Bariatric surgery and a once-weekly glucagon-like peptide-1 medicine both cause major weight loss in teens, but their effects on mouth and gut bacteria and on damaged blood fats tied to metabolism are still unknown. This study will collect saliva, stool, and routine blood samples from adolescents before treatment and six months later to see how these…
We are conducting a research study on the effect of high insulin levels on the buildup of excessive liver fat ("fatty liver disease") in people at risk for type 2 diabetes. We are seeking adult volunteers, ages 18-65, who have obesity with a body mass index of 30-45, and have been diagnosed with, or are at risk for, prediabetes and metabolic…
We are researchers at Columbia studying the learning and decision making. We are looking for participants over the age of 18, who have been prescribed Trizepatide for weight loss. Participants will be asked to complete an MRI scan and play computer games. Participants earn $25 per hour. Help us understand how the GLP-1 agonists affect brain and cognition!
The Physiology of the Weight Reduced State (POWERS) is a national research study designed to discover and learn what happens to the human body after weight loss and to learn why some people regain their lost weight. Understanding why this happens could help health professionals improve strategies for successful weight loss maintenance after weight loss.…
The purpose of this study is to evaluate if genetic variations are associated with the amount of weight loss with diet and while taking an FDA-approved medication for weight loss. The participation lasts ten months and includes six in-person visits at CUIMC with blood sampling and questionnaires, virtual nutritional counseling, and taking an oral weight…
We are conducting a research study on how insulin controls blood sugar in both healthy people and those at risk of type 2 diabetes. We are seeking adult volunteers, aged 18-65, who have body mass indices either in the lean range (18-25 kg/m2) or in the obesity range (30-45 kg/m2) but who do not have prediabetes or diabetes. Participants will undergo a…
We are recruiting volunteers, aged 18-70, for a research study on the buildup of excessive liver fat ("fatty liver disease") in people with or at risk for type 2 diabetes because their bodies are resistant to the actions of the blood sugar-lowering hormone, insulin. To do this, we seek to temporarily induce or accentuate insulin resistance in 14…
We are seeking adult volunteers with body mass index in the obesity range (30-45 kg/m2) to come in for a single study visit where they answer some health questions and have a small volume of blood drawn (25 cc/1.7 tbsp). We will measure levels of the blood sugar-lowering hormone insulin as well as glucose (sugar), certain fats, and other molecules related…
The purpose of this research study is to evaluate the safety and effectiveness (how well the study drug works) of NBTRX3 administered via intratumoral injections (injected directly into tumor) and used together with radiotherapy or radiotherapy combined with cetuximab, and how it compares with radiotherapy alone, or radiotherapy combined with cetuximab.…
We're conducting a research study on how much insulin is needed to control blood sugar in people who are made temporarily resistant to insulin's effects. Insulin is the main hormone (chemical signal) that the body uses to lower the levels of sugar in the blood. We are interested in looking at insulin levels because we think that lowering insulin…
The purpose of this clinical study is to evaluate the safety and efficacy of two doses of GT005 administered as a single subretinal injection in individuals with geographic atrophy secondary to dry age-related macular degeneration (AMD) who qualify, based on genetic testing.
Macular degeneration is a progressive eye disease that damages the macula. The macula is the part of the eye that is responsible for central vision, which is needed to perform straight-ahead activities, such as reading, driving, or watching TV. This research is being conducted to learn about the safety and efficacy (how effectively the study drug works) of…
This study is for patients with Glaucoma. The purpose of this study is to investigate the safety and effectiveness of a study drug called Bimatoprost Sustained Release (SR) compared to treatment with eye drug Timolol. The Bimatoprost SR is an implant that is very small, is biodegradable (dissolves naturally in the body), and contains the bimatoprost drug.
The study involves research about MGA271 in combination with Keytruda. MGA271 targets cancer cells that make a lot of a protein called B7-H3. Another way to say it is that the cells "overexpress" the protein. Very few normal cells express B7-H3. MGA271 is though to work by recognizing cancer cells that overexpress B7-H3 and directing the body…
Stargardt macular degeneration isa genetic condition, which in mostcases causes vision loss early in lifeand leads to legal blindness. Thereis currently no FDA-approvedtreatment.This trial will evaluate the safetyand effects of ALK-001, a newpotential drug treatment, on theprogression of Stargardt disease.ALK-001 is a capsule administereddaily by mouth.This…
The purpose of this study is to study ADU-S100 and pembrolizumab in patients with recurrent or metastatic head and neck squamous cell cancer (HNSCC). This study aims to evaluate how safe and effective this drug combination is at treating your cancer. These drugs are thought to work by interacting with your immune system to in order to more effectively…
Glaucoma is the leading cause of irreversible blindness worldwide. The most important test to detect progression is visual field testing. However, this test is very subjective, often unreliable, and variable. One of the main causes of unreliable tests is the lack of attentiveness or concentration during the test. Previous studies have shown that listening…
There are two study questions we are asking in this randomized phase II/III trial based on a blood biomarker, Epstein Barr virus (EBV) deoxyribonucleic acid (DNA) for locoregionally advanced non-metastatic nasopharyngeal cancer. All patients will first undergo standard concurrent chemotherapy and radiation therapy. When this standard treatment is completed…
Glaucoma is a given name of a group of diseases that affect the retinal ganglion cells in the eye and the optic nerve. Glaucoma cause degeneration of the retinal ganglion cells in the retina and their projections (axons) that form the optic nerve. Retinal ganglion cells and their axons transmit all of our vision information from the eye to the brain through…
The abicipar is an injectable medication stored as a liquid in a single-use glass vial for delivery into the back of the eye. The active component is a protein drug that was made using bioengineering technology. It was designed to bind to and inactivate a protein called Vascular Endothelial GrowthFactor (VEGF) that plays an important role in causing AMD.…