0000000000395132

AUTHOR

Lambert P. Van Den Heuvel

showing 2 related works from this author

C2orf69 mutations disrupt mitochondrial function and cause a multisystem human disorder with recurring autoinflammation

2021

BACKGROUND. Deciphering the function of the many genes previously classified as uncharacterized open reading frame (ORF) would complete our understanding of a cell’s function and its pathophysiology. METHODS. Whole-exome sequencing, yeast 2-hybrid and transcriptome analyses, and molecular characterization were performed in this study to uncover the function of the C2orf69 gene. RESULTS. We identified loss-of-function mutations in the uncharacterized C2orf69 gene in 8 individuals with brain abnormalities involving hypomyelination and microcephaly, liver dysfunction, and recurrent autoinflammation. C2orf69 contains an N-terminal signal peptide that is required and sufficient for mitochondrial…

0301 basic medicineMicrocephalyRespiratory chainBiologyMitochondrionCell LineMitochondrial ProteinsTranscriptomeMiceOpen Reading Frames03 medical and health sciencesAll institutes and research themes of the Radboud University Medical Center0302 clinical medicineLoss of Function MutationGlycogen branching enzymemedicineAnimalsHumansGeneMice KnockoutGeneticsMetabolic Disorders Radboud Institute for Molecular Life Sciences [Radboudumc 6]Glycogen Debranching Enzyme SystemGeneral Medicinemedicine.diseaseMitochondriaOpen reading frameRenal disorders Radboud Institute for Molecular Life Sciences [Radboudumc 11]030104 developmental biology030220 oncology & carcinogenesisMicrocephalybiology.proteinClinical MedicineSignal transductionGlycogenJournal of Clinical Investigation
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Leigh syndrome due to compound heterozygosity of dihydrolipoamide dehydrogenase gene mutations. Description of the first E3 splice site mutation.

2003

Item does not contain fulltext A boy with recurrent episodes of hypoglycaemia and ataxia, microcephaly, mental retardation, permanent lactic acidaemia, intermittent 2-oxoglutaric aciduria as well as elevation of serum branched chain amino acids was diagnosed with dihydrolipoamide dehydrogenase (E3) deficiency. Analysis of genomic DNA revealed compound heterozygosity for two novel mutations: I393T in exon 11, located at the interface domain of the protein and possibly interfering with its dimerisation, and IVS9+1G>A located at a consensus splice site. A heterozygous polymorphism was also detected. In the patient's cDNA the I393T mutation and the polymorphism appeared to be homozygous, indica…

MaleHeterozygoteMutation MissensePyruvate Dehydrogenase ComplexGene mutationBiologyCompound heterozygosityLoss of heterozygositymedicineHumansLeigh diseaseMuscle SkeletalDihydrolipoamide DehydrogenaseGeneticsSplice site mutationDihydrolipoamide dehydrogenasePyruvate Dehydrogenase (Lipoamide)Fibroblastsmedicine.diseasePyruvate dehydrogenase complexRenal disorders [UMCN 5.4]Genetic defects of metabolism [UMCN 5.1]Child PreschoolPediatrics Perinatology and Child HealthRNA Splice SitesLeigh DiseaseCellular energy metabolism [UMCN 5.3]
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