ArticleDiabetes & metabolism2022
Contribution of rare variants in monogenic diabetes-genes to early-onset type 2 diabetes.
Article in Diabetes & metabolism, 2022. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 5 papers.
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5 citing papers in PubMed, 5 citations in OpenAlex.
- Enabling reproducible type 1 diabetes polygenic risk scoring for clinical and translational applications.medRxiv : the preprint server for health sciences · 2025Article
- Polygenic scores contribution to Parkinson's disease comorbidities.Brain communications · 2025Article
- Evaluating the Efficacy of Type 2 Diabetes Polygenic Risk Scores in an Independent European Population.International journal of molecular sciences · 2024Article
- Insulin Secretion Defect in Children and Adolescents with Obesity: Clinical and Molecular Genetic Characterization.Journal of diabetes research · 2024Article
- The contribution of functional HNF1A variants and polygenic susceptibility to risk of type 2 diabetes in ancestrally diverse populations.Diabetologia · 2023Article
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Authors and funding
31 authors at 11 institutions in 2 countries.
Funding
Abstract
aimThis study investigated whether rare, deleterious variants in monogenic diabetes-genes are associated with early-onset type 2 diabetes (T2D).
methodsA nested case-control study was designed from 9712 Italian patients with T2D. Individuals with age at diabetes onset ≤35 yrs (n = 300; cases) or ≥65 yrs (n = 300; controls) were selected and screened for variants in 27 monogenic diabetes-genes by targeted resequencing. Rare (minor allele frequency-MAF <1%) and possibly deleterious variants were collectively tested for association with early-onset T2D. The association of a genetic risk score (GRS) based on 17 GWAS-SNPs for T2D was also tested.
resultsWhen all rare variants were considered together, each increased the risk of early-onset T2D by 65% (allelic OR =1.64, 95% CI: 1.08-2.48, p = 0.02). Effects were similar when the 600 study participants were stratified according to their place of recruitment (Central-Southern Italy, 182 cases vs. 142 controls, or Rome urban area, 118 vs. 158, p for heterogeneity=0.53). Progressively less frequent variants showed increasingly stronger effects in the risk of early-onset T2D for those with MAF <0.001% (OR=6.34, 95% CI: 1.87-22.43, p = 0.003). One unit of T2D-GRS significantly increased the risk of early-onset T2D (OR 1.09, 95% CI: 1.01-1.18; p = 0.02). This association was stronger among rare variants carriers as compared to non-carriers (p = 0.02).
conclusionRare variants in monogenic-diabetes genes are associated with an increased risk of early-onset T2D, and interact with common T2D susceptibility variants in shaping it. These findings might help develop prediction tools to identify individuals at high risk of developing T2D in early adulthood.
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