Ependymoma is a type of rare childhood cancer that occurs in the brain and spinal cord. Survival statistics are generally disappointing with a 5-year survival of 50-64%. The standard of care for ependymoma is maximal surgical resection followed by radiation therapy directed at the primary site of disease.

Radiation therapy is associated with immediate and long-term toxicities in children, especially young children. For this reason, it has been the practice of some doctors not to give radiation therapy to children with ependymoma when the tumor has been completely surgically removed. The investigators who designed this study have created strict measures to choose those who will not receive additional treatment after surgery and careful follow-up to minimize the risks to those who are assigned to observation only.

The overall goal of this study is to find out what effects, good and/or bad, a low
dose and a high dose of lenalidomide have on children, adolescents and young
adults with recurrent (has come back after being treated), refractory (has not gone
away with previous treatment), or progressive (is not responding to previous
treatments) Juvenile Pilocytic Astrocytomas (JPA) and Optic Pathway Gliomas
(OPG).

The purpose of this study is to create and maintain a registry, which is a database (a searchable collection of information) about children, adolescents and young adults with pediatric onset of rheumatic diseases. This data may help in the evaluation of the safety and benefit of medications that are prescribed to patients who have rheumatic diseases.

This study is for patients that have been diagnosed with High Risk B-Lymphoblastic Leukemia (HR B-ALL). The investigational drug in this study is Ruxolitinib. The purpose of this study is to find out if the study drug, ruxolitinib, in combination with standard HR B-ALL treatment is safe and effective in children, adolescents, and young adults with HR B-ALL. Participants can expect to be in this study for the treatment period of approximately 26 months (females) or 38 months (males) plus the post-treatment follow-up. Subjects are considered on study during the post-treatment follow-up period until the subject is deceased, lost to follow-up, or until the study is completed. Subjects in this study will be followed until all enrolled subjects have been followed for 3 years from Day 1 or are deceased or lost to follow-up.

Human subjects are being recruited for the proposed study to participate in usability testing for a virtual reality technology tool to be refined for assessment and prevention of risky sexual and substance use behaviors. Specifically, 15 adolescents, 15 young men, and 15 front line health care providers will participate in qualitative interviews and focus groups. Targeted enrollment is based on estimates from the existing clinical population treated by the local clinics from which participants will be recruited and the candidate's experience conducting clinical studies at these sites.

Phase 3 sample will include 20 adolescents, 20 young men, and 10 frontline health care workers. They will complete assessments/interviews, a brief emotion regulation skills training, and a simulation using a refined virtual reality tool.

This study is for patients who have been diagnosed with relapsed or refractory CD22+ B-Acute Lymphoblastic Leukemia (B-ALL). The overall goal of this study is to find out what effect, good and/or bad, the drug inotuzumab ozogamicin has on children and young adults with relapsed or refractory B-ALL. Participants can expect to be on this study for up 2 months and followed for up to 5 years.

This study is for patients that have been diagnosed with leukemia. This study is called a screening study and we are doing this study to find better ways to diagnose and treat leukemia in children, adolescents and young adults. Bone marrow, blood, and medical information about participant's cancer and treatment will be collected. Participants can expect to be on this study for 5 years.

The purpose of this study is to find out whether a web-based intervention using a mobile app is helpful for teens and young adults with sickle cell disease (SCD) in learning how to care for and manage their symptoms. 272 teens and adults with SCD will be enrolled in this study which is being conducted at the Medical University of South Carolina in Charleston SC., East Carolina University in Greenville NC., University of Miami in Miami FL., and the University of Alabama in Birmingham AL.

The goal of this project is to better understand the relationship between tobacco/nicotine and cannabis using behavioral economics during a tobacco/nicotine quit attempt. All participants will receive tobacco/nicotine cessation treatment (smoking and/or vaping treatment) for 12 weeks. To qualify, participants must be between the ages of 18-25 and use tobacco products (smoke cigarettes and/or vape nicotine) and use cannabis (in any form). Participants do not need to be interested in quitting cannabis/marijuana to qualify. This study is being conducted by the Medical University of South Carolina. All procedures are conducted remotely and there is no in-person visits are needed.

The purpose of this research is to assess a group-based telehealth parenting program for child ages 2-6 years old with a neurodevelopmental diagnosis and behavior problems. Families will complete an online intake assessment, 6 group-based telehealth PCIT sessions, and an online post intervention assessment. Families will be compensated for their time.