Bazarbashi AN, Dolan RD, McCarty TR, Jirapinyo P, Thompson CC Endoscopic revision of gastrojejunal anastomosis for the treatment of dumping syndrome in patients with Roux-en-Y gastric bypass: a systematic review and meta-analysis. Surg Endosc. 2022 Jun;36(6):4099-4107. doi: 10.1007/s00464-021-08731-4. Epub 2021 Oct 20.
Jirapinyo P, McCarty TR, Dolan RD, Shah R, Thompson CC Effect of Endoscopic Bariatric and Metabolic Therapies on Nonalcoholic Fatty Liver Disease: A Systematic Review and Meta-analysis. Clin Gastroenterol Hepatol. 2022 Mar;20(3):511-524.e1. doi: 10.1016/j.cgh.2021.03.017. Epub 2021 Mar 13.
Jirapinyo P, Thompson CC Comparison of distal primary obesity surgery endolumenal techniques for the treatment of obesity (with videos). Gastrointest Endosc. 2022 Sep;96(3):479-486. doi: 10.1016/j.gie.2022.04.1346. Epub 2022 May 11.
Jirapinyo P, Thompson CC Endoscopic gastric plication for the treatment of weight regain after Roux-en-Y gastric bypass (with video). Gastrointest Endosc. 2022 Jul;96(1):51-56. doi: 10.1016/j.gie.2022.02.051. Epub 2022 Mar 5.
Jirapinyo P, Thompson CC Primary Bariatric Procedures. Dig Dis Sci. 2022 May;67(5):1674-1687. doi: 10.1007/s10620-022-07393-z. Epub 2022 Mar 29.
Thompson CC, Jirapinyo P, Shah R, Simsek C Gastroplasty With Endoscopic Myotomy (GEM) for the Treatment of Obesity: Preliminary Efficacy and Physiologic Results. Gastroenterology. 2022 Nov;163(5):1173-1175. doi: 10.1053/j.gastro.2022.07.077. Epub 2022 Au
Interventional studies are often prospective and are specifically tailored to evaluate direct impacts of treatment or preventive measures on disease.
Observational studies are often retrospective and are used to assess potential causation in exposure-outcome relationships and therefore influence preventive methods.
Expanded access is a means by which manufacturers make investigational new drugs available, under certain circumstances, to treat a patient(s) with a serious disease or condition who cannot participate in a controlled clinical trial.
Clinical trials are conducted in a series of steps, called phases - each phase is designed to answer a separate research question.
Phase 1: Researchers test a new drug or treatment in a small group of people for the first time to evaluate its safety, determine a safe dosage range, and identify side effects.
Phase 2: The drug or treatment is given to a larger group of people to see if it is effective and to further evaluate its safety.
Phase 3: The drug or treatment is given to large groups of people to confirm its effectiveness, monitor side effects, compare it to commonly used treatments, and collect information that will allow the drug or treatment to be used safely.
Phase 4: Studies are done after the drug or treatment has been marketed to gather information on the drug's effect in various populations and any side effects associated with long-term use.
