Glycemic Effects of the COVID-19 Booster Vaccine in Type 1 Diabetes

Status Completed

Clinical Trial Summary

Vaccines for COVID-19 are an essential part of combating the coronavirus pandemic. Vaccines "prime" the immune system against an invader (in this case the SARS-CoV-2 virus) by causing a temporary increased immune or inflammatory response. Inflammation can temporarily increase sugar levels and/or insulin requirements among patients with diabetes. The purpose of this study is to investigate whether the "booster" COVID-19 vaccine dose causes temporarily increased sugar levels and/or insulin dose requirements among patients with Type 1 Diabetes (T1D).

Clinical Trial Description

Over 30 million people in the US have diabetes. It's well known that acute inflammation can temporarily increase blood sugar levels (hyperglycemia) and insulin resistance among patients with diabetes, particularly those with type 1 diabetes (T1D). Vaccines cause an inflammatory reaction, because the vaccines prime the body's immune system against a potential virus. Reports have described temporary hyperglycemia and/or insulin resistance after COVID vaccine administration. However, to date this has not been studied in a rigorous fashion. The objective of the study is to determine if the COVID-19 booster causes increased sugar levels and insulin dose adjustments in patients with T1D. This is a study in adult patients with Type 1 Diabetes who have not yet received the COVID-19 booster vaccine. The study consists of two short outpatient (clinic) visits. Visit 1 occurs 3-5 days before receiving the COVID-19 booster vaccine (pre-vaccine visit). During this visit, the participant will fill out a questionnaire and have a blinded Dexcom G6 Pro CGM applied to the participant. An optional second "backup" Dexcom G6 Pro CGM will be provided, in case the first continuous glucose monitor (CGM) falls off accidentally. Visit 2 occurs 10 days after Visit 1 (about 5 days after receiving the first or second booster vaccine shot), at which time the CGM would be removed. Participants will continue participants' usual routine diabetes care while participating in the study, including using the participants' own glucometer or CGM. Participants will also be asked to keep track of participants' insulin doses administered during the 10-day study. ;

Study Design

Related Conditions & MeSH terms

Clinical Trial Details

NCT number	NCT05233592
Study type	Observational
Source	Johns Hopkins University
Contact
Status	Completed
Phase
Start date	March 8, 2022
Completion date	April 4, 2023

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