• 6499 Citations
  • 35 Scopus h-Index
20052020
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Research Output 2005 2020

40 Citations (Scopus)

Magnitude of Missed Esophageal Adenocarcinoma after Barrett's Esophagus Diagnosis: A Systematic Review and Meta-analysis

Visrodia, K., Singh, S., Krishnamoorthi, R., Ahlquist, D. A., Wang, K. K. N., Iyer, P. G. & Katzka, D. A., Mar 1 2016, In : Gastroenterology. 150, 3, p. 599-607e7

Research output: Contribution to journalArticle

Barrett Esophagus
Meta-Analysis
Adenocarcinoma
Endoscopy
Confidence Intervals
666 Citations (Scopus)

Management of Crohn's disease in adults

Lichtenstein, G. R., Hanauer, S. B., Sandborn, W. J., Inadomi, J., Baroni, D., Bernstein, D., Brugge, W., Chang, L., Cunningham, J., Dendrinos, K. G., DeVault, K., Edmundowicz, S., Ginsburg, P. M., Hornbuckle, K., Kefalas, C., Koch, T., Lehrer, J., Lembo, A., O'Brien, J., Papp, J. & 11 others, Parkman, H., Perumalsamy, K. S., Iyer, P. G., Roach, A., Sampliner, R., Sonnenberg, A., Vargo, J., Vege, S. S., Vela, M., Zein, N. & Zuckerman, M. J., Feb 2009, In : American Journal of Gastroenterology. 104, 2, p. 465-483 19 p.

Research output: Contribution to journalArticle

Crohn Disease
Guidelines
Physicians
Expert Testimony
Advisory Committees
2 Citations (Scopus)

Management of high grade dysplasia in Barrett's oesophagus with underlying oesophageal varices: A retrospective study

Palmer, W. C., Di Leo, M., Jovani, M., Heckman, M. G., Diehl, N. N., Iyer, P. G., Wolfsen, H. C. & Wallace, M. B., Sep 1 2015, In : Digestive and Liver Disease. 47, 9, p. 763-768 6 p.

Research output: Contribution to journalArticle

Barrett Esophagus
Esophageal and Gastric Varices
Retrospective Studies
Endoscopy
Ligation
3 Citations (Scopus)

Medical and endoscopic management of high-grade dysplasia in Barrett's esophagus

Wang, K. K. N., Tian, J. M., Gorospe, E., Penfield, J., Iyer, P. G., Goddard, T., Wongkeesong, M., Buttar, N. S., Lutzke, L. & Krishnadath, S., May 2012, In : Diseases of the Esophagus. 25, 4, p. 349-355 7 p.

Research output: Contribution to journalArticle

Barrett Esophagus
Neoplasms
Chromosomal Instability
Photochemotherapy
Radio
24 Citations (Scopus)

Metabolic syndrome as a risk factor for barrett esophagus: A population-based case-control study

Leggett, C., Nelsen, E. M., Tian, J., Schleck, C. B., Zinsmeister, A. R., Dunagan, K. T., Locke, G. R., Wang, K. K. N., Talley, N. J. & Iyer, P. G., 2013, In : Mayo Clinic Proceedings. 88, 2, p. 157-165 9 p.

Research output: Contribution to journalArticle

Barrett Esophagus
Case-Control Studies
Population
Odds Ratio
Control Groups

Miniature gastrointestinal endoscopy: Now and the future

McGoran, J. J., McAlindon, M. E., Iyer, P. G., Seibel, E. J., Haidry, R., Lovat, L. B. & Sami, S. S., Aug 14 2019, In : World journal of gastroenterology. 25, 30, p. 4051-4060 10 p.

Research output: Contribution to journalReview article

Open Access
Gastrointestinal Endoscopy
Endoscopy
Equipment and Supplies
Technology
Cost-Benefit Analysis
3 Citations (Scopus)
Adenocarcinoma
Biomarkers
Barrett Esophagus
Selection Bias
Observer Variation
2 Citations (Scopus)

Mucosal imaging advanced technologies in the gastrointestinal tract

Leggett, C. & Iyer, P. G., Oct 1 2015, In : Techniques in Gastrointestinal Endoscopy. 17, 4, p. 161-170 10 p.

Research output: Contribution to journalArticle

Narrow Band Imaging
Gastrointestinal Tract
Lasers
Technology
Endoscopy
1 Citation (Scopus)

No Association Between Vitamin D Status and Risk of Barrett's Esophagus or Esophageal Adenocarcinoma: A Mendelian Randomization Study

Stomach and Esophageal Cancer Study Consortium, Oct 2019, In : Clinical Gastroenterology and Hepatology. 17, 11, p. 2227-2235.e1

Research output: Contribution to journalArticle

Barrett Esophagus
Random Allocation
Vitamin D
Adenocarcinoma
Single Nucleotide Polymorphism
1 Citation (Scopus)

Novel Screening Tests for Barrett’s Esophagus

Codipilly, D. C. & Iyer, P. G., Sep 1 2019, In : Current gastroenterology reports. 21, 9, 42.

Research output: Contribution to journalReview article

Barrett Esophagus
Adenocarcinoma
Volatile Organic Compounds
Microbiota
MicroRNAs

Obesity and GERD impair esophageal epithelial permeability through 2 distinct mechanisms

Blevins, C. H., Dierkhising, R. A., Geno, D. M., Johnson, M. L., Vela, M. F., Ravi, K., Iyer, P. G. & Katzka, D. A., Oct 1 2018, In : Neurogastroenterology and Motility. 30, 10, e13403.

Research output: Contribution to journalArticle

Gastroesophageal Reflux
Electric Impedance
Permeability
Obesity
Acids
26 Citations (Scopus)

Obstructive sleep apnea is a risk factor for barrett's esophagus

Leggett, C., Gorospe, E. C., Calvin, A. D., Harmsen, W. S., Zinsmeister, A. R., Caples, S., Somers, V., Dunagan, K., Lutzke, L., Wang, K. K. N. & Iyer, P. G., 2014, In : Clinical Gastroenterology and Hepatology. 12, 4

Research output: Contribution to journalArticle

Barrett Esophagus
Obstructive Sleep Apnea
Gastroesophageal Reflux
Body Mass Index
Apnea
2 Citations (Scopus)
Barrett Esophagus
Lasers
Endoscopic Mucosal Resection
Endoscopy
Neoplasms
19 Citations (Scopus)

Outcomes of T1b esophageal adenocarcinoma patients

Tian, J., Iyer, P. G., Lutzke, L. S., Lewis, J. T. & Wang, K. K. N., Dec 2011, In : Gastrointestinal Endoscopy. 74, 6, p. 1201-1206 6 p.

Research output: Contribution to journalArticle

Esophagectomy
Adenocarcinoma
Neoplasm Metastasis
Lymph Nodes
Mortality
9 Citations (Scopus)

Pancreatic cyst epithelial denudation: A natural phenomenon in the absence of treatment

Gómez, V., Majumder, S., Smyrk, T. C., Topazian, M., Chari, S. T., Gleeson, F. C., Harmsen, W. S., Enders, F. T., Abu Dayyeh, B. K., Iyer, P. G., Pearson, R. K., Petersen, B. T., Rajan, E., Takahashi, N., Vege, S. S., Wang, K. K. N. & Levy, M. J., Jan 28 2016, (Accepted/In press) In : Gastrointestinal Endoscopy.

Research output: Contribution to journalArticle

Pancreatic Cyst
Cysts
Epithelium
Serous Cystadenoma
Neoplasms
17 Citations (Scopus)

Performance characteristics of unsedated ultrathin video endoscopy in the assessment of the upper GI tract: Systematic review and meta-analysis

Sami, S. S., Subramanian, V., Ortiz-Fernández-Sordo, J., Saeed, A., Singh, S., Guha, I. N., Iyer, P. G. & Ragunath, K., Nov 1 2015, In : Gastrointestinal Endoscopy. 82, 5, p. 782-792 11 p.

Research output: Contribution to journalArticle

Upper Gastrointestinal Tract
Endoscopy
Meta-Analysis
Confidence Intervals
Patient Preference
6 Citations (Scopus)

Persistence of Nondysplastic Barrett's Esophagus Is Not Protective Against Progression to Adenocarcinoma

Krishnamoorthi, R., Ramos, G. P., Crews, N., Johnson, M., Dierkhising, R., Shi, Q. D., Ginos, B., Wang, K. K. N., Katzka, D. A., Buttar, N. S. & Iyer, P. G., Jun 1 2017, In : Clinical Gastroenterology and Hepatology. 15, 6, p. 950-952 3 p.

Research output: Contribution to journalShort survey

Barrett Esophagus
Adenocarcinoma
2 Citations (Scopus)
Barrett Esophagus
Metaplasia
Meta-Analysis
Recurrence
Confidence Intervals
25 Citations (Scopus)

Photodynamic therapy for Barrett's esophagus: Does light still have a role?

Wang, K. K. N., Lutzke, L., Borkenhagen, L., Westra, W., Song, M. W. K., Iyer, P. G. & Buttar, N. S., Dec 2008, In : Endoscopy. 40, 12, p. 1021-1025 5 p.

Research output: Contribution to journalArticle

Barrett Esophagus
Photochemotherapy
Light
Esophageal Stenosis
Chest Pain
34 Citations (Scopus)

Physical activity is associated with reduced risk of esophageal cancer, particularly esophageal adenocarcinoma: A systematic review and meta-analysis

Singh, S., Devanna, S., Edakkanambeth Varayil, J., Murad, M. H. & Iyer, P. G., May 30 2014, In : BMC Gastroenterology. 14, 1, 101.

Research output: Contribution to journalArticle

Esophageal Neoplasms
Meta-Analysis
Adenocarcinoma
Exercise
Odds Ratio
30 Citations (Scopus)

Physical activity is associated with reduced risk of gastric cancer: A systematic review and meta-analysis

Singh, S., Varayil, J. E., Devanna, S., Murad, M. H. & Iyer, P. G., Jan 2014, In : Cancer Prevention Research. 7, 1, p. 12-22 11 p.

Research output: Contribution to journalArticle

Stomach Neoplasms
Meta-Analysis
Exercise
Confidence Intervals
Observational Studies

Point–Counterpoint: Screening and Surveillance for Barrett’s Esophagus, Is It Worthwhile?

Otaki, F. & Iyer, P. G., Aug 1 2018, In : Digestive Diseases and Sciences. 63, 8, p. 2081-2093 13 p.

Research output: Contribution to journalReview article

Barrett Esophagus
Adenocarcinoma
Health Services Needs and Demand
Survival
Incidence
18 Citations (Scopus)

Population screening for barrett esophagus: A prospective randomized pilot study

Chang, J. Y., Talley, N. J., Locke, G. R., Katzka, D. A., Schleck, C. D., Zinsmeister, A. R., Dunagan, K. T., Wu, T. T., Wang, K. K. N. & Iyer, P. G., 2011, In : Mayo Clinic Proceedings. 86, 12, p. 1174-1180 7 p.

Research output: Contribution to journalArticle

Barrett Esophagus
Capsule Endoscopy
Endoscopy
Population
Confidence Intervals
30 Citations (Scopus)

Positive correlation between endoscopist radiofrequency ablation volume and response rates in Barrett's esophagus

Fudman, D. I., Lightdale, C. J., Poneros, J. M., Ginsberg, G. G., Falk, G. W., Demarshall, M., Gupta, M., Iyer, P. G., Lutzke, L., Wang, K. K. N. & Abrams, J. A., 2014, In : Gastrointestinal Endoscopy. 80, 1, p. 71-77 7 p.

Research output: Contribution to journalArticle

Barrett Esophagus
Metaplasia
Tertiary Care Centers
Endoscopy
Histology
6 Citations (Scopus)

Predicting barrett's esophagus in families: An esophagus translational research network (BETRNet) model fitting clinical data to a familial paradigm

Sun, X., Elston, R. C., Barnholtz-Sloan, J. S., Falk, G. W., Grady, W. M., Faulx, A., Mittal, S. K., Canto, M., Shaheen, N. J., Wang, J. S., Iyer, P. G., Abrams, J. A., Tian, Y. D., Willis, J. E., Guda, K., Markowitz, S. D., Chandar, A., Warfe, J. M., Brock, W. & Chak, A., May 1 2016, In : Cancer Epidemiology Biomarkers and Prevention. 25, 5, p. 727-735 9 p.

Research output: Contribution to journalArticle

Translational Medical Research
Barrett Esophagus
Esophagus
Pedigree
Adenocarcinoma
14 Citations (Scopus)

Prediction of response to endoscopic therapy of Barrett's dysplasia by using genetic biomarkers

Timmer, M. R., Brankley, S. M., Gorospe, E. C., Sun, G., Lutzke, L. S., Iyer, P. G., Halling, K. C., Krishnadath, K. K. & Wang, K. K. N., Dec 1 2014, In : Gastrointestinal Endoscopy. 80, 6, p. 984-991 8 p.

Research output: Contribution to journalArticle

Biomarkers
Barrett Esophagus
Therapeutics
Fluorescence In Situ Hybridization
Cell Biology
94 Citations (Scopus)

Predictors of progression in barrett's esophagus: Current knowledge and future directions

Iyer, P. G., Bansal, A., Sharma, P. & Wang, K. K. N., Jul 2010, In : American Journal of Gastroenterology. 105, 7, p. 1490-1502 13 p.

Research output: Contribution to journalArticle

Barrett Esophagus
Adenocarcinoma
Biomarkers
Loss of Heterozygosity
Chemoprevention
8 Citations (Scopus)

Predictors of Progression in Barrett’s Esophagus with Low-Grade Dysplasia: Results from a Multicenter Prospective BE Registry

Krishnamoorthi, R., Lewis, J. T., Krishna, M., Crews, N. J., Johnson, M. L., Dierkhising, R. A., Ginos, B. F., Wang, K. K. N., Wolfsen, H. C., Fleischer, D. E., Ramirez, F. C., Buttar, N. S., Katzka, D. A. & Iyer, P. G., Apr 4 2017, (Accepted/In press) In : American Journal of Gastroenterology.

Research output: Contribution to journalArticle

Barrett Esophagus
Registries
Propensity Score
Proportional Hazards Models
Publications
18 Citations (Scopus)

Predictors of recurrent esophageal food impaction: A case-control study

Iyer, P. G., Reddy, J. G., Enders, F. T., Schmoll, J. A., Lewis, J. T. & Wongkeesong, L. M., Aug 2008, In : Journal of Clinical Gastroenterology. 42, 7, p. 771-775 5 p.

Research output: Contribution to journalArticle

Case-Control Studies
Food
Odds Ratio
Confidence Intervals
Recurrence
71 Citations (Scopus)

Predictors of stricture formation after photodynamic therapy for high-grade dysplasia in Barrett's esophagus{A figure is presented}

Iyer, P. G., Wang, K. K. N., Buttar, N. S., Wongkeesong, L. M., Lutzke, L. S. & Borkenhagen, L. S., Jan 2007, In : Gastrointestinal Endoscopy. 65, 1, p. 60-66 7 p.

Research output: Contribution to journalArticle

Barrett Esophagus
Photochemotherapy
Pathologic Constriction
Esophageal Stenosis
Odds Ratio
215 Citations (Scopus)

Prevalence and predictive factors of eosinophilic esophagitis in patients presenting with dysphagia: A prospective study

Iyer, P. G., Talley, N. J., Romero, Y., Arora, A. S., Kryzer, L. A., Smyrk, T. C. & Alexander, J. A., Dec 2007, In : American Journal of Gastroenterology. 102, 12, p. 2627-2632 6 p.

Research output: Contribution to journalArticle

Eosinophilic Esophagitis
Deglutition Disorders
Prospective Studies
Biopsy
Endoscopy
7 Citations (Scopus)

Prevalence and Predictors of Gastroesophageal Reflux Complications in Community Subjects

Crews, N. R., Johnson, M. L., Schleck, C. D., Enders, F. T., Wongkeesong, L. M., Wang, K. K. N., Katzka, D. A. & Iyer, P. G., Aug 10 2016, (Accepted/In press) In : Digestive Diseases and Sciences. p. 1-8 8 p.

Research output: Contribution to journalArticle

Barrett Esophagus
Gastroesophageal Reflux
Esophagitis
Abdominal Obesity
Tobacco Use
44 Citations (Scopus)

Prevalence and predictors of recurrent neoplasia after ablation of Barrett's esophagus

Badreddine, R. J., Iyer, P. G., Wang, K. K. N., Wong Kee Song, L. M., Buttar, N. S., Dunagan, K. T., Lutzke, L. S. & Borkenhagen, L. S., Apr 2010, In : Gastrointestinal Endoscopy. 71, 4, p. 697-703 7 p.

Research output: Contribution to journalArticle

Barrett Esophagus
Recurrence
Neoplasms
Photochemotherapy
Smoking
15 Citations (Scopus)

Prevalence of esophageal eosinophils in patients with barrett's esophagus

Ravi, K., Katzka, D. A., Smyrk, T. C., Iyer, P. G., Romero, Y., Francis, D. L., Lutzke, L., Tian, J. & Wang, K. K. N., May 2011, In : American Journal of Gastroenterology. 106, 5, p. 851-857 7 p.

Research output: Contribution to journalArticle

Barrett Esophagus
Eosinophils
Eosinophilia
Eosinophilic Esophagitis
Gastroesophageal Reflux
8 Citations (Scopus)

Prospective evaluation of adverse events following lower gastrointestinal tract EUS FNA

Levy, M. J., Abu Dayyeh, B. K., Fujii, L. L., Boardman, L. A., Clain, J. E., Iyer, P. G., Rajan, E., Topazian, M., Wang, K. K. N., Wiersema, M. J. & Gleeson, F. C., 2014, In : American Journal of Gastroenterology. 109, 5, p. 676-685 10 p.

Research output: Contribution to journalArticle

Lower Gastrointestinal Tract
Fine Needle Biopsy
Odds Ratio
Confidence Intervals
Pain
6 Citations (Scopus)

Putting it Through the Nose: The Ins and Outs of Transnasal Endoscopy

Blevins, C. H. & Iyer, P. G., Aug 16 2016, (Accepted/In press) In : American Journal of Gastroenterology.

Research output: Contribution to journalArticle

35 Citations (Scopus)

Radiofrequency Ablation Is Associated with Decreased Neoplastic Progression in Patients with Barrett's Esophagus and Confirmed Low-Grade Dysplasia

Small, A. J., Araujo, J. L., Leggett, C., Mendelson, A. H., Agarwalla, A., Abrams, J. A., Lightdale, C. J., Wang, T. C., Iyer, P. G., Wang, K. K. N., Rustgi, A. K., Ginsberg, G. G., Forde, K. A., Gimotty, P. A., Lewis, J. D., Falk, G. W. & Bewtra, M., Sep 1 2015, In : Gastroenterology. 149, 3, p. 567e3-576e3

Research output: Contribution to journalArticle

Barrett Esophagus
Adenocarcinoma
Endoscopy
Selection Bias
Retrospective Studies
23 Citations (Scopus)

Rates and predictors of progression to esophageal carcinoma in a large population-based Barrett's esophagus cohort

Krishnamoorthi, R., Borah, B. J., Heien, H., Das, A., Chak, A. & Iyer, P. G., Aug 30 2015, (Accepted/In press) In : Gastrointestinal Endoscopy.

Research output: Contribution to journalArticle

Barrett Esophagus
Esophageal Neoplasms
Carcinoma
Population
Hydroxymethylglutaryl-CoA Reductase Inhibitors
3 Citations (Scopus)

Recent developments in pathogenesis, diagnosis and therapy of Barrett's esophagus

Halland, M., Katzka, D. A. & Iyer, P. G., Jun 7 2015, In : World Journal of Gastroenterology. 21, 21, p. 6479-6490 12 p.

Research output: Contribution to journalArticle

Barrett Esophagus
Western World
Cost of Illness
Adenocarcinoma
Therapeutics
158 Citations (Scopus)

Recurrence of esophageal intestinal metaplasia after endoscopic mucosal resection and radiofrequency ablation of Barrett's esophagus: Results from a us multicenter consortium

Gupta, M., Iyer, P. G., Lutzke, L., Gorospe, E. C., Abrams, J. A., Falk, G. W., Ginsberg, G. G., Rustgi, A. K., Lightdale, C. J., Wang, T. C., Fudman, D. I., Poneros, J. M. & Wang, K. K. N., Jul 2013, In : Gastroenterology. 145, 1

Research output: Contribution to journalArticle

Barrett Esophagus
Metaplasia
Recurrence
Endoscopic Mucosal Resection
Biopsy
12 Citations (Scopus)

Remote malignant intravascular thrombi: EUS-guided FNA diagnosis and impact on cancer staging

Rustagi, T., Gleeson, F. C., Chari, S. T., Abu Dayyeh, B. K., Farnell, M. B., Iyer, P. G., Kendrick, M. L., Pearson, R. K., Petersen, B. T., Rajan, E., Topazian, M., Truty, M., Vege, S. S., Wang, K. K. N. & Levy, M. J., Aug 16 2016, (Accepted/In press) In : Gastrointestinal Endoscopy.

Research output: Contribution to journalArticle

Endoscopic Ultrasound-Guided Fine Needle Aspiration
Neoplasm Staging
Thrombosis
Cell Biology
Magnetic Resonance Imaging

Reply

Iyer, P. G., Mar 1 2011, In : Clinical Gastroenterology and Hepatology. 9, 3, p. 277-278 2 p.

Research output: Contribution to journalLetter

Reply

Leggett, C. & Iyer, P. G., 2014, In : Clinical Gastroenterology and Hepatology. 12, 6, p. 1056 1 p.

Research output: Contribution to journalArticle

Barrett Esophagus
Obstructive Sleep Apnea

Response

Krishnamoorthi, R., Borah, B. J., Heien, H., Das, A., Chak, A. & Iyer, P. G., Feb 1 2017, In : Gastrointestinal Endoscopy. 85, 2, p. 463-464 2 p.

Research output: Contribution to journalLetter

Response

Singh, S., Manickam, P., Iyer, P. G. & Desai, T. K., Feb 1 2015, In : Gastrointestinal Endoscopy. 81, 2, p. 484-485 2 p.

Research output: Contribution to journalArticle

Barrett Esophagus
Esophageal Neoplasms
Adenocarcinoma

Response:

Codipilly, D. C., Qin, Y., Dawsey, S. M., Kisiel, J. B., Topazian, M., Ahlquist, D. & Iyer, P. G., Feb 1 2019, In : Gastrointestinal Endoscopy. 89, 2, 1 p.

Research output: Contribution to journalLetter

Response to Kosmidou et al.

Iyer, P. G. & Ahlquist, D. A., Jan 1 2018, (Accepted/In press) In : American Journal of Gastroenterology.

Research output: Contribution to journalArticle

Response to Syed et al.

Sami, S. S., Ragunath, K. & Iyer, P. G., Jun 10 2015, In : American Journal of Gastroenterology. 110, 6, p. 937-938 2 p.

Research output: Contribution to journalArticle

Digestive System Endoscopy
Mass Screening
Barrett Esophagus
1 Citation (Scopus)

Risk of progression in Barrett's esophagus indefinite for dysplasia: a systematic review and meta-analysis

Krishnamoorthi, R., Mohan, B. P., Jayaraj, M., Wang, K. K. N., Katzka, D. A., Ross, A., Adler, D. G. & Iyer, P. G., Jan 1 2019, (Accepted/In press) In : Gastrointestinal endoscopy.

Research output: Contribution to journalReview article

Barrett Esophagus
Meta-Analysis
Adenocarcinoma
Incidence
Cohort Studies
35 Citations (Scopus)

Risk of recurrence of Barrett's esophagus after successful endoscopic therapy

Krishnamoorthi, R., Singh, S., Ragunathan, K., Katzka, D. A., Wang, K. K. N. & Iyer, P. G., Jun 1 2016, In : Gastrointestinal Endoscopy. 83, 6, p. 1090-1106 17 p.

Research output: Contribution to journalArticle

Barrett Esophagus
Metaplasia
Recurrence
Adenocarcinoma
Therapeutics