• 6379 Citations
  • 34 Scopus h-Index
20052019
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Research Output 2005 2019

2015
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

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 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
11 Citations (Scopus)

Role of Obesity in the Pathogenesis and Progression of Barrett's Esophagus

Chandar, A. K. & Iyer, P. G., Jun 1 2015, In : Gastroenterology Clinics of North America. 44, 2, p. 249-264 16 p.

Research output: Contribution to journalArticle

Barrett Esophagus
Abdominal Obesity
Obesity
Inflammation
Insulin Resistance
2 Citations (Scopus)

Screening for Barrett's Esophagus

Gupta, M. & Iyer, P. G., Jun 1 2015, In : Gastroenterology Clinics of North America. 44, 2, p. 265-283 19 p.

Research output: Contribution to journalArticle

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

Screening for barrett's esophagus and esophageal adenocarcinoma: Rationale, recent progress, challenges, and future directions

Sami, S. S., Ragunath, K. & Iyer, P. G., Apr 1 2015, In : Clinical Gastroenterology and Hepatology. 13, 4, p. 623-634 12 p.

Research output: Contribution to journalArticle

Barrett Esophagus
Adenocarcinoma
Biomarkers
Mortality
Direction compound
15 Citations (Scopus)

Yield of Repeat Endoscopy in Barrett’s Esophagus with No Dysplasia and Low-Grade Dysplasia: A Population-Based Study

Visrodia, K., Iyer, P. G., Schleck, C. D., Zinsmeister, A. R. & Katzka, D. A., May 9 2015, (Accepted/In press) In : Digestive Diseases and Sciences.

Research output: Contribution to journalArticle

Barrett Esophagus
Endoscopy
Adenocarcinoma
Population
Biopsy
2014
132 Citations (Scopus)

Acid-suppressive medications and risk of oesophageal adenocarcinoma in patients with barrett's oesophagus: A systematic review and meta- Analysis

Singh, S., Garg, S. K., Singh, P. P., Iyer, P. G. & El-Serag, H. B., 2014, In : Gut. 63, 8, p. 1229-1237 9 p.

Research output: Contribution to journalArticle

Barrett Esophagus
Meta-Analysis
Adenocarcinoma
Proton Pump Inhibitors
Acids
27 Citations (Scopus)

Effects of autofluorescence imaging on detection and treatment of early neoplasia in patients with barrett's esophagus

Boerwinkel, D. F., Holz, J. A., Kara, M. A., Meijer, S. L., Wallace, M. B., Wong Kee Song, L. M., Ragunath, K., Wolfsen, H. C., Iyer, P. G., Wang, K. K. N., Weusten, B. L., Aalders, M. C., Curvers, W. L. & Bergman, J. J. G. H. M., 2014, In : Clinical Gastroenterology and Hepatology. 12, 5, p. 774-781 8 p.

Research output: Contribution to journalArticle

Barrett Esophagus
Optical Imaging
Neoplasms
Therapeutics
Endoscopy
46 Citations (Scopus)

Effects of Topical Steroids on Tight Junction Proteins and Spongiosis in Esophageal Epithelia of Patients With Eosinophilic Esophagitis

Katzka, D. A., Tadi, R., Smyrk, T. C., Katarya, E., Sharma, A., Geno, D. M., Camilleri, M., Iyer, P. G., Alexander, J. A. & Buttar, N. S., Nov 1 2014, In : Clinical Gastroenterology and Hepatology. 12, 11, p. 1824-1829 6 p.

Research output: Contribution to journalArticle

Eosinophilic Esophagitis
Tight Junction Proteins
Tight Junctions
Epithelium
Steroids
79 Citations (Scopus)

Incidence of esophageal adenocarcinoma in Barrett's esophagus with low-grade dysplasia: A systematic review and meta-analysis

Singh, S., Manickam, P., Amin, A. V., Samala, N., Schouten, L. J., Iyer, P. G. & Desai, T. K., 2014, In : Gastrointestinal Endoscopy. 79, 6

Research output: Contribution to journalArticle

Barrett Esophagus
Meta-Analysis
Adenocarcinoma
Incidence
Confidence Intervals
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
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
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
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
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

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
8 Citations (Scopus)

Screening for Barrett's esophagus: Results from a population-based survey

Gupta, M., Beebe, T. J., Dunagan, K. T., Schleck, C. D., Zinsmeister, A. R., Talley, N. J., Locke, G. R. & Iyer, P. G., 2014, In : Digestive Diseases and Sciences. 59, 8, p. 1831-1850 20 p.

Research output: Contribution to journalArticle

Barrett Esophagus
Population
Endoscopy
Adenocarcinoma
Capsule Endoscopy
2013
6 Citations (Scopus)

Assessment of the diagnostic performance and interobserver variability of endocytoscopy in Barrett's esophagus: A pilot ex-vivo study

Tomizawa, Y., Iyer, P. G., Wongkeesong, L. M., Buttar, N. S., Lutzke, L. S., Wu, T. T. & Wang, K. K. N., Dec 14 2013, In : World Journal of Gastroenterology. 19, 46, p. 8652-8658 7 p.

Research output: Contribution to journalArticle

Barrett Esophagus
Observer Variation
Physicians
Methylene Blue
Gastroenterology
35 Citations (Scopus)

Association of Barrett's Esophagus With Type II Diabetes Mellitus: Results From a Large Population-based Case-Control Study

Iyer, P. G., Borah, B. J., Heien, H. C., Das, A., Cooper, G. S. & Chak, A., Sep 2013, In : Clinical Gastroenterology and Hepatology. 11, 9, p. 1108-1114 7 p.

Research output: Contribution to journalArticle

Barrett Esophagus
Type 2 Diabetes Mellitus
Case-Control Studies
Population
Body Mass Index
164 Citations (Scopus)
Adiposity
Metaplasia
Meta-Analysis
Adenocarcinoma
Barrett Esophagus

Endoscopic epiglottic mucosal banding as a cause of laryngospasm

Garcia-Marcinkiewicz, A. G., Barbara, D. W., Iyer, P. G. & Diedrich, D. A., Oct 2013, In : Canadian Journal of Anesthesia. 60, 10, p. 1020-1021 2 p.

Research output: Contribution to journalArticle

23 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
156 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
40 Citations (Scopus)

Safety of endoscopic mucosal resection for Barrett's esophagus

Tomizawa, Y., Iyer, P. G., Wong Kee Song, L. M., Buttar, N. S., Lutzke, L. S. & Wang, K. K. N., Sep 2013, In : American Journal of Gastroenterology. 108, 9, p. 1440-1447 8 p.

Research output: Contribution to journalArticle

Barrett Esophagus
Safety
Pathologic Constriction
Endoscopic Mucosal Resection
Hemorrhage
98 Citations (Scopus)
Hydroxymethylglutaryl-CoA Reductase Inhibitors
Barrett Esophagus
Esophageal Neoplasms
Meta-Analysis
Odds Ratio
20 Citations (Scopus)

Training in small-bowel capsule endoscopy: Assessing and defining competency

Rajan, E., Iyer, P. G., Oxentenko, A. S., Pardi, D. S., Alexander, J. A., Baron, T. H., Bruining, D. H., Hansel, S. L., Larson, M. V., Murray, J. A., Debritto, J., Dierkhising, R. A. & Gostout, C. J., Oct 2013, In : Gastrointestinal Endoscopy. 78, 4, p. 617-622 6 p.

Research output: Contribution to journalArticle

Capsule Endoscopy
Mental Competency
Capsules
Endoscopy
Gastroenterology
10 Citations (Scopus)
Adenocarcinoma
Survival
Neoplasms
Esophagectomy
Liver
2012
12 Citations (Scopus)

Diagnosis and Management of Barrett's Esophagus

Nelsen, E. M., Hawes, R. H. & Iyer, P. G., Oct 2012, In : Surgical Clinics of North America. 92, 5, p. 1135-1154 20 p.

Research output: Contribution to journalArticle

Barrett Esophagus
Metaplasia
Adenocarcinoma
Esophagus
Endoscopy
35 Citations (Scopus)

Distribution of Body Fat and Its Influence on Esophageal Inflammation and Dysplasia in Patients With Barrett's Esophagus

Nelsen, E. M., Kirihara, Y., Takahashi, N., Shi, Q. D., Lewis, J. T., Namasivayam, V., Buttar, N. S., Dunagan, K. T. & Iyer, P. G., Jul 2012, In : Clinical Gastroenterology and Hepatology. 10, 7, p. 728-734 7 p.

Research output: Contribution to journalArticle

Body Fat Distribution
Barrett Esophagus
Inflammation
Esophagogastric Junction
Intra-Abdominal Fat
5 Citations (Scopus)

Double trouble: Two cases of squamous carcinoma arising from Barrett's dysplasia after endoscopic mucosal resection

Gorospe, E. C., Gupta, M., Iyer, P. G., Lewis, J. T. & Wang, K. K. N., Oct 2012, In : American Journal of Gastroenterology. 107, 10, p. 1595-1596 2 p.

Research output: Contribution to journalArticle

Esophagoscopy
Barrett Esophagus
Esophageal Neoplasms
Tumor Biomarkers
Squamous Cell Carcinoma
14 Citations (Scopus)

Endoscopic Ultrasound-Guided Abscess Drainage

Iyer, P. G. & Varadarajulu, S., Apr 1 2012, In : Gastrointestinal Endoscopy Clinics of North America. 22, 2, p. 281-290 10 p.

Research output: Contribution to journalReview article

Abscess
Drainage
Length of Stay
Abdominal Abscess
Indwelling Catheters
5 Citations (Scopus)
Barrett Esophagus
Adenocarcinoma
Metaplasia
Therapeutics
Ablation Techniques
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
49 Citations (Scopus)

Safety of Prior Endoscopic Mucosal Resection in Patients Receiving Radiofrequency Ablation of Barrett's Esophagus

Okoro, N. I., Tomizawa, Y., Dunagan, K. T., Lutzke, L. S., Wang, K. K. N. & Iyer, P. G., Feb 2012, In : Clinical Gastroenterology and Hepatology. 10, 2, p. 150-154 5 p.

Research output: Contribution to journalArticle

Barrett Esophagus
Safety
Pathologic Constriction
Metaplasia
Odds Ratio
20 Citations (Scopus)

Variation in age at cancer diagnosis in familial versus nonfamilial Barrett's esophagus

Chak, A., Chen, Y., Vengoechea, J., Canto, M. I., Elston, R., Falk, G. W., Grady, W. M., Guda, K., Kinnard, M., Markowitz, S., Mittal, S., Iyer, P. G., Shaheen, N., Willis, J. E. & Barnholtz-Sloan, J. S., Feb 1 2012, In : Cancer Epidemiology Biomarkers and Prevention. 21, 2, p. 376-383 8 p.

Research output: Contribution to journalArticle

Barrett Esophagus
Adenocarcinoma
Neoplasms
Tertiary Healthcare
Early Detection of Cancer
2011
14 Citations (Scopus)

Endoscopic Evaluation and Advanced Imaging of Barrett's Esophagus

Wang, K. K. N., Okoro, N., Iyer, P. G., WongKeeSong, M., Buttar, N. S. & Tian, J., Jan 2011, In : Gastrointestinal Endoscopy Clinics of North America. 21, 1, p. 39-51 13 p.

Research output: Contribution to journalArticle

Barrett Esophagus
Narrow Band Imaging
Neoplasms
Lasers
104 Citations (Scopus)

Epidemiology and natural history of intestinal metaplasia of the gastroesophageal junction and barrett's esophagus: A population-based study

Jung, K. W., Talley, N. J., Romero, Y., Katzka, D. A., Schleck, C. D., Zinsmeister, A. R., Dunagan, K. T., Lutzke, L. S., Wu, T. T., Wang, K. K. N., Frederickson, M., Geno, D. M., Locke, G. R. & Iyer, P. G., Aug 2011, In : American Journal of Gastroenterology. 106, 8, p. 1447-1455 9 p.

Research output: Contribution to journalArticle

Esophagogastric Junction
Barrett Esophagus
Metaplasia
Epidemiology
Population
17 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
17 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
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

Reply

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

Research output: Contribution to journalLetter

2010
735 Citations (Scopus)

Alcoholic liver disease

O'Shea, R. S., Dasarathy, S., McCullough, A. J., Shuhart, M. C., Davis, G. L., Franco, J., Harrison, S. A., Howell, C. D., Ling, S. C., Liu, L. U., Martin, P., Reau, N., Runyon, B. A., Talwalkar, J. A., Wong, J. B., Yim, C., Inadomi, J., Baroni, D., Bernstein, D., Brugge, W. & 25 others, Chang, L., Cunningham, J., Dendrinos, K. G., Edmundowicz, S., Ginsburg, P. M., Hornbuckle, K., Kefalas, C., Koch, T., Lehrer, J., Lembo, A., Mullick, T., O'Brien, J., Papp, J., Parkman, H., Perumalsamy, K. S., Iyer, P. G., Qureshi, W. A., Roach, A., Sampliner, R., Sonnenberg, A., Vargo, J., Vege, S. S., Vela, M., Zein, N. & Zuckerman, M. J., Jan 2010, In : Hepatology. 51, 1, p. 307-328 22 p.

Research output: Contribution to journalArticle

68 Citations (Scopus)

Depth of Submucosal Invasion Does Not Predict Lymph Node Metastasis and Survival of Patients With Esophageal Carcinoma

Badreddine, R. J., Iyer, P. G., Lewis, J. T., Lutzke, L. S., Borkenhagen, L. S., Dunagan, K. T. & Wang, K. K. N., Mar 2010, In : Clinical Gastroenterology and Hepatology. 8, 3, p. 248-253 6 p.

Research output: Contribution to journalArticle

Lymph Nodes
Neoplasm Metastasis
Carcinoma
Survival
Adenocarcinoma

Endoscopic mucosal resection

Iyer, P. G. & Namasivayam, V., Apr 1 2010, In : Techniques in Gastrointestinal Endoscopy. 12, 2, p. 108-115 8 p.

Research output: Contribution to journalArticle

Barrett Esophagus
Endoscopic Mucosal Resection
Neoplasms
Therapeutics
27 Citations (Scopus)
Upper Gastrointestinal Tract
Esophageal Neoplasms
Stomach Neoplasms
Dissection
Endoscopes
23 Citations (Scopus)
Neoplasms
Mental Competency
Patient Selection
Therapeutics
Direction compound
122 Citations (Scopus)

Endoscopic tri-modal imaging is more effective than standard endoscopy in identifying early-stage neoplasia in Barrett's esophagus

Curvers, W. L., Herrero, L. A., Wallace, M. B., Wong Kee Song, L. M., Ragunath, K., Wolfsen, H. C., Iyer, P. G., Wang, K. K. N., Subramanian, V., Weusten, B. L. A. M., Ten Kate, F. J. & Bergman, J. J. G. H. M., Oct 2010, In : Gastroenterology. 139, 4

Research output: Contribution to journalArticle

Barrett Esophagus
Endoscopy
Narrow Band Imaging
Neoplasms
Optical Imaging