ISSN 1662-4009 (online)

ey0019.10-7 | New paradigms | ESPEYB19

10.7. Circulating C-peptide levels in living children and young people and pancreatic beta cell loss in pancreas donors across type 1 diabetes disease duration

ALJ Carr , JRJ Inshaw , CS Flaxman , P Leete , RC Wyatt , LA Russell , M Palmer , D Prasolov , T Worthington , B Hull , LS Wicker , DB Dunger , RA Oram , NG Morgan , JA Todd , SJ Richardson , REJ Besser

Diabetes. 2022;71:1591-1596. https://pubmed.ncbi.nlm.nih.gov/35499624/Brief Summary: This cross-sectional study compared trends in plasma C-peptide decline in 4,076 young people with type 1 diabetes (T1D), with trends in beta-cell loss in 235 pancreas donors. As expected, C-peptide declined over time, and this was particularly marked in children with T1D younger than 7 years. Of interest, p...

ey0020.13-8 | Section | ESPEYB20

13.8. Non-coding variants disrupting a tissue-specific regulatory element in HK1 cause congenital hyperinsulinism

MN Wakeling , NDL Owens , JR Hopkinson , MB Johnson , JAL Houghton , A Dastamani , CS Flaxman , RC Wyatt , TI Hewat , JJ Hopkins , TW Laver , R van Heugten , MN Weedon , E De Franco , KA Patel , S Ellard , NG Morgan , E Cheesman , I Banerjee , AT Hattersley , MJ Dunne , International Congenital Hyperinsulinism Consortium , SJ Richardson , SE Flanagan

In Brief: The authors performed whole genome sequencing on 135 patients with congenital hyperinsulinaemia (CHI) who had negative genetic testing for previously known CHI genes. They identified nine different non-coding de novo variants (carried by 14 probands) located in a regulatory region of HK1 intron 2 that co-segregated with disease in families.Comment: HK1 is a ‘disallowed gene’ in the liver and pancreatic beta cells. Th...