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 study is to find out if the study medicine called EDIT-301 will help in the treatment of Severe Sickle Cell Disease (SCD) and how safe it is to be used in people. EDIT-301 (study medicine) is a new investigational therapy which uses the patient's own stem cells, modifies them by CRISPR technology, and infuses them back to the…
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 study is to learn about whether the study drug (PF-07209326) is safe and effective in people with sickle cell disease and learn about what the right dose is. We will look at drug levels in the blood, see how fast drug levels rise and fall, and what effects the drug has, all of which are known as the pharmacokinetics (PK) and…
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.
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…
This study is being done to see if giving your child a lower dose of chemotherapy (drug therapy), than has been used historically in bone marrow transplant, to kill his/her own diseased cells before he/she receives a bone marrow transplant, will possibly result in the permanent control of your child's sickle cell disease. Patients will receive busulfan…
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…
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.…
The purpose of this research is to learn how to help parent youth pairs work together to help youth with sickle cell disease take hydroxyurea every day as a daily habit. This study is for children and teens ages 10-18 with Sickle Cell Anemia taking hydroxyurea, and their parents (or guardians). Many children and teens do not use hydroxyurea every day. Daily…
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.