Diabetes 52:2636-2638, 2003
© 2003 by the American Diabetes Association, Inc.
A Novel Gene for Neonatal Diabetes Maps to Chromosome 10p12.1-p13
Gabrielle S. Sellick1,
Christine Garrett2, and
Richard S. Houlston1
1 Section of Cancer Genetics, Institute of Cancer Research, Sutton, U.K
2 North West Thames Regional Genetics Service, Kennedy-Galton Centre, North West London Hospitals NHS Trust, Harrow, U.K
We report a genomewide linkage analysis of a large consanguineous family segregating autosomal recessively inherited neonatal diabetes and the identification of a novel neonatal diabetes locus. Neonatal diabetes was characterized by low levels of circulating C-peptide with very low to undetectable levels of insulin in the presence of severe hyperglycemia unresponsive to insulin infusion. A dense genomewide linkage search of the family was undertaken using a first generation 10K single nucleotide polymorphism chip containing 10,044 markers. A region of homozygosity harboring the neonatal diabetes disease gene on chromosome 10p12.1-p13 was identified (multipoint logarithm of odds score 3.25). There is a strong history of type 2 diabetes in carriers of the disease gene. It is likely that chromosome 10p12.1-p13 may harbor a maturity-onset diabetes of the young or type 2 diabetes gene.
Address correspondence and reprint requests to Dr. Richard S Houlston, Section of Cancer Genetics, Institute of Cancer Research, Sutton, SM2 5NG U.K. E-mail: richard.houlston{at}icr.ac.uk

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Copyright © 2003 by the American Diabetes Association.
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