Maria Bitsch Poulsen, Anne-Marie Wegeberg, Johan Røikjer, Amar Nikontovic, Peter Vestergaard, Christina Brock
{"title":"Prevalence of self-reported symptoms of diabetic autonomic dysfunction in the North Denmark Region: a population-based survey.","authors":"Maria Bitsch Poulsen, Anne-Marie Wegeberg, Johan Røikjer, Amar Nikontovic, Peter Vestergaard, Christina Brock","doi":"10.1007/s00592-024-02390-2","DOIUrl":"https://doi.org/10.1007/s00592-024-02390-2","url":null,"abstract":"<p><strong>Aims: </strong>Diabetic autonomic neuropathy is a severe complication of diabetes, estimated to affect up to 44% in type 1 diabetes (T1D) and 73% in type 2 diabetes (T2D) based on clinical studies. Currently, the assessment of diabetic autonomic neuropathy is not implemented in Denmark's clinical guidelines, complicating the estimation of the true prevalence. Thus, this study investigated the prevalence of self-reported symptoms of autonomic dysfunction in people living with diabetes in the North Denmark Region using the Composite Autonomic Symptoms Score (COMPASS)-31 questionnaire.</p><p><strong>Methods: </strong>In 2022, all adults with T1D or T2D in the North Denmark Region (n = 29,155) were identified using The National Health Insurance Service Registry and invited to an online survey including the Danish version of COMPASS-31. The prevalence and associated 95% confidence intervals (CI) for symptomatic autonomic dysfunction were determined using a cut-off value of 16.</p><p><strong>Results: </strong>In total, 7,377 completed COMPASS-31, of which 82.4% reported having T2D and 13.7% T1D. The prevalence of symptomatic autonomic dysfunction was 36.8% (95% CI: 34-40) after a median of 26 years with diabetes for T1D and 44.2% (95% CI: 43-45) after a median of 10 years for T2D. Pupillary and orthostatic intolerance were the most frequent moderate to severe symptoms, respectively (38.4% and 24.0% in T1D and 32.8% and 26.3% in T2D).</p><p><strong>Conclusion: </strong>Symptoms of autonomic dysfunction are very common in individuals with diabetes living in the North Denmark Region, emphasizing the unmet need for regular testing to increase awareness and allow for adequate management, ultimately reducing the morbidity of diabetes.</p>","PeriodicalId":6921,"journal":{"name":"Acta Diabetologica","volume":" ","pages":""},"PeriodicalIF":3.1,"publicationDate":"2024-11-06","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142581761","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
A Hassanin, E Feeney, R Varman, E Kellegher, T Gahan, A O'Donoghue, J Dowdall, H Hurley, M C Barry, A Elmallah
{"title":"Predictors of Successful Antibiotic Treatment of Osteomyelitis in Diabetic Forefoot Infection.","authors":"A Hassanin, E Feeney, R Varman, E Kellegher, T Gahan, A O'Donoghue, J Dowdall, H Hurley, M C Barry, A Elmallah","doi":"10.1007/s00592-024-02386-y","DOIUrl":"https://doi.org/10.1007/s00592-024-02386-y","url":null,"abstract":"<p><strong>Background: </strong>Osteomyelitis (OM) associated with diabetic foot ulceration (DFU) is a growing public health challenge worldwide. Since 2012 the number of patients presenting with DFU per year to our centre has doubled.</p><p><strong>Objective: </strong>This study aims to evaluate outcomes from outpatient antibiotic therapy (OPAT) in the management of OM in DFU patients.</p><p><strong>Methods: </strong>A retrospective analysis was performed of medical notes, radiology, and vascular laboratory reports for all DFU patients with OM treated from April 2016 to April 2020. Variables analyzed included age, gender, site of OM, WIfI Score (Wound Ischaemia and foot Infection Score), probe-to-bone test (PTB), imaging (X-ray/magnetic resonance imaging (MRI), co-morbidities (peripheral arterial disease (PAD), chronic kidney disease (CKD), hypertension (HTN), smoking, ischemic heart disease (IHD), and dyslipidaemia. Outcomes evaluated were healing, recurrent DFU, and freedom from amputation at 12 months.</p><p><strong>Results: </strong>185 patients were admitted with 264 infected digits (Male 223; Female 41). The mean age was 66 years. Only 168 (63.6%) were fully healed at 12 months. Of the 96 patients who failed to heal, 43 underwent a repeat course of prolonged antibiotics without improvement. Factors associated with treatment failure were PAD, poorly controlled HbA1c and Deep or Extensive Ulcer or Gangrene.</p><p><strong>Conclusion: </strong>Extended outpatient antibiotic therapy (with an inpatient multidisciplinary approach) is an effective treatment for digital OM in DFU with a success rate of 63%. In recurrence, repeating prolonged antibiotics is unlikely to achieve healing. PAD, poorly controlled HbA1c and Deep or Extensive Ulcer or Gangrene are predictors of treatment failure.</p>","PeriodicalId":6921,"journal":{"name":"Acta Diabetologica","volume":" ","pages":""},"PeriodicalIF":3.1,"publicationDate":"2024-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142556868","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
{"title":"Revisiting the markers interleukin-6 and glucagon-like peptide-1 for targeting low-grade inflammation in type 2 diabetes: a meta-analysis and our lab experience.","authors":"Jyoti Kiran Bara, Puneet Gandhi, Pramod Verma","doi":"10.1007/s00592-024-02398-8","DOIUrl":"https://doi.org/10.1007/s00592-024-02398-8","url":null,"abstract":"<p><strong>Aim: </strong>Type 2 diabetes (T2DM) manifests as pancreatic disorder as a consequence of low-grade systemic inflammation, attributed to upregulated levels of interleukin-6 (IL-6). This in turn is associated with a reduced incretin effect with lower circulatory GLP-1 levels. Therefore, its important to monitor the circulating IL-6 and GLP-1 levels for better management and outcomes in T2DM patients.</p><p><strong>Methods: </strong>Limited studies being available in literature on circulating concentrations of GLP-1 and IL-6 in T2DM patients, a meta-analysis was conducted by identifying 1558 studies from 3 databases. As per inclusion and exclusion criteria, the studies were screened for the 2-markers.Forest plots were drawn for standardized mean differences and median values were deduced from the datasets. In parallel, analysis was conducted to ascertain the expression levels of the markers by ELISA (n = 52 T2DM patients) in real time.</p><p><strong>Results: </strong>The meta-analysis showed a significant (p < 0.01) standardized mean difference of 3.82 and 1.04 for IL-6 and GLP-1 respectively. The median values obtained from analysis for IL-6 were 26.50 pg/ml which were higher than the controls downregulated levels of GLP-1(8.77 pg/ml) were noted. The above findings are corroborated by the results of our experimental analysis with IL-6 concentrations at 11.603pg/ml and GLP-1 at 13.05pg/ml.</p><p><strong>Conclusion: </strong>The study highlights that systemic concentrations of IL-6 and GLP-1 correspond to a persistent low-grade inflammation and decreased incretin effect in T2DM patients which manifest as pancreatic β-cell dysfunction. The expression of the markers is inversely correlated and monitoring their levels is clinically important for targeting them through their potential antagonists thus reducing the risk of complications, thereby improving the quality of life of the patients.</p>","PeriodicalId":6921,"journal":{"name":"Acta Diabetologica","volume":" ","pages":""},"PeriodicalIF":3.1,"publicationDate":"2024-10-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142542820","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Geraldine Gallen, Alice Rosso, Núria Alonso-Carril, Sima Arbeli, Virginie Bahon, Vanessa Brown, Kerstin Endlich, Francesca Gulotta, Audrey Hansart, Amy Jolley, Rea Jussila, Anna Stefanowicz-Bielska, Paola Cardano
{"title":"Expert panel opinion on the optimal educational pathway for diabetes educators for training people with type 1 diabetes on the MiniMed™ 780G system: a Delphi consensus.","authors":"Geraldine Gallen, Alice Rosso, Núria Alonso-Carril, Sima Arbeli, Virginie Bahon, Vanessa Brown, Kerstin Endlich, Francesca Gulotta, Audrey Hansart, Amy Jolley, Rea Jussila, Anna Stefanowicz-Bielska, Paola Cardano","doi":"10.1007/s00592-024-02388-w","DOIUrl":"10.1007/s00592-024-02388-w","url":null,"abstract":"<p><strong>Introduction: </strong>The MiniMed™ 780G system is an advanced insulin pump system incorporating an AHCL (Advanced Hybrid Close Loop) algorithm that automatically adjusts insulin delivery based on glucose levels. All guidelines recommend the use of Automated Insulin Delivery therapy for people with type 1 diabetes (PWT1D) and they highlight that a specifically trained and expert team should provide training on HCL systems for PWT1D, but none of the publications detail the curriculum profile that diabetes educators should have. This paper aims to establish a consensus on the optimal educational pathway for diabetes educators on the MiniMed™ 780G system.</p><p><strong>Methods: </strong>An Expert Panel (EP) of 11 key opinion educators in diabetes technology in the EMEA area was assembled. Using the Delphi method, a consensus questionnaire based on the literature research was created, discussed and validated by the EP members. An agreement level of ≥ 75% was considered a strong consensus.</p><p><strong>Results: </strong>EP members had on average 16.3 years of clinical experience and followed at least 50 PWT1D using the MiniMed™ 780G system. All EP members agreed that a structured educational pathway to train diabetes educators in the use of the MiniMed™ 780G system is needed. 100% of the EP members agreed that the pathway should include a mentorship programme and in-field training; 90% agreed on using face-to-face training with the support of e-learning modules. The EP members believed that minimum competency standards for diabetes educators around the principles of diabetes care and education are needed.</p><p><strong>Conclusion: </strong>The educational pathway created by the EP showed that skills are needed at an advanced level and that mentorship in developing these skills is critical. This pathway is vital for supporting the implementation of diabetes technology into everyday life and can remove barriers and increase access to PWT1D.</p>","PeriodicalId":6921,"journal":{"name":"Acta Diabetologica","volume":" ","pages":""},"PeriodicalIF":3.1,"publicationDate":"2024-10-29","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142542818","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Anna Maria Barile, Cristiana Randazzo, Francesca Di Gaudio, Carola Buscemi, Giuseppina Brunacci, Silvio Buscemi
{"title":"Identification and characterization of a case of mild familial partial lipodystrophy in a carrier of a LMNA p.Arg582Leu variant","authors":"Anna Maria Barile, Cristiana Randazzo, Francesca Di Gaudio, Carola Buscemi, Giuseppina Brunacci, Silvio Buscemi","doi":"10.1007/s00592-024-02396-w","DOIUrl":"10.1007/s00592-024-02396-w","url":null,"abstract":"","PeriodicalId":6921,"journal":{"name":"Acta Diabetologica","volume":"62 2","pages":"285 - 288"},"PeriodicalIF":3.1,"publicationDate":"2024-10-29","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://link.springer.com/content/pdf/10.1007/s00592-024-02396-w.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142542819","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Caixia Gong, Chongyang Chen, Yangting Zhao, Yawen Wang, Kai Li, Xiaoyu Lv, Xinyuan Guo, Dengrong Ma, Xiaohui Zhai, Mei Han, Songbo Fu, Jingfang Liu
{"title":"Interaction and combined effect of triglyceride-glucose index and hypertension on type 2 diabetes individuals' peripheral arterial disease risk.","authors":"Caixia Gong, Chongyang Chen, Yangting Zhao, Yawen Wang, Kai Li, Xiaoyu Lv, Xinyuan Guo, Dengrong Ma, Xiaohui Zhai, Mei Han, Songbo Fu, Jingfang Liu","doi":"10.1007/s00592-024-02391-1","DOIUrl":"https://doi.org/10.1007/s00592-024-02391-1","url":null,"abstract":"<p><strong>Background: </strong>The interaction and combined effect of the triglyceride-glucose (TyG) index, an alternative parameter of insulin resistance, along with hypertension (HT), on the risk of peripheral arterial disease (PAD), a specific type of atherosclerotic cardiovascular disease, in individuals with type 2 diabetes (T2D) seems straightforward. However, specific research on this topic remains scarce.</p><p><strong>Methods: </strong>In this cross-sectional study, 2027 adult participants with T2D were devided into four groups based on the mean values of TyG index and various blood pressure parameters along with its category. Binary logistic regression, interaction analysis, combined effect size, and goodness-of-fit of the constructed models were performed.</p><p><strong>Results: </strong>The TyG index's individual effect and it's combined effect with HT, or higher systolic blood pressure (SBP) or higher mean arterial pressure in patients with T2D correlated with a higher PAD risk respectively (odds ratio [OR], 0.50, [95% confidence interval {CI} 0.28-0.89]; OR, 0.32, [95% CI 0.12-0.90]; OR, 0.35, [95% CI 0.13-0.94]; OR, 0.35, [95% CI 0.12-0.98], respectively). Only an interaction effect exists between the TyG index and SBP (multiplicative interaction{INT<sub>M</sub>}: 1.02 [1.002, 1.038]). Combining them can significantly improve the accuracy of predicting PAD (area under the receiver operating characteristic curve {AUC}<sub>M</sub><sub>AX</sub> = 0.7, AUC<sub>Model3 + TyG index + SBP</sub>-AUC<sub>Model3</sub> = 0.027). All P values were < 0.05.</p><p><strong>Conclusion: </strong>This study suggested that TyG index and hypertension, as well as their combined and interaction effect were significantly correlated with the risk of PAD in T2D individuals.</p>","PeriodicalId":6921,"journal":{"name":"Acta Diabetologica","volume":" ","pages":""},"PeriodicalIF":3.1,"publicationDate":"2024-10-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142492588","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
{"title":"Mediation analysis of brain magnetic resonance imaging variables with all-cause and cardiovascular disease-specific mortalities in persons with type 2 diabetes.","authors":"Cheng-Chieh Lin, Chia-Ing Li, Chiu-Shong Liu, Chih-Hsueh Lin, Jiaxin Yu, Shing-Yu Yang, Tsai-Chung Li","doi":"10.1007/s00592-024-02387-x","DOIUrl":"https://doi.org/10.1007/s00592-024-02387-x","url":null,"abstract":"<p><strong>Aim: </strong>Glucose variation (GV) has emerged as a predictor of morbidity and mortality in persons with diabetes. However, no study has examined whether brain magnetic resonance imaging (MRI) variables mediated the association between mortality and GV.</p><p><strong>Materials and methods: </strong>This study was a retrospective cohort comprising 3,961 individuals with type 2 diabetes (T2D), whose electronic medical records were retrieved from a medical center between January 2001 and October 2021. GV was quantified using coefficient of variation of fasting plasma glucose (FPG-CV) and glycated hemoglobin (HbA1c). The MRI variables included the presence or absence of cerebrovascular abnormality and white matter hyperintensity (WMH). All deaths and deaths resulting from expanded cardiovascular disease (CVD) were identified through annual record linkage with National Death Datasets. Cox proportional hazards models were applied to evaluate associations of MRI variable or GV with mortality. Mediation analyses were performed to assess the relative contributions of MRI variables for GV on mortality.</p><p><strong>Results: </strong>Among 3,961 patients, 2,114 patients (53.4%) had cerebrovascular abnormality and 1,888 patients (47.7%) had WMH. The results showed cerebrovascular abnormality and WMHs were significantly associated with all-cause and expanded CVD mortality after considering GV. The largest mediated effects of GV on all-cause and expanded CVD mortality were observed by cerebrovascular abnormality (5.26% and 8.49%, respectively).</p><p><strong>Conclusions: </strong>Our study suggests cerebrovascular abnormality and WMHs are important predictors of mortality in patients with T2D after considering GV. In addition, MRI variables of cerebrovascular abnormality expressed weak but significant mediation effect on the associations between GV and mortality.</p>","PeriodicalId":6921,"journal":{"name":"Acta Diabetologica","volume":" ","pages":""},"PeriodicalIF":3.1,"publicationDate":"2024-10-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142492589","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Marina Valenzano, Antonella Peduto, Anna Comba, Claudia Menzaghi, Vincenzo Trischitta
{"title":"The combination of next generation sequencing and technological devices allows a precision medicine approach in congenital hyperinsulinism: the case of a pregnant mother and the child she gave birth","authors":"Marina Valenzano, Antonella Peduto, Anna Comba, Claudia Menzaghi, Vincenzo Trischitta","doi":"10.1007/s00592-024-02395-x","DOIUrl":"10.1007/s00592-024-02395-x","url":null,"abstract":"","PeriodicalId":6921,"journal":{"name":"Acta Diabetologica","volume":"62 1","pages":"135 - 138"},"PeriodicalIF":3.1,"publicationDate":"2024-10-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142492628","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Shanshan Zhou, Zhen Zhang, Yiyuan Gao, Gengxiao Li, Yuefu Zhan, Shurong Liu, Zhiwei Zhao, Gerald M Pohost, Kai Sun, Kuncheng Li
{"title":"Assessment of left atrial function and left atrioventricular coupling via cardiac magnetic resonance in individuals with prediabetes and diabetes.","authors":"Shanshan Zhou, Zhen Zhang, Yiyuan Gao, Gengxiao Li, Yuefu Zhan, Shurong Liu, Zhiwei Zhao, Gerald M Pohost, Kai Sun, Kuncheng Li","doi":"10.1007/s00592-024-02380-4","DOIUrl":"https://doi.org/10.1007/s00592-024-02380-4","url":null,"abstract":"<p><strong>Aims: </strong>Assessment of left atrial (LA) function and the left atrioventricular coupling index (LACI) have recently been increasingly recognized as important indices for cardiovascular diseases associated with the presence of prediabetes and diabetes. We aimed to evaluate LA function and the LACI in patients with prediabetes and diabetes via cardiac magnetic resonance (CMR).</p><p><strong>Methods: </strong>In this retrospective study, we included 35 patients with prediabetes, 32 patients with diabetes, and 84 healthy control participants. The LACI and LA total, passive, and active emptying fractions (LATEmF, LAPEmF, and LAAEmF, respectively) were calculated. The LA reservoir, conduit, and booster pump strains (ε<sub>s</sub>, ε<sub>e</sub>, and ε<sub>a</sub>), and peak positive, peak early negative, and peak late negative strain rates (SRs, SRe, and SRa) were obtained via CMR-feature tracking (CMR-FT). For the statistical analyses, one-way analysis of variance, the Kruskal-Wallis test, and linear regression were conducted, and Pearson's and interclass correlation coefficients were calculated.</p><p><strong>Results: </strong>Compared with healthy control participants, patients with prediabetes or diabetes presented lower ε<sub>s</sub> and ε<sub>e</sub> values and a relatively preserved LACI. Patients with diabetes presented considerably reduced SRs, SRe, and LAPEmF. Elevated glycated haemoglobin (HbA1c) levels were independently associated with decreased magnitudes of ε<sub>s</sub>, SRs, ε<sub>e</sub>, and SRe. No significant associations were found between the LACI and the HbA1c or LA deformation parameters. We observed significant correlations between LATEmF and ε<sub>s</sub>, LAPEmF and ε<sub>e</sub> and between LAAEmF and ε<sub>a</sub>.</p><p><strong>Conclusions: </strong>CMR-FT provides a potential noninvasive approach for the early detection of alterations in the LA reservoir and conduit function in individuals with prediabetes and diabetes.</p>","PeriodicalId":6921,"journal":{"name":"Acta Diabetologica","volume":" ","pages":""},"PeriodicalIF":3.1,"publicationDate":"2024-10-21","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142455405","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Liying Jiang, Min Shen, Saisai Zhang, Jie Zhang, Yun Shi, Yong Gu, Tao Yang, Qi Fu, Bingwei Wang, Yang Chen, Kuanfeng Xu, Heng Chen
{"title":"A regulatory variant rs9379874 in T1D risk region 6p22.2 affects BTN3A1 expression regulating T cell function.","authors":"Liying Jiang, Min Shen, Saisai Zhang, Jie Zhang, Yun Shi, Yong Gu, Tao Yang, Qi Fu, Bingwei Wang, Yang Chen, Kuanfeng Xu, Heng Chen","doi":"10.1007/s00592-024-02389-9","DOIUrl":"https://doi.org/10.1007/s00592-024-02389-9","url":null,"abstract":"<p><strong>Objective: </strong>Genome-wide association studies (GWAS) have identified that 6p22.2 region is associated with type 1 diabetes (T1D) risk in the Chinese Han population. This study aims to reveal associations between this risk region and T1D subgroups and related clinical features, and further identify causal variant(s) and target gene(s) in this region.</p><p><strong>Methods: </strong>2608 T1D and 4814 healthy controls were recruited from East, Central, and South China. Baseline data and genotyping for rs4320356 were collected. The most likely causal variant and gene were identified by bioinformatics analysis, dual-luciferase reporter assays, expression quantitative trait loci (eQTL), and functional annotation of the non-coding region within the 6p22.2 region.</p><p><strong>Results: </strong>The leading variant rs4320356 in the 6p22.2 region was associated with T1D risk in the Chinese and Europeans. However, this variant was not significantly associated with islet function or autoimmunity. In silico analysis suggested rs9379874 was the most potential causal variant for T1D risk among thymus, spleen, and T cells, overlapping with the enhancer-related histone mark in multiple T cell subsets. Dual luciferase reporter assay and eQTL showed that the T allele of rs9379874 increased BTN3A1 expression by binding to FOXA1. Public single-cell RNA sequencing analysis indicated that BTN3A1 was related to T-cell activation, ATP metabolism, and cytokine metabolism pathways, which might contribute to T1D development.</p><p><strong>Conclusion: </strong>This study indicates that a functional variant rs9379874 regulates BTN3A1 expression, expanding the genomic landscape of T1D risk and offering a potential target for developing novel therapies.</p>","PeriodicalId":6921,"journal":{"name":"Acta Diabetologica","volume":" ","pages":""},"PeriodicalIF":3.1,"publicationDate":"2024-10-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142455404","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}