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The Asp-PSC Study

Evaluating Aspirin in PSC

Recruiting soon


Thinking of taking part?

  1. Check how suitable you are by looking at the information below.
  2. Check our map to see if you can get to a study site.
  3. Contact the research team for more details if you think you are suitable. Check back regularly as we are adding more contact info every day.
  4. Got a question? Our Clinical Trials Pack has lots of information about how to join clinical trials, switching hospitals for trials and what's involved.
  5. Contact us if you need any help.

About Asp-PSC

PSC is an autoimmune disease affecting the bile ducts and liver. Most people with PSC also have (IBD). We know that some people with PSC go on to develop liver failure and so need a transplant, and some people with both PSC and IBD have an increased risk of cancer of either the liver, bile ducts, gallbladder or bowel. Although they have a yearly colonoscopy (to look for signs of bowel cancer) detecting other cancers is currently more challenging.

Recent studies have suggested that taking aspirin may reduce the risk of developing these cancers in patients without PSC. This study will look at whether people with both PSC and IBD who take aspirin have a lower risk of developing a PSC-related cancer and a lower risk of needing a liver transplant.


Key information


Trial Name The Asp-PSC Study

Effect of Aspirin on Reducing Cancer & Improving Outcomes in Primary Sclerosing Cholangitis Identifier ISRCTN12358813
Phase 3
Intervention Aspirin or placebo (dummy drug) once daily for 5 years
Recruiting now? Recruiting soon at hospitals across the UK (February 2024)
Participating Centres See PSC Support map, the current sites list on and UK-PSC for up-to-date status for each centre.
Liver disease diagnosis Primary sclerosing cholangitis
Age 18 and over
Females: can I be pregnant? Yes
Is IBD (inflammatory bowel disease) allowed? Yes
Is there an ALP (alkaline phosphatase) requirement? No
Can I take UDCA (Urso),mesalazine, azathioprine or mercaptopurine, or a biologic therapy? If you are already on ursodeoxycholic acid (also known as UDCA or urso), mesalazine, azathioprine or mercaptopurine, or a biologic therapy for your IBD, the dose must have remained the same for 12 weeks before you start the study.
Can I take part if I have a stent? Yes
Are recent acute cholangitis (ie bacterial cholangitis) attacks allowed? Yes
Can I take part if I have had a liver transplant? Unfortunately, you cannot take part if you have had liver transplant.
Is cirrhosis allowed? Yes
Previous studies and information Review of aspirin in cancer: Shen X, Shen X. A potential role for aspirin in the prevention and treatment of cholangiocarcinoma. International Journal of Cancer. 2021 Mar 15;148(6):1323-30.
Are travel expenses covered? Yes
Procedures and tests include:
  • Questions about your health and medical history
  • Clinical exam
  • Temperature measurement
  • Weight measurement
  • Heart rate measurement
  • Listen to your heart and lungs
  • Examination of your skin and abdomen
  • Blood pressure check
  • Respiration rate measurement
  • A review of all your medications
  • A discussion about any new symptoms or complications you have (if any)
  • Review of your last blood tests
  • Questionnaires to be completed either at home or on the day of the visit
  • Blood and urine collection (optional)
  • Review of your last scans
  • You will be given a stool sample collection kit annually to drop at your GP surgery (as part of your NHS routine clinical care)
How many study visits will there be? How long will each study visit be? There are 12 visits to the hospital in total.
Duration of study (treatment duration/follow-up) The treatment duration will be for 5 years in total with a maximum period of follow-up for 5 years. You will not be expected to attend any trial visits in the follow-up period as data will be collected from your health records.
Basic design of study A multicentre, double-blind, randomised placebo-controlled trial.
How is the study drug thought to work? Research suggests that aspirin might reduce cancer risk by acting on various molecular pathways that promote cancer.
More detailed information about the trial Patient information Sheet
Link to sponsor

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