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496 matching studies

Condition of Interest
GENERATION HD2. A Study to Evaluate the Safety, Biomarkers, and Efficacy of Tominersen Compared With...
Huntington Disease
This study will evaluate the safety, biomarkers, and efficacy of tominersen compared with placebo in participants with prodromal and early manifest Huntington's Disease expand

This study will evaluate the safety, biomarkers, and efficacy of tominersen compared with placebo in participants with prodromal and early manifest Huntington's Disease

Type: Interventional

Start Date: Feb 2023

open study

A Study of Tucatinib With Trastuzumab and mFOLFOX6 Versus Standard of Care Treatment in First-line HER2+...
Colorectal Neoplasms
This study is being done to find out if tucatinib with other cancer drugs works better than standard of care to treat participants with HER2 positive colorectal cancer. This study will also determine what side effects happen when participants take this combination of drugs. A side effect is anything... expand

This study is being done to find out if tucatinib with other cancer drugs works better than standard of care to treat participants with HER2 positive colorectal cancer. This study will also determine what side effects happen when participants take this combination of drugs. A side effect is anything a drug does to the body besides treating your disease. Participants in this study have colorectal cancer that has spread through the body (metastatic) and/or cannot be removed with surgery (unresectable). Participants will be assigned randomly to the tucatinib group or standard of care group. The tucatinib group will get tucatinib, trastuzumab, and mFOLFOX6. The standard of care group will get either: - mFOLFOX6 alone, - mFOLFOX6 with bevacizumab, or - mFOLFOX6 with cetuximab mFOLFOX6 is a combination of multiple drugs. All of the drugs given in this study are used to treat this type of cancer.

Type: Interventional

Start Date: Oct 2022

open study

RA-PRO PRAGMATIC TRIAL
Rheumatoid Arthritis
The 2021 ACR RA treatment guideline, based on widely acknowledged low to moderate quality evidence, recommends switching to a non-tumor necrosis factor (TNFi) biologic (choose among existing medications, currently, rituximab, abatacept, tocilizumab, or sarilumab) or a targeted synthetic DMARD arm... expand

The 2021 ACR RA treatment guideline, based on widely acknowledged low to moderate quality evidence, recommends switching to a non-tumor necrosis factor (TNFi) biologic (choose among existing medications, currently, rituximab, abatacept, tocilizumab, or sarilumab) or a targeted synthetic DMARD arm (tsDMARD; choose among existing medications, currently, tofacitinib, baricitinib, upadacitinib) in patients with active RA despite the use of a TNFi-biologic. In practice, most patients receive another TNFi-biologic, i.e., a second TNFi-biologic first. This is not based on solid evidence, but on arbitrary algorithms often proposed by health insurance plans, and/or physician experience and habit (TNFis launched 22 yrs ago vs. the first tsDMARD 8 years ago vs. first non-TNF-biologic launched 17 years ago). This study will fill a critical knowledge gap by generating CER data for important PROs between these treatment options, switching to a non-TNFi biologic or a tsDMARD in patients with active RA despite the use of a TNFi-biologic.

Type: Interventional

Start Date: Sep 2021

open study

Clinical and Genetic Evaluation of Individuals With Undiagnosed Disorders Through the Undiagnosed Diseases...
Genetic Disease
Without an explanation for severe and sometimes life-threatening symptoms, patients and their families are left in a state of unknown. Many individuals find themselves being passed from physician to physician, undergoing countless and often repetitive tests in the hopes of finding answers and insight... expand

Without an explanation for severe and sometimes life-threatening symptoms, patients and their families are left in a state of unknown. Many individuals find themselves being passed from physician to physician, undergoing countless and often repetitive tests in the hopes of finding answers and insight about what the future may hold. This long and arduous journey to find a diagnosis does not end for many patients- the Office of Rare Diseases Research (ORDR) notes that 6% of individuals seeking their assistance have an undiagnosed disorder. In 2008, the National Institutes of Health (NIH) Undiagnosed Diseases Program (UDP) was established with the goal of providing care and answers for these individuals with mysterious conditions who have long eluded diagnosis. The NIH UDP is a joint venture of the NIH ORDR, the National Human Genome Research Institute Intramural Research Program (NHGRI-IRP), and the NIH Clinical Research Center (CRC) (1-3). The goals of the NIH UDP are to: (1) provide answers for patients with undiagnosed diseases; (2) generate new knowledge about disease mechanisms; (3) assess the application of new approaches to phenotyping and the use of genomic technologies; and (4) identify potential therapeutic targets, if possible. To date, the UDP has evaluated 3300 medical records and admitted 750 individuals with rare and undiagnosed conditions to the NIH Clinical Center. The NIH UDP has identified more than 70 rare disease diagnoses and several new conditions. The success of the NIH UDP prompted the NIH Common Fund to support the establishment of a network of medical research centers, the Undiagnosed Diseases Network (UDN), for fiscal years 2013-2020. The clinical sites will perform extensive phenotyping, genetic analyses, and functional studies of potential disease-causing variants. The testing performed on patients involves medically indicated studies intended to help reach a diagnosis, as well as research investigations that include a skin biopsy, blood draws, and DNA analysis. In addition, the UDN will further the goals of the UDP by permitting the sharing of personally identifiable phenotypic and genotypic information within the network. By sharing participant information and encouraging collaboration, the UDN hopes to improve the understanding of rare conditions and advance the diagnostic process and care for individuals with undiagnosed diseases.

Type: Observational

Start Date: Sep 2015

open study

Defining the Risk of Ventricular Tachycardia in Genetic Cardiomyopathies
Atrial Fibrillation Ventricular Tachycardia Premature Ventricular Contraction
The goal of this observational study is to determine if electrophysiologic mapping and cardiac MRI can help identify patients that have genetic forms of cardiomyopathy that are at high risk for development of dangerous ventricular arrhythmias. The investigators aim to study: 1. the prevalence... expand

The goal of this observational study is to determine if electrophysiologic mapping and cardiac MRI can help identify patients that have genetic forms of cardiomyopathy that are at high risk for development of dangerous ventricular arrhythmias. The investigators aim to study: 1. the prevalence and mechanism of inducible ventricular tachycardia 2. pace-mapping to define the site of origin of ventricular arrhythmias 3. voltage mapping to define low voltage scar substrate in the basal LV to determine the risk of development of ventricular arrhythmias in patients with genetic forms of cardiomyopathy. Participants will undergo cardiac MRI before their scheduled procedure and voltage mapping during their scheduled procedure as part of data collection.

Type: Observational [Patient Registry]

Start Date: Dec 2023

open study

A Study to Evaluate the Efficacy and Safety of Tulisokibart (MK-7240) in Participants With Moderate to...
Crohn's Disease
The purpose of this protocol is to evaluate the efficacy and safety of tulisokibart in participants with moderately to severely active Crohn's disease. Study 1's primary hypotheses are that at least 1 tulisokibart dose level is superior to Placebo in the proportion of participants achieving clinical... expand

The purpose of this protocol is to evaluate the efficacy and safety of tulisokibart in participants with moderately to severely active Crohn's disease. Study 1's primary hypotheses are that at least 1 tulisokibart dose level is superior to Placebo in the proportion of participants achieving clinical remission per Crohn's Disease Activity Index score (<150, US/FDA) or per stool frequency and abdominal pain score (EU/EMA) and in the proportion of participants achieving endoscopic response at Week 52 (US/FDA and EU/EMA), and that at least 1 tulisokibart dose level is superior to Placebo in the proportion of participants achieving clinical remission per Crohn's Disease Activity Index score (<150, US/FDA) or per stool frequency and abdominal pain score (EU/EMA) and in the proportion of participants achieving endoscopic response at Week 12 (US/FDA and EU/EMA). Study 2's primary hypothesis is that at least 1 tulisokibart dose level is superior to Placebo in the proportion of participants achieving clinical remission per Crohn's Disease Activity Index score (<150, US/FDA) or stool frequency and abdominal pain score (EU/EMA) and in the proportion of participants achieving endoscopic response at Week 12 (US/FDA and EU/EMA).

Type: Interventional

Start Date: Jun 2024

open study

A Study of TAR-200 Versus Intravesical Chemotherapy in Participants With Recurrent High-Risk Non-Muscle-Invasive...
Non-Muscle Invasive Bladder Neoplasms
The purpose of this study is to compare disease free survival (DFS) in participants with recurrence of papillary-only high-risk non-muscle-invasive bladder cancer (HR-NMIBC) within 1 year of last dose of Bacillus Calmette-Guérin (BCG) therapy and who refused or are unfit for Radical Cystectomy (RC),... expand

The purpose of this study is to compare disease free survival (DFS) in participants with recurrence of papillary-only high-risk non-muscle-invasive bladder cancer (HR-NMIBC) within 1 year of last dose of Bacillus Calmette-Guérin (BCG) therapy and who refused or are unfit for Radical Cystectomy (RC), receiving TAR-200 versus investigator's choice of single agent intravesical chemotherapy.

Type: Interventional

Start Date: Apr 2024

open study

A Study to Determine if BHV-7000 is Effective and Safe in Adults With Refractory Focal Onset Epilepsy
Focal Epilepsy
The purpose of this study is to determine whether BHV-7000 is effective in the treatment of refractory focal epilepsy. expand

The purpose of this study is to determine whether BHV-7000 is effective in the treatment of refractory focal epilepsy.

Type: Interventional

Start Date: Mar 2024

open study

AMX0035 and Progressive Supranuclear Palsy
Progressive Supranuclear Palsy PSP Neurodegenerative Diseases Atypical Parkinsonism
A35-009 (ORION) is a Phase 2b/3 trial to evaluate the efficacy and safety of AMX0035 in participants with Progressive Supranuclear Palsy (PSP), consisting of randomized, double blind placebo controlled phases, followed by an optional open-label extension phase. expand

A35-009 (ORION) is a Phase 2b/3 trial to evaluate the efficacy and safety of AMX0035 in participants with Progressive Supranuclear Palsy (PSP), consisting of randomized, double blind placebo controlled phases, followed by an optional open-label extension phase.

Type: Interventional

Start Date: Dec 2023

open study

Randomized, Double-blind Study of Efficacy and Safety of Bexotegrast (PLN-74809) for Idiopathic Pulmonary...
Idiopathic Pulmonary Fibrosis
A randomized, double-blind, dose-ranging, placebo-controlled study to evaluate the efficacy and safety of bexotegrast (PLN-74809) for the treatment of idiopathic pulmonary fibrosis (BEACON-IPF). expand

A randomized, double-blind, dose-ranging, placebo-controlled study to evaluate the efficacy and safety of bexotegrast (PLN-74809) for the treatment of idiopathic pulmonary fibrosis (BEACON-IPF).

Type: Interventional

Start Date: Nov 2023

open study

DCIS: RECAST Trial Ductal Carcinoma In Situ: Re-Evaluating Conditions for Active Surveillance Suitability...
Ductal Carcinoma in Situ
The goal of this trial is to see if active surveillance monitoring and hormonal therapy in patients diagnosed with ductal cell carcinoma in situ (DCIS), an early stage of breast cancer, can be an effective management of the disease. Participants will be asked to receive control hormonal therapy... expand

The goal of this trial is to see if active surveillance monitoring and hormonal therapy in patients diagnosed with ductal cell carcinoma in situ (DCIS), an early stage of breast cancer, can be an effective management of the disease. Participants will be asked to receive control hormonal therapy or an investigational hormonal therapy treatment. Participants will be asked to return for evaluation with MRI at three months and six months. Depending on the evaluation participants will have the option to continue on the treatment. If the evaluation suggests surgery is recommended, the participant will discontinue the study treatment and will undergo surgery. In addition to the treatment and MRI evaluation, participants will be asked to provide blood sample to understand their immune status, provide saliva sample for genetic testing, provide the study with a portion of the tissue or slides generated from tissue removed during surgery performed as part of their standard of care.

Type: Interventional

Start Date: Feb 2024

open study

High vs.Standard Dose Influenza Vaccine in Pediatric Solid Organ Transplant (SOT) Recipients
Immunization; Infection Transplantation Infection Influenza
Influenza virus is a significant pathogen in pediatric solid organ transplant (SOT) recipients. However, these individuals respond poorly to standard-dose (SD) inactivated influenza vaccine (IIV). Recent studies have investigated two strategies to overcome poor immune responses in SOT recipients:... expand

Influenza virus is a significant pathogen in pediatric solid organ transplant (SOT) recipients. However, these individuals respond poorly to standard-dose (SD) inactivated influenza vaccine (IIV). Recent studies have investigated two strategies to overcome poor immune responses in SOT recipients: (1) administration of high-dose (HD)-IIV compared to SD-IIV and (2) two doses of SD-IIV compared to one dose of SD-IIV in the same influenza season. One study compared HD-IIV vs. SD-IIV in adult SOT recipients and noted that HD-IIV was safe and more immunogenic; however, the median post-transplant period was 38 months. A phase I pediatric study comparing a single dose of HD-IIV vs. SD-IIV was safe with higher immunogenicity, but the study was limited by small sample size and median post-transplant vaccine administration was 26 months. In another phase II trial of adult SOT recipients, two doses of SD-IIV one month apart compared to one-dose of SD-IIV revealed modestly increased immunogenicity when given at a median of 18 months post-transplant. Therefore, these studies lack both evaluation in the early post-transplant period and substantive pediatric populations. Additionally, the administration of two-doses of HD-IIV in the same influenza season has not been evaluated in pediatric SOT recipients. Thus, the optimal immunization strategy for pediatric SOT recipients less than 24 months post-transplant is unknown. In addition, immunologic predictors and correlates of influenza vaccine immunogenicity in pediatric SOT recipients have not been well-defined. The central hypothesis of our proposal is that pediatric SOT recipients 1-23 months post-transplant who receive two doses of HD-quadrivalent inactivated influenza vaccine (QIV) will have similar safety but higher Hemagglutination Inhibition (HAI) geometric mean titers (GMTs) to influenza antigens compared to pediatric SOT recipients receiving two doses of SD-QIV.

Type: Interventional

Start Date: Sep 2024

open study

XVIVO Heart Perfusion System (XHPS) With Supplemented XVIVO Heart Solution (SXHS)
Heart Failure Transplant; Failure, Heart
The purpose of this study is to evaluate if Non-Ischemic Heart Preservation (NIHP) of extended criteria donor hearts using the XVIVO Heart Preservation System (XHPS) is a safe and effective way to preserve and transport hearts for transplantation. expand

The purpose of this study is to evaluate if Non-Ischemic Heart Preservation (NIHP) of extended criteria donor hearts using the XVIVO Heart Preservation System (XHPS) is a safe and effective way to preserve and transport hearts for transplantation.

Type: Interventional

Start Date: Oct 2023

open study

A Study of Milvexian in Participants After a Recent Acute Coronary Syndrome
Acute Coronary Syndrome
The purpose of this study is to evaluate that milvexian is superior to placebo, in addition to standard-of-care, in reducing the risk of major adverse cardiovascular event (MACE) (the composite of cardiovascular [CV] death, myocardial infarction [MI], and ischemic stroke). expand

The purpose of this study is to evaluate that milvexian is superior to placebo, in addition to standard-of-care, in reducing the risk of major adverse cardiovascular event (MACE) (the composite of cardiovascular [CV] death, myocardial infarction [MI], and ischemic stroke).

Type: Interventional

Start Date: Apr 2023

open study

Study of Edecesertib in Participants With Cutaneous Lupus Erythematosus (CLE)
Cutaneous Lupus Erythematosus (CLE)
The goal of this clinical study is to test how edecesertib (formerly known as GS-5718) can be useful in treating Cutaneous Lupus Erythematosus (CLE) in participants with CLE. Information on what is happening in the body relating to CLE, how the body processes, is affected by and responds to the study... expand

The goal of this clinical study is to test how edecesertib (formerly known as GS-5718) can be useful in treating Cutaneous Lupus Erythematosus (CLE) in participants with CLE. Information on what is happening in the body relating to CLE, how the body processes, is affected by and responds to the study drug, and any study drug side effects will also be collected in this study.

Type: Interventional

Start Date: Apr 2023

open study

Efficacy and Safety of Tezepelumab in Patients With Eosinophilic Esophagitis
Eosinophilic Esophagitis
A randomized, double-blind, placebo-controlled multicenter, phase 3 study to evaluate the efficacy and safety of tezepelumab administered subcutaneously (SC) using an accessorized pre-filled syringe (APFS) versus placebo in adult and adolescent patients with eosinophilic esophagitis (EoE). expand

A randomized, double-blind, placebo-controlled multicenter, phase 3 study to evaluate the efficacy and safety of tezepelumab administered subcutaneously (SC) using an accessorized pre-filled syringe (APFS) versus placebo in adult and adolescent patients with eosinophilic esophagitis (EoE).

Type: Interventional

Start Date: Nov 2022

open study

Safety and Preliminary Anti-Tumor Activity of TYRA-300 in Advanced Urothelial Carcinoma and Other Solid...
Locally Advanced Urothelial Carcinoma Metastatic Urothelial Carcinoma Solid Tumor Urothelial Carcinoma Solid Tumor, Adult
The purpose of this study is to evaluate the safety, tolerability, pharmacokinetics (PK), and preliminary antitumor activity of TYRA-300 in cancers with FGFR3 activating gene alterations, including locally advanced/metastatic urothelial carcinoma of the bladder and urinary tract and other advanced... expand

The purpose of this study is to evaluate the safety, tolerability, pharmacokinetics (PK), and preliminary antitumor activity of TYRA-300 in cancers with FGFR3 activating gene alterations, including locally advanced/metastatic urothelial carcinoma of the bladder and urinary tract and other advanced solid tumors.

Type: Interventional

Start Date: Nov 2022

open study

Split Course Adaptive Radiation Therapy With Pembrolizumab With/Without Chemotherapy for Treating Stage...
Lung Non-Small Cell Carcinoma Stage IV Lung Cancer AJCC v8 Stage III Lung Cancer
This phase I/II trial tests the safety and efficacy of split-course adaptive radiation therapy in combination with immunotherapy with or without chemotherapy for the treatment of patients with stage IV lung cancer or lung cancer that that has spread to nearby tissue or lymph nodes (locally advanced).... expand

This phase I/II trial tests the safety and efficacy of split-course adaptive radiation therapy in combination with immunotherapy with or without chemotherapy for the treatment of patients with stage IV lung cancer or lung cancer that that has spread to nearby tissue or lymph nodes (locally advanced). Radiation therapy is a standard cancer treatment that uses high energy rays to kill cancer cells and shrink tumors. Split-course adaptive radiation therapy uses patient disease response to alter the intensity of the radiation therapy. Immunotherapy with monoclonal antibodies such as pembrolizumab, ipilimumab, cemiplimab, atezolizumab or nivolumab may help the body's immune system attack the cancer, and may interfere with the ability of tumor cells to grow and spread. Chemotherapy drugs like carboplatin, pemetrexed, and paclitaxel work in different ways to stop the growth of cancer cells, either by killing the cells, by stopping them from dividing, or by stopping them from spreading. Giving split-course adaptive radiation therapy with standard treatments like immunotherapy and chemotherapy may be more effective at treating stage IV or locally advanced lung cancer than giving them alone.

Type: Interventional

Start Date: May 2023

open study

Mismatched Related Donor Versus Matched Unrelated Donor Stem Cell Transplantation for Children, Adolescents,...
Acute Lymphoblastic Leukemia Acute Myeloid Leukemia Mixed Phenotype Acute Leukemia Myelodysplastic Syndrome
This phase III trial compares hematopoietic (stem) cell transplantation (HCT) using mismatched related donors (haploidentical [haplo]) versus matched unrelated donors (MUD) in treating children, adolescents, and young adults with acute leukemia or myelodysplastic syndrome (MDS). HCT is considered... expand

This phase III trial compares hematopoietic (stem) cell transplantation (HCT) using mismatched related donors (haploidentical [haplo]) versus matched unrelated donors (MUD) in treating children, adolescents, and young adults with acute leukemia or myelodysplastic syndrome (MDS). HCT is considered standard of care treatment for patients with high-risk acute leukemia and MDS. In HCT, patients are given very high doses of chemotherapy and/or radiation therapy, which is intended to kill cancer cells that may be resistant to more standard doses of chemotherapy; unfortunately, this also destroys the normal cells in the bone marrow, including stem cells. After the treatment, patients must have a healthy supply of stem cells reintroduced or transplanted. The transplanted cells then reestablish the blood cell production process in the bone marrow. The healthy stem cells may come from the blood or bone marrow of a related or unrelated donor. If patients do not have a matched related donor, doctors do not know what the next best donor choice is. This trial may help researchers understand whether a haplo related donor or a MUD HCT for children with acute leukemia or MDS is better or if there is no difference at all.

Type: Interventional

Start Date: Mar 2023

open study

CoQ10 and Exercise for Mitochondrial Dysfunction in Advance Kidney Disease
End Stage Renal Disease
Frailty and sarcopenia are modifiable risk factors for morbidity and mortality in patients with ESRD. Exercise is the recommended intervention to prevent frailty and sarcopenia, however, many clinical trials have shown limited clinical improvement in muscle mass and physical function. We propose that... expand

Frailty and sarcopenia are modifiable risk factors for morbidity and mortality in patients with ESRD. Exercise is the recommended intervention to prevent frailty and sarcopenia, however, many clinical trials have shown limited clinical improvement in muscle mass and physical function. We propose that mitochondrial dysfunction is one of the deterrents to the effectiveness of the exercise. We plan to evaluate the additive effect of HIIT and CoQ10, a mitochondrial-targeted therapy, on mitochondrial function and physical performance. Understanding the interplay among CoQ10, exercise, and mitochondrial function will identify novel mechanisms to improve the efficiency of exercise. This will also serve to prevent frailty, sarcopenia, and muscle dysfunction in patients with ESRD.

Type: Interventional

Start Date: Jun 2023

open study

Trial of Indication-Based Transfusion of Red Blood Cells in ECMO
Extracorporeal Membrane Oxygenation Red Blood Cell Transfusion Organ Failure, Multiple
TITRE - Trial of Indication-based Transfusion of Red Blood Cells in ECMO, is a multicenter, prospective, randomized clinical trial. The overarching goal of TITRE is to determine whether restricting red blood cell (RBC) transfusion according to an indication-based strategy for those with bleeding and/or... expand

TITRE - Trial of Indication-based Transfusion of Red Blood Cells in ECMO, is a multicenter, prospective, randomized clinical trial. The overarching goal of TITRE is to determine whether restricting red blood cell (RBC) transfusion according to an indication-based strategy for those with bleeding and/or deficit of tissue oxygen delivery, compared with transfusion based on center-specific hemoglobin or hematocrit thresholds, can reduce organ dysfunction and improve later neurodevelopment in critically ill children receiving Extracorporeal Membrane Oxygenation (ECMO) support.

Type: Interventional

Start Date: Apr 2023

open study

Randomized Trial of Sedative Choice for Intubation
Acute Respiratory Failure
Among critically ill adults undergoing emergency tracheal intubation, one in five experience hypotension, cardiac arrest, or death. The sedatives used to rapidly induce anesthesia for emergency tracheal intubation have been hypothesized to effect cardiovascular complications and patient outcomes,... expand

Among critically ill adults undergoing emergency tracheal intubation, one in five experience hypotension, cardiac arrest, or death. The sedatives used to rapidly induce anesthesia for emergency tracheal intubation have been hypothesized to effect cardiovascular complications and patient outcomes, but the optimal sedative medication for intubation of critically ill adults remains unknown. Ketamine and etomidate are the two most commonly used sedatives during intubation of critically ill adults. Data from a randomized clinical trial are urgently needed to determine the effect of ketamine versus etomidate on cardiovascular complications and clinical outcomes of emergency tracheal intubation.

Type: Interventional

Start Date: Apr 2022

open study

High Vs. Standard Dose Influenza Vaccine in Lung Allograft Recipients
Immunization; Infection Transplantation Infection Influenza
Lung allograft recipients have a higher burden of influenza disease and greater associated morbidity and mortality compared with healthy controls. Induction and early maintenance immunosuppression is thought to impair immunogenicity to standard dose inactivated influenza vaccine. This early post-transplant... expand

Lung allograft recipients have a higher burden of influenza disease and greater associated morbidity and mortality compared with healthy controls. Induction and early maintenance immunosuppression is thought to impair immunogenicity to standard dose inactivated influenza vaccine. This early post-transplant period is when immunity is most desirable, since influenza disease during this time frame is associated with adverse consequences. Thus, strategies to reduce severe influenza disease in this highly susceptible population are critical. No trials in lung transplant recipients have evaluated two doses of HD-IIV within the same influenza season as a strategy to improve immunogenicity and durability of influenza prevention. Furthermore, no influenza vaccine trials have focused on enrollment of subjects at early post-transplant timepoints. Very few studies have been performed in solely lung allograft recipients. Immunosuppression intensity is highest in lung patients, thereby limiting comparisons to recipients of heart, liver, and kidney transplants. Therefore, studies to assess both HD-IIV and two-dose strategies in the same influenza season in post-lung transplant recipients are greatly needed. The central hypothesis of our proposal is that lung allograft recipients who are 1-35 months post-transplant and receiving two doses of HD-quadrivalent inactivated influenza vaccine (QIV) will have higher HAI geometric mean titers (GMT) to influenza antigens compared to those receiving two doses of SD-QIV. To test this hypothesis and address the above critical knowledge gaps, we propose to conduct a phase II, multi-center, randomized, double-blind, controlled immunogenicity and safety trial comparing the administration of two doses of HD-QIV to two doses of SD-QIV in lung allograft recipients 1-35 months post-transplant. The results of this clinical trial will address significant knowledge gaps regarding influenza vaccine strategies (e.g., one vs. two doses and HD-QIV vs. SD-QIV) and immune responses in lung transplant recipients and will guide vaccine recommendations during the post-transplant period.

Type: Interventional

Start Date: Nov 2022

open study

Gut Microbiota in Metabolic Surgery
Bariatric Surgery Candidate Cardiovascular Diseases Type 2 Diabetes Dyslipidemias Hypertension
Metabolic surgery is an emerging option to treat obesity-related metabolic diseases (e.g., type 2 diabetes) and prevent cardiovascular disease (CVD). Metabolic surgery can profoundly alter the gut microbiota; meanwhile, gut microbiota may affect surgical outcomes. Longitudinal studies that examined... expand

Metabolic surgery is an emerging option to treat obesity-related metabolic diseases (e.g., type 2 diabetes) and prevent cardiovascular disease (CVD). Metabolic surgery can profoundly alter the gut microbiota; meanwhile, gut microbiota may affect surgical outcomes. Longitudinal studies that examined pre- to post-surgery changes in gut microbiota and its relation to cardiometabolic health after surgery are limited. Furthermore, few studies have included African Americans, a population with high rates of cardiometabolic diseases. The investigators aim to fill these research gaps by establishing a longitudinal, observational study of metabolic surgery patients and applying multi-omics to identify stool, blood, and/or tissue microbial features related to post-surgery cardiometabolic outcomes. In the current study, the investigators plan to enroll up to 300 patients who undergo metabolic surgery at Vanderbilt University Medical Center and follow them for up to 10 years after surgery. Fasting blood and stool samples will be collected at pre-surgery and 3-month, 1-year, 2-year, and 3-year post-surgery clinical visits. Tissue samples (e.g., biopsies of the liver and adipose and remnants of the stomach) will be collected during operation. Meanwhile, participants will complete a REDCap survey at baseline and 1-year, 2-year, and 3-year post-surgery. Participants' electronic medical records will be used to obtain additional information and facilitate long-term follow-up. The investigators will evaluate pre- to post-surgery changes in the fecal microbiome and fecal and blood levels of metabolites and proteins and the associations of microbiome, metabolites, and proteins with cardiometabolic improvements after surgery. This study will advance our understanding of the role of gut microbiota in metabolic surgery, which may translate into novel approaches to identify and treat obese patients for better cardiometabolic health.

Type: Observational [Patient Registry]

Start Date: Aug 2021

open study

The Pediatric Acute Leukemia (PedAL) Screening Trial - A Study to Test Bone Marrow and Blood in Children...
Acute Lymphoblastic Leukemia Acute Myeloid Leukemia Acute Myeloid Leukemia Post Cytotoxic Therapy Juvenile Myelomonocytic Leukemia Mixed Phenotype Acute Leukemia
This study aims to use clinical and biological characteristics of acute leukemias to screen for patient eligibility for available pediatric leukemia sub-trials. Testing bone marrow and blood from patients with leukemia that has come back after treatment or is difficult to treat may provide information... expand

This study aims to use clinical and biological characteristics of acute leukemias to screen for patient eligibility for available pediatric leukemia sub-trials. Testing bone marrow and blood from patients with leukemia that has come back after treatment or is difficult to treat may provide information about the patient's leukemia that is important when deciding how to best treat it, and may help doctors find better ways to diagnose and treat leukemia in children, adolescents, and young adults.

Type: Interventional

Start Date: Apr 2022

open study