The purpose of this study is to compare the genes of African American children and adults who have inflammatory bowel disease (IBD) with the genes of those who do not have IBD. Genes are pieces of hereditary material found in human cells. How an individual's genes cause intestinal inflammation in IBD is still being tested and not much is known about the association between genes and IBD in individuals with African ancestry. We hope to understand which genes cause IBD and if certain genes can help doctors personalize treatment for patients with IBD. For more information please contact IBDResearch@email.chop.edu.

The purpose of this investigation is to evaluate the impact of non-persistent and persistent chemical exposures on autoimmunity, gene expression and the microbiome in children with and without Crohns disease. If these chemical exposures are associated with differences in the epigenome and microbiome that are known to predispose for Crohns disease, the proposed research could further support changes in dietary behaviors to limit exposure, and efforts to regulate manufacturing processes that unintentionally and intentionally add these chemicals to food.

The purpose of this study is to characterize the microbiome in children with Crohns disease who have perianal fistula and to compare it to other children with Crohns disease who do not have perianal disease. Studying the role of the microbiome in perianal fistula may help us to develop new therapies.

This study was designed to measure components or metabolites of PEG 3350 in blood and urine from children who were already taking PEG 3350 and to compare these levels to measurements of the same molecules from a group of children who were not taking PEG 3350. PEG 3350 was not prescribed as part of this study. Participants completed questionnaires and provided access to their medical records.Enrollment for this study has been completed. Laboratory analysis of specimens and data analysis are being conducted. This work will be submitted for publication once all analyses have been completed. When available, study results will be accessible on https://classic.clinicaltrials.gov/ct2/show/NCT05424757.

The Childrens Hospital of Philadelphia is seekinghealthy adolescents between the ages of 12-13, who are currently in the 7^thgrade,to participate in the Sleep and Growth Study 2. The purpose of this research is to learn more about the changes in sleep and body size in adolescents as they transition from middle to high school. Participants will be asked to visit CHOP so that we can measure their bone density. Following this visit, participants will wear a sleep tracker over a 2-week period and speak to a team member by phone on three occasions about the types of food eaten in the previous 24 hours. If you and your child agree to participate, the study will involve 3 visits over approximately 2 years. All participants are compensated for their time and effort.For more information and study details, please call 215-590-2383, ext. 1, or emails_grow@chop.edu.