000 02997 am a22004693u 4500
042 _adc
100 1 0 _aWakeling, Matthew N.
_eauthor
_92019
700 1 0 _aOwens, Nick D. L.
_eauthor
_92020
700 1 0 _aHopkinson, Jessica R.
_eauthor
_92021
700 1 0 _aJohnson, Matthew B.
_eauthor
_92022
700 1 0 _aHoughton, Jayne A.L.
_eauthor
_92023
700 1 0 _aDastamani, Antonia
_eauthor
_92024
700 1 0 _aFlaxman, Christine S.
_eauthor
_92025
700 1 0 _aWyatt, Rebecca C.
_eauthor
_92026
700 1 0 _aHewat, Thomas I.
_eauthor
_92027
700 1 0 _aHopkins, Jasmin J.
_eauthor
_92028
700 1 0 _aLaver, Thomas W.
_eauthor
_92029
700 1 0 _avan Heugten, Rachel
_eauthor
_92030
700 1 0 _aWeedon, Michael N.
_eauthor
_92031
700 1 0 _aDe Franco, Elisa
_eauthor
_92032
700 1 0 _aPatel, Kashyap A.
_eauthor
_92033
700 1 0 _aEllard, Sian
_eauthor
_92034
700 1 0 _aMorgan, Noel G.
_eauthor
_92035
700 1 0 _aCheesman, Edmund
_eauthor
_92036
700 1 0 _aBanerjee, Indraneel
_eauthor
_92037
700 1 0 _aHattersley, Andrew T.
_eauthor
_92038
700 1 0 _aDunne, Mark J.
_eauthor
_92039
700 1 0 _aRichardson, Sarah J.
_eauthor
_92040
700 1 0 _aFlanagan, Sarah E.
_eauthor
_92041
245 0 0 _aNon-coding variants disrupting a tissue-specific regulatory element in HK1 cause congenital hyperinsulinism
260 _c2022-11.
500 _a/pmc/articles/PMC7614032/
500 _a/pubmed/36333503
520 _aGene expression is tightly regulated with many genes exhibiting cell-specific silencing when their protein product would disrupt normal cellular function(1). This silencing is largely controlled by non-coding elements and their disruption might cause human disease(2). We performed gene-agnostic screening of the non-coding regions to discover new molecular causes of congenital hyperinsulinism. This identified 14 non-coding de novo variants affecting a 42bp conserved region encompassed by a regulatory element in intron 2 of Hexokinase 1 (HK1). HK1 is widely expressed across all tissues except for liver and pancreatic beta-cells and is thus termed a "disallowed gene" in these specific tissues. We demonstrated that the variants result in a loss of repression of HK1 in pancreatic beta-cells, thereby causing insulin secretion and congenital hyperinsulinism. Using epigenomic data accessed from public repositories, we demonstrated that these variants reside within a regulatory region that we determine to be critical for cell-specific silencing. Importantly, this has revealed a disease mechanism for non-coding variants that cause inappropriate expression of a disallowed gene.
540 _a
540 _ahttps://creativecommons.org/licenses/by/4.0/This work is licensed under a CC BY 4.0 (https://creativecommons.org/licenses/by/4.0/) International license.
546 _aen
690 _aArticle
655 7 _aText
_2local
786 0 _nNat Genet
856 4 1 _uhttp://dx.doi.org/10.1038/s41588-022-01204-x
_zConnect to this object online.
999 _c2136
_d2136