Evidence map›Paper›PMID 19757048›Full record

Trial reportDigestive diseases and sciences2009

Chemoprevention of colonic polyps with balsalazide: an exploratory, double-blind, placebo-controlled study.

Jonathan P Terdiman, Lorin K Johnson, Young S Kim, Marvin H Sleisenger, James R Gum, Ann Hayes, Vivian K Weinberg, Kenneth R McQuaid

Open access · hybridAbstract readRandomized Controlled Trial
In one paragraph

Trial report in Digestive diseases and sciences, 2009. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 2 papers.

0numbers the graph read from it
0cells of the map it votes in
2citing papers in PubMed
0.6field-weighted citation impact, top 31% of its field
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.

Neither the registry nor the abstract names a trial number. If this is a trial report, that itself is worth knowing.

3 · Its place in the literature

Who cites it

2 citing papers in PubMed, 10 citations in OpenAlex.

  1. Review
  2. Article
4 · The record

Corrections and comments

PubMed lists nothing against this paper. Absence here is not a guarantee, only a check that was made.

5 · Who and what money

Authors and funding

8 authors at 4 institutions in 1 country.

Jonathan P TerdimanDivision of Gastroenterology, Department of Medicine, University of California, San Francisco, San Francisco, CA 94143, USA. Jonathan.Terdiman@ucsf.edu
Lorin K Johnson
Young S Kim
Marvin H Sleisenger
James R Gum
Ann Hayes
Vivian K Weinberg
Kenneth R McQuaid
San Francisco VA Medical Center · USUniversity of California, San Francisco · USEpix Pharmaceuticals (United States) · USUCSF Helen Diller Family Comprehensive Cancer Center · US

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

backgroundA number of agents, including aspirin, nonsteroidal antiinflammatory drugs, cyclooxygenase-2 inhibitors, folic acid, calcium, and vitamins, have been evaluated for their potential in chemoprevention of sporadic colorectal adenomas or cancer. Preclinical data suggest that 5-aminosalicylates also may have a chemopreventive effect.

aimTo investigate chemoprevention of colonic polyps with balsalazide, a 5-aminosalicylate prodrug.

methodsIn this randomized, double-blind, placebo-controlled study, adults diagnosed with small polyps in the rectosigmoid colon were treated with either balsalazide 3 g/d or placebo for 6 months. Follow-up lower endoscopy was performed, and all polyps were measured and analyzed histologically. The primary endpoint was reduction in mean size of the largest polyp per subject.

resultsAmong 241 participants screened, 86 were randomized to treatment, with 75 subjects evaluable. Balsalazide 3 g/d (n = 38) did not significantly reduce the mean size of the largest colonic polyp or the number of polyps compared with placebo (n = 37). Although not significant, post-hoc analysis revealed that total adenoma burden per subject, calculated as the sum of the volumes of all adenomas in mm3, increased by 55% in the balsalazide group compared with 95% in the placebo group.

conclusionsAlthough balsalazide did not have significant chemopreventive effects on established colonic polyps, these results can aid in designing future prospective studies.

Indexed as

AdenomaAgedApoptosisColonic NeoplasmsColonic PolypsColon, SigmoidDouble-Blind MethodGastrointestinal AgentsHumansMaleMesalamineMiddle AgedPhenylhydrazinesProspective StudiesbalsalazideGastrointestinal AgentsMesalaminePhenylhydrazines

Identifiers

PMID19757048
PMCPMC2762046
OpenAlexW2024880178

What OpenQuestion holds

Textmetadata
Read underepoch 390

Registered trials

None linked

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.