Effect of Metformin on Carotid Atherosclerosis for Non-diabetic Patients With PsA (CAMPA Study) (NCT05988684) | Clinical Trial Compass
CompletedPhase 4
Effect of Metformin on Carotid Atherosclerosis for Non-diabetic Patients With PsA (CAMPA Study)
Hong Kong24 participantsStarted 2023-08-30
Plain-language summary
Background: Psoriatic arthritis (PsA) is a common chronic inflammatory disease with a prevalence up to 670 every 100,000 subjects. Patients with PsA has an increased risk of cardiovascular disease (CVD) which is one of the major causes of death. The investigators hypothesize that metformin in combination of a treat-to-target (T2T) strategy aiming at tight disease control is more effective in preventing progression of subclinical arthrosclerosis than T2T strategy alone in non-diabetic PsA patients.
Objective: To investigate the vascular effects of metformin in PsA patients without diabetes mellitus. The metabolic and anti-inflammatory roles of metformin will also be explored.
Study design: This is a 1-year, single-centered, pilot, open-labelled, randomized controlled trial. A total of 24 enrolled patients with PsA being followed at the Prince of Wales Hospital rheumatology clinics will be recruited and randomized to either metformin group or control group in a 1:1 ratio. Participants randomized to the metformin group will be instructed to take 500 mg metformin daily for 1 week before titrating up to twice a day (one with the morning meal, one with the evening meal) to reduce gastro-intestinal adverse events.
Expected outcomes: The data from this study will support that there will be significant difference in the proportion of subjects with carotid plaque progression between the metformin group and control group over a period of 1 year.
Who can participate
Age range
18 Years
Sex
ALL
See this in plain English?
AI-rewrites the medical criteria so a patient or caregiver can understand them. Always confirm with the trial site.
Inclusion criteria
. fulfill the ClASsification criteria for Psoriatic ARthritis (CASPAR),
. are over 18 years old,
. have a Framingham Risk Score ≥ 10% (i.e. moderate to high CV risk) and
. have carotid plague on previous ultrasound.
Exclusion criteria
. have prior therapy with metformin during the last 6 months;
. have pre-existing diabetes as defined by the World Health Organization (WHO) criteria:
Questions worth asking your doctor
Bring these to your next appointment. They're a starting point for a shared conversation — not a sign you qualify or a recommendation to enrol.
1Based on my diagnosis and history, is this trial worth exploring for me — or is there a standard treatment we should try first?
2What does this trial's phase tell us about how much is already known about its safety and benefit?
3What would taking part actually involve for me — visits, tests, time, and travel?
4What are the known and possible risks or side effects I should weigh, and how would they be monitored?
5If this trial isn't the right fit, what other options or trials would you suggest I look into?
Generated to help you prepare — always confirm anything about your own eligibility and care with the study team and your doctor.
Questions for the trial coordinator
The trial coordinator is the person who runs the study day to day. These cover the practical side — logistics, costs, and what taking part would actually mean for your life. The study team confirms whether you meet the criteria; these are questions to ask, not a sign you qualify.
1What does taking part actually involve week to week — how many visits, where, and how long does each one take?
2What costs are covered by the study, and what might I have to pay for myself, including travel, parking, or time off work?
3What happens during screening, and what happens if the study team confirms I don't meet the criteria after those tests?
4Who pays for the scans, blood work, and other tests the trial requires — the study, my insurance, or me?
5How will being in the trial affect my regular care, and will my own doctor stay informed and involved?
6Can I leave the trial at any point if I change my mind, and what would happen to my care if I do?
A starting point for the conversation — always confirm anything about your own eligibility, costs, and care with the study team and your doctor.
What they're measuring
1
Difference in the proportion of subjects with carotid plaque progression between the metformin group and control group