Evidence map›Paper›PMID 15591509›Full record

Trial reportGut2005

Trichuris suis therapy in Crohn's disease.

R W Summers, D E Elliott, J F Urban, R Thompson, J V Weinstock

Registry-linked trialAbstract readClinical Trial
In one paragraph

Trial report in Gut, 2005. The graph could read no effect estimate from its abstract, so it casts no vote on the map. It is linked to trial NCT01734941 (A Phase 2 Randomized Three-Arm Double-Blind Placebo-Controlled Study to Evaluate the Safety and Efficacy of 16 Weeks of Treatment With Trichuris Suis Ova), which is not on this map. Cited by 275 papers, 4 of them syntheses that pooled it.

0numbers the graph read from it
0cells of the map it votes in
275citing papers in PubMed, 4 pooled it
–field-weighted citation impact
1 · What the graph read from it

What it found

Each row is one number read from the abstract, on the scale the paper reported it, with its interval. Left of the dashed line favours the treatment, right favours the comparator. Under each row is the sentence it came from. New to these charts? A ten-minute tutorial.

The abstract states no effect estimate the extractor could read, or names no intervention and outcome on the map, so this paper lights no cell and moves no belief. It is still indexed, cited and linked below.

2 · The registry

The trial behind it

Trials whose registry record cites this paper, or whose number appears in the abstract. A trial that started after this paper was published is citing it as background, not reporting it.

NCT01734941 phase2terminatednot on this mapstarted 2014, after this paper: background citation

A Phase 2 Randomized Three-Arm Double-Blind Placebo-Controlled Study to Evaluate the Safety and Efficacy of 16 Weeks of Treatment With Trichuris Suis Ova (TSO) Therapy in Pediatric Patients Ages 6 to 17 With Autism

TypeinterventionalSponsorHadassah Medical OrganizationRan2014 to 2015Enrolled9ConditionsAutistic Spectrum DisordersArmsTSO, Placebo
3 · Its place in the literature

Who cites it

275 citing papers in PubMed, 4 syntheses or guidelines pooled it.

  1. Pooled it
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  14. Frontiers in immunology · 2026
    Review
  15. Isolation ofF1000Research · 2026
    Article
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215 more citing papers are in PubMed but not listed here.

4 · The record

Corrections and comments

5 · Who and what money

Authors and funding

5 authors.

R W SummersJames A Clifton Center for Digestive Diseases, Department of Internal Medicine, University of Iowa Roy J and Lucille A Carver College of Medicine, 200 Hawkins Drive, Iowa City, IA 52242, USA. robert-summers@uiowa.edu
D E Elliott
J F Urban
R Thompson
J V Weinstock

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

backgroundCrohn's disease is common in highly industrialised Western countries where helminths are rare and uncommon in less developed areas of the world where most people carry worms. Helminths diminish immune responsiveness in naturally colonised humans and reduce inflammation in experimental colitis. Thus exposure to helminths may help prevent or even ameliorate Crohn's disease.

aimsThe aim of the study was to determine the safety and possible efficacy of the intestinal helminth Trichuris suis in the treatment of patients with active Crohn's disease. PATIENTS: Twenty nine patients with active Crohn's disease, defined by a Crohn's disease activity index (CDAI) > or =220 were enrolled in this open label study.

methodsAll patients ingested 2500 live T suis ova every three weeks for 24 weeks, and disease activity was monitored by CDAI. Remission was defined as a decrease in CDAI to less than 150 while a response was defined as a decrease in CDAI of greater than 100.

resultsAt week 24, 23 patients (79.3%) responded (decrease in CDAI >100 points or CDAI <150) and 21/29 (72.4%) remitted (CDAI <150). Mean CDAI of responders decreased 177.1 points below baseline. Analysis at week 12 yielded similar results. There were no adverse events.

conclusionsThis new therapy may offer a unique, safe, and efficacious alternative for Crohn's disease management. These findings also support the premise that natural exposure to helminths such as T suis affords protection from immunological diseases like Crohn's disease.

Indexed as

AdolescentAdultAgedAnimalsCrohn DiseaseFemaleHost-Parasite InteractionsHumansMaleMiddle AgedRemission InductionSeverity of Illness IndexTreatment OutcomeTrichuriasisTrichuris

Identifiers

PMID15591509
PMCPMC1774382

What OpenQuestion holds

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Registered trials

Read under generation 80e0d062 · epoch 390. Bibliography from PubMed, PubMed Central and OpenAlex; grants from NIH RePORTER; trial links from ClinicalTrials.gov; estimates, votes and beliefs from the OpenQuestion graph.