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NCT Number: NCT02202967

Misoprostol for Small Bowel Ulcers and Obscure Bleeding Due to Aspirin or Nonsteroidal Antiinflammatory Drugs

Anti-inflammatory tablets (non-steroidal anti-inflammatory drugs) continue to be used commonly worldwide to relieve pain caused by arthritis. Likewise, aspirin is used by many patients in order to prevent blood clots. Despite their desired benefits, these medicines can cause internal bleeding from the digestive system. The source of this bleeding can be obvious (overt), or obscure and thought to come from the small intestine. Obscure bleeding can show as anemia due to lack of iron in the blood. Small intestine ulcers are now easily diagnosed using an endoscope the size of a big pill (video capsule endoscopy). Small bowel ulcers are not related to stomach acid and therefore do not heal using remedies usually taken to stop acid formation. A different drug, misoprostol, consists of a chemical (prostaglandin) that is usually lacking in patients using aspirin or anti-inflammatory drugs. Misoprostol is licenced to heal stomach and duodenal ulcers in patients using these drugs. Our hypothesis is that misoprostol might be effective in healing small bowel ulcers as suggested by pilot studies; however, such works only included small numbers of patients, did not include control groups and both patients and investigators knew the nature of the tablets used. To test this hypothesis, we propose to compare misoprostol to a dummy tablet. The numbers of subjects to be studied have been calculated using established statistical methods

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Key information

Conditions

Chronic Arthritis Anemia Arrhythmias, Cardiac Atrial Fibrillation Bleeding Cardiovascular Diseases Heart Diseases Hematologic Diseases Hemic and Lymphatic Diseases Hemorrhage Ischemic Heart Disease Myocardial Ischemia Pathologic Processes Pathological Conditions, Signs and Symptoms Vascular Diseases

Age range

18 year–90 year

Sex eligibility

All sexes

Study type

Interventional

Phase

Phase 3

Primary location

University Hospital Crosshouse

Kilmarnock, Scotland, KA2 0BE, United Kingdom

About this study

METHODOLOGY:

  • Upper gastrointestinal endoscopy and colonoscopy on patients with obscure bleeding and/ or iron deficiency anemia.
  • Video capsule endoscopy on those fulfilling the inclusion criteria
  • Randomization to Misoprostol 200 micrograms or placebo, 4 times each day given for 8 weeks to aspirin/ NSAID users with erosive small bowel lesions.
  • Video capsule endoscopy at 8 weeks to check healing of small bowel lesions.
  • Full blood count at baseline and monthly intervals (0, 4, and 8 weeks)

Who can participate

Healthy volunteers accepted: No

Only the study team can determine whether someone qualifies for participation.

Inclusion criteria

Obscure occult gastrointestinal bleeding: presence of one or more of the following:

  • Positive fecal occult blood test within last 3 months
  • Iron deficiency anemia (ferritin <100 ug/l, hemoglobin [Hb] 7-12 g/dl [female] or 7-13 g/dl [male])
  • Drop in haemoglobin, > 2gm/dl from baseline, in the absence of potential or actively bleeding lesion detectable on upper endoscopy or colonoscopy.

Normal/ absence of potentially bleeding lesions on full upper endoscopy and colonoscopy.

Taking low-dose aspirin (75-325m/ day) and/ or NSAIDs

MAIN EXCLUSION CRITERIA:

  • Incomplete upper endoscopy or colonoscopy
  • Systemic disease that is unstable at the time of randomisation (unstable vital signs; ongoing non-gastrointestinal investigations; frequent modifications to treatment)
  • Intake of certain drugs: high-dose steroids (>7.5-mg prednisolone/ day), cytotoxic drugs, or warfarin.
  • Upper gastrointestinal lesions: oesophageal varices; oesophageal stricture; oesophageal or gastric neoplasms; pyloric stenosis; peptic ulcers; vascular malformations.
  • Colonic disorders: neoplasms or adenomatous polyps; inflammatory bowel disease; vascular malformations; actively bleeding diverticular disease
  • Women planning pregnancy, pregnant or women of child-bearing potential not using two contraceptive methods, one of which must be highly effective [implants, injectables, combined oral contraceptives, some intrauterine devices (IUDs), sexual abstinence or vasectomised partner]
  • Hypotension: systolic blood pressure <100-mm Hg.

Treatment and study plan

Misoprostol

Drug

Misoprostol oral tablets/ capsules contain 200 mcg of Misoprostol, a synthetic prostaglandin E1 analog

Other names: Cytotec (R)

Placebo

Drug

Placebo contains lactose granules

Other names: Dummy drug

Primary outcomes

  1. Full healing of small bowel mucosal ulcers or erosions in response to misoprostol in users of aspirin or NSAIDs.

    Time frame: 8 weeks

    Ulcers or smaller lesions (erosions) should totally disappear by the end of the study

Secondary outcomes

  1. Change in the numbers of mucosal ulcers and erosions

    Time frame: 8 weeks

    Any increase or decrease in the numbers of ulcers and erosions will be measured at the end of the study

Other outcomes

  1. Change in blood haemoglobin level

    Time frame: 8 weeks

    Any rise or drop in the haemoglobin level will be measured at the end of the study

Sponsors and collaborators

Lead sponsor

NHS Greater Glasgow and Clyde

Other

Registry information

Official study title

Misoprostol for the Healing of Small Bowel Ulceration in Patients With Obscure Blood Loss While Taking Low-dose Aspirin or Nonsteroidal Antiinflammatory Drugs [MASTERS Trial]

Acronym: MASTERS

Important dates

Study start
2016
Primary completion
2017
Study completion
2017
First posted
Jul 29, 2014
Registry last updated
Aug 14, 2018

OpenTrials presents study information sourced from ClinicalTrials.gov. The official registry record should be consulted for the latest information.

View the official ClinicalTrials.gov record (opens in a new tab)

This listing is for discovery and informational purposes only. It is not medical advice, does not guarantee that a study is recruiting, and does not determine eligibility. Contact the study team and a qualified healthcare professional when considering participation.

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