The purpose of this study is to evaluate the use of diode laser photocoagulation of the communicating vessels in twin-to- twin transfusion syndrome (TTTS) with respect to maternal, fetal and neonatal outcomes.

Type: Observational [Patient Registry]

Start Date: Oct 2021

open study

This study is aimed at understanding the impact of gut microbiota on efficacy of cancer therapies, in particular checkpoint inhibitors, and using the resulting information to design microbial immunotherapies. Although animal models are of use to determine the influences of gut and other microbiota on cancer treatment modalities, they are limited due to differences between mouse and human physiology and immunology, as well as the inherent differences in gut microbial populations between the two mammalian organisms. Therefore, samples obtained as donations from human subjects undergoing cancer treatment are of great value for the identification and determination of bacteria and their metabolic processes that are involved in the successful cure and remission of cancer by checkpoint inhibitor therapies. The objective of this study is to collect 3 samples each of blood, urine, and stool in subjects with cancer. This is a non-interventional, 2 site study in 100 people who are undergoing any type of cancer immunotherapy. Subjects who meet the entry criteria will provide 5 samples each of blood, urine, and stool over a 12-month period.

Type: Observational

Start Date: Jun 2019

open study

The investigators propose a new imaging method for children born with congenital anomalies of the urinary tract that is a rapid, injection-, sedation-, and radiation-free alternative: the quick renal MRI. This proposal hypothesizes that the quick renal MRI has high validity compared to current radiologic standard for renal infection and scarring, the 99mTechnetium-dimercaptosuccinic acid (99mTc- DMSA) renal scan in the detection of acute renal infections and scars. If the quick renal MRI is accurate, it could potentially replace the DMSA scan for those specific questions and ease the burden of testing for children with chronic renal disease. Findings from these studies will provide preliminary data and rationale for a multi-centered study to further test this new technology. Participants will be 0-21 years of age and can expect to be on study for from 1 week (if enrolled in Aim 1) to 6 months (if enrolled in Aim 2).

Type: Interventional

Start Date: May 2019

open study

Determine safety and efficacy of pre-operative combination immunotherapy with Talimogene Laherparepvec (T-VEC)/Pembrolizumab given prior to complete lymph node dissection in resectable stage 3 cutaneous melanoma with clinically apparent lymph node metastases.

Type: Interventional

Start Date: Jul 2019

open study

Scoliosis is a three-dimensional deformity affecting the orientation and position of the spine. Locally, the shape of the vertebra is also affected. The most common form is adolescent idiopathic scoliosis (AIS) with a prevalence of 1-3% affecting primarily young adolescent females. AIS can either be treated using a brace and in some cases necessitate surgical correction to prevent progressive deformity. Risk factors for progression include female gender, curve magnitude and location, skeletal maturity and growth velocity. However, these risk factors have been shown to be inconsistent in predicting curve progression. Over the past 6 years, the investigators have developed a predictive model of the final Cobb angle in AIS based on 3D spinal parameters. This analysis was based on a prospective cohort of 195 patients that were enrolled upon their initial visit and followed until maturity. This predictive model has a determination coefficient of 0.702. The proposed new study aims at refining and testing the external validity of this model in a larger cohort. The next step towards using the new model in the clinical setting is to redesign the model and to externally validate the model by measuring the agreement between the new method and the traditional Cobb angle at maturity in a larger multicenter study. The objective of this study is to characterize the risk of scoliosis progression based on local three-dimensional vertebral and pelvic measurements present on initial evaluation. Three-dimensional reconstructions will be derived from stereo-radiographs acquired with a new biplanar low-dose radiographic system installed in all 8 clinical sites (EOS system, EOS-Imaging, Paris). These calibrated radiographs will then be used to reconstruct the vertebrae and intervertebral disks at each level as well as the geometry of the pelvis. A series of local and regional parameters will then be calculated from these 3D reconstructions. Correlation analysis will help determine if intervertebral disk wedging, vertebral wedging, transverse plane rotation or pelvic geometry can be used as early predictors of curve progression in AIS. Identifying a new 3D measure of scoliosis associated with rapid curve progression could help predict which curves need early treatment to prevent further progression. The ultimate goal of this research project will be to validate this new predictive model and finally transfer this new predictive tool in the hands of clinicians treating AIS.

Type: Observational

Start Date: May 2014

open study

The goal of this study is to evaluate the usefulness of hyperpolarized (HP) 129Xe (xenon) gas MRI for regional assessment of lung function in a normal population of adults for the purposes of obtaining optimal images through MRI.

Type: Interventional

Start Date: Feb 2015

open study

Purpose: The purpose of this project is to develop and test the COMPASS [Collaborative Model for Competence and Success] Across Settings (CAST) intervention to enhance the goal setting and attainment skills of autistic youth. Despite federal education law mandating transition services as part of the Individualized Education Program (IEP) for ensuring good outcomes for students with disabilities, current educational practices have been unable to demonstrate that autistic students experience positive postsecondary outcomes. There are existing, evidence-based interventions aimed at supporting positive outcomes for these students. However, these interventions have not systematically provided coaching support to the caregivers, students, and employment specialists. To address these issues, CAST will integrate three evidence-based interventions for supporting student transitions while providing this critical coaching support. By doing so, CAST aims to align the priorities and goals of interventions across home, school, and community settings to better support positive postsecondary outcomes for autistic students.

Type: Interventional

Start Date: Dec 2023

open study

Obstructive sleep apnea (OSA) is a highly prevalent disorder that has major consequences for cardiovascular health, neurocognitive function, risk of traffic accidents, daytime sleepiness, and quality of life. For years, a "classic" model of OSA has been used to describe the disorder, which fails to capture it's complexity. Recently, a model for OSA called drive-dependent OSA was discovered be more prevalent in the OSA population. This drive-dependent OSA is due to ventilation instability that occurs during respiratory events however these individuals have spontaneous increases in drive during respiratory events that stabilize their airway (i.e., via improving upper airway muscle activity) and reduce the risk of respiratory events in people with OSA. Therefore, by stabilizing the ventilatory drive, OSA should be treatable. Acetazolamide is a pharmacological ventilatory stimulant and has been previously shown to reduce OSA severity. As such in this study, the goal is to demonstrate acetazolamide improves OSA severity in 'drive-dependent' OSA people by improving drive-related pharyngeal obstructions compared to the 'classic' OSA people.

Type: Interventional

Start Date: Jan 2024

open study

The goal of this randomized counterbalanced repeated measures study is to test beet-root juice supplementation and red light therapy augment forearm muscle endurance in apparently healthy older adults over 65 years of age. The main questions seek to answer the following question: Does beet-root juice supplementation improve forearm muscle endurance compared to a placebo supplement? Does red light therapy improve forearm muscle endurance compared to a sham light exposure? Does beet-root juice supplementation in combination with red light therapy improve forearm muscle endurance compared to a placebo-sham light control?

Type: Interventional

Start Date: Sep 2022

open study

Nonalcoholic fatty liver disease (NAFLD) is now the most common liver disease worldwide and affects nearly 40% of obese youth and up to 10% of the general pediatric population. Some features of NAFLD are similar in children and adults, yet fibrosis and inflammation are more common in the portal zone and occur earlier in pediatric NAFLD patients than adults. This portends a rapid progression to end-stage liver disease in early adulthood. For the majority of children with NAFLD, mechanisms driving the origin and rapid progression of disease remain unknown. Thus, there is a critical, unmet need to study the specific underlying patterns of metabolic and molecular changes in the liver underlying the development and progression unique to children with NAFLD. This proposal will test the hypotheses that children with NAFLD have excess glucose and lipid produced by the liver, that those events are regulated by specific variations in the amount and location of RNAs and proteins in liver, and that the concentration of specific micro-RNAs in the blood can be used as a biomarker for NAFLD in pediatric patients.

Type: Interventional

Start Date: May 2022

open study

Patients with obsessive-compulsive disorder (OCD) experience a wide array of different types of obsessions and compulsions. However, current treatments for OCD employ a "one size fits all" approach and are used for all patients regardless of symptom type. In this project, the investigators propose to investigate whether a novel method of transcranial magnetic stimulation specifically reduces contamination/washing symptoms - one of the most common types of OCD.

Type: Interventional

Start Date: Jul 2022

open study

It is believed that targeted SERCA2a enzyme replacement in HFrEF patients will correct defective intracellular Ca2+ hemostasis, resulting in improved cardiac contractile function and energetics which will, in turn, translate to improved clinical outcomes. Additionally, it is hypothesized that correcting SERCA2a dysfunction will also improve coronary blood flow through correction of the impaired endothelium-dependent nitric oxide-mediated vasodilatation observed in heart failure.

Type: Interventional

Start Date: Sep 2021

open study

Researchers are creating real-time epidemiology registry to evaluate the efficacy of COVID-19 subject risk assessment scores based on recording of symptoms, biomarkers, chronic illness and mental health assessments with digital technology using wearables and mobile app tools. Researchers aim to study in Phase 1, epidemiological variations in COVID-19 presentation in both PCR positive and negative subjects in the registry. Assessment of variables, predictive modeling of variables that impact severity of COVID-19 positive and negative subjects and assessment of predictors for post COVID-19 complications. In Phase 2, 2700 subjects with COVID-19 positive test will be studied in the intervention group comparing ECL-19 vs placebo with primary end point of hospital admission assessment. Treatment strategy for PCR positive COVID-19 subjects in the registry who are in Stage I of the disease process with ECL-19 drug compared to placebo in reducing hospital admissions

Type: Observational [Patient Registry]

Start Date: Dec 2020

open study

The researchers aim to investigate the outcome (overall survival) of mothers who are diagnosed and/or treated for cancer during pregnancy. Furthermore they want to test the hypothesis that children who were exposed to cancer or cancer treatment (cytotoxic drugs, radiation therapy, targeted therapy,...) develop normally (neurologic and cardiologic examination).

Type: Observational [Patient Registry]

Start Date: Aug 2005

open study

The Investigators are studying the effect of an ACL reconstruction on return to play by capturing outcome measures and biomechanics information.

Type: Observational [Patient Registry]

Start Date: Feb 2024

open study

Previous evidence has indicated that resection for recurrent glioblastoma might benefit the prognosis of these patients in terms of overall survival. However, the demonstrated safety profile of this approach is contradictory in the literature and the specific benefits in distinct clinical and molecular patient subgroups remains ill-defined. The aim of this study, therefore, is to compare the effects of resection and best oncological treatment for recurrent glioblastoma as a whole and in clinically important subgroups. This study is an international, multicenter, prospective observational cohort study. Recurrent glioblastoma patients will undergo tumor resection or best oncological treatment at a 1:1 ratio as decided by the tumor board. Primary endpoints are: 1) proportion of patients with NIHSS (National Institute of Health Stroke Scale) deterioration at 6 weeks after surgery and 2) overall survival. Secondary endpoints are: 1) progression-free survival (PFS), 2) NIHSS deterioration at 3 months and 6 months after surgery, 3) health-related quality of life (HRQoL) at 6 weeks, 3 months, and 6 months after surgery, and 4) frequency and severity of Serious Adverse Events (SAEs) in each arm. Estimated total duration of the study is 5 years. Patient inclusion is 4 years, follow-up is 1 year. The study has been approved by the Medical Ethics Committee (METC Zuid-West Holland/Erasmus Medical Center; MEC-2020-0812). The results will be published in peer-reviewed academic journals and disseminated to patient organisations and media.

Type: Observational

Start Date: Jan 2023

open study

This study aims to advance the scientific understanding and potential future implementation of physical activity promotion by testing the efficacy of a phone-based app for increasing activity in insufficiently active patients with multiple sclerosis (MS).

Type: Interventional

Start Date: Feb 2024

open study

This prospective registry and longitudinal study that is designed to carefully measure details of prostate cancer patients' outcomes with focal therapy. The goal of which is to improve patient care.

Type: Observational [Patient Registry]

Start Date: Feb 2024

open study

This is an intermediate-size expanded access program (EAP) study. The purpose of this EAP is to provide continued access to LP352, an investigational drug product being investigated in participants with DEEs. The EAP study will allow continued treatment with LP352 for eligible participants diagnosed with treatment resistant DEEs who successfully completed an LP352 Clinical Trial (Enrollment by Invitation) or an immediate family member who has the exact same gene mutation resulting in the same DEE epilepsy syndrome phenotype or a patient who previously participated in the lorcaserin EAP.

Type: Expanded Access

open study

To test whether it is feasible to perform the 3D-EX functional predictive response bioassay in the context of patients with advanced/metastatic NSCLC receiving immune checkpoint inhibitors in the standard of care clinical setting.

Type: Observational

Start Date: Jul 2022

open study

This study is being conducted to investigate risk factors for disability progression in Multiple Sclerosis and related disorders (MSRD). The primary goal is to assess whether combining information from visual assessment, blood markers, as well as historical and ongoing longitudinal MRIs of the brain, orbit (the part of the skull where eyes are located), and/or spinal cord can predict changes in quantitative disability measures related to MSRD and neurological disease.

Type: Observational

Start Date: Nov 2021

open study

The primary objective of the clinical investigation is to assess the use of the Medtronic Valiant Thoracoabdominal Stent Graft System to repair thoracoabdominal aortic aneurysms in patients having appropriate anatomy. The primary intent of the study is to assess safety and preliminary effectiveness of the device. Additionally, the study will assess technical success and treatment success at each follow-up interval.

Type: Interventional

Start Date: Aug 2017

open study

The primary goals of this study are to use optical coherence tomography (OCT) angiography (blood vessel mapping) to: 1. diagnose the presence of new blood vessels in wet age-related macular degeneration (AMD) 2. evaluate patients undergoing treatment for wet AMD 3. determine if reduced flow to the choroid is a risk factor for developing wet AMD.

Type: Observational

Start Date: Sep 2014

open study

This study will evaluate the total blood flow in the retina and choroid (structures in the back of the eye) by Doppler optical coherence tomography (OCT) and OCT angiography. Angiography is mapping of the blood vessels. The purpose of measuring blood flow in the retina and choroid is to 1.) determine if rare diseases in these structures causes a change in blood flow compared to healthy eyes and 2.) find out if areas of changed blood flow line up with areas of damage that appear on conventional testing.

Type: Observational

Start Date: May 2014

open study

Enroll-HD is a longitudinal, observational, multinational study that integrates two former Huntington's disease (HD) registries-REGISTRY in Europe, and COHORT in North America and Australasia-while also expanding to include sites in Latin America. More than 30,000 participants have now enrolled into the study. With annual assessments and no end date, Enroll-HD has built a large and rich database of longitudinal clinical data and biospecimens that form the basis for studies developing tools and biomarkers for progression and prognosis, identifying clinically-relevant phenotypic characteristics, and establishing clearly defined endpoints for interventional studies. Periodic cuts of the database are now available to any interested researcher to use in their research - visit www.enroll-hd.org/for-researchers/access-data/ to learn more.

Type: Observational [Patient Registry]

Start Date: Jul 2012

open study