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 the study is to evaluate the safety of Lutathera alone in patients with recurrent glioblastoma and the combination of Lutathera with radiotherapy with temozolomide (TMZ) in patients with newly diagnosed glioblastoma (GB) and to establish the appropriate dose of this combination. Lutathera is a radioligand therapy, which is a targeted…
Children and young adults with diffuse midline glioma will be treated with Focused Ultrasound (FUS) with DEFINITY microbubbles and neuro-navigator-controlled sonication. The overall goal of this study is to see if the study treatment plan will improve the outcome of participants with diffuse midline glioma, for which no known cure exists, and determine…
The purpose of this study is to test good and bad effects of these two different drugs against meningioma tumors with altered genes. Today, therapy for meningioma is the same for all patients and is not based on tumor genetic testing. This trial is trying to see if tumor genetic testing would be helpful at guiding treatment in patients with meningioma.…
The purpose of this study is to find out if REC-2282, an investigational new drug, is an effective and safe treatment in patients with progressive NF2 mutated meningiomas who have either NF2 disease-related meningioma or recurrent sporadic meningiomas that have NF2 mutation. Investigational new drug means a drug that has not been approved as a marketed…
The purpose of this study is to see how safe and effective Safusidenib erbumine, the study drug, is in treating brain glioma and to find the recommended dose of the study drug for clinical studies. Safusidenib is not Food and Drug Administration (FDA) approved.
The purpose of this study is to test the safety of a new vaccine, VBI-1901, and to know more about its ability to boost the response of the immune system against Cytomegalovirus. The reason for testing this vaccine in people with a brain tumor is that it might one day be used to boost the ability of the immune system to fight a certain type of brain tumor.…
The purpose of this study is to evaluate how safe the investigational drug, DSP-0390, is at different doses and to identify a recommended dose that is safe for further study. Investigational means that the study drug is currently being tested and has not been approved for use alone or in combination with any drug by the U.S. Food and Drug Administration (…
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 find the best dose of a drug called MTX110 and a contrast agent called gadolinium that can be given safely in children with newly diagnosed diffuse midline gliomas, which is a kind of brain tumor. All patients enrolled in the study will receive infusion of MTX110 and Gadolinium delivered with a pump directly into the tumor…
The purpose of this research study is to see if the combination of medications approved for the treatment of glioblastoma, together with the study drug, selinexor (also known as XPOVIO), has any effects on your cancer. Selinexor works by trapping tumor suppressor proteins within the cell nucleus. This is expected to cause the cancer cells to die or stop…
This study is being done to evaluate the safety and usefulness of the study drug, AG-881, as compared to placebo (a medically inactive substance) in residual or recurrent non-enhancing Grade 2 glioma (a type of brain cancer) that has a mutation in the IDH1 or IDH2 metabolic enzyme (a substance produced by the body to assist in breaking down chemicals).…
The purpose of this research study is to test how safe and how well an investigational drug known as ONC201 works in treating high grade glioma (a type of brain cancer). The FDA (the U.S. Food and Drug Administration) has not approved ONC201 as a treatment for this condition.
The purpose of this study is to measure how well and how safe eflornithine is in combination with lomustine, compared to lomustine taken alone, in treating patients whose anaplastic astrocytoma has come back after radiation and chemotherapy. Safety and how well you can tolerate the drug will be determined on the basis of physical exams, laboratory tests,…
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.
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…