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The risk of progression to type 1 diabetes is highly variable in individuals with multiple autoantibodies following screening.

ABSTRACT: AIMS/HYPOTHESIS:Young children who develop multiple autoantibodies (mAbs) are at very high risk for type 1 diabetes. We assessed whether a population with mAbs detected by screening is also at very high risk, and how risk varies according to age, type of autoantibodies and metabolic status. METHODS:Type 1 Diabetes TrialNet Pathway to Prevention participants with mAbs (n?=?1815; age, 12.35?±?9.39 years; range, 1-49 years) were analysed. Type 1 diabetes risk was assessed according to age, autoantibody type/number (insulin autoantibodies [IAA], glutamic acid decarboxylase autoantibodies [GADA], insulinoma-associated antigen-2 autoantibodies [IA-2A] or zinc transporter 8 autoantibodies [ZnT8A]) and Index60 (composite measure of fasting C-peptide, 60 min glucose and 60 min C-peptide). Cox regression and cumulative incidence curves were utilised in this cohort study. RESULTS:Age was inversely related to type 1 diabetes risk in those with mAbs (HR 0.97 [95% CI 0.96, 0.99]). Among participants with 2 autoantibodies, those with GADA had less risk (HR 0.35 [95% CI 0.22, 0.57]) and those with IA-2A had higher risk (HR 2.82 [95% CI 1.76, 4.51]) of type 1 diabetes. Those with IAA and GADA had only a 17% 5 year risk of type 1 diabetes. The risk was significantly lower for those with Index60 <1.0 (HR 0.23 [95% CI 0.19, 0.30]) vs those with Index60 values ?1.0. Among the 12% (225/1815) ?12.0 years of age with GADA positivity, IA-2A negativity and Index60 <1.0, the 5 year risk of type 1 diabetes was 8%. CONCLUSIONS/INTERPRETATION:Type 1 diabetes risk varies substantially according to age, autoantibody type and metabolic status in individuals screened for mAbs. An appreciable proportion of older children and adults with mAbs appear to have a low risk of progressing to type 1 diabetes at 5 years. With this knowledge, clinical trials of type 1 diabetes prevention can better target those most likely to progress.

SUBMITTER: Jacobsen LM

PROVIDER: S-EPMC7229995 | biostudies-literature | 2020 Mar

REPOSITORIES: biostudies-literature

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The risk of progression to type 1 diabetes is highly variable in individuals with multiple autoantibodies following screening.

Jacobsen Laura M LM Bocchino Laura L Evans-Molina Carmella C DiMeglio Linda L Goland Robin R Wilson Darrell M DM Atkinson Mark A MA Aye Tandy T Russell William E WE Wentworth John M JM Boulware David D Geyer Susan S Sosenko Jay M JM

Diabetologia 20191125 3

<h4>Aims/hypothesis</h4>Young children who develop multiple autoantibodies (mAbs) are at very high risk for type 1 diabetes. We assessed whether a population with mAbs detected by screening is also at very high risk, and how risk varies according to age, type of autoantibodies and metabolic status.<h4>Methods</h4>Type 1 Diabetes TrialNet Pathway to Prevention participants with mAbs (n = 1815; age, 12.35 ± 9.39 years; range, 1-49 years) were analysed. Type 1 diabetes risk was assessed according t ...[more]

PMID: 31768570

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Project description:ObjectiveTo explore primary care provider (PCP) and patient perspectives on postpartum screening for type 2 diabetes (T2DM), including reasons for not completing oral glucose tolerance tests (OGTTs) specifically, preferred provider for organizing screening, and value of reminder letters for facilitating screening.DesignA follow-up survey, administered by fax or telephone, to PCPs and patients who participated in a randomized controlled trial assessing effectiveness of postpartum postal reminders to enhance screening for T2DM in women with gestational diabetes mellitus (GDM).SettingThe Ottawa Hospital, a university-affiliated tertiary centre in Ottawa, Ont.ParticipantsA total of 223 female patients with previously identified GDM and their respective PCPs were surveyed; 173 PCPs and 140 patients participated.Main outcome measuresWhether or not the patient was screened for T2DM post partum, the test used for screening, the factors contributing to the patient not being screened, perspectives on the importance of screening post partum, and opinions about which care provider should be responsible for screening in the postpartum period.ResultsResponse rates were 78% (173 of 223) for PCPs and 63% (140 of 223) for patients. Only 37% of the PCP responders had their patients complete OGTTs, while 85% of patient responders reported that they had completed OGTTs. The most common reason PCPs gave for not screening was no postpartum visit from the patient for any reason. Time pressures were the most common reason provided by patients for not being screened. More than 95% of patients and providers agreed that screening for T2DM was important. Patients and PCPs agreed that PCPs should be responsible for screening. Reminder letters were perceived as helpful by more than 85% of patients and PCPs.ConclusionThis follow-up survey demonstrates that PCPs and patients value the importance of screening for diabetes, identify the PCP as pivotal to screening, and appreciate a reminder strategy. There continue to be barriers that affect screening rates, despite the perceived importance of screening by PCPs and patients.

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The risk of progression to type 1 diabetes is highly variable in individuals with multiple autoantibodies following screening.

Publications

The risk of progression to type 1 diabetes is highly variable in individuals with multiple autoantibodies following screening.

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