
Search Clinical Trials
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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 |
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Health Information Technology to Reduce Disparities in Adolescent Health Outcomes: A Pragmatic Trial
Children's National Research Institute
Sexually Transmitted Diseases
We will compare differences in sexually transmitted infection (STI) detection rates
between sexual health survey (SHS)-derived electronic clinical decision support (CDS)
versus usual care (e.g. no provision of CDS) using an interrupted time series design. We
hypothesize that population-based STI de1 expand
We will compare differences in sexually transmitted infection (STI) detection rates between sexual health survey (SHS)-derived electronic clinical decision support (CDS) versus usual care (e.g. no provision of CDS) using an interrupted time series design. We hypothesize that population-based STI detection rates will be higher when SHS-derived electronic CDS is provided compared to usual care. Secondary analysis will include a comparison of STI detection rates by sexual risk strata (high risk vs. at risk) and race/ethnicity. Type: Interventional Start Date: Mar 2023 |
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Minimizing Toxicity in HLA-identical Sibling Donor Transplantation for Children With Sickle Cell Di1
Robert Nickel
Sickle Cell Disease
This multisite prospective study seeks to determine if HLA-identical sibling donor
transplantation using alemtuzumab, low dose total-body irradiation, and sirolimus (Sickle
transplant Using a Nonmyeloablative approach, "SUN") can decrease the toxicity of
transplant while achieving a high cure rate1 expand
This multisite prospective study seeks to determine if HLA-identical sibling donor transplantation using alemtuzumab, low dose total-body irradiation, and sirolimus (Sickle transplant Using a Nonmyeloablative approach, "SUN") can decrease the toxicity of transplant while achieving a high cure rate for children with sickle cell disease (SCD). Type: Interventional Start Date: Apr 2018 |
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A Basket Study of Vosoritide in Children With Turner Syndrome, Short Stature Homeobox-Containing Ge1
BioMarin Pharmaceutical
Short Stature Homeobox- Containing Gene SHOX Deficiency
Noonan Syndrome
Turner Syndrome
The purpose of this basket study in children with Turner syndrome, SHOX deficiency, and
Noonan syndrome is to evaluate the effect of 3 doses of vosoritide on growth as measured
by AGV after 6 months of treatment. The long-term efficacy and safety of vosoritide at
the therapeutic dose will be evalua1 expand
The purpose of this basket study in children with Turner syndrome, SHOX deficiency, and Noonan syndrome is to evaluate the effect of 3 doses of vosoritide on growth as measured by AGV after 6 months of treatment. The long-term efficacy and safety of vosoritide at the therapeutic dose will be evaluated up to FAH. Type: Interventional Start Date: Nov 2024 |
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Testing the Addition of the Anti-cancer Drug Venetoclax and/or the Anti-cancer Immunotherapy Blinat1
National Cancer Institute (NCI)
Acute Leukemia of Ambiguous Lineage
B Acute Lymphoblastic Leukemia
This phase II trial tests the addition of venetoclax and/or blinatumomab to usual
chemotherapy for treating infants with newly diagnosed acute lymphoblastic leukemia (ALL)
with a KMT2A gene rearrangement (KMT2A-rearranged [R]) or without a KMT2A gene
rearrangement (KMT2A-germline [G]). Venetoclax i1 expand
This phase II trial tests the addition of venetoclax and/or blinatumomab to usual chemotherapy for treating infants with newly diagnosed acute lymphoblastic leukemia (ALL) with a KMT2A gene rearrangement (KMT2A-rearranged [R]) or without a KMT2A gene rearrangement (KMT2A-germline [G]). Venetoclax is in a class of medications called B-cell lymphoma-2 (Bcl-2) inhibitors. It may stop the growth of cancer cells by blocking Bcl-2, a protein needed for cancer cell survival. Blinatumomab is a monoclonal antibody that may interfere with the ability of cancer cells to grow and spread. Chemotherapy drugs 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. Adding venetoclax and/or blinatumomab to standard chemotherapy may be more effective at treating patients with ALL than standard chemotherapy alone, but it may also cause more side effects. This clinical trial evaluates the safety and effectiveness of adding venetoclax and/or blinatumomab to chemotherapy for the treatment of infants with KMT2A-R or KMT2A-G ALL. Type: Interventional Start Date: Jun 2025 |
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Empowering Young Parents: Building Healthy Relationships Study
RTI International
Gender-based Violence
Intimate Partner Violence
The goal of this trial is to learn how the Safe Dates for Young Parents (SDYP)
intervention affects the sexual and reproductive health behaviors, and quality of, and
attitudes surrounding intimate partner relationships in adolescents and young adults
(AYA) assigned female sex at birth who are pregn1 expand
The goal of this trial is to learn how the Safe Dates for Young Parents (SDYP) intervention affects the sexual and reproductive health behaviors, and quality of, and attitudes surrounding intimate partner relationships in adolescents and young adults (AYA) assigned female sex at birth who are pregnant or parenting. The main questions it aims to answer are: - Will the SDYP intervention have any effect on the sexual and reproductive health behaviors during the study period? - Will the SDYP intervention have any effect on the prevention or reduction of intimate partner violence (IPV)? - Will the SDYP intervention have any effect on the attitudes and beliefs about healthy relationships? Researchers will compare the behaviors, attitudes, and beliefs about sexual and reproductive health and relationships of participants assigned to the SDYP intervention group to participants assigned to the control (non-SDYP intervention) group to see if there is any difference or changes in those behaviors, attitudes, and beliefs before-and-after or without the SDYP intervention. Participants in the SDYP intervention will attend ten (10) 50-minute group sessions that will involve interactive discussions, thinking through life-like scenarios, games, role-plays, brainstorming, and a poster contest and theatrical play. Type: Interventional Start Date: Oct 2024 |
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A Feasibility Study to Evaluate Safety and Probable Benefit of the Eclipse XL1 System for Distracti1
Eclipse Regenesis, Inc.
Short Bowel Syndrome
A Feasibility Study to Evaluate Safety and Probable Benefit of the Eclipse XL1 System for
Distraction Enterogenesis in Adult and Pediatric Patients with Short Bowel Syndrome expand
A Feasibility Study to Evaluate Safety and Probable Benefit of the Eclipse XL1 System for Distraction Enterogenesis in Adult and Pediatric Patients with Short Bowel Syndrome Type: Interventional Start Date: Sep 2025 |
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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 |
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Targeted Pediatric High-Grade Glioma Therapy
Nationwide Children's Hospital
High Grade Glioma
Diffuse Intrinsic Pontine Glioma
Anaplastic Astrocytoma
Glioblastoma
Glioblastoma Multiforme
The goal of this study is to perform genetic sequencing on brain tumors from children,
adolescents, and young adult patients who have been newly diagnosed with a high-grade
glioma. This molecular profiling will decide if patients are eligible to participate in a
subsequent treatment-based clinical1 expand
The goal of this study is to perform genetic sequencing on brain tumors from children, adolescents, and young adult patients who have been newly diagnosed with a high-grade glioma. This molecular profiling will decide if patients are eligible to participate in a subsequent treatment-based clinical trial based on the genetic alterations identified in their tumor. Type: Observational Start Date: Aug 2024 |
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Pediatric Dose Optimization for Seizures in Emergency Medical Services
Stanford University
Seizures
The Pediatric Dose Optimization for Seizures in Emergency Medical Services (PediDOSE)
study is designed to improve how paramedics treat seizures in children on ambulances.
Seizures are one of the most common reasons why people call an ambulance for a child, and
paramedics typically administer midaz1 expand
The Pediatric Dose Optimization for Seizures in Emergency Medical Services (PediDOSE) study is designed to improve how paramedics treat seizures in children on ambulances. Seizures are one of the most common reasons why people call an ambulance for a child, and paramedics typically administer midazolam to stop the seizure. One-third of children with active seizures on ambulances arrive at emergency departments still seizing. Prior research suggests that seizures on ambulances continue due to under-dosing and delayed delivery of medication. Under-dosing happens when calculation errors occur, and delayed medication delivery occurs due to the time required for dose calculation and placement of an intravenous line to give the medication. Seizures stop quickly when standardized medication doses are given as a muscular injection or a nasal spray. This research has primarily been done in adults, and evidence is needed to determine if this is effective and safe in children. PediDOSE optimizes how paramedics choose the midazolam dose by eliminating calculations and making the dose age-based. This study involves changing the seizure treatment protocols for ambulance services in 20 different cities, in a staggered and randomly-assigned manner. One aim of PediDOSE is to determine if using age to select one of four standardized doses of midazolam and giving it as a muscular injection or nasal spray is more effective than the current calculation-based method, as measured by the number of children arriving at emergency departments still seizing. The investigators believe that a standardized seizure protocol with age-based doses is more effective than current practice. Another aim of PediDOSE is to determine if a standardized seizure protocol with age-based doses is just as safe as current practice, since either ongoing seizures or receiving too much midazolam can interfere with breathing. The investigators believe that a standardized seizure protocol with age-based doses is just as safe as current practice, since the seizures may stop faster and these doses are safely used in children in other healthcare settings. If this study demonstrates that standardized, age-based midazolam dosing is equally safe and more effective in comparison to current practice, the potential impact of this study is a shift in the treatment of pediatric seizures that can be easily implemented in ambulance services across the United States and in other parts of the world. Type: Interventional Start Date: Aug 2022 |
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A Study to Compare Blinatumomab Alone to Blinatumomab With Nivolumab in Patients Diagnosed With Fir1
National Cancer Institute (NCI)
Down Syndrome
Recurrent B Acute Lymphoblastic Leukemia
This phase II trial studies the effect of nivolumab in combination with blinatumomab
compared to blinatumomab alone in treating patients with B-cell acute lymphoblastic
leukemia (B-ALL) that has come back (relapsed). Down syndrome patients with relapsed
B-ALL are included in this study. Blinatumoma1 expand
This phase II trial studies the effect of nivolumab in combination with blinatumomab compared to blinatumomab alone in treating patients with B-cell acute lymphoblastic leukemia (B-ALL) that has come back (relapsed). Down syndrome patients with relapsed B-ALL are included in this study. Blinatumomab is an antibody, which is a protein that identifies and targets specific molecules in the body. Blinatumomab searches for and attaches itself to the cancer cell. Once attached, an immune response occurs which may kill the cancer cell. Nivolumab is a medicine that may boost a patient's immune system. Giving nivolumab in combination with blinatumomab may cause the cancer to stop growing for a period of time, and for some patients, it may lessen the symptoms, such as pain, that are caused by the cancer. Type: Interventional Start Date: Dec 2020 |
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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 |
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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 2 years. Type: Interventional Start Date: Apr 2026 |
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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 |
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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 |
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Omalizumab Before Onset of Exacerbations
Children's National Research Institute
Asthma in Children
Atopy
Viral Upper Respiratory Infection
OBOE is a prospective, pilot, parallel group RCT with the overall aim of examining the
effect of a single dose of anti-IgE (omalizumab) vs. placebo administered at the onset of
URIs in the fall season among highly exacerbation-prone, urban, and atopic youth aged
6-17 years with persistent asthma. O1 expand
OBOE is a prospective, pilot, parallel group RCT with the overall aim of examining the effect of a single dose of anti-IgE (omalizumab) vs. placebo administered at the onset of URIs in the fall season among highly exacerbation-prone, urban, and atopic youth aged 6-17 years with persistent asthma. OBOE will recruit and randomize participants over 3 years (3 annual cohorts of participants). Recruitment for each of the yearly cohorts of OBOE will begin in February. Each cohort will be followed for a 2-6-month run-in period with the objective to gain control of each participant's asthma and to stabilize the required controller medication step level. Participants will receive routine asthma care every 1-2 months (a total of 2-4 times) during run-in using a previously described algorithm developed by the Inner-city Asthma Consortium and successfully employed in the PROSE study. The primary outcome is the change in the amount of nasal IFN-α recovered by nasal fluid absorption between two time points, within 72 hours of onset of a URI as defined by onset of (or substantial worsening of) rhinorrhea, nasal congestion or sneezing (single or multiple symptoms) and 3-6 days after study drug injection. Type: Interventional Start Date: May 2022 |
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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 |
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Protocol CAUSE-03 / CHEETAH
National Institute of Allergy and Infectious Diseases (NIAID)
Asthma
This is a one-year longitudinal, observational study of 250 urban children and
adolescents with asthma and 60 without asthma, ages 6-17 years old.
Participants with asthma will require daily controller therapy with inhaled
corticosteroids ICS (at least Step 2 therapy). Those without asthma cannot1 expand
This is a one-year longitudinal, observational study of 250 urban children and adolescents with asthma and 60 without asthma, ages 6-17 years old. Participants with asthma will require daily controller therapy with inhaled corticosteroids ICS (at least Step 2 therapy). Those without asthma cannot have used asthma medications in the year prior to enrollment and cannot demonstrate bronchodilator reversibility at baseline. Phenotypic characteristics will be established at baseline, and the participants will be seen at scheduled visits over 12 months. Each participant will be asked to monitor and self-report cold symptoms and will be asked to complete up to three cold visits Type: Observational Start Date: Apr 2024 |
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An Observational Study of Carbaglu® for the Treatment of MMA and PA in Adults and Pediatrics
RECORDATI GROUP
Hyperammonemia
Methylmalonic Acidemia
Propionic Acidemia
To obtain short-term and long-term clinical safety information, in pediatric and adult
patients with PA and MMA treated with Carbaglu®. expand
To obtain short-term and long-term clinical safety information, in pediatric and adult patients with PA and MMA treated with Carbaglu®. Type: Observational Start Date: Jun 2022 |
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A Study to Evaluate Tovorafenib in Pediatric and Young Adult Participants With Relapsed or Progress1
Day One Biopharmaceuticals, Inc.
Low-grade Glioma
Advanced Solid Tumor
This is a Phase 2, multi center, open-label study to evaluate the safety and efficacy of
Type II RAF (tovorafenib) in pediatric participants with low-grade glioma or advanced
solid tumors. Qualifying genomic alterations will be identified through molecular assays
as routinely performed at Clinical1 expand
This is a Phase 2, multi center, open-label study to evaluate the safety and efficacy of Type II RAF (tovorafenib) in pediatric participants with low-grade glioma or advanced solid tumors. Qualifying genomic alterations will be identified through molecular assays as routinely performed at Clinical Laboratory Improvement Amendments (CLIA) of 1988 or other similarly certified laboratories prior to enrollment into any of the arms. The study will consist of a screening period, a treatment period, a long-term extension phase, end of treatment (EOT) visit(s), a safety follow-up visit, and long-term follow-up assessments. Type: Interventional Start Date: Apr 2021 |
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Focused Ultrasound Pallidotomy for Dyskinetic Cerebral Palsy in Pediatric and Young Adult Subjects
Children's National Research Institute
Cerebral Palsy, Dyskinetic
Secondary Dystonia
The primary objective of the proposed study is to evaluate the safety of ExAblate
Transcranial MRgFUS as a tool for creating bilateral or unilateral lesions in the globus
pallidus (GPi) in patients with treatment-refractory secondary dystonia due to dyskinetic
cerebral palsy expand
The primary objective of the proposed study is to evaluate the safety of ExAblate Transcranial MRgFUS as a tool for creating bilateral or unilateral lesions in the globus pallidus (GPi) in patients with treatment-refractory secondary dystonia due to dyskinetic cerebral palsy Type: Interventional Start Date: Jan 2024 |
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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 |
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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 |
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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 |
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Longitudinal Study of Urea Cycle Disorders
Andrea Gropman
Brain Diseases, Metabolic, Inborn
Amino Acid Metabolism, Inborn Errors
Urea Cycle Disorders
Urea cycle disorders (UCD) are a group of rare inherited metabolism disorders. Infants
and children with UCD commonly experience episodes of vomiting, lethargy, and coma. The
purpose of this study is to perform a long-term analysis of a large group of individuals
with various UCDs. The study will f1 expand
Urea cycle disorders (UCD) are a group of rare inherited metabolism disorders. Infants and children with UCD commonly experience episodes of vomiting, lethargy, and coma. The purpose of this study is to perform a long-term analysis of a large group of individuals with various UCDs. The study will focus on the natural history, disease progression, treatment, and outcome of individuals with UCD. Type: Observational Start Date: Feb 2006 |