The goals of this research study are to find out how having COVID-19 recently affects blood sugar, inflammation, and insulin in people with type 1 and type 2 diabetes. We also want to see if COVID-19 changes blood vessel health or makes blood clot more easily. We will also look at how things like genes, lifestyle, and environment might affect these issues.

We are trying to learn more about the ways in which adolescents (12-17 years) are involved in decision making related to their chronic condition. We are hoping to partner with families who are planning to attend or recently attended a visit in the Comprehensive Sickle Cell Center, Diabetes Center for Children, Center for Inflammatory Bowel Disease, or the Division of Rheumatology at CHOP.

If you and your child are able to help us, you will each be asked to complete a questionnaire about your experiences during a recent clinic visit. Additionally, a random selection of parents and teens will be asked to complete an interview with our team. All participants will be compensated for their participation in this study.

It is essential that we speak to families before or immediately following their scheduled visit at CHOP.

The purpose of this study is to evaluate the safety and pharmacokinetics (drug levels in the blood) of teplizumab in children less than 8 years old. The study will also assess if your child stays in Stage 2 T1D or progresses to Stage 3 T1D. Your child may join the study only if they are in Stage 2 T1D. Previous studies in adults and children older than 8 years of age suggest that taking teplizumab, a drug that affects your childs immune system, may stop, delay, or decrease the attack on the cells that make insulin. This slowing or blocking of the immune attack may reduce the risk of short-term and long-term consequences of T1D. To join this study, your child must have been diagnosed with Stage 2 T1D based on two positive T1D-related antibodies and confirmed dysglycemia (abnormal blood sugar levels) based on an oral glucose tolerance test, fasting plasma glucose test, or an increase in a blood test called the hemoglobin A1c. The study is open-label. That means that if your child qualifies for the study, your child will receive teplizumab. There is no placebo in this study.

Insulin therapy, commonly given as multiple daily injection therapy, is the only recommended treatment for Cystic Fibrosis Related Diabetes (CFRD). Traditional therapy for CFRD requires an intense daily effort related to diabetes care on top of the already burdensome management of Cystic Fibrosis. In this study, we will assess the safety and effectiveness of the iLet Bionic Pancreas, an automated insulin delivery system, which uses a continuous glucose monitor (CGM), an insulin pump, and a control formula that activates insulin delivery based on CGM glucose data.