CODA: COvid and Diabetes Assessment

Project Summary Several studies have found that infection with SARS-CoV-2 and COVID-19 diagnosis are associated with the development and progression of both Type 1 (T1D) and Type 2 Diabetes (T2D), possibly through infection of beta cells, increased insulin resistance, increased inflammation and fibrosis, and other biological processes.

The proposed study will take advantage of robust existing infrastructure to rapidly identify, recruit, and retain diverse cohorts of English and Spanish speaking pediatric and adult patients with recently diagnosed T1D or T2D. The study will include 1600 study participants diagnosed with diabetes in the last 3 months, who have

had a known COVID-19 infection in the past 90 days and those with recent diagnosis of diabetes and no known COVID-19 infection in the past year. The study will leverage PCORnet, a unique national network of over 60 health systems with electronic health record (EHR) data on over 80 million patients and a track record

for successful study recruitment. We will query EHR records to swiftly identify potential study subjects with recent diagnosis of diabetes and contact them via patient portals, telephone, face-to-face encounters, and other approaches. We will also leverage the T1D Exchange (T1DX), a national network of 54 diabetes centers

and an online patient registry of 17,000 individuals with T1D. Consented participants will partake in regular web/mobile or telephone surveys leveraging a previously developed REDCap/Twilio platform. Participants will also come to sites for regular serological testing, and a subsample will participate in more robust testing of

glucose tolerance, biomarkers, and vascular function. This data will be supplemented by longitudinal EHR data from participating sites and across PCORnet. Participants will be followed for 2-years. Aim 1 will examine if patients with recent T2D who have recent COVID-19 are more likely to have worse glycemic control, increased

inflammation and increased insulin resistance than patients without recent COVID-19. Aim 2 will examine if patients with recent T1D who have recent COVID-19 are more likely to have worse glycemic control, increased inflammation and more rapid reduction in beta cell function than patients without recent COVID-19. Aim 3 will

evaluate a subset of patients with diabetes to examine if COVID-19 is associated with worse vascular function, increased inflammation and hypercoagulability. Aim 4 will explore the role of genomic/social/environmental factors on inflammation and metabolic function. Aim 5 will leverage EHR data to explore the role of COVID-19

and COVID-19 treatments on diabetes development and diabetes-related outcomes across the pandemic. The study will be led by a team with significant experience related to COVID-19, post-acute sequelae of COVID-19 (PASC), obesity and diabetes in children and adults, epidemiological research, informatics, health services

research, genomics, metabolomics, physiology, patient and family engagement and other areas. The proposed work will provide a deeper understanding of the relationship between COVID-19 and diabetes, that can support future interventions and public health approaches to improve health.