This study is recruiting children ages 5 months to less than 2 years learn about safety and effects of two Moderna study vaccines. The study vaccines are being designed to prevent respiratory tract infections caused by two common viruses, Respiratory Syncytial Virus (RSV) and Human metapneumovirus (hMPV). The child will be randomized to receive one of the two study vaccines or placebo. The placebo will look like the study vaccine but will not have a vaccine in it. The study lasts 24 months and the child will receive 3 injections with other study activities, such as blood draws and nose (nasal) swabs.

This study will test whether adding in daily weighing (5-7 days per week) is helpful in weight loss. In adults, it has been found to be helpful to have individuals who are obese to be more successful with their weight loss efforts if they weigh themselves at home every day. We want to see if this could be helpful in children as well. This research will last for about 12 weeks (3 months).

This study will enroll children aged 6 to 12 years who have difficulty in maintaining a healthy weight and see if the medication Vyvanse may help them to reduce their weight.

This study will compare the effectiveness and durability of intensive behavioral counseling vs. medical management plus low-intensity behavioral counseling on BMI, body fat, cardiometabolic risk factors, and quality of life in adolescents with severe obesity. We hypothesize that Wegovy (semaglutide) plus low-intensity behavioral counseling will elicit superior reductions in BMI and body fat and greater improvement in cardiometabolic factors and quality of life compared to intensive behavioral counseling at 56 weeks.

In this study we want to find out more about weight loss and how diet and medications can affect weight loss. This study will last for up to 58 weeks. There are two phases to the study: - A weight loss phase with prescribed meals that lasts 6 weeks. - A study medication/placebo phase that lasts up 52 weeks. You will not know if you are receiving the medication or the placebo.

The purpose of this research is to better understand how children learn language. Child participants will complete problem solving and language-based tasks. Parents will complete two questionnaires about the child and their development. Results of this study will be used to help children with language-learning weaknesses.

The study drug FP-001 (Leuprolide mesylate) is being developed for children that are suffering from central (gonadotropin-dependent) precocious puberty (CPP). Leuprolide has been approved in the United States (US) and the European Union (EU) as treatment for prostate cancer already, and other forms of Leuprolide from other companies have been approved for the treatment of CPP. In this clinical study, Leuprolide will be used in the form of a 6-month depot injection.

The goal of this study is to learn more about how children (ages 5-8 years) describe their gender identities. We are also interested in learning more about the ways children think and develop. We will be giving children several tasks designed as games to assess flexibility in thinking, creativity, and the ability to take another person’s perspective.

This study will seek to learn about barriers to management of Type 2 diabetes for children ages 10-17. This study is recruiting children, and their parent/guardian, who are managing with oral medication or insulin.

This is a new type 1 diabetes onset study for ages 12-35 years old. We are looking at JAK inhibitor drugs to see if they can preserve beta cell function.

The goal of this study is to test the safety and effectiveness of tildacerfont in children with congenital adrenal hyperplasia (CAH). When a child is enrolled in the study, in addition to taking the study drug (tildacerfont), he or she will continue to take his or her standard glucocorticoid doses. A part of the study will be to test different doses of the study drug and to measure adrenal hormones at each visit. Children will be in the study for 18 weeks and will have to visit the study clinic 5 times.

The purpose of this research study is to collect timely and relevant data that will support the evolving research needs of the Inherited Retinal Disease community (IRD), in order to provide insights that can be used to improve patient management, and to inform development of future treatments. No visits, assessments, or procedures are mandated, and follow-up will be captured as part of your standard of care. The planned length of registry is of 8 years with a potential to extend the duration as needs evolve.

The purpose of this study is to determine the dose of medication (Valacyclovir) needed to prevent an infant from developing herpes simplex virus (HSV) if the infant was potentially exposed to HSV at the time of delivery as they passed through the birth canal.

Researchers want to find out more about how physical, cognitive, and emotional factors affect eating.

We want to learn more about children and teens strength, endurance, tiredness and level of physical activity. We want to find out how many times children and teens of different ages stand up and sit down in 30-seconds. It will take 10 minutes or less to take part in the study.

We are hoping to understand more about how being in the ICU impacts children who use breathing support at home and their families. As part of this research study, families will be asked to complete the following during the four study periods: - Complete questionnaires - Airway oscillometry will be used to test your child’s breathing - Complete short daily surveys

This study it to test an investigational vaccine called mRNA-1647 that is being developed for preventing cytomegalovirus (CMV) infection in people. CMV is a common virus that can spread easily through an infected person’s saliva or other body fluids such as blood, urine, and breast milk. We want see if the trial vaccine can prevent CMV infection in participants who have not been previously infected, to understand the safety (how many side effects you may have) of the trial vaccine, and to see if the trial vaccine results in participants making antibodies to CMV.

We are doing this study to see if we can improve the standard treatment for OCD, Exposure with Response Prevention, by pairing it with Transcranial Magnetic Stimulation to the parts of the brain that cause OCD symptoms.

This study will be measuring brain activity using EEG and assessing motor skills and speech in children following cancerous brain tumor resection. No direct cancer treatments or objectives are being targeted.

This study is being done to see how safe an investigational drug is and how well it will work to help people with obesity, or overweight with weight-related conditions like hypertension, dyslipidemia, obstructive sleep apnea, non-alcoholic fatty liver disease, or diabetes. If you qualify to be in the study, you will be given frequent lifestyle and behavioral counseling for the first 12 weeks of the study. The counseling will consist of advice on physical activities and dietary advice on healthy eating. During the treatment period, you will receive either tirzepatide or placebo. Placebo is a solution that looks like the study drug but has no medicine. The chance that you will get the study drug is 2 in 3. This phase will last about 72 weeks.

Currently, there are no approved treatment options for pediatric subjects with proteinuric kidney conditions. The study will look at the safety, efficacy, and pharmacokinetic (PK) trial in children ≥1 to <18 years treated for up to 108 weeks with the drug sparsentan.

This study identifies the bio-behavioral predictors and correlation of responses to Comprehensive Behavioral Intervention to Tics (CBIT) in young people with tic disorder.

The purpose of the study is to compare quality of life (QOL), adherence, insulin resistance, body composition and efficacy of LAGH to DGH in children with GHD.

The purpose of this study is to find out if treatment of congenital cytomegalovirus (cCMV) with an antiviral medicine has any impact on hearing, development of cancers, overall development and sexual maturity development. No treatment for cCMV will be provided in this study.

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.

The purpose of this research is to test the efficacy of different interventions to increase vaccination against human papillomavirus (HPV). Survivors of childhood, adolescent and young adult cancers are at increased risk of developing HPV-associated secondary cancers, but have lower HPV vaccination coverage compared to the general population. Interventions which are found to be successful in this study will be incorporated into future survivorship care to improve adherence to recommend preventive healthcare practices. All research procedures will be conducted remotely (e.g. online).

The purpose of this research is to find out whether the Autism Diagnostic Interview, 3rd edition (ADI-3) is useful for gathering information to help with the diagnosis of autism spectrum disorder (autism). Parents/caregivers will be asked to complete questionnaires and participate in two separate interviews about your child (the focus participant). We estimate that one interview will take 2-3 hours and the other will take 3-4 hours. Children will be asked to complete questionnaires (if they are able) and an in-person assessment that will take approximately 3-4 hours.

This study is about a genetic condition called Adrenoleukodystrophy (ALD). The first goal of this study is to understand more about how ALD affects a child’s brain and development in childhood as they take part in medical care and monitoring. This is important to identify the optimal ways to detect and treat manifestations of ALD such as cerebral ALD. The second goal is to learn about how ALD affects caregivers, so that clinicians can offer better support to families in the future. We will also have healthy comparisons to help to learn more about the condition (ALD) being studied, by comparing the information collected to a child without the condition.

This project is a data and specimen repository for developmental disorders. Participants provide biological samples and permission to store their health-related data. The purpose is collect and manage these materials for use in biomedical research related to developmental disorders.

This is a study of persons who do and do not stutter between ages 7 and 65 years. This study is trying to figure out how attention skills influence memory, language, and speech fluency skills.