hrp0086p1-p239 | Diabetes P1 | ESPE2016

Fetal Growth Restriction Due to Maternal Congenital Hyperinsulinism Associated with a Novel Variant in GLUD1 and Intrauterine Diazoxide Exposure

Dirlewanger Mirjam , Klee Philippe , Ranza Emmanuelle , Gastaldi Giacomo , Boulvain Michel , Schwitzgebel Valerie M

Background: Congenital hyperinsulinism (CHI) is a rare disease mostly due to loss-of-function mutations of the ABCC8 or KCNJ11 genes, encoding the two subunits of the KATP channel. Gain-of-function mutations in glutamate dehydrogenase 1, encoded by the GLUD1 gene, are the second most common cause of CHI.Objective and hypotheses: The majority of patients with a GLUD1 CHI respond to diazoxide, but little is kn...

hrp0084p1-96 | Growth | ESPE2015

Ligase IV Deficiency Syndrome as a Cause of Microcephalic Primordial Dwarfism in Dizygotic Twins

Girardin Celine , Ranza Emmanuelle , Klee Philippe , Dirlewanger Mirjam , Caflisch Marianne , Bottani Armand , Schwitzgebel Valerie

Background: Microcephalic primordial dwarfism (MPD) is a group of rare genetic disorders defined by severe growth restriction of both prenatal and postnatal weight (W), height (H), and particularly head circumference (HC).Objective and hypotheses: To elucidate the genetic origin of the MPD in dizygotic twins.Method: Exome sequencing of 19 genes known to be implicated in microcephaly was performed.Results: Diz...