Primate-specific ZNF808 is essential for pancreatic development in humans.

"transcriptomic and epigenomic data for wt and znf808 ko are available from the ncbi gene expression omnibus under accession gse205164 . data and code to perform transcriptomic analysis and to generate figure panels are available from https://github com/owensnick/znf808genomics jl ."

"data and code to perform transcriptomic analysis and to generate figure panels are available from https://github com/owensnick/znf808genomics jl ."

"Competing interests The authors declare no competing interests."

"We are grateful to the patients and their families for taking part in our gene discovery study. We also thank S. Eurola, J. Ustinov and R. Ward for expert technical assistance. This work was supported by a Wellcome Trust Collaborative Award in Science to E.D.F., N.D.L.O., T.O., A.T.H. and M.I. (grant no. 224600/Z/21/Z). E.D.F. is a Diabetes UK RD Lawrence Fellow (19/005971) and has been the recipient of an EFSD Rising Star fellowship during this study. A.T.H. and S.E. were the recipients of a Wellcome Trust Senior Investigator award (grant no. WT098395/Z/12/Z) during this study and A.T.H. is employed as a core member of staff in the NIH Research-funded Exeter Clinical Research Facility and is an NIHR Emeritus Senior Investigator. M.I. has a Sir Henry Dale Fellowship jointly funded by the Wellcome Trust and the Royal Society (grant no. 206688/Z/17/Z). S.E.F. has a Wellcome Trust Senior Research Fellowship (grant no. 105636/Z/14/Z). N.D.L.O. has a lectureship funded by a Research England’s Expanding Excellence in England (E3) award. M.B.J. and M.N.W. are recipients of an Exeter Diabetes Centre of Excellence Independent Fellowship funded by E3. The work was supported by the National Institute for Health Research (NIHR) Exeter Biomedical Research Centre, Exeter, UK. R.E.J. is a Diabetes UK Harry Keen Clinician Scientist fellow (20/0006263) and received an Academy of Sciences Starter grant during this project. N.A.H. is funded by the Medical Research Council (grant nos. MR/000638/1 and MR/S036121/1). Most of the experimental studies were funded by the Academy of Finland Center of Excellence MetaStem (grant no. 312437), the Novo Nordisk Foundation (grant no. 0057286) and the Sigrid Juselius Foundation. H.M. is a member of the Doctoral Program in Integrative Life Science at University of Helsinki. A.T.’s doctoral studies were funded by the Foundation for Education and European Culture (IPEP) in Greece and by the Cambridge Trust. D.B. received funding from a European Molecular Biology Organization long-term fellowship (ALTF 295-2019). King Salman Center for Disability Research funded exome sequencing analysis for one case through Research Group no. RG-2022-010. For the purpose of open access, the author has applied a CC BY public copyright licence to any author accepted manuscript version arising from this submission."