172 matching studies

Sponsor Condition of Interest
Multi-institutional Prospective Research of Expanded Multi-antigen Specifically Oriented Lymphocyte1
Catherine Bollard Relapsed/Refractory Hematopoietic Malignancies, Acute Myeloid Leukemia and MDS
This Phase I dose-escalation trial is designed to evaluate the safety of administering rapidly -generated tumor multi-antigen associated -specific cytotoxic T lymphocytes, to HSCT recipients (Arm A) or future HSCT recipients (Arm B) for the treatment of high-risk or relapsed or refractory hematopoi1 expand

This Phase I dose-escalation trial is designed to evaluate the safety of administering rapidly -generated tumor multi-antigen associated -specific cytotoxic T lymphocytes, to HSCT recipients (Arm A) or future HSCT recipients (Arm B) for the treatment of high-risk or relapsed or refractory hematopoietic malignancies. In addition to safety, this study will also evaluate if event-free survival (EFS) is improved with TAA-T administration at six months after HSCT for patients with high risk AML and MDS (Arm C).

Type: Interventional

Start Date: Jan 2015

open study

A Study to See if Tolvaptan Can Delay Dialysis in Infants and Children Who at Enrollment Are 28 Day1
Otsuka Pharmaceutical Development & Commercialization, Inc. Autosomal Recessive Polycystic Kidney Disease (ARPKD)
The primary objective of this study is to evaluate the effect of tolvaptan on the need for renal replacement therapy in pediatric subjects with autosomal recessive polycystic kidney disease (ARPKD) expand

The primary objective of this study is to evaluate the effect of tolvaptan on the need for renal replacement therapy in pediatric subjects with autosomal recessive polycystic kidney disease (ARPKD)

Type: Interventional

Start Date: Jul 2022

open study

Targeted Reversal of Inflammation in Pediatric Sepsis-induced MODS
Nationwide Children's Hospital Pediatric Sepsis-induced Multiple Organ Dysfunction Syndrome (MODS)
The TRIPS study is a prospective, multi-center, double-blind, adaptively randomized, placebo-controlled clinical trial of the drug anakinra for reversal of moderate to severe hyperinflammation in children with sepsis-induced multiple organ dysfunction syndrome (MODS). expand

The TRIPS study is a prospective, multi-center, double-blind, adaptively randomized, placebo-controlled clinical trial of the drug anakinra for reversal of moderate to severe hyperinflammation in children with sepsis-induced multiple organ dysfunction syndrome (MODS).

Type: Interventional

Start Date: Jun 2022

open study

A Study to Compare Early Use of Vinorelbine and Maintenance Therapy for Patients With High Risk Rha1
Children's Oncology Group Alveolar Rhabdomyosarcoma Botryoid-Type Embryonal Rhabdomyosarcoma Embryonal Rhabdomyosarcoma Metastatic Embryonal Rhabdomyosarcoma Metastatic Rhabdomyosarcoma
This phase III trial compares the safety and effect of adding vinorelbine to vincristine, dactinomycin, and cyclophosphamide (VAC) for the treatment of patients with high risk rhabdomyosarcoma (RMS). High risk refers to cancer that is likely to recur (come back) after treatment or spread to other p1 expand

This phase III trial compares the safety and effect of adding vinorelbine to vincristine, dactinomycin, and cyclophosphamide (VAC) for the treatment of patients with high risk rhabdomyosarcoma (RMS). High risk refers to cancer that is likely to recur (come back) after treatment or spread to other parts of the body. This study will also examine if adding maintenance therapy after VAC therapy, with or without vinorelbine, will help get rid of the cancer and/or lower the chance that the cancer comes back. Vinorelbine and vincristine are in a class of medications called vinca alkaloids. They work by stopping cancer cells from growing and dividing and may kill them. Dactinomycin is a type of antibiotic that is only used in cancer chemotherapy. It works by damaging the cell's deoxyribonucleic acid (DNA) and may kill cancer cells. Cyclophosphamide is in a class of medications called alkylating agents. It works by damaging the cell's DNA and may kill cancer cells. It may also lower the body's immune response. Vinorelbine, vincristine, dactinomycin and cyclophosphamide are chemotherapy medications that 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. This trial may have the potential to eliminate rhabdomyosarcoma for a long time or for the rest of patient's life.

Type: Interventional

Start Date: Sep 2021

open study

A Study With Eptinezumab in Adolescents (12-17 Years) With Chronic Migraine
H. Lundbeck A/S Chronic Migraine in Children
To find out if eptinezumab is better than placebo (normal saline solution) in lowering the number of days with migraine in young people ages 12 to 17 with chronic migraine. expand

To find out if eptinezumab is better than placebo (normal saline solution) in lowering the number of days with migraine in young people ages 12 to 17 with chronic migraine.

Type: Interventional

Start Date: Jun 2021

open study

A Study of Revumenib in Combination With Chemotherapy for Patients Diagnosed With Relapsed or Refra1
Children's Oncology Group Recurrent Acute Leukemia of Ambiguous Lineage Recurrent Acute Lymphoblastic Leukemia Recurrent Acute Myeloid Leukemia Due to Lineage Switch From Acute Leukemia of Ambiguous Lineage Recurrent Acute Myeloid Leukemia Due to Lineage Switch From B Acute Lymphoblastic Leukemia, KMT2A-Rearranged Recurrent Acute Myeloid Leukemia Due to Lineage Switch From Mixed Phenotype Acute Leukemia
This phase II trial tests the safety and best dose of revumenib in combination with chemotherapy, and evaluates whether this treatment improves the outcome in infants and young children who have leukemia that has come back (relapsed) or does not respond to treatment (refractory) and is associated w1 expand

This phase II trial tests the safety and best dose of revumenib in combination with chemotherapy, and evaluates whether this treatment improves the outcome in infants and young children who have leukemia that has come back (relapsed) or does not respond to treatment (refractory) and is associated with a KMT2A (MLL) gene rearrangement (KMT2A-R). Leukemia is a cancer of the white blood cells, where too many underdeveloped (abnormal) white blood cells, called "blasts", are found in the bone marrow, which is the soft, spongy center of the bones that produces the three major blood cells: white blood cells to fight infection; red blood cells that carry oxygen; and platelets that help blood clot and stop bleeding. The blasts crowd out the normal blood cells in the bone marrow and spread to the blood. They can also spread to the brain, spinal cord, and/or other organs of the body. The leukemia cells of some children have a genetic change in which a gene (KMT2A) is broken and combined with other genes that typically do not interact with one another; this is called "rearranged". This genetic rearrangement alters how other genes are turned on or off in the cell, turning on genes that drive the development of leukemia. Patients with KMT2A rearrangement have higher risk for cancer coming back after treatment. Revumenib is an oral medicine that directly targets the changes that occur in a cell with a KMT2A rearrangement and has been shown to specifically kill these leukemia cells in preclinical laboratory settings and in animals. Drugs used in chemotherapy, such as vincristine, prednisone, asparaginase, fludarabine and cytarabine 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. This trial is being done to find out if the combination of revumenib and chemotherapy would be safe and/or effective in treating infants and young children with relapsed or refractory KMT2A-R leukemia.

Type: Interventional

Start Date: Jan 2024

open study

TSC Biosample Repository and Natural History Database
National Tuberous Sclerosis Association Tuberous Sclerosis Lymphangioleiomyomatosis
The TSC Biosample Repository collects and stores samples of blood, DNA, and tissues that scientists can request to use in their research. The samples we collect are all linked to clinical data in the TSC Natural History Database. The TSC Natural History Database captures clinical data to document t1 expand

The TSC Biosample Repository collects and stores samples of blood, DNA, and tissues that scientists can request to use in their research. The samples we collect are all linked to clinical data in the TSC Natural History Database. The TSC Natural History Database captures clinical data to document the impact of the disease on a person's health over his or her lifetime. This data may be collected retrospectively or prospectively.

Type: Observational [Patient Registry]

Start Date: Jan 2016

open study

Feasibility/Acceptability of Attentional-Control Training in Survivors
Children's National Research Institute Pediatric Cancer Pediatric ALL Pediatric Brain Tumor Attention Difficulties Cognitive Deficit in Attention
This is a multicenter pilot randomized controlled trial, with an active control condition, of the feasibility, acceptability, and preliminary efficacy of EndeavorRx in a cohort of survivors of acute lymphoblastic leukemia or brain tumor ages 8-16 who are > 1 year from the end of therapy. expand

This is a multicenter pilot randomized controlled trial, with an active control condition, of the feasibility, acceptability, and preliminary efficacy of EndeavorRx in a cohort of survivors of acute lymphoblastic leukemia or brain tumor ages 8-16 who are > 1 year from the end of therapy.

Type: Interventional

Start Date: Jun 2023

open study

Chemotherapy for the Treatment of Patients With Newly Diagnosed Very Low-Risk and Low Risk Fusion N1
Children's Oncology Group Embryonal Rhabdomyosarcoma Fusion-Negative Alveolar Rhabdomyosarcoma Spindle Cell/Sclerosing Rhabdomyosarcoma
Rhabdomyosarcoma is a type of cancer that occurs in the soft tissues in the body. This phase III trial aims to maintain excellent outcomes in patients with very low risk rhabdomyosarcoma (VLR-RMS) while decreasing the burden of therapy using treatment with 24 weeks of vincristine and dactinomycin (1 expand

Rhabdomyosarcoma is a type of cancer that occurs in the soft tissues in the body. This phase III trial aims to maintain excellent outcomes in patients with very low risk rhabdomyosarcoma (VLR-RMS) while decreasing the burden of therapy using treatment with 24 weeks of vincristine and dactinomycin (VA) and examines the use of centralized molecular risk stratification in the treatment of rhabdomyosarcoma. Another aim of the study it to find out how well patients with low risk rhabdomyosarcoma (LR-RMS) respond to standard chemotherapy when patients with VLR-RMS and patients who have rhabdomyosarcoma with DNA mutations get separate treatment. Finally, this study examines the effect of therapy intensification in patients who have RMS cancer with DNA mutations to see if their outcomes can be improved.

Type: Interventional

Start Date: Aug 2022

open study

Evaluation of Immunologic Response Following COVID-19 Vaccination in Children, Adolescents, and You1
Children's Oncology Group COVID-19 Infection Hematopoietic and Lymphatic System Neoplasm Malignant Solid Neoplasm
This study evaluates immunologic response following COVID-19 vaccination in children, adolescents, and young adults with cancer. Vaccines work by stimulating the body's immune cells to respond against a specific disease. The immune response produces protection from that disease. Effects from cancer1 expand

This study evaluates immunologic response following COVID-19 vaccination in children, adolescents, and young adults with cancer. Vaccines work by stimulating the body's immune cells to respond against a specific disease. The immune response produces protection from that disease. Effects from cancer and from treatments for cancer can reduce the body's natural disease fighting ability (called immunity). Factors such as vaccine type, timing of vaccine dosing related to treatment for cancer and number of vaccine doses or "boosts" (extra vaccine shots) may strengthen or diminish the body's protective immune response. This study may help researchers learn more about how the body's immune system responds to the COVID-19 vaccine when the vaccination is given during or after cancer treatment.

Type: Observational

Start Date: Apr 2022

open study

Rollover Study for Patients With Sickle Cell Disease Who Have Completed a Prior Novartis-Sponsored1
Novartis Pharmaceuticals Sickle Cell Disease
This is a multi-center multi-national rollover study to allow continued access to crizanlizumab for patients with sickle cell disease (SCD) who are on crizanlizumab treatment in a Novartis-sponsored study (parent study) and are benefiting from the treatment as judged by the investigator. expand

This is a multi-center multi-national rollover study to allow continued access to crizanlizumab for patients with sickle cell disease (SCD) who are on crizanlizumab treatment in a Novartis-sponsored study (parent study) and are benefiting from the treatment as judged by the investigator.

Type: Interventional

Start Date: Jun 2021

open study

Oral Ifetroban in Subjects With Duchenne Muscular Dystrophy
Cumberland Pharmaceuticals Duchenne Muscular Dystrophy Cardiomyopathy Cardiomyopathy, Dilated
Duchenne muscular dystrophy (DMD) is a devastating X-linked disease which leads to loss of ambulation between ages 7 and 13, respiratory failure and cardiomyopathy (CM) at any age, and inevitably premature death of affected young men in their late twenties. DMD is the most common fatal genetic diso1 expand

Duchenne muscular dystrophy (DMD) is a devastating X-linked disease which leads to loss of ambulation between ages 7 and 13, respiratory failure and cardiomyopathy (CM) at any age, and inevitably premature death of affected young men in their late twenties. DMD is the most common fatal genetic disorder diagnosed in childhood. It affects approximately 1 in every 3,500 live male births across all races and cultures, and results in 20,000 new cases each year worldwide.Significant advances in respiratory care have unmasked CM as the leading cause of death. As there are yet no specific cardiac treatments to extend life, the current study aims to address this unmet medical need using a new therapeutic strategy for patients with DMD. Funding Source - FDA OOPD

Type: Interventional

Start Date: Oct 2020

open study

A Study to Evaluate Next-Generation Sequencing (NGS) Testing and Monitoring of B-cell Recovery to G1
National Cancer Institute (NCI) B-All Acute Lymphoblastic Leukemia
Background: Chimeric antigen receptor T-cell (CART) therapy is a form of immunotherapy which can be used to treat people with relapsed B-ALL. For those who achieve remission after CART alone, it may cure up to 50% of people who receive this therapy. However, for people who relapse after CART, it c1 expand

Background: Chimeric antigen receptor T-cell (CART) therapy is a form of immunotherapy which can be used to treat people with relapsed B-ALL. For those who achieve remission after CART alone, it may cure up to 50% of people who receive this therapy. However, for people who relapse after CART, it can be hard to achieve remission again. In patients where CART fails, stem cell transplant (HCT) can be used to prevent relapse and achieve cure. But HCT can cause serious side effects. Better testing is needed to distinguish people who can be cured with CART alone from people who may also need to have HCT. Objective: To see if the use of a series of blood and bone marrow tests at regular intervals can help monitor for B-ALL relapse after CART therapy. Eligibility: People aged 1 to 25 years with B-ALL who have had CART therapy within the past 42 days. They must never have had a blood stem cell transplant; they must also have no measurable blood cancer cells. Design: Participants will visit the clinic every 2 weeks starting 42 days after they receive CART therapy. Each visit will be about the same amount of time as a regular clinic visit. about 8 hours. Participants will have blood drawn for testing on each visit. Bone marrow biopsy/aspirate will be done during 4 of the visits at routine timepoints after CART. A needle will be inserted to draw a sample of tissue from inside the bone in the hip. A small amount of blood and tissue will be tested with ClonoSEQ and to evaluate for normal B-cells side by side with the standard tests. The combined testing may help determine whether participants are eligible for HCT and/or at risk of relapse after CART. Participants will be in the study for 1 year

Type: Interventional

Start Date: Nov 2024

open study

Study of Efficacy, Safety and Tolerability of Remibrutinib in Adult Participants With an Allergy to1
Novartis Pharmaceuticals Allergy, Peanut
A study to evaluate the safety, efficacy and tolerability of remibrutinib at three doses versus placebo in adult participants who have a confirmed allergy to peanuts. The efficacy will be measured by the ability of participants to tolerate increasing doses of peanut protein during an oral food chal1 expand

A study to evaluate the safety, efficacy and tolerability of remibrutinib at three doses versus placebo in adult participants who have a confirmed allergy to peanuts. The efficacy will be measured by the ability of participants to tolerate increasing doses of peanut protein during an oral food challenge after 1 month of study treatment.

Type: Interventional

Start Date: Oct 2022

open study

A Study of Cabozantinib As a Maintenance Agent to Prevent Progression or Recurrence in High-Risk Pe1
Nationwide Children's Hospital Neuroblastoma Sarcoma
This study will expand the types of pediatric cancers being evaluated for response to cabozantinib. The current COG study is restricted to Ewing sarcoma, osteosarcoma, rhabdomyosarcoma, Wilms tumor, and a handful of uncommon tumors. The proposed study will extend this evaluation to tumors that have1 expand

This study will expand the types of pediatric cancers being evaluated for response to cabozantinib. The current COG study is restricted to Ewing sarcoma, osteosarcoma, rhabdomyosarcoma, Wilms tumor, and a handful of uncommon tumors. The proposed study will extend this evaluation to tumors that have been shown to either express known targets of cabozantinib or with preclinical evidence of efficacy, including specifically neuroblastomas. These tumors have high morbidity and mortality, particularly in the relapse setting, and few or no proven therapeutic options. As such, evaluation of cabozantinib in these studies is warranted. The study hypothesizes that use of cabozantinib in patients with ultra-high-risk pediatric solid tumors with minimal disease burden, as defined in the inclusion criteria below, can prevent and/or slow recurrent tumor formation in pediatric solid tumors and thereby significantly extend the period of disease control and/or induce a durable cure.

Type: Interventional

Start Date: Jul 2022

open study

Safety and Pharmacokinetics Evaluation of Fostemsavir + (OBT) in HIV-1 Infected Children and Adoles1
PENTA Foundation HIV Infections with Multi Drug Resistant Virus
In the SHIELD study, the study sponsor seeks to assess safety, PK and antiviral activity for children and adolescents with dual or triple class resistance. It will also assess the acceptability and swallowability of formulation among the pediatric population. The dose selection of FTR for children1 expand

In the SHIELD study, the study sponsor seeks to assess safety, PK and antiviral activity for children and adolescents with dual or triple class resistance. It will also assess the acceptability and swallowability of formulation among the pediatric population. The dose selection of FTR for children and adolescents ≥20kg utilized a population pharmacokinetic (POP PK) model-based approach to achieve similar adult TMR exposures following FTR 600mg BID administration with combination therapy that was demonstrated to be safe and effective in the FTR Phase 3 BRIGHTE study in HTE patients.

Type: Interventional

Start Date: Jun 2022

open study

Cobimetinib in Refractory Langerhans Cell Histiocytosis (LCH), and Other Histiocytic Disorders
Carl Allen Langerhan's Cell Histiocytosis Juvenile Xanthogranuloma Erdheim-Chester Disease Rosai Dorfman Disease Neuro-Degenerative Disease
This is a research study of a drug called cobimetinib in children and adults diagnosed with Langerhans cell histiocytosis (LCH), and other histiocytic disorders that has returned or does not respond to treatment. Cobimetinib blocks activation of a protein called Mitogen-activated protein kinase (ME1 expand

This is a research study of a drug called cobimetinib in children and adults diagnosed with Langerhans cell histiocytosis (LCH), and other histiocytic disorders that has returned or does not respond to treatment. Cobimetinib blocks activation of a protein called Mitogen-activated protein kinase (MEK) that is part of incorrect growth signals in histiocytosis cells. Four different groups of patients will be enrolled.

Type: Interventional

Start Date: Apr 2021

open study

Molecular Analysis of Samples From Patients With Diffuse Intrinsic Pontine Glioma and Brainstem Gli1
Children's National Research Institute Diffuse Intrinsic Pontine Glioma Brainstem Glioma
The purpose of this study is to prospectively collect specimens from pediatric patients with diffuse intrinsic pontine glioma or brainstem glioma, either during therapy or at autopsy, in order to characterize the molecular abnormalities of this tumor. expand

The purpose of this study is to prospectively collect specimens from pediatric patients with diffuse intrinsic pontine glioma or brainstem glioma, either during therapy or at autopsy, in order to characterize the molecular abnormalities of this tumor.

Type: Observational

Start Date: Apr 2010

open study

Development of a Therapeutic Endpoint in Pediatric Rheumatologic Conditions
Children's National Research Institute Juvenile Idiopathic Arthritis Systemic Lupus Erythematosus Fibromyalgia
The overarching goal of this study is the development of a physiologic endpoint of pain and treatment effect in three distinct rheumatology populations. This would enable objective assessment of pain and treatment in these populations and enable a much more precise approach to treatment. Such an en1 expand

The overarching goal of this study is the development of a physiologic endpoint of pain and treatment effect in three distinct rheumatology populations. This would enable objective assessment of pain and treatment in these populations and enable a much more precise approach to treatment. Such an endpoint stands to significantly improve outcomes in these patients by eliminating the need for a trial-and-error approach to treatment. This is a single site observational study that aims to collect initial pilot data in three distinct patient groups. As this is observational, there is no randomization or blinding in the study. Patients will be followed for a period of one year after enrollment. Baseline measurements will be taken at the time of enrollment, and at each subsequent standard of care clinic visit as feasible, for a period of one year. As this is an observational study, there will be no change to the treatment for any patient due to research activities. The primary objective of this study is the characterization of the nociceptive index in three pediatric rheumatology populations. The secondary objective is the characterization of the nociceptive index in these populations in response to standard of care interventions. This is necessary to demonstrate the ability of this approach to serve as an endpoint of treatment effect.

Type: Observational

Start Date: Jul 2021

open study

Pragmatic Pediatric Trial of Balanced Versus Normal Saline Fluid in Sepsis
Children's Hospital of Philadelphia Shock Septic
The objectives of this multicenter pragmatic clinical trial are to compare the effectiveness and relative safety of balanced fluid resuscitation versus 0.9% "normal" saline in children with septic shock, including whether balanced fluid resuscitation can reduce progression of kidney injury. expand

The objectives of this multicenter pragmatic clinical trial are to compare the effectiveness and relative safety of balanced fluid resuscitation versus 0.9% "normal" saline in children with septic shock, including whether balanced fluid resuscitation can reduce progression of kidney injury.

Type: Interventional

Start Date: Aug 2020

open study

Ensartinib in Treating Patients With Relapsed or Refractory Advanced Solid Tumors, Non-Hodgkin Lymp1
National Cancer Institute (NCI) Advanced Malignant Solid Neoplasm Malignant Solid Neoplasm Recurrent Ependymoma Recurrent Ewing Sarcoma/Peripheral Primitive Neuroectodermal Tumor Recurrent Hepatoblastoma
This phase II Pediatric MATCH treatment trial studies how well ensartinib works in treating patients with solid tumors, non-Hodgkin lymphoma, or histiocytic disorders with ALK or ROS1 genomic alterations that have come back (recurrent) or does not respond to treatment (refractory) and may have spre1 expand

This phase II Pediatric MATCH treatment trial studies how well ensartinib works in treating patients with solid tumors, non-Hodgkin lymphoma, or histiocytic disorders with ALK or ROS1 genomic alterations that have come back (recurrent) or does not respond to treatment (refractory) and may have spread from where it first started to nearby tissue, lymph nodes, or distant parts of the body (advanced). Ensartinib may stop the growth of tumor cells by blocking some of the enzymes needed for cell growth.

Type: Interventional

Start Date: Apr 2018

open study

Registry of Asthma Characterization and Recruitment 3 (RACR3)
National Institute of Allergy and Infectious Diseases (NIAID) Asthma
This is a multi-center, non-interventional registry to create and maintain a database of participants to serve as a recruitment source for current and future DAIT NIAID-sponsored Childhood Asthma in Urban Settings (CAUSE) studies. expand

This is a multi-center, non-interventional registry to create and maintain a database of participants to serve as a recruitment source for current and future DAIT NIAID-sponsored Childhood Asthma in Urban Settings (CAUSE) studies.

Type: Observational [Patient Registry]

Start Date: Apr 2022

open study

Safety of Sildenafil in Premature Infants With Severe Bronchopulmonary Dysplasia
Christoph Hornik Bronchopulmonary Dysplasia of Newborn
This is a multicenter, randomized, placebo-controlled, sequential dose-escalating, double-masked, safety study of sildenafil in premature infants (inpatient in Neonatal Intensive Care Units (NICUs)) with severe bronchopulmonary dysplasia (BPD). expand

This is a multicenter, randomized, placebo-controlled, sequential dose-escalating, double-masked, safety study of sildenafil in premature infants (inpatient in Neonatal Intensive Care Units (NICUs)) with severe bronchopulmonary dysplasia (BPD).

Type: Interventional

Start Date: May 2021

open study

Optune for Children With High-Grade Glioma or Ependymoma, and Optune With Radiation Therapy for Chi1
Pediatric Brain Tumor Consortium Malignant Glioma Ependymoma Diffuse Intrinsic Pontine Glioma
This is a multicenter trial of the Optune device to examine the feasibility and to describe the device-related toxicity in children with supratentorial high grade glioma (HGG) or ependymoma (Stratum 1) and to examine the feasibility and efficacy of concurrent Optune and standard focal radiation the1 expand

This is a multicenter trial of the Optune device to examine the feasibility and to describe the device-related toxicity in children with supratentorial high grade glioma (HGG) or ependymoma (Stratum 1) and to examine the feasibility and efficacy of concurrent Optune and standard focal radiation therapy (RT) in children with newly diagnosed diffuse intrinsic pontine glioma (DIPG) (Stratum 2).

Type: Interventional

Start Date: Apr 2017

open study

Neuroimaging and Neuropsychological Outcomes in Urea Cycle Disorders
Children's National Research Institute Urea Cycle Disorders
In proximal urea cycle disorders (UCD), particularly ornithine transcarbamylase deficiency (OTCD), hyperammonemia (HA) causes increased brain glutamine (Gln) which perturbation is thought to be at the core of the neurological injury. In contrast, in distal UCD such as citrullinemia (argininosuccina1 expand

In proximal urea cycle disorders (UCD), particularly ornithine transcarbamylase deficiency (OTCD), hyperammonemia (HA) causes increased brain glutamine (Gln) which perturbation is thought to be at the core of the neurological injury. In contrast, in distal UCD such as citrullinemia (argininosuccinate synthetase deficiency; (ASSD) and argininosuccinic aciduria (argininosuccinate lyase deficiency); (ASLD) cognitive impairment and neuropsychiatric disease are common even in the absence of acute HA. As a consequence, both citrulline and argininosuccinate (ASA) or their metabolic products have been implicated as neurotoxic. In this project the investigators will use state-of- the-art neuroimaging and neuropsychological methods to investigate whether patients with OTCD have chronically elevated brain Gln and reduced myo-inositol (mI) levels that correlate with regional brain structural abnormalities and neurocognitive dysfunction. The researchers will further investigate whether during an acute episode of HA elevated brain Gln and decreased mI levels correlate with the magnitude of cytotoxic edema and whether a Gln/mI ratio threshold can be identified at which the cytotoxic edema is followed by cell loss. Finally, the researchers will investigate whether regions of brain damage in ASSD and/or ASLD are distinct from those in OTCD and compare brain Gln levels in ASSD and ASLD in the absence of HA to those in OTCD. The investigators will also seek to determine if brain citrulline and ASA can be identified in the brains of patients with distal UCD and whether they correlate with brain abnormalities seen in MRI and neuropsychological testing. This project will elucidate the chronology of brain pathology both in acute hyperammonemia and chronic UCD and whether, proximal and distal UCD differ in their pathophysiology of brain damage.

Type: Observational

Start Date: Aug 2016

open study