Jerry Dang Lab | Cleveland Clinic Research

Principal Investigator

Jerry Dang, MD, PhD

Staff
Email: [email protected]
Location: Cleveland Clinic Main Campus

Research

Obesity has become one of the leading preventable causes of cancer, and weight-loss (bariatric) surgery is the most effective long-term treatment we have for it. Patients who undergo these operations go on to develop far fewer obesity-related cancers — liver cancer risk falls by roughly half, and ovarian cancer risk by even more. Why this happens is largely unknown, and explaining it is the central goal of the Dang Lab.

We believe much of the answer lies in the gut. Bariatric surgery changes far more than how much a person eats: it rewires how the intestine, its hormones, and the trillions of bacteria living inside it signal to the rest of the body. Our laboratory follows those signals from the gut to fat tissue, to the immune system, and finally into a tumor. Using animal models in which we perform the same operations our patients receive, we have found that sleeve gastrectomy reshapes the gut bacterial community, quiets inflammation, and switches off a specific tumor signal that pulls harmful immune cells into liver cancers — even in animals that regain the weight they lost. That last detail matters, because it suggests surgery is doing something beyond weight loss alone.

That distinction has become urgent. New weight-loss medications are now used by millions of people, and we do not yet know whether they deliver everything surgery does. We test the two head-to-head — in cancer models in the laboratory, and in patients with obesity-related heart failure, where we measure how much exercise capacity and heart function recover after surgery versus medication.

The lab also asks whether gut bacteria can be harnessed to treat gastroparesis, a disabling condition — common in people with diabetes — in which the stomach empties far too slowly.

Our goal is to identify which gut signals do the protective work, so the benefits of surgery can one day reach patients who cannot or should not have an operation.

Biography

Jerry Dang, MD, PhD, FRCSC, FACS, FASMBS, is a bariatric, foregut, and flexible endoscopic surgeon at Cleveland Clinic and Associate Professor of Surgery at the Cleveland Clinic Lerner College of Medicine of Case Western Reserve University. He is staff in the Department of Microbial Sciences in Health within Cleveland Clinic Research, where he leads a laboratory studying how metabolic surgery and the gut microbiome reprogram host immunity and metabolism to suppress obesity-driven cancer.

Dr. Dang completed a Bachelor of Science in Mechanical Engineering at the University of Calgary and worked as a production and project engineer before entering medicine. He earned his medical degree and completed general surgery residency at the University of Alberta, where he also completed the Royal College Clinician Investigator Program and a PhD in Surgery, with a thesis on the Intestinal Physiology of Bariatric Surgery. He then completed fellowship training in Advanced Laparoscopic Surgery and Flexible Surgical Endoscopy at Cleveland Clinic's Digestive Disease Institute and joined the staff in 2023. He is board certified by the American Board of Surgery and the Royal College of Physicians and Surgeons of Canada.

Clinically, he specializes in primary and revisional bariatric surgery, complex foregut and hernia reconstruction, and therapeutic endoscopy, including gastric per-oral endoscopic myotomy (G-POEM) for gastroparesis.

Dr. Dang has authored more than 150 peer-reviewed publications and several textbook chapters, serves on multiple editorial boards, and chairs the Emerging Technology and Procedures Committee of the American Society for Metabolic and Bariatric Surgery. His research has been supported by the ASMBS, SAGES, the Central Surgical Association, Alberta Innovates, the Canadian Institutes of Health Research, and Cleveland Clinic's Digestive Disease Institute

Education & Professional Highlights

Education and Training

PhD, Surgery, University of Alberta, 2022 — Thesis: The Intestinal Physiology of Bariatric Surgery
MD, University of Alberta, 2014
BSc, Mechanical Engineering, University of Calgary, 2007 •
Advanced Laparoscopic Surgery and Flexible Surgical Endoscopy Fellowship, Digestive Disease Institute, Cleveland Clinic, 2022–2023
General Surgery Residency and Clinician Investigator Program, University of Alberta, 2014–2022
Board certified in General Surgery — American Board of Surgery and Royal College of Physicians and Surgeons of Canada, 2022

Honors

Fellow, American College of Surgeons and American Society for Metabolic and Bariatric Surgery, 2025
Fellow, Royal College of Surgeons of Canada
Alberta Innovates Clinician Fellowship, 2019–2022
CIHR Frederick Banting and Charles Best Canada Graduate Scholarship, 2018; Vanier Canada Graduate Scholarship nominee, 2019
ASMBS International Abstract Award and SAGES Researcher in Training Award, 2022

Research Funding

Digestive Disease Institute Chief's Innovation and Research Award, PI, 2026–2027 (two awards) — Concurrent Sleeve Gastrectomy at Liver Transplantation to Reduce Hepatocellular Carcinoma Recurrence; Hemodynamic and Functional Recovery in HFpEF
ASMBS Research Grant, PI, 2024–2026 and 2018–2020 — bariatric surgery, hepatocellular carcinoma, and the gut microbiome
Central Surgical Association Turcotte Award, PI, 2024–2025 — Effect of Bariatric Surgery on Ovarian Cancer Biology
SAGES Research Grant, PI, 2017–2020 — The Microbiology of Bariatric Surgery

Leadership and Service

Chair, Emerging Technology and Procedures Committee, ASMBS, 2025–present
Secretary, ASMBS Ohio & Kentucky Chapter, 2026–present
Member, Metabolic and Bariatric Surgery Committee and Flexible Endoscopy Committee, SAGES, 2022–present
Clinical Practice Updates Subcommittee Lead, Canadian Association of General Surgeons
Editorial Board: MBS Digest; Scientific Reports; Annals of Laparoscopic and Endoscopic Surgery; Mini-invasive Surgery
Course Co-Director, Artificial Intelligence in Bariatric Surgery and Obesity Care, ASMBS Annual Meeting, 2025; Invited Faculty, American College of Surgeons Clinical Congress, 2024 and 2025

Research

The Dang Lab, in Cleveland Clinic Research (Microbial Sciences in Health), asks how metabolic surgery and the gut microbiome reprogram host immunity, metabolism, and end-organ function — and how much of that benefit weight loss alone reproduces.

Bariatric surgery and hepatocellular carcinoma. In a DMBA/high-fat-diet model with tumors detected by ultrasound before surgery, sleeve gastrectomy (SG) reduces tumor multiplicity and normalizes liver weight despite later weight regain. Paired metagenomics with cecal, adipose, non-tumor liver, and tumor transcriptomics converge on an SG-associated microbial program (glycan biosynthesis, inositol degradation) tracking with lower cecal IL-6–JAK–STAT3 and PI3K–mTOR signaling, reduced adipose inflammatory and coagulation tone, and suppressed tumor CCL2/MCP-1. Current work tests temporal order, microbiome sufficiency by FMT, and whether the CCL2/CCR2 axis is a required terminal effector (R01 in preparation).

Weight loss versus surgery in ovarian cancer. In diet-induced obese mice bearing luciferase-tagged ID8-Trp53-/- tumors, SG and Roux-en-Y gastric bypass are benchmarked by longitudinal bioluminescence–CT against a graded incretin series (semaglutide, tirzepatide, retatrutide) and weight-matched pair-feeding, quantifying surgery-specific effects as deviation from the fitted weight-loss–response curve.

Microbiome modulation in diabetic gastroparesis. A factorial FMT x fermentable-fiber design tests whether SCFA-driven microbial shifts restore gastric emptying and neuroimmune integrity (ICC/c-Kit, nNOS, CD206+/HO-1+ muscularis macrophages).

Clinical translation. A prospective HFpEF cohort phenotypes cardiopulmonary and structural recovery by CPET, strain echocardiography, and DXA at baseline, 10% weight loss, and nadir, comparing surgery with incretin pharmacotherapy. A second pilot tests concurrent sleeve gastrectomy at liver transplantation. Registry and AI studies run in parallel.

Our Team

Publications

Selected Publications

View publications for Jerry Dang, MD, PhD
(Disclaimer: This search is powered by PubMed, a service of the U.S. National Library of Medicine. PubMed is a third-party website with no affiliation with Cleveland Clinic.)

Peer-Reviewed Publications

Wills MV, Zhu X, Elamin D, Corcelles R, Kroh M, Dang J, Strong A, Navarrete S, Mocanu V. Declining Bariatric Surgery Volumes and Shifting Practice Patterns: A Five-Year Analysis of Over One Million Procedures. Obesity Surgery. 2026 Jul 15.
Gillikin A, Lee Y, Varney C, Dang JT, Tsung A, Nimeri A, Shin TH. Weight loss and cardiovascular outcomes with incretin-based therapies after metabolic and bariatric surgery: a nationwide cohort study. eClinicalMedicine. 1 Jul 2026.
Dang J, Lee Y, Wills MV, Brown JM, Madsen K, Mocanu V. The gut microbiome in surgical oncology: mechanisms, perioperative outcomes, and therapeutic opportunities. British Journal of Surgery. 29 Jun 2026.
Elamin D, Mocanu V, Wills MV, Strong A, Navarrete S, Corcelles R, Kroh M, Dang J. 30-Day Outcomes of Simultaneous Sleeve Gastrectomy and Kidney Transplantation: An Analysis from the Metabolic and Bariatric Surgery Accreditation and Quality Improvement Program (MBSAQIP) Database. Obesity Surgery. 2026 Jun 27:1-7.
Qadir MS, Syed A, Kaul R, Chatterjee A, Dang J, Siddiki H. Endoscopic retrieval of a migrated plastic pigtail stent in a patient with gastric bypass surgery using novel endoscopic cutting device. ACG Case Reports Journal. 2026 Jun 13.
Gillikin AP, Rabinovich EP, Barajas-Gamboa JS, Mocanu V, Dang JT, Carter C, Hallowell P, Schirmer B, Shin TH. Post-discharge VTE prophylaxis after bariatric surgery: balancing bleeding risk and thrombosis prevention in 275,843 patients. Surgical Endoscopy. 2026 Jun 8.
Wills MV, Jimenez J, Yañez M, Paravic N, Seguel A, Carmona C, Mendez I, Balmaceda N, Dang J, Navarrete S, Kroh M, Strong AT. Augmented reality and 3D visualization integrated with magnetic-assisted robotic procedures: first clinical cases using combined cutting-edge technologies. Surgical Endoscopy. 2026 May 11.
Brar K, Chattha I, Gobraeil S, Mocanu V, Corcelles R, Kroh M, Shin T, Dang JT, Lee Y. Applications of artificial intelligence along the perioperative pathway in metabolic and bariatric surgery. Surgery for Obesity and Related Diseases. 2026 May 8.
Zhu X, Mocanu V, Kachornvitaya P, Wills MV, Strong A, Navarrete S, Lee Y, Barajas-Gamboa JS, Corcelles R, Dang J, Kroh M. Concurrent stricturoplasty with lumen-apposing metal stents for gastrojejunal strictures after Roux-en-Y gastric bypass. Surgical Endoscopy. 2026 Apr 29.
Conner A, Wills M, Navarrete S, Bechara R, Kidane B, Dang J, Raja S, Kroh M, Hong D, Lee Y. Modern treatment for achalasia: endoscopic and surgical therapies. British Journal of Surgery. 2026 Apr 27
Zhu X, Wang Q, Mocanu V, Kachornvitaya P, Wills MV, Strong A, Navarrete S, Lee Y, Barajas-Gamboa JS, Corcelles R, Kroh M, Dang J. Long-term safety and disease-modifying potential of metabolic and bariatric surgery in patients with systemic lupus erythematosus. Surgical Endoscopy. 2026 Mar 30.
Barajas-Gamboa JS, Restrepo-Rodas G, Mocanu V, Wills MV, Shin TH, Kachornvitaya P, Romero-Velez G, Zhu X, Strong AT, Navarrete S, Corcelles R, Guerron AD, Rodriguez J, Kroh M, Dang JT. Adverse Outcomes in Patients on Chronic Anticoagulation Therapy Undergoing Sleeve Gastrectomy Conversions: Analysis of 30,664 Patients from the MBSAQIP Database. Obesity Surgery. 2026 Mar 25.
Mocanu V, Wills MV, Navarrete S Jr, Kachornvitaya P, Zhu X, Strong A, Kroh M, Dang J, Navarrete S. Robotic Primary Roux-En-Y Gastric Bypass is independently associated with increased 30-day mortality: A 2023 MBSAQIP analysis of 50,365 patients. Surgery for Obesity and Related Diseases. 2026 Mar 20.
Kachornvitaya P, Wills MV, Mohamed BK, Mocanu V, Barajas-Gamboa JS, Zhu X, Lee Y, Corcelles R, Strong AT, Udomsawaengsup S, Navarrete S, Dang J, Kroh M. Achalasia and Esophageal Motility Disorders in the Bariatric Surgery Population: A Retrospective Descriptive Series. Obesity Surgery. 2026 Mar 18:1-1.
Wills MV, Lee S, Mocanu V, Lee Y, Kachornvitaya P, Zhu X, Alfaris N, Andromalos L, Apovian C, Behrens E, Birk D, Busetto L, Courcoulas A, Cummings D, Faria SL, Ghanem O, Han SM, Karmali S, Kaplan L, Kow L, Le Roux C, Mahawar K, Gawdat K, Munoz R, Musella M, Nimeri A, O'Kane M, Palermo M, Ponce de Leon Ballesteros G, Salminen P, Sullivan S, Udomsawaengsup S, Tewksbury C, Vidal J, Wilding J, Dang JT, Strong AT, Navarrete S, Zundel N, Kermansaravi M, Butsch S, Kroh M, Corcelles R. International Expert Consensus on Definitions and Management of Weight Recurrence and Suboptimal Response After Metabolic and Bariatric Surgery: A Delphi Study. Surgery for Obesity and Related Diseases. 2026 Mar 17.
Kachornvitaya P, Zhu X, Bardaro SJ, Mocanu V, Wills MV, Barajas-Gamboa JS, Lee Y, Corcelles R, Strong AT, Navarrete S, Udomsawaengsup S, Kroh M, Dang J. Impact of Vitamin D Deficiency on Bone Health After Roux-en-Y Gastric Bypass and Sleeve Gastrectomy: A Large Propensity-Matched Cohort Study. Surgery for Obesity and Related Diseases. 2026 Mar 16.
Kachornvitaya P, Wills MV, Barajas-Gamboa JS, Zhu X, Lee Y, Udomsawaengsup S, Navarrete S, Corcelles R, Strong A, Kroh M, Dang J, Mocanu V. Evaluating Trends and Outcomes between Robotic and Laparoscopic Bariatric Surgery in Patients with BMI ≥60 kg/m2: An MBSAQIP Analysis of 32,295 Cases. Surgical Endoscopy. 2026 Mar 12.
Hage K, Wills MV, Mocanu V, Barajas-Gamboa JS, Kachornvitaya P, Zhu X, Ghanem OM, Corcelles R, Strong AT, Navarrete S, Kroh M, Dang JT. Characterization of Concurrent Bariatric Surgery and Abdominal Wall Hernia Repair Prevalence and Outcomes: A Multi-centered Study of 180,544 MBSAQIP Patients. Surgery for Obesity and Related Diseases. 2026 Feb 19.
Escobedo B, Bauzon J, Dang JT, Kroh M, Romero-Velez G. Comparison of robotic and laparoscopic surgery trials in 2025: a cross-sectional analysis of the national clinical trials registry. Annals of Laparoscopic and Endoscopic Surgery. 2026 Jan 30.
Barajas-Gamboa JS, Mocanu V, Wills MV, Restrepo-Rodas G, Shin TH, Romero-Velez G, Allemang M, Strong AT, Navarrete S, Corcelles R, Guerron AD, Rodriguez J, Kroh M, Dang JT. Transversus abdominis plane blocks during primary bariatric surgery reduce length of stay without increasing complication rates: an MBSAQIP analysis of 511,981 patients. Surgery for Obesity and Related Diseases. 2026 Jan 29.
Barajas-Gamboa JS, Mocanu V, Khoury K, Wills MV, Kachornvitaya P, Lee S, Shin TH, Allemang M, Strong AT, Navarrete S, Corcelles R, Rodriguez J, Kroh M, Dang JT. Heart Failure Independently Predicts Higher Morbidity and Mortality Following Bariatric Surgery: Analysis of 180,544 MBSAQIP Cases. Obesity Surgery. 2026 Jan 9.
Barajas-Gamboa JS, Mocanu V, Wills MV, Restrepo-Rodas G, Kachornvitaya P, Zhu X, Lee S, Shin TH, Romero-Velez G, Allemang M, Strong AT, Corcelles R, Guerron AD, Rodriguez J, Kroh M, Dang JT, Navarrete S. Left ventricular assist devices triple the risk of serious complications and longer hospital stay following bariatric surgery: a national analysis of 180,544 Metabolic and Bariatric Surgery Accreditation and Quality Improvement Program cases. Surgery for Obesity and Related Diseases. 2025 Dec 31.
Wills MV, Mocanu V, Elamin D, Kachornvitaya P, Barajas-Gamboa JS, Restrepo-Rodas G, Aulestia J, Corcelles R, Allemang M, Strong A, Navarrete S, Kroh M, Dang J. Characterizing liver disease in patients undergoing bariatric surgery: Prevalence and outcomes of 180,544 cases. Surgery. 2025 Dec 12.
Kahyaoglu M, Wills MV, Dang JT. A narrative review of gastroparesis in obesity: diagnostic challenges, treatment considerations, and metabolic implications. Annals of Laparoscopic and Endoscopic Surgery. Accepted for publication.
La Riva A, Perez-Soto RH, Bauzon J, Barajas-Gamboa JS, Lee S, Navarrete S, Corcelles R, Strong A, Dang J, Kroh M, Romero-Velez G. A decade-long nationwide analysis of surgical management of adhesive small bowel obstruction: Open vs. laparoscopic approach. Surgical Endoscopy. 2025 Dec 11:1-7.
Barajas-Gamboa JS, Mocanu V, Restrepo-Rodas G, Wills MV, Kachornvitaya P, Lee S, Shin TH, Zhu X, Allemang M, Strong AT, Navarrete S, Corcelles R, Guerron AD, Rodriguez J, Kroh M, Dang JT. Robotic RYGB is Associated with Increased Risk of Early Postoperative Small Bowel Obstruction: an Analysis of 188,213 MBSAQIP Cases. Obesity Surgery. 2025 Dec 11.
Kachornvitaya P, Mocanu V, Wills MV, Barajas-Gamboa JS, Navarrete S, Corcelles R, Strong A, Udomsawaengsup S, Kroh M, Dang J. Roux-en-Y Gastric Bypass and Sleeve Gastrectomy Risk-Adjusted Safety Profiles after Previous Fundoplication: A 499-Patient MBSAQIP Analysis. Obesity Surgery. 2025 Nov 22.
Ozmen BB, Berber I, Dang JT, Schwarz GS, Kroh M. Development of a Bariatric Surgery Specific Artificial Intelligence Large Language Model: BariatricSurgeryGPT. Surgical Innovation. 2025 Nov 19.
Kachornvitaya P, Mocanu V, Wills MV, Barajas-Gamboa JS, Zhu X, Corcelles R, Strong A, Udomsawaengsup S, Kroh M, Dang J, Navarrete S. Outcomes of Re-Sleeve Gastrectomy after Primary Sleeve Gastrectomy: A MBSAQIP analysis of perioperative risk. Surgery for Obesity and Related Diseases. 2025 Nov 1.
Wills MV, Mocanu V, Lee S, Navarrete S, Rodriguez J, Strong AT, Dang J, Allemang M, Kroh M. First description of redo gastric per-oral endoscopic myotomy (G-POEM) for refractory gastroparesis: technical conduct and outcomes. Journal of Laparoendoscopic & Advanced Surgical Techniques. 2025 Nov 1.
Zhu X, Wang Q, Mocanu V, Kachornvitaya P, Wills MV, Strong A, Navarrete S, Barajas-Gamboa JS, Corcelles R, Kroh M, Dang JT. Evaluating the long-term safety and disease-modifying potential of metabolic surgery in patients with rheumatoid arthritis: a TriNetX cohort study. Surgery for Obesity and Related Diseases. 2025 Oct 10.
Barajas-Gamboa JS, Khoury K, Mocanu V, Wills MV, Shin TH, Romero-Velez G, Allemang M, Strong AT, Navarrete S, Corcelles R, Guerron AD, Rodriguez J, Kroh M, Dang JT. Concomitant liver biopsy during bariatric surgery: no increase in major complications or readmissions but associated with higher transfusion requirements - an analysis of the MBSAQIP database. Obesity Surgery. 2025 Sep 25.
Wills MV, Loesch J, Barajas-Gamboa J, Restrepo-Rodas G, Kachornvitaya P, Strong A, Navarrete S, Dang J, Kroh M, Mocanu V. Predictors of dehydration requiring outpatient intervention following bariatric surgery. Surgery for Obesity and Related Diseases. 2025 Aug 18.
Skulsky S, Al-Sukhni E, Villiard R, Li T, Li L, Dang J. Canadian considerations on updating the age of initiation for colorectal cancer screening in average risk individuals. Canadian Journal of Surgery. 2025 Aug 8.
Elamin D, Wills MV, Aulestia J, Mocanu V, Strong AT, Dang J, Feng X, Kroh M, Corcelles R, Navarrete S. The effect of limb length ratio on Roux-en-Y gastric bypass outcomes (CLIMB-1). Journal of Clinical Medicine. 2025 Jul 25.
Kachornvitaya P, Mocanu V, Wills MV, Barajas-Gamboa JS, Navarrete S, Corcelles R, Strong A, Kroh M, Dang J. Trends and short-term outcomes of metabolic and bariatric surgery in adolescents with BMI ≥ 50 kg/m2: a MBSAQIP database study. Obesity Surgery. 19 Jul 2025.
Wills MV, Barajas-Gamboa JS, Mocanu V, Conner A, Brown J, Restrepo-Rodas G, Lee S, Navarrete S, Corcelles R, Allemang M, Rodriguez J, Strong A, Dang J, Kroh M. Long term outcomes of laparoscopic duodenojejunostomy for superior mesenteric artery syndrome. Surgical Endoscopy. 2025 Jun 27.
Shin TH, Mocanu V, Hui D, Matthews L, Barajas-Gamboa JS, Wills M, Carter C, Hallowell P, Schirmer B, Dang J. Evaluating safety and outcomes of concurrent cholecystectomy in revisional and conversion bariatric surgery: an MBSAQIP case cohort analysis of 72,189 patients. Surgery for Obesity and Related Diseases. 2025 Jun 7.
Shin T, Medhati P, Dang JT, Sheu EG, Tavakkoli A, Nimeri AA. The limited utility of preoperative hypoalbuminemia as an independent predictor of post-conversion and revisional bariatric surgery outcomes: an MBSAQIP registry analysis. Journal of the American College of Surgeons. 2025 Jun 1.
Barajas-Gamboa JS, Shin TH, Romero-Velez G, Strong AT, Navarrete S, Pantoja JP, Guerron AD, Rodriguez J, Corcelles R, Kroh M, Dang JT. Indications and outcomes of laparoscopic versus robotic conversional bariatric surgery: an MBSAQIP study. Surgery for Obesity and Related Diseases. 2025 May 7.
Mocanu V, Jordan E, Dang J, Shin T. Comparing endoscopic sleeve gastroplasty (ESG) and laparoscopic sleeve gastrectomy (LSG) 30-day outcomes and healthcare utilization: a multi-centered retrospective cohort study of 506,597 patients. Obesity Surgery. 2025 Apr 28.
Barajas-Gamboa JS, Restrepo-Rodas G, Mocanu V, Shin T, Romero-Velez G, Strong AT, Navarrete S, Rodriguez J, Corcelles R, Kroh M, Dang J. Evaluating postoperative conversion trends in the elderly: an MBSAQIP-based analysis of bariatric surgery outcomes. Surgery for Obesity and Related Diseases. 2025 Apr 14.
Kermansaravi M, Chiappetta S, Shahabi Shahmiri S, Varas J, Parmar C, Lee Y, Dang JT, Shabbir A, Hashimoto D, Davarpanah Jazi AH, Meireles OR, Aarts E, Almomani H, Alqahtani A, Aminian A, Behrens E, Birk D, Cantu FJ, Cohen RV, De Luca M, Di Lorenzo N, Dillemans B, ElFawal MH, Felsenreich DM, Gagner M, Galvan HG, Galvani C, Gawdat K, Ghanem OM, Haddad A, Himpens J, Kasama K, Kassir R, Khoursheed M, Khwaja H, Kow L, Lainas P, Lakdawala M, Luengas Tello R, Mahawar K, Marchesini C, Masrur MA, Meza C, Musella M, Nimeri A, Noel P, Palermo M, Ponce J, Quiróz-Guadarrama CD, Rheinwalt KP, Rodriguez JG, Saber AA, Salminen P, Stenberg E, Stier CK, Suter M, Szomstein S, Taskin HE, Vilallonga R, Wafa A, Yang W, Zorron R, Torres A, Kroh M, Zundel N, Pazouki A. International expert consensus on the current status and future prospects of artificial intelligence in metabolic and bariatric surgery. Scientific Reports. 2025 Mar 18.
Wills MV, Chaivanijchaya K, Barajas-Gamboa JS, Restrepo G, Mocanu V, Farah A, Lee S, Navarrete S, Rodriguez J, Allemang M, Corcelles R, Kroh M, Strong AT, Dang J. Evaluating the impact of the COVID-19 pandemic on outcomes of conversion and revisional bariatric surgery: an MBSAQIP study. Surgery for Obesity and Related Diseases. 2025 Mar 14.
Wills MV, Farah A, Moussally M, Chaivanijchaya K, Lee S, Barajas-Gamboa JS, Dang J, Strong A, Navarrete S, Kroh M, Allemang M. Long term outcomes of gastric per oral endoscopic myotomy (GPOEM) in patients with gastroparesis. The American Journal of Surgery. 2025 Jan 15.
Fares S, Barajas-Gamboa JS, Zhan K, Dang JT, Mocanu V, Wills MV, Diaz Del Gobbo G, Abril C, Pantoja JP, Guerron AD, Raza J, Corcelles R, Rodriguez J, Kroh M. Perioperative outcomes in patients with and without chronic preoperative therapeutic anticoagulation undergoing metabolic surgery at an academic medical center. Journal of Clinical Medicine. 2025 Jan 10.
Wills MV, Barajas-Gamboa JS, Romero-Velez G, Strong A, Navarrete S, Corcelles R, Abril C, Pantoja JP, Guerron AD, Rodriguez J, Kroh M, Dang J. Indications and outcomes of endoscopic gastric pouch plications after bariatric surgery: an analysis of the Metabolic and Bariatric Surgery Accreditation and Quality Improvement Program (MBSAQIP) database. Obesity Surgery. 2025 Feb 18.
Barajas-Gamboa J, Khan MS, Romero-Velez G, Dang JT, Diaz Del Gobbo G, Abdallah M, Pantoja J, Raza J, Abril C, Guerron A, Lee-St John T, Corcelles R, Kroh M, Rodriguez J. Impact of the COVID-19 lockdown on primary bariatric surgery: a comparative study of weight loss trajectories and perioperative outcomes. Journal of Laparoendoscopic & Advanced Surgical Techniques. 2024 Dec 1.
Lee S, Dang J, Chaivanijchaya K, Farah A, Kroh M. Endoscopic management of complications after sleeve gastrectomy: a narrative review. Mini-invasive Surgery. 2024 Sep 12.
Barajas-Gamboa JS, Ihsan Khan MS, Mocanu V, Dang JT, Romero-Velez G, Lee St-John T, Diaz Del Gobbo G, Guerron AD, Pantoja JP, Abril C, Raza J. Pain Assessment and Analgesic Requirements after Sleeve Gastrectomy: A Comparison Study of Robotic versus Laparoscopic Approaches. Journal of Clinical Medicine. 2024 Aug 30.
Au K, Zheng M-H, Lee W-J, Ghanem OM, Mahawni K, Shabbir A, le Roux CW, Torgher G, Byrne CD, Yilmaz Y, Valenti L, Sebastiani G, Tresa-Panackel L, Xiaoyan Wang H, Sakairi N, Galvao Neto M, Kermansaravi M, Kow L, Seki Y, Thum KW, Dang J, Cohen RV, Stier C, Al-Sabah S, Angrisani L, Chetan Parmar M, Tang W; on behalf of Global Obesity Collaborative. Resmetirom and Metabolic Dysfunction-Associated Steatohepatitis: Perspectives on Multidisciplinary Management from Global Healthcare Professionals. Curr Obes Rep. 2024 Aug 7.
Restrepo-Rodas G, Barajas-Gamboa JS, Dang JT, Piechowska-Jóźwiak M, Khan M, Diaz Del Gobbo G, Abdallah M, Moreno C, Abril C, Pantoja JP, Guerron AD, Corcelles R, Kroh M, Rodriguez J. 7-Year Experience of Intramural Surgery in the Middle East: A Safety and Feasibility Analysis. Journal of Clinical Medicine. 2024 Jul 8.
Lee Y, Hircock C, Dang J, Yung J, Elnahas A, Khamar J, Vergis A, Tahir U, Hardy K, Samarasinghe Y, Gill R, Gu J, Pescarus R, Biertho L, Lam E, Neville A, Zevin B, Ellsmere J, Karmali S, Jackson T, Okrainec A, Doumouras A, Hong D. Assessment of Guidelines for Bariatric and Metabolic Surgery: A Systematic Review and Evaluation Using Appraisal of Guidelines for Research and Evaluation II (AGREE II). International Journal of Obesity. 2024 Jun 18.
Barajas-Gamboa J, Duran V, Romero-Velez G, Mocanu V, Lee Y, Corcelles R, Allemang M, Strong AT, Navarrete S, Rodriguez J, Kroh M, Dang JT. Prevalence, Indications, and Complications of Conversional Surgery After Vertical Banded Gastroplasty: A MBSAQIP Analysis. Obesity Surgery. 2024 Jun 11.
Shin TH, Medhati P, Dang J, Wasden K, Sheu EG, Tavakkoli A. From Bands to Bypasses: Navigating Safety of Band Conversions to Roux-en-Y Gastric Bypass and Single Anastomosis Duodenoileostomy Versus Sleeve Gastrectomy. Obesity Surgery. 2024 Jun 5.
Barajas-Gamboa J, Emilio Serra F, Romero-Velez G, Dang JT, Del Gobbo GD, Abdallah M, Abril C, Raza J, Guerron AD, Corcelles R, Kroh M, Rodriguez J, Pantoja JP. Bariatric Surgical Outcomes in the Elderly: A Comparison Study Between Primary and Revisional Procedures in the United Arab Emirates. Obesity Surgery. 31 May 2024.
Lee Y, Tessier L, Brar K, Malone S, Jin D, McKechnie T, Jung JJ, Kroh M, Dang JT. Performance of Artificial Intelligence in Bariatric Surgery: Comparative Analysis of ChatGPT-4, Bing, and Bard in The ASMBS Textbook of Bariatric Surgery Questions. Surgery for Obesity and Related Diseases. 2024 May 8.
Shin T, Dang JT, Howell M, Husain FA, Ghanem OM, Bittner J, Eckhouse S, Fearing N, Elli E, Hussain M, Galvani C, Johnson S, Chand B, Pandya Y, Rogers A, Kroh M, Kurian M. THE SAGES MASTERS Program Bariatric Surgery Pathway selects 10 seminal publications on revisional bariatrics. Surgical Endoscopy. 2024 Mar 30.
Barajas-Gamboa J, Dicicco J, Dang JT, Del Gobbo GD, Raza JA, Abril C, Guerron AD, Pantoja JP, Hegazin SB, Corcelles R, Rodriguez J, Kroh M. Bariatric Surgery Outcomes in Patients with Severe Obesity Compared to Patients with Non-Severe Obesity at a New Institution in the United Arab Emirates. Journal of Clinical Medicine. 2024 Mar 26.
Lee Y, Shin T, Tessier L, Javidan A, Jung J, Hong D, Strong AT, Malone S, Jin D, Kroh M, Dang JT. Harnessing Artificial Intelligence in Bariatric Surgery: Comparative Analysis of ChatGPT-4, Bing, and Bard in Generating Clinician-Level Bariatric Surgery Recommendations. Surgery for Obesity and Related Diseases. 2024 Mar 24.
Barajas-Gamboa J, Khan SIK, Dang JT, Romero-Velez G, Del Gobbo GD, Abdallah M, Pantoja JP, Abril C, Guerron AD, Lee-St John T, Corcelles R, Rodriguez J, Kroh M, Uy-Kroh MJ. Effects of Post-Surgical Pregnancy on Weight Loss Trajectories After Bariatric Surgery: Are Initial Weight and Age Prognostic Factors? Journal of Clinical Medicine. 2024 Feb 23.
Dang JT, Hider AM, Barajas-Gamboa JS, Mocanu V, Shin T, Romero-Velez G, Lee Y, Navarrete S, Rodriguez J, Kroh M. Safety of Limb Lengthening after Roux-en-Y Gastric Bypass: An Analysis of the MBSAQIP Database. Surgery for Obesity and Related Diseases. 2024 Jan 6.
Vaughan T, Romero-Velez G, Barajas-Gamboa J, Dang JT, Rodriguez J, Navarrete S, Strong AT, Rosenthal R, Corcelles R, Kroh M. Hiatal Hernia Repair After Previous Laparoscopic Roux-en-Y Gastric Bypass. Surgery for Obesity and Related Diseases. 2023 Nov 25.
Dang JT, Hage K, Corbett J, Mosleh KA, Kroh M, Ghanem OM, Clapp B. Third Time’s A Charm – Band to Sleeve to Bypass. Surgical Endoscopy. 2023 Nov 17.
MacVicar S, Mocanu V, Jogiat U, Verhoeff K, Dang J, Birch DW, Karmali S, Switzer N. Revisional Bariatric Surgery for Gastroesophageal Reflux Disease: Characterizing Patient and Procedural Factors and 30-Day Outcomes for a Retrospective Cohort of 4412 Patients. Surgical Endoscopy. 2023 Oct 31.
Romero-Velez G, Dang J, Barajas-Gamboa J, John TL, Strong AT, Salvador N, Corcelles R, Rodriguez J, Fares M, Kroh M. Machine Learning Prediction of Major Adverse Cardiac Events after Elective Bariatric Surgery. Surgical Endoscopy. 2023 Sept 25.
Hage K, Barajas-Gamboa J, Romero-Velez G, Allemang M, Navarrete S, Corcelles R, Rodriguez J, Ghanem OM, Kroh M, Dang JT. Revisional Procedures After Sleeve Gastrectomy for Weight Recurrence or Inadequate Weight Loss: An Analysis of the MBSAQIP Database. Journal of Clinical Medicine. 2023 Sep 15.
Barajas-Gamboa J, Moon S, Romero-Velez G, Strong AT, Allemang M, Salvador N, Corcelles R, Rodriguez J, Kroh M, Dang JT. Primary Single Anastomosis Duodeno-Ileal Bypass with Sleeve Gastrectomy (SADI-S) Versus Sleeve Gastrectomy to SADI Conversions: A Comparison Study of Prevalence and Safety. Surgical Endoscopy. 2023 Jul 27.
Wilson H, Verhoeff V, Dang J, Kung J, Switzer N, Birch DW, Madsen K, Karmali S, Mocanu V. Safety and Outcomes of Bariatric Surgery in Patients With Inflammatory Bowel Disease: A Systematic Review and Meta-Analysis. Foregut. 13 Jul 2023.
Jogiat U, Wilson H, Bedard A, Blakely P, Dang J, Sun W, Karmali S, Bedard ELR, Wong C. Optimizing Management for Early-Stage Esophageal Adenocarcinoma: Longitudinal Results from a Multidisciplinary Program. Surgical Endoscopy. 11 Jul 2023.
Lee Y, Kazi T, Dang J, Kroh M, Doumouras A, Hong D. Financial toxicity risk among patients with gastric banding complications in the United States: Analysis of the National Inpatient Sample. Surgical Endoscopy. 9 Jul 2023.
Verhoeff K, Mocanu V, Dang J, Birch DW, Karmali S, Switzer N. Lasting impact of COVID-19 on bariatric surgery delivery in North-America: A retrospective international cohort study of 349,209 patients in 902 centers. Surgeries. 7 Jul 2023.
Lee Y, Tahir U, Tessier L, Yang K, Hassan T, Dang J, Kroh M, Hong D. Long-term outcomes following Dor, Toupet, and Nissen fundoplication: a network meta-analysis of randomized controlled trials. Surgical Endoscopy. 2023 Jun 12.
Romero-Velez G, Leon-Ballesteros GP, Al Zubaidi M, Barajas-Gamboa JS, Dang J, Corcelles R, Strong AT, Navarrete S, Kroh M. Presence of SARS-CoV-2 in Abdominal Tissues and Biologic Fluids During Abdominal Surgery: A Systematic Review. Surgical Endoscopy. 23 May 2023.
McLennan S, Verhoeff K, Purich K, Dang JT, Kung JY, Mocanu V. Duodenal-Jejunal Bypass Liners are superior to Optimal Medical Management in Ameliorating Metabolic Dysfunction: A Systematic Review and Meta-Analysis. Obesity Reviews. 2023 May 8.
Dang JT, Clapp B, Ahmad M, Ghanem OM, Parmar C, Kroh M, English W. One vs two-stage conversions of adjustable gastric bands: An analysis of the MBSAQIP database. Surgery for Obesity and Related Diseases. 2023 Mar 16.
Lee Y, Tessier L, Jong A, Padoan A, Samarasinghe Y, McKechnie T, Molnar A, Walsh M, Doumouras A, Dang J, Kroh M, Hong D. The effect of chronic kidney disease or end-stage kidney disease on perioperative outcomes and healthcare utilization in patients undergoing bariatric surgery. Obesity Surgery. 2023 Mar 15.
Dang JT, Vaughan T, Mocanu V, Mubashir H, Barajas-Gamboa JS, Corcelles Codina R, Rodriguez J, Karmali S, Kroh M. Conversion of Sleeve Gastrectomy to Roux-en-Y Gastric Bypass: Indications, Prevalence and Safety. Obesity Surgery. 2023 Mar 15.
Dang JT, Kim GJ, Kroh M. Bariatric Endoscopy: From Managing Complications to Primary Metabolic Procedures. Journal of Minimally Invasive Surgery. 15 Mar 2023.
Mocanu V, Verhoeff K, Dang JT, Birch DW, Karmali S, Switzer NJ. Post-operative but not Pre-operative COVID-19 predicts serious complications and mortality following elective bariatric surgery. Obesity Surgery. 2023 Feb 18.
Jogiat UM, Mocanu V, Verhoeff K, Dang JT, Birch DW, Switzer NJ, Karmali S. Method of Venous Thromboembolism Prophylaxis is not a Predictor of Pulmonary Embolus Following Elective Bariatric Surgery: A Retrospective Cohort of 135,409 Patients. Surgery for Obesity and Related Diseases. 2022 Dec 1.
Dang JT, Mocanu V, Verhoeff K, Allemang M, Kroh M, Karmali S. Predicting serious complications following bariatric surgery in geriatric patients: Development of the GeriBari scoring tool using the MBSAQIP database. Surgery for Obesity and Related Diseases. 13 Sep 2022.
Verhoeff K, AlKattan K, Mocanu V, Fang B, Dang J, Kung JY, Switzer N, Birch D, Karmali S. Are we overestimating the effect of indocyanine green on leaks following colorectal surgery: a systematic review and meta-analysis. Innovations in Surgery and Interventional Medicine. 15 June 2022.
Dang JT, Deprato A, Verhoeff K, Sun W, Pandey A, Mocanu V, Karmali S, Switzer NJ, Nguyen NT. Variation of Laparoscopic Roux-en-Y Gastric Bypass Techniques: A Survey of 518 Bariatric Surgeons. Obesity Surgery. 6 May 2022.
Verhoeff K, Mocanu V, Fang B, Dang JT, Sun W, Switzer N, Birch DW, Karmali S. Characterization of near-infrared imaging and indocyanine-green use amongst general surgeons: a survey of 263 general surgeons. Surgical Innovation. 22 April 2022.
Dang JT, Mocanu V, Park H, Laffin M, Karmali S, Birch DW, Madsen K. Roux-en-Y gastric bypass and sleeve gastrectomy induce substantial and persistent changes in microbial communities and metabolic pathways. Gut Microbes. 22 Mar 2022.
Purich K, Mocanu V, Joy J, Verhoeff K, Dang J, Switzer NJ, Birch DW, Karmali S. The Impact of Metabolic and Bariatric Surgeon Status on Outcomes After Bariatric Surgery: A Retrospective Cohort Study Using the MBSAQIP Database. Obesity Surgery. 2022 Mar 29.
Verhoeff K, Mocanu V, Dang J, Wilson H, Switzer N, Birch D, Karmali S. Effect of the COVID-19 pandemic on bariatric surgery in North America – A retrospective analysis of 834,647 patients. Surgery for Obesity and Related Diseases. 2022 Mar 19.
Verhoeff K, Mocanu V, Dang J, Switzer NJ, Birch DW, Karmali S. Characterization and Risk Factors for Early Biliary Complications Following Elective Bariatric Surgery: An MBSAQIP Analysis. Obesity Surgery. 2022 Jan 19.
Connell M, Sun WYL, Mocanu V, Dang J, Kung J, Switzer NJ, Birch D, Karmali S. Management of Choledocholithiasis after Roux-en-Y Gastric Bypass: A Systematic Review and Pooled Proportion Meta-Analysis. Surgical Endoscopy. 2022 Jan 18.
Mocanu V, Dang JT, Delisle M, Switzer NJ, Birch DW, Karmali S. 30-day Major Adverse Cardiac Events (MACE) after elective bariatric surgery: the development and validation of the Bari-MACE clinical predictive tool. Surgery for Obesity and Related Diseases. 2022 Mar 1.
Sun W, Verhoeff K, Hafid ME, Mocanu V, Dang JT, Lutzak G, Sultanian R, Karmali S, Wong CK. The Effect of COVID-19 Pandemic on Current and Future Endoscopic Personal Protective Equipment Practices: A National Survey of 77 Endoscopists. Journal of the Canadian Association of Gastroenterology. 2022 Jan 19.
Dang JT, Mocanu V, Park H, Laffin M, Tran C, Hotte N, Karmali S, Birch DW, Madsen K. Ileal microbial shifts after Roux-en-Y gastric bypass orchestrate changes in glucose metabolism through modulation of bile acids and L-cell adaptation. Scientific Reports. 2021 Dec 10.
Verhoeff K, Mocanu V, Zalaski A, Dang J, Kung JY, Switzer NJ, Birch DW, Karmali S. Evaluation of metabolic outcomes following SADI-S: A systematic review and meta-analysis. Obesity Surgery. 2022 Jan 19.
Verhoeff K, Mocanu V, Dang J, Purich K, Switzer NJ, Birch DW, Karmali S. Five Years of MBSAQIP Data: Characteristics, Outcomes, and Trends for Patients with Super-obesity. Obesity Surgery. 2021 Nov 15.
Jogiat UM, Sun WYL, Dang JT, Mocanu V, Kung JY, Karmali S, Turner SR, Switzer NJ. Gastric ischemic conditioning prior to esophagectomy reduces anastomotic leaks and strictures: a systematic review and meta-analysis. Surgical Endoscopy. 2021 Nov 15.
Dang JT, Mocanu V, Fang B, Laffin M, Karmali S, Madsen K, Birch DW. A Protocol for Roux-en-Y Gastric Bypass in Rats Using Linear Staplers. Journal of Visualized Experiments. 2021 Aug 21.
Mierzwa A, Mocanu V, Marcil G, Dang JT, Switzer NJ, Birch DW, Karmali S. Characterizing timing of postoperative complications following elective Roux-en-Y gastric bypass and sleeve gastrectomy. Obesity Surgery. 2021 Aug 10.
Mocanu V, Park H, Dang J, Hotte N, Thiesen A, Laffin M, Wang H, Birch D, Madsen K. Timing of Tributyrin supplementation differentially modulates gastrointestinal inflammation and gut microbial recolonization following murine ileocecal resection. Nutrients. 2021 Jun 17.
Mocanu V, Marcil G, Dang JT, Birch DW, Switzer NJ, Karmali S. Preoperative weight loss is linked to improved mortality and leaks following elective bariatric surgery: An Analysis of 548,597 patients from 2015 to 2018. Surgery for Obesity and Related Diseases. 2021 Jul 7.
Abu-Omar N, Marcil G, Valentin V, Dang JT, Switzer J, Kanji A, Birch D, Karmali S. The effect of the COVID19 Pandemic on bariatric surgery delivery in Edmonton Alberta – A single center experience. Canadian Journal of Surgery. 2021 May 26.
Wilson H, Mocanu V, Sun W, Dang J, Jogiat U, Kung J, Switzer N, Wong C, Karmali S. Fundoplication is superior to medical therapy for Barrett’s esophagus disease regression and progression: a systematic review and meta-analysis. Surgical Endoscopy. 18 May 2021.
Dang JT, Dang TNT, Chambers T, Wine E, Dicken B, Madsen K, Laffin MR. The Genetics of Post-operative Recurrence in Crohn’s Disease: A Systematic Review, Meta-analysis, and Framework for Future Work. Crohn’s & Colitis 360. 17 Mar 2021.
Mocanu V, Rajaruban S, Dang J, Kung J, Deehan E, Madsen K. Repeated fecal microbial transplantations and antibiotic pre-treatment are linked to improved clinical response and remission in inflammatory bowel disease. Journal of Clinical Medicine. 1 Mar 2021.
Shelton JP, Mocanu V, Dang JT, Abualhassan N, Birch DW, Switzer NJ, Karmali S. Implications of Technical Factors in Development of Early Sleeve Stenosis After Laparoscopic Sleeve Gastrectomy: An Analysis Using the Metabolic and Bariatric Surgery Accreditation and Quality Improvement Program Database. Obesity Surgery. 18 Feb 2021.
Mocanu V, Lai K, Dang JT, Switzer NJ, Birch DW, Ball GDC, Karmali S. Evaluation of the Trends, Characteristics, and Outcomes in North American Youth Undergoing Elective Bariatric Surgery. Obesity Surgery. 6 Feb 2021.
Modi R, Kabani R, Dang J, Chapelsky S, Sharma AM. Anti-Obesity Medications: An Update for Canadian Physicians. Canadian Journal of General Internal Medicine. 18 Nov 2020.
Verhoeff K, Dang JT, Deprato A, Kung JY, Switzer NJ, Birch DW, Wong C, Karmali S. Surgical management of hiatal hernia vs medical therapy to treat bleeding Cameron lesions: a systematic review and meta-analysis. Surgical Endoscopy. 6 Nov 2020.
Skulsky S, Dang JT, Switzer NJ, Sharma A, Karmali S, Birch DW. Higher Edmonton Obesity Staging System scores are independently associated with postoperative complications and mortality following bariatric surgery: An analysis of the MBSAQIP. Surgical Endoscopy. 5 Nov 2020.
Nasralla A, Lee J, Dang J, Turner S. Elevated preoperative CEA is associated with subclinical nodal involvement and worse survival in stage I non-small cell lung cancer: a systematic review and meta-analysis. Journal of Cardiothoracic Surgery. 15 Oct 2020.
Verhoeff K, Dang JT, Modasi A, Switzer NJ, Birch DW, Karmali S. Bariatric Surgery Outcomes in Patients with Previous Organ Transplant: Scoping Review and Analysis of the MBSAQIP. Obesity Surgery. 15 Oct 2020.
Mocanu V, Dang JT, Birch DW, Karmali S, Switzer NJ. Factors implicated in discharge disposition following elective bariatric surgery. Surgery for Obesity and Related Diseases. 2 Sep 2020.
Dang JT, Shelton J, Mocanu V, Sun W, Birch DW, Karmali S, Switzer NJ. Trends and Outcomes of Laparoscopic Sleeve Gastrectomy Between 2015 and 2018 in the United States and Canada. Obesity Surgery. 21 Aug 2020.
Mocanu V, Mihajlovic I, Dang JT, Birch DW, Karmali S, Switzer NJ. Evolving trends in North American gastric bypass delivery: a retrospective MBSAQIP analysis of technical factors and outcomes from 2015 to 2018. Obesity Surgery. 6 Aug 2020.
Clement E, Dang JT, Laffin M, Wang H. Incidence of venous thromboembolism following proctectomy is greater in ulcerative colitis than in malignancy or Crohn’s Disease. Journal of Gastrointestinal Surgery. 23 July 2020.
Sun W, Dang JT, Modasi A, Nasralla A, Switzer N, Birch DW, Turner S, Karmali S. Diagnostic Accuracy of Sentinel Lymph Node Biopsy Using Indocyanine Green In Lung Cancer: A Systematic Review and Meta-Analysis. General Thoracic and Cardiovascular Surgery. 16 June 2020.
Mocanu V, Dang JT, Sun W, Birch DW, Karmali S, Switzer NJ. An evaluation of the modern North American bariatric surgery landscape: current trends and predictors of procedure selection. Obesity Surgery. 8 May 2020.
Purich K, Dang JT, Poonja A, Sun W, Bigam D, Birch D, Karmali S. Intraoperative fluorescence imaging with indocyanine green in hepatic resection for malignancy: a systematic review and meta-analysis of diagnostic test accuracy studies. Surgical Endoscopy. 7 Apr 2020.
Dang JT, Tavakoli I, Switzer N, Mocanu V, Shi X, de Gara C, Birch DW, Karmali S. Factors that predict 30-day readmission after bariatric surgery: experience of a publicly funded Canadian centre. Canadian Journal of Surgery. 1 April 2020.
Dang JT, Lee JKH, Kung J, Switzer NJ, Karmali S, Birch DW. The Effect of Bariatric Surgery on Migraines: A Systematic Review and Meta-Analysis. Obesity Surgery. 2020 Mar 30.
Sun WT, Switzer NJ, Dang JT, Gill R, Shi X, de Gara C, Birch D, Nataraj A, Karmali S. Idiopathic Intracranial Hypertension and Bariatric Surgery: A Systematic Review. Canadian Journal of Surgery. 20 Mar 2020.
Dang JT, Moolla M, Dang TNT, Shaw A, Tian C, Karmali S, Sultanian R. Sodium phosphate is superior to polyethylene glycol in constipated patients undergoing colonoscopy: A systematic review and meta-analysis. Surgical Endoscopy. 2020 Mar 2.
Zhang Z, Mocanu V, Cai C, Dang J, Slater L, Deehan EC, Walter J, Madsen KL. Impact of Fecal Microbiota Transplantation on Obesity and Metabolic Syndrome-A Systematic Review. Nutrients. 25 Sep 2019.
Ta D, Dang JT, Sharma AM, Karmali S, Modi R. Use of Liraglutide in a Tertiary Bariatric Clinic: A Case Series. Journal of Obesity and Chronic Diseases. 12 Sep 2019.
Skulsky S, Dang JT, Battiston A, Switzer NJ, Birch DW, Sharma AM, Karmali S. Higher Edmonton Obesity Staging System scores are associated with complications following laparoscopic Roux-en-Y gastric bypass. Surgical Endoscopy. 27 Aug 2019.
Moolla M, Dang JT, Shaw A, Dang TNT, Tian C, Karmali S, Sultanian R. Simethicone decreases bloating and improves bowel preparation effectiveness: a systematic review and meta-analysis. Surgical Endoscopy. 26 Aug 2019
Mocanu V, Dang J, Ladak F, Switzer N, Birch DW, Karmali S. Predictors and outcomes of bleed after sleeve gastrectomy: An analysis of the MBSAQIP data registry. Surgery for Obesity and Related Diseases. 10 Aug 2019.
Lee Y, Dang JT, Switzer N, Malhan R, Birch DW, Karmali S. Bridging interventions before bariatric surgery in patients with BMI ≥ 50 kg/m2: a systematic review and meta-analysis. Surgical Endoscopy. 2019 Aug 9.
Dang JT, Sheppard C, Kim D, Switzer NJ, de Gara C, Karmali S, Birch DW. Predictive Factors for Diabetes Remission after Bariatric Surgery. Canadian Journal of Surgery. 2019 Aug 1.
Modasi A, Dang JT, Afraz S, Hefler J, Switzer N, Birch DW, Karmali S. Bariatric Surgery Outcomes In Patients On Preoperative Therapeutic Anticoagulation: An Analysis Of The 2015 to 2017 MBSAQIP. Obesity Surgery. 2019 Jul 5.
Afraz S, Dang JT, Modasi A, Switzer N, Birch DW, Karmali S. Bariatric Surgery Outcomes in Patients on Home Oxygen Therapy: An Analysis of the MBSAQIP Database. Surgery for Obesity and Related Diseases. 2019 Jul 4.
Moolla M, Dang J, Modasi A, Byrns S, Switzer N, Birch DW, Karmali S. Concurrent Laparoscopic Ventral Hernia Repair with Bariatric Surgery: a Propensity-Matched Analysis. Journal of Gastrointestinal Surgery. 2019 Jun 26.
Dang JT, Tran C, Switzer N, Delisle M, Laffin M, Madsen K, Birch DW, Karmali S. Predicting surgical site infections following laparoscopic bariatric surgery: development of the BariWound tool using the MBSAQIP database. Surgical Endoscopy. 2019 Jun 24.
Dang JT, Szeto VG, Elnahas A, Ellsmere J, Okrainec A, Neville A, Malik S, Yorke E, Hong D, Biertho L, Jackson T, Karmali S. Canadian consensus statement: enhanced recovery after surgery in bariatric surgery. Surgical Endoscopy. 2019 Jun 17.
Hefler J, Dang J, Modasi A, Switzer N, Birch DW, Karmali S. Effects of Chronic Corticosteroid and Immunosuppressant Use in Patients Undergoing Bariatric Surgery. Obesity Surgery. 2019 Jun 4.
Dang T, Dang JT, Moolla M, Switzer N, Madsen K, Birch DW, Karmali S. Clostridium difficile and laparoscopic bariatric surgery: an analysis of the Metabolic and Bariatric Surgery Accreditation and Quality Improvement Program database. Obesity Surgery. 2019 Feb 26.
Gamme G, Dang JT, Switzer NJ, Gill R, Birch DW, Karmali S. Evaluating the Safety of Bariatric Surgery for Weight Loss in Class I Obesity: A Propensity-Matched Analysis of North American data. Surgery for Obesity and Related Diseases. 2019 Feb 1.
Mocanu V, Tavakoli I, Macdonald A, Dang JT, Birch DW, Karmali S. The impact of ADHD on outcomes following bariatric surgery: A Systematic Review and Meta-Analysis. Obesity Surgery. 2019 Jan 31.
Mocanu V, Dang JT, Ladak F, Wang H, Birch DW, Karmali S. Antibiotic use in prevention of anal fistulas following incision and drainage of anorectal abscesses: A systematic review and meta-analysis. American Journal of Surgery. 2019 Jan 31.
Mocanu V, Dang JT, Ladak F, Switzer N, Birch DW, Karmali S. Predictors and outcomes of leak after RYGB: An analysis of the MBSAQIP data registry. Surgery for Obesity and Related Diseases. 2019 Jan 26.
Mocanu V, Nasralla A, Dang JT, Jacobson M, Madsen K, Birch DW, Karmali S. Ongoing Inconsistencies in Weight Loss Reporting Following Bariatric Surgery: a Systematic Review. Obesity Surgery. 2019 Jan 22.
Ladak F, Dang JT, Switzer N, Mocanu V, Birch DW, Karmali S. Rates of Reoperation and Intervention Within 30 Days of Bariatric Surgery. Surgery for Obesity and Related Diseases. 2019 Jan 11.
Ladak F, Dang JT, Switzer N, Mocanu V, Tian C, Birch DW, Turner S, Karmali S. Indocyanine green for the prevention of anastomotic leaks following esophagectomy: a meta-analysis. Surgical Endoscopy. 2018 Nov 1.
Lee Y, Dang JT, Switzer NJ, Yu J, Tian C, Birch DW, Karmali S. Impact of Bariatric Surgery on Male Sex Hormones and Sperm Quality: A Systematic Review and Meta-Analysis. Obesity Surgery. 2018 Oct 31. Selected for Global Press Release by Springer.
Dang JT, Switzer NJ, Delisle M, Laffin M, Gill R, Birch DW, Karmali S. Predicting venous thromboembolism following laparoscopic bariatric surgery: Development of the BariClot tool using the MBSAQIP database. Surgical Endoscopy. 2018 July 12.
Dang JT, Switzer NJ, Sun WY, Raghavji F, Birch DW, Karmali S. Evaluating the Safety of Intragastric Balloon: An Analysis of the Metabolic and Bariatric Surgery Accreditation and Quality Improvement Program. Surgery for Obesity and Related Diseases. 2018 May 17. Selected as CME Credit Featured Article by Surgery for Obesity and Related Diseases.
Skubleny D, Dang JT, Skulsky S, Switzer NJ, Tian C, Shi X, de Gara C, Birch DW, Karmali S. Diagnostic evaluation of sentinel lymph node biopsy using indocyanine green and infrared or fluorescent imaging in gastric cancer: A systematic review and meta-analysis. Surgical Endoscopy. 2018 Mar 2.
Dang JT, Lester E, Sun W, Fawcett V, Widder S, Tsang B. The Impact of Traumatic Injury in the Oil and Gas Industry. Trauma. 2018 Mar 22.
Mocanu V, Dang JT, Switzer N, Tavakoli I, Tian C, de Gara C, Birch DW, Karmali S. The Role of Antibiotics in Acute Uncomplicated Diverticulitis: A Systematic Review and Meta-analysis. The American Journal of Surgery. 2018 Feb 2. Selected for publication in Annals of Emergency Medicine as a Systematic Review Snapshot.
Mocanu V, Dang JT, Switzer NJ, Skubleny D, Shi X, de Gara C, Birch DW, Karmali S. The Effect of Helicobacter pylori on Postoperative Outcomes in Patients Undergoing Bariatric Surgery: a Systematic Review and Meta-analysis. Obesity Surgery. 2017 Nov 21.
Sun WY, Dang JT, Switzer NJ, de Gara C, Birch DW, Karmali S. The Utility of Routine Esophagogastroduodenoscopy Prior to Laparoscopic Roux-en-Y Gastric Bypass. Surgery for Obesity and Related Diseases. 2017 Jun 28.
Skubleny D, Switzer NJ, Dang J, Gill RS, Shi X, de Gara C, Birch DW, Wong C, Hutter MM, Karmali S. LINX® magnetic esophageal sphincter augmentation versus Nissen fundoplication for gastroesophageal reflux disease: a systematic review and meta-analysis. Surgical Endoscopy. 2016 Dec 15:1-7.
Birch DW, Dang JT, Switzer NJ, Manouchehri N, Shi X, Hadi G, Karmali S. Heated insufflation with or without humidification for laparoscopic abdominal surgery. Cochrane Database of Systematic Reviews 2016, Issue 10. 2016 Oct 19.
Nostedt J, Switzer NJ, Gill RS, Dang J, Birch DW, de Gara C, Bailey R, Karmali S. The Effect of Bariatric Surgery on the Spectrum of Fatty Liver Disease. Canadian Journal of Gastroenterology and Hepatology. 2016 Sep 25.
Chow A, Switzer NJ, Dang J, Shi X, de Gara C, Birch DW, Gill RS, Karmali S. A Systematic Review and Meta-Analysis of Outcomes for Type 1 Diabetes after Bariatric Surgery. Journal of Obesity. 2016 May 10.
Dang JT, Switzer NJ, Shi X, Karmali S. Response to Letter to the Editor - Re: Gastric band removal in revisional bariatric surgery, one-step versus two-step: A systematic review and meta-analysis. Obesity Surgery. 2016 Mar 23.
Dang JT, Switzer NJ, Wu J, Gill RS, Shi X, Thereaux J, Birch DW, de Gara C, Karmali S. Gastric band removal in revisional bariatric surgery, one-step versus two-step: A systematic review and meta-analysis. Obesity Surgery. 2016 Feb 2: 1-8.
Chow A, Switzer NJ, Gill RS, Dang J, Ko YM, Shi X, Birch DW, de Gara C, Karmali S. Roux-en-Y Gastric Bypass in the Elderly: A Systematic Review. Obesity Surgery. 2015 Dec 14:1-5.

Book Chapters

Lee YH, Dang JT, Kroh M. Biliary Tract and Pancreatic Disease. The ASMBS Textbook of Bariatric Surgery, Third Edition. 2026.
Mocanu V, Dang JT, Corcelles R. Connective Tissue Disorders and Metabolic Surgery. The ASMBS Textbook of Bariatric Surgery, Third Edition. 2026
Dang JT, Kroh M. Gastric Peroral Endoscopic Myotomy (G-POEM)/Peroral Pyloromyotomy. Third Space Endoscopy. 2025.
Lee YH, Dang JT. Sleeve Stenosis, Torsion, and Delayed Emptying. The SAGES Manual of Metabolic and Bariatric Surgery, Third Edition. 2024.
Dang J, Switzer NJ, Karmali S. Stricture Management: Interventional Options. The SAGES Manual: Operating Through the Endoscope, Second Edition. 2023.
Dang J, Switzer N, Karmali S. Bariatric Surgical Emergencies. Dynamic Practice Guidelines for Emergency General Surgery. Committee on Acute Care Surgery, Canadian Association of General Surgeons. 2021.
Zuo K, Dang J, Pandya S, Ansari K. Neck Mass/Goiter. Edmonton Manual: Approach to the OSCE, Fourth Edition. Edmonton. 2015.

Editorials

Wills MV, Dang J. Beyond Body Mass Index: What We Should Have Been Measuring All Along. Journal of the American College of Surgeons. 2026 Mar 13.
Kachmar M, Shin TH, Dang JT, Albaugh VL. Comment on: towards a better mouse model of vertical sleeve gastrectomy. Surgery for Obesity and Related Diseases. 2025 Sep 9.
Chaivanijchaya K, Dang JT. Comment on: Bariatric surgery is as Safe as Other Common Operations: An Analysis of the ACS-NSQIP. Surgery for Obesity and Related Diseases. 2023 Dec 30.
Chen I, Dang JT. Comment on: Investigation of the effect of weight loss after laparoscopic sleeve gastrectomy on Cobb angle, low back, and back pain: a prospective study. Surgery for Obesity and Related Diseases. 9 Sep 2023.
Dang JT, Guerron AD. Comment on: Effect of preoperative metabolic profiling to reduce the risk of kidney stones after bariatric surgery in patients with a history of stone formation. Surgery for Obesity and Related Diseases. 2023 Jan 02.
Dang JT, Karmali S. Is RYGB more effective than sleeve gastrectomy? Nature Reviews Endocrinology. 2019 Jan 3.

Letters

Barajas-Gamboa JS, Restrepo-Rodas G, Mocanu V, Wills MV, Shin TH, Kachornvitaya P, Romero-Velez G, Zhu X, Strong AT, Navarrete S, Corcelles R, Kroh M, Dang J. Letter to the editor: insight on postoperative conversion trends in elderly bariatric patients: a MBSAQIP analysis. Surgery for Obesity and Related Diseases. 2026 Mar 16.
Lee Y, Shin T, Tessier L, Javidan A, Jung J, Hong D, Strong AT, McKechnie T, Malone S, Jin D, Kroh M, Dang JT. Response to "Harnessing artificial intelligence in bariatric surgery: Correspondence". Surgery for Obesity and Related Diseases. 2024 Jul 10.
Romero-Velez G, Ponce de Leon-Ballesteros G, Barajas-Gamboa J, Dang J, Strong A, Kroh M. Letter to Editor: In response to existence of SARS-Cov-2 in the peritoneal fluid. Revista Brasileira de Ginecologia e Obstetrícia. 2023 Jul 4.
Mocanu V, Nasralla A, Dang JT, Jacobson M, Madsen K, Birch DW, Karmali S. Response to Letter to the Editor: Ongoing Inconsistencies in Weight Loss Reporting Following Bariatric Surgery: a Systematic Review. Obesity Surgery. 22 April 2020.
Dang JT, Switzer NJ, Sun WY, Raghavji F, Birch DW, Karmali S. Response to Letter to the Editor – Re: Comment on Evaluating the safety of intragastric balloon: An analysis of the Metabolic and Bariatric Surgery Accreditation and Quality Improvement Program. Surgery for Obesity and Related Diseases. 2018 Nov 16.

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Jerry Dang Laboratory

Jerry Dang Laboratory

Principal Investigator

Jerry Dang, MD, PhD

Research

Biography

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Research

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Our Team

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Careers

Training at Cleveland Clinic Research