimated patients

Sex: All

Ages: 40 to 80 years old

Volunteers: No Healthy Volunteers

Inclusion criteria

• Patients diagnosed with severe COPD (GOLD stage III or IV based on FEV1)
• Patients with a history of at least one exacerbation in the past year.
• Patients who are able to understand and provide informed consent.
• Patients willing and able to comply with the study protocol and attend follow-up visits.
• Patients who are between the ages of 40 and 80 years.
• Either gender

Exclusion criteria

• Patients who have previously experienced serious medical issues, like a recent heart attack or stroke (within six months),
• Patients who are known to be hypersensitive to clopidogrel.
• People who have a history of gastrointestinal bleeding or any other health issue that could make them more likely to bleed.
• Women who are pregnant or nursing.
• Patients who are being treated with additional antiplatelet or anticoagulant medications.
• Patients who are being treated with clopidogrel for any other indication.
• People who suffer from severe renal or liver illness.

Trial design

Primary purpose: Treatment

Allocation: Randomized

Interventional model: Parallel Assignment

Masking: None (Open label)

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162 participants in 2 patient groups

Clopidogrel group

Experimental group

Description:

The clopidogrel group will receive the intervention under study (clopidogrel 75mg once daily post-meal) for the study period along with the standard of care treatment as approved by the hospital based on national and international guidelines.

Treatment:

Drug: Clopidogrel Bisulfate 75Mg Tab

Standard of Care

No Intervention group

Description:

The standard of care will receive treatment as approved by the hospital based on national and international guidelines.