Evidence map›Paper›PMID 19491850›Full record

Trial reportThe American journal of gastroenterology2009

Properties of the neosquamous epithelium after radiofrequency ablation of Barrett's esophagus containing neoplasia.

Roos E Pouw, Joep J Gondrie, Agnieszka M Rygiel, Carine M Sondermeijer, Fiebo J ten Kate, Robert D Odze, Michael Vieth, Kausilia K Krishnadath, Jacques J Bergman

Abstract readClinical TrialComparative StudyMulticenter Study
PubMed Publisher
In one paragraph

Trial report in The American journal of gastroenterology, 2009. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 34 papers, 2 of them syntheses that pooled it.

0numbers the graph read from it
0cells of the map it votes in
34citing papers in PubMed, 2 pooled it
16.8field-weighted citation impact, top 1% 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

34 citing papers in PubMed, 2 syntheses or guidelines pooled it, 110 citations in OpenAlex.

  1. ACG Clinical Guideline: Diagnosis and Management of Barrett's Esophagus.The American journal of gastroenterology · 2016
    Guideline
  2. Pooled it
  3. Trial
  4. Trial
  5. Observational
  6. Article
  7. Review
  8. Review
  9. Article
  10. Article
  11. Article
  12. Article
  13. Review
  14. Update on management of Barrett's esophagus.World journal of gastrointestinal pharmacology and therapeutics · 2016
    Review
  15. Review
  16. Emerging Concepts for the Endoscopic Management of Superficial Esophageal Adenocarcinoma.Journal of gastrointestinal surgery : official journal of the Society for Surgery of the Alimentary Tract · 2016
    Review
  17. Article
  18. Article
  19. Article
  20. Article
4 · The record

Corrections and comments

5 · Who and what money

Authors and funding

9 authors at 3 institutions in 3 countries.

Roos E PouwDepartment of Gastroenterology and Hepatology, Academic Medical Center, Amsterdam, The Netherlands.
Joep J Gondrie
Agnieszka M Rygiel
Carine M Sondermeijer
Fiebo J ten Kate
Robert D Odze
Michael Vieth
Kausilia K Krishnadath
Jacques J Bergman
Academic Medical Center · NLBayreuth Medical Center · DEBrigham and Women's Hospital · US

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

objectivesEndoscopic radiofrequency ablation (RFA) eradicates intestinal metaplasia and intraepithelial neoplasia associated with Barrett's esophagus (BE), restoring an endoscopically normal neosquamous epithelium (NSE). We evaluated the post-RFA NSE for genetic abnormalities and buried glandular mucosa.

methodsEligible patients underwent RFA for BE containing early cancer and/or high-grade intraepithelial neoplasia with subsequent complete histological reversion to normal NSE. At baseline, the BE was sampled by brush cytology and biopsies. At least 2 months after RFA, the NSE was sampled by brush cytology, keyhole biopsies, and endoscopic resection. The untreated squamous epithelium was biopsied as a control. The baseline BE and post-RFA NSE were evaluated for immunohistochemical expression of Ki-67 and p53, and genetic abnormalities (DNA-fluorescent in situ hybridization: chromosome 1 and 9, p16 and p53). In addition, biopsy depth was compared for biopsies from the NSE and untreated squamous epithelium. The presence of buried glandular mucosa in NSE was assessed with primary and keyhole biopsy, and endoscopic resection.

resultsAll pretreatment specimens from all 22 patients showed abnormalities on immunohistochemical staining and fluorescent in situ hybridization, whereas all post-RFA NSE specimens were normal. All the post-RFA biopsies from the NSE contained full epithelia, whereas 37% contained lamina propria, a finding no different from biopsies from untreated squamous epithelium (36% lamina propria). Deeper keyhole biopsies contained lamina propria in 51%. All endoscopic resection specimens contained submucosa, whereas no biopsy or endoscopic resection specimen contained buried glandular mucosa.

conclusionsRigorous evaluation of the post-RFA NSE in patients who, at baseline, had BE containing early cancer high-grade intraepithelial neoplasia, showed neither persistent genetic abnormalities nor buried glandular mucosa.

Indexed as

AgedBarrett EsophagusBiopsyCatheter AblationCell ProliferationDisease ProgressionEndoscopy, GastrointestinalEpitheliumEsophageal NeoplasmsFemaleFollow-Up StudiesGenes, p53HumansImmunohistochemistryIn Situ Hybridization, FluorescenceIntestinal MucosaKi-67 Antigen

Identifiers

PMID19491850
OpenAlexW2117394362

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.