Background: Glutaric aciduria type 1 (GA1) is a rare autosomal recessive neurometabolic disorder caused by mutations in the glutaryl-CoA dehydrogenase gene (GCDH). If left untreated, it leads to accumulation of neurotoxic metabolites leading to poor neurological outcomes characterized by encephalopathic crises, subdural effusions and extrapyramidal features. Case presentation: We hereby report a consanguineous Sudanese family in which the father and two children were affected whilst the mother was an asymptomatic carrier. All had a novel guanine insertion in position c.1173_1174 (c.1173dupG), resulting in a frameshift and a stop codon downstream (p.Asn392Glufs4X). Conclusion: To our knowledge, this GCDH variant has not been previously reported. Genetic testing should be made widely available in communities where consanguinity is prevalent. This will allow detection of new pathogenic gene variants.

Keywords: Glutaric aciduria type 1, GCDH gene, variant, Sudanese, consanguinity, case report