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Monozygous triplets discordant for transient neonatal diabetes mellitus and for imprinting of the TNDM differentially methylated region.

Kant SG, van der Weij AM, Oostdijk W, Wit JM, Robinson DO, Temple IK, Mackay DJ

Center for Human and Clinical Genetics, Leiden University Medical Center, Leiden, The Netherlands.

Transient neonatal diabetes mellitus (TNDM) is associated with paternal over-expression of an imprinted locus on chromosome 6q24, which contains one differentially methylated region (DMR); maternal demethylation at the DMR accounts for approximately 20% of cases. Here we report female monozygous triplets, two of whom have TNDM arising from loss of maternal methylation within the TNDM DMR.

Published 3 August 2005 in Hum Genet, 117(4): 398-401.
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