Cited by 105Diabetes and associated disordersGenetic Associations and EpidemiologyMultiple Sclerosis Research Studies

Identification of Novel T1D Risk Loci and Their Association With Age and Islet Function at Diagnosis in Autoantibody-Positive T1D Individuals: Based on a Two-Stage Genome-Wide Association Study

Zhu, Meng, Xu, Kuanfeng, Chen, Yang, Gu, Yong, Zhang, Mei, Luo, Feihong, Liu, Yu, Gu, Wei +45 more·2019·Diabetes Care

Abstract

OBJECTIVE: Type 1 diabetes (T1D) is a highly heritable disease with much lower incidence but more adult-onset cases in the Chinese population. Although genome-wide association studies (GWAS) have identified >60 T1D loci in Caucasians, less is known in Asians. RESEARCH DESIGN AND METHODS: We performed the first two-stage GWAS of T1D using 2,596 autoantibody-positive T1D case subjects and 5,082 control subjects in a Chinese Han population and evaluated the associations between the identified T1D risk loci and age and fasting C-peptide levels at T1D diagnosis. RESULTS: We observed a high genetic correlation between children/adolescents and adult T1D case subjects (rg = 0.87), as well as subgroups of autoantibody status (rg ≥ 0.90). We identified four T1D risk loci reaching genome-wide significance in the Chinese Han population, including two novel loci, rs4320356 near BTN3A1 (odds ratio [OR] 1.26, P = 2.70 × 10−8) and rs3802604 in GATA3 (OR 1.24, P = 2.06 × 10−8), and two previously reported loci, rs1770 in MHC (OR 4.28, P = 2.25 × 10−232) and rs705699 in SUOX (OR 1.46, P = 7.48 × 10−20). Further fine mapping in the MHC region revealed five independent variants, including another novel locus, HLA-C position 275 (omnibus P = 9.78 × 10−12), specific to the Chinese population. Based on the identified eight variants, we achieved an area under the curve value of 0.86 (95% CI 0.85–0.88). By building a genetic risk score (GRS) with these variants, we observed that the higher GRS were associated with an earlier age of T1D diagnosis (P = 9.08 × 10−11) and lower fasting C-peptide levels (P = 7.19 × 10−3) in individuals newly diagnosed with T1D. CONCLUSIONS: Our results extend current knowledge on genetic contributions to T1D risk. Further investigations in different populations are needed for genetic heterogeneity and subsequent precision medicine.

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Crossref · 10.2337/dc18-2023

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  • Glutamic acid decarboxylase antibody positivity is frequently observed in adult-onset type 1 diabetes mellitus.

    “Glutamic acid decarboxylase antibody positivity is frequently observed in adult-onset T1DM.”

    From The epidemiology of type 1 diabetes mellitus in older adults (2025) · cites this paper as [60]

  • Adult-onset type 1 diabetes mellitus most often presents with glutamic acid decarboxylase antibody positivity.

    “Adult-onset cases most often present with GADA positivity60.”

    From The epidemiology of type 1 diabetes mellitus in older adults (2025) · cites this paper as [60]

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Authors
Zhu, M., Xu, K., Chen, Y., Gu, Y., Zhang, M., Luo, F., Liu, Y., Gu, W., Hu, J., Xu, H., Xie, Z., Sun, C., Li, Y., Sun, M., Xu, X., Hsu, H.-T., Chen, H., Fu, Q., Shi, Y., Xu, J., Ji, L., Liu, J., Bian, L., Zhu, J., Chen, S., Xiao, L., Li, X., Jiang, H., Shen, M., Huang, Q., Fang, C., Li, X., Huang, G., Fan, J., Jiang, Z., Jiang, Y., Dai, J., Ma, H., Zheng, S., Cai, Y., Dai, H., Zheng, X., Zhou, H., Ni, S., Jin, G., She, J.-X., Yu, L., Polychronakos, C., Hu, Z., Zhou, Z., Weng, J., Shen, H., & Yang, T.
Affiliations
  • Jiangsu Province Hospital (CN)
  • Fudan University (CN)
  • Nanjing Medical University (CN)
  • Second Affiliated Hospital of Nanjing Medical University (CN)
  • Second Affiliated Hospital of Soochow University (CN)
  • Third Affiliated Hospital of Sun Yat-sen University (CN)
  • Central South University (CN)
  • Chinese Academy of Medical Sciences & Peking Union Medical College (CN)
  • Department of Endocrinology, The First Affiliated Hospital of Nanjing Medical University, Nanjing, China
  • State Key Laboratory of Reproductive Medicine (CN)
  • Augusta University (US)
  • University of Colorado Denver (US)
  • McGill University Health Centre (CA)
Venue
Diabetes Care
Published
2019-05-31
Volume
42
Issue
8
Pages
1414-1421
ISSN
  • 0149-5992 (ISSN-L)
  • 1935-5548
OpenAlex
W2947074868
Cited by
100
References
35
Citations by year
2026: 10 · 2025: 15 · 2024: 12 · 2023: 17 · 2022: 17 · 2021: 13 · 2020: 10 · 2019: 6
FWCI
7.38
Type
journal article
Language
en
Open access
closed
Locations
  • Diabetes Care (publishedVersion)
  • PubMed (publishedVersion)
Topics
  • Life Sciences › Biochemistry, Genetics and Molecular Biology › Genetics › Diabetes and associated disorders
  • Life Sciences › Biochemistry, Genetics and Molecular Biology › Genetics › Genetic Associations and Epidemiology
  • Health Sciences › Medicine › Pathology and Forensic Medicine › Multiple Sclerosis Research Studies
Keywords
type 1 diabetes, genetic susceptibility loci, age at diagnosis, fasting C-peptide, islet function, MHC region, BTN3A1, GATA3, polygenic risk score, Han Chinese, genetic correlation, fine mapping, novel loci
MeSH terms
Butyrophilins, Adolescent, Adult, Age Factors, Autoantibodies, C-Peptide, Child, China, Diabetes Mellitus, Type 1, Fasting, Female, Humans, Male, Risk Factors, Histocompatibility Antigens Class I, Antigens, CD, Odds Ratio, Asian People, Oxidoreductases Acting on Sulfur Group Donors, GATA3 Transcription Factor, Genome-Wide Association Study, Genetic Loci

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