ISSN 1662-4009 (online)

ey0015.13-14 | Type 1 and Type 2 Diabetes in Resource-Limited Settings | ESPEYB15

13.14 Impact of common genetic determinants of Hemoglobin A1c on type 2 diabetes risk and diagnosis in ancestrally diverse populations: A transethnic genome-wide meta-analysis

E Wheeler , A Leong , CT Liu , MF Hievert , R Strawbridge , C Podmore

This GWAS meta-analysis combined data from five well known ethnically diverse cohorts (Framingham Heart Study, Atherosclerosis Risk in Communities Study, Multiethnic Study of Atherosclerosis, Taiwan-Metabochip Study for Cardiovascular Disease, and Singapore Prospective Study) to evaluate glycemic and erythrocytic genetic variants impacting HbA1c in individuals of European, African American, and East Asians ancestry. The study found new and known glycemic and...

ey0020.4-13 | Effects of Hormone Intervention on the Immune System | ESPEYB20

4.13. Investigating sex differences in T regulatory cells from cisgender and transgender healthy individuals and patients with autoimmune inflammatory disease: a cross-sectional study

GA Robinson , J Peng , H Peckham , G Butler , I Pineda-Torra , C Ciurtin , EC Jury

Brief summary: This study further explores the sex differences in autoimmune regulation and the control of normal inflammatory responses, and also helps us understand why there are sex differences in the aetiology of autoimmune diseases such as systemic lupus erythematosus (SLE). It demonstrates the changes that occur in cisgender pubertal development on the T regulatory cell (Treg), B cell and monocyte population, and using samples from transgender adolescents undergoing GnRH...

ey0020.5-5 | Clinical Guidance and Studies | ESPEYB20

5.5. AMH concentrations in infancy and mid-childhood predict ovarian activity in adolescence: a long-term longitudinal study of healthy girls

CP Hagen , MB Fischer , C Wohlfahrt-Veje , M Assens , AS Busch , AT Pedersen , A Juul , KM Main

Brief summary: This long-term longitudinal study of 437 Danish girls shows that AMH level measured in infancy is a useful tool to predict future ovarian activity.Anti-Müllerian hormone (AMH) is produced by granulosa cells in small ovarian follicles and thus reflects the ovarian reserve of resting primordial follicles (1). High AMH concentrations are observed in women with polycystic ovarian syndrome (PCOS) (2), while low age-specific AMH could be as...

ey0020.7-9 | Bone Health in Inflammatory Bowel Disease | ESPEYB20

7.9. Young adult male patients with childhood-onset IBD have increased risks of compromised cortical and trabecular bone microstructures

GV Sigurdsson , S Schmidt , D Mellstrom , C Ohlsson , R Saalman , M Lorentzon

Brief summary: This prospective longitudinal study of childhood-onset inflammatory bowel disease (IBD) analysed areal bone mineral density (aBMD) and alterations of bone microstructure in 49 young adult male patients with childhood-onset IBD, compared to 249 controls from the same region and matched for age, sex and height.Dual x-ray-absorptiometry (DXA) is routinely used in clinical practice to evaluate aBMD and the related risk of fracture, but it is u...

ey0020.8-17 | New Genetic Approaches | ESPEYB20

8.17. Genome-wide aggregated trans-effects on risk of type 1 diabetes: A test of the [ldquo]omnigenic[rdquo] sparse effector hypothesis of complex trait genetics

A Iakovliev , SJ McGurnaghan , C Hayward , M Colombo , D Lipschutz , A Spiliopoulou , HM Colhoun , PM McKeigue

Brief summary: Using data on 4964 type 1 diabetes (T1D) cases and 7497 controls, this study assessed whether the effect of common genetic variants (SNPs) on risk of T1D is mediated through trans-effects on the expression of core genes. Nine putative core genes were identified, all implicated in immune system regulation. In addition, four T1D-associated genomic regions were identified as master regulators that have trans-effects on gene expression.<p class="abstext...

ey0018.1-9 | Genetics | ESPEYB18

1.9. Requirement of FAT and DCHS protocadherins during hypothalamic-pituitary development

EJ Lodge , P Xekouki , TS Silva , C Kochi , CA Longui , FR Faucz , A Santambrogio , JL Mills , N Pankratz , J Lane , D Sosnowska , T Hodgson , AL Patist , P Francis-West , F Helmbacher , C Stratakis , CL Andoniadou

JCI Insight. 2020 Oct 27;5(23):e134310. doi: 10.1172/jci.insight.134310. PMID: 33108146.Lodge et al. screened 28 patients with pituitary stalk interruption syndrome (PSIS) for mutations in the FAT/DCHS (FAT atypical cadherin/ Dachsous cadherin-related) family of protocadherins. FAT2 and DCHS2 putative damaging variants were found in 6/28 patients with ectopic ...

ey0018.10-8 | (1) | ESPEYB18

10.8. Absence of islet autoantibodies and modestly raised glucose values at diabetes diagnosis should Lead to testing for MODY: lessons from a 5-year pediatric Swedish National Cohort study

A Carlsson , M Shepherd , S Ellard , M Weedon , A Lernmark , G Forsander , K Colclough , Q Brahimi , C Valtonen-Andre , SA Ivarsson , H Elding Larsson , U Samuelsson , E Ortqvist , L Groop , J Ludvigsson , C Marcus , AT Hattersley

Diabetes Care. 2020; 43:82–89. doi: 10.2337/dc19-0747.It is often difficult to identify maturity-onset diabetes of the young (MODY) in pediatric patients close to diabetes onset. Hence, misdiagnosis and unnecessary insulin treatment are still common.This study reports the discriminatory clinical features at diabetes onset in Swedish pediatric patients (age 1–18 y...

ey0018.11-5 | New hope: Increased diagnostic yield for disease causing MC4R variants and pharmacological treatment options | ESPEYB18

11.5. Obesity treatment effect in danish children and adolescents carrying melanocortin-4 receptor mutations

C Trier , M Hollensted , TM Schnurr , MAV Lund , TRH Nielsen , G Rui , EA Andersson , M Svendstrup , DS Bille , AP Gjesing , CE Fonvig , C Frithioff-Bojsoe , M Balslev-Harder , S Quan , M Gamborg , O Pedersen , L Angquist , JC Holm , T Hansen

Int J Obes (Lond). 2021;45(1):66–76. doi: https://doi.org/10.1038/s41366-020-00673-6This study investigated the influence of MC4R variants on treatment effectiveness in a large cohort undergoing an outpatient treatment program. Carriers of MC4R loss-of-function (LoF) variants showed a lack of improvement in BMI, in contrast to non LoF carriers.As we learn th...

ey0018.12-9 | Metabolic Syndrome | ESPEYB18

12.9. Sugar-Induced obesity and insulin resistance are uncoupled from shortened survival in drosophila

E Van Dam , LAG van Leeuwen , E Dos Santos , J James , L Best , C Lennicke , AJ Vincent , G Marinos , A Foley , M Buricova , JB Mokochinski , HB Kramer , W Lieb , M Laudes , A Franke , C Kaleta , HM Cocheme

Cell Metab. 2020; 31(4):710–725.e7. doi: 10.1016/j.cmet.2020.02.016. PMID: 32197072.In brief: High-sugar diets cause thirst, obesity and metabolic dysregulation, leading to insulin resistance, the MetS, T2DM and shortened lifespan. This study shows that high sugar diets induce dehydration in adult Drosophila. Water supplementation fully rescued the shortened lifespan, but ...