Evidence map›Paper›PMID 18538141›Full record

ArticleGastroenterology2008

Utility of biomarkers in prediction of response to ablative therapy in Barrett's esophagus.

Ganapathy A Prasad, Kenneth K Wang, Kevin C Halling, Navtej S Buttar, Louis-Michel Wongkeesong, Alan R Zinsmeister, Shannon M Brankley, Emily G Barr Fritcher, Wytske M Westra, Kausilia K Krishnadath and 2 more

Open access · bronzeAbstract read
In one paragraph

Article in Gastroenterology, 2008. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 27 papers, 1 of them a synthesis that pooled it.

0numbers the graph read from it
0cells of the map it votes in
27citing papers in PubMed, 1 pooled it
8.0field-weighted citation impact, top 2% 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

27 citing papers in PubMed, 1 synthesis or guideline pooled it, 76 citations in OpenAlex.

  1. Pooled it
  2. Utility of ancillary studies in the diagnosis and risk assessment of Barrett's esophagus and dysplasia.Modern pathology : an official journal of the United States and Canadian Academy of Pathology, Inc · 2022
    Review
  3. Article
  4. Article
  5. Article
  6. Review
  7. Article
  8. Review
  9. Barrett's esophagus in 2016: From pathophysiology to treatment.World journal of gastrointestinal pharmacology and therapeutics · 2016
    Review
  10. Article
  11. Article
  12. Review
  13. Predictive biomarkers for Barrett's esophagus: so near and yet so far.Diseases of the esophagus : official journal of the International Society for Diseases of the Esophagus · 2013
    Review
  14. Review
  15. Article
  16. Review
  17. Article
  18. Safety of prior endoscopic mucosal resection in patients receiving radiofrequency ablation of Barrett's esophagus.Clinical gastroenterology and hepatology : the official clinical practice journal of the American Gastroenterological Association · 2012
    Article
  19. Article
  20. Review
4 · The record

Corrections and comments

5 · Who and what money

Authors and funding

12 authors at 1 institution in 1 country.

Ganapathy A PrasadBarrett's Esophagus Unit, Division of Gastroenterology & Hepatology, Mayo Clinic College of Medicine, Rochester, Minnesota, USA.
Kenneth K Wang
Kevin C Halling
Navtej S Buttar
Louis-Michel Wongkeesong
Alan R Zinsmeister
Shannon M Brankley
Emily G Barr Fritcher
Wytske M Westra
Kausilia K Krishnadath
Lori S Lutzke
Lynn S Borkenhagen
Mayo Clinic · US

Funding

Biomarkers in Phototherapy of Barrett's EsophagusR01CA097048 · NCI · MAYO CLINIC ROCHESTER · PI WANG, KENNETH K · 2002 to 2010
$2.3M
Endoscopic Therapy of Early Cancer in Barretts EsophagusR01CA111603 · NCI · MAYO CLINIC ROCHESTER · PI WANG, KENNETH K · 2005 to 2009
$1.6M
Novel Method of Surveillance in Barrett's EsophagusR21CA122426 · NCI · MAYO CLINIC ROCHESTER · PI WANG, KENNETH K · 2007 to 2008
$298k
NCI NIH HHS R01 CA097048NCI NIH HHS R01CA097048NCI NIH HHS R01 CA111603NCI NIH HHS R01 CA111603-01A1NCI NIH HHS R21 CA122426NCI NIH HHS R21CA122426-01
6 · The paper itself

Abstract

BACKGROUND &

aimsPhotodynamic therapy (PDT) has been shown to be effective in the treatment of high-grade dysplasia (HGD)/mucosal carcinoma in Barrett's esophagus (BE). Substantial proportions of patients do not respond to PDT or progress to carcinoma despite PDT. The role of biomarkers in predicting response to PDT is unknown. We aimed to determine if biomarkers known to be associated with neoplasia in BE can predict loss of dysplasia in patients treated with ablative therapy for HGD/intramucosal cancer.

methodsPatients with BE and HGD/intramucosal cancer were studied prospectively from 2002 to 2006. Biomarkers were assessed using fluorescence in situ hybridization performed on cytology specimens, for region-specific and centromeric probes. Patients were treated with PDT using cylindric diffusing fibers (wavelength, 630 nm; energy, 200 J/cm fiber). Univariate and multiple variable logistic regression was performed to determine predictors of response to PDT.

resultsA total of 126 consecutive patients (71 who underwent PDT and 55 patients who did not undergo PDT and were under surveillance, to adjust for the natural history of HGD), were included in this study. Fifty (40%) patients were responders (no dysplasia or carcinoma) at 3 months after PDT. On multiple variable analysis, P16 allelic loss (odds ratio [OR], 0.32; 95% confidence interval [CI], 0.10-0.96) predicted decreased response to PDT. BE segment length (OR, 0.71; 95% CI, 0.59-0.85), and performance of PDT (OR, 7.17; 95% CI, 2.50-20.53) were other independent predictors of loss of dysplasia.

conclusionsp16 loss detected by fluorescence in situ hybridization can help predict loss of dysplasia in patients with BE and HGD/mucosal cancer. Biomarkers may help in the selection of appropriate therapy for patients and improve treatment outcomes.

Indexed as

Gene Expression Regulation, NeoplasticPhotochemotherapyAgedBarrett EsophagusBiomarkers, TumorCarcinomaErb-b2 Receptor Tyrosine KinasesEsophageal NeoplasmsEsophagusFemaleGenes, p16HumansIn Situ Hybridization, FluorescenceLoss of HeterozygosityMaleMiddle AgedBiomarkers, TumorERBB2 protein, humanErb-b2 Receptor Tyrosine KinasesMYC protein, humanProto-Oncogene Proteins c-mycTP53 protein, humanTumor Suppressor Protein p53

Identifiers

PMID18538141
PMCPMC3896328
OpenAlexW2053028361

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.