Possible mitochondrial disorder - nuclear genes
Gene: SERAC1
Initial gene list and info collated by Carl Fratter (Oxford University Hospitals NHS Trust) January 2019 on behalf of the GMS Mitochondrial specialist test group.Created: 4 Feb 2019, 1:36 p.m.
Mode of inheritance
BIALLELIC, autosomal or pseudoautosomal
Phenotypes
3-methylglutaconic aciduria with deafness, encephalopathy, and Leigh-like syndrome, 614739
Comment on publications: added publicationCreated: 19 Dec 2017, 10:56 a.m.
Wortmann et al (2017) PMID: 29205472 reclassified MEGDEL syndrome to MEGDHEL syndrome, 3-MEthylGlutaconic aciduria, Dystonia-Deafness, Hepatopathy, Encephalopathy, Leigh-like syndrome (MEGDHEL) as they found that liver involvement was an additional clinical feature, so Hepatopathy was incorporated into the acronym. From a study of 67 individuals (39 previously unreported) from 59 families were included (age range 5 days - 33.4 years, median age 9 years) Wortmann et al idenitified 41 different SERAC1 biallelic variants, including 20 that have not been reported before. With exception of two families with a milder phenotype, all affected individuals show a strikingly homogeneous phenotype and time course. Severe, reversible neonatal liver dysfunction and hypoglycemia was seen in more than 40% of all cases. Starting at a median age of six months muscular hypotonia (91%) was seen, followed by progressive spasticity (82%, median onset 15 months) and dystonia (82%, 18 months). The majority of affected individuals never learnt to walk (68%). 79% suffered hearing loss, 58% never learnt to speak, nearly all had significant intellectual disability (88%).Created: 19 Dec 2017, 10:56 a.m.
Comment on mode of inheritance: Confirmed on OMIM.Created: 15 Mar 2016, 8:28 a.m.
Comment on list classification: Carl Fratter also confirmed that this gene should be green.Created: 15 Mar 2016, 8:27 a.m.
Phenotypes for gene: SERAC1 were changed from 3-methylglutaconic aciduria with deafness, encephalopathy, and Leigh-like syndrome, 614739 to 3-methylglutaconic aciduria with deafness, encephalopathy, and Leigh-like syndrome, OMIM:614739
gene: SERAC1 was added gene: SERAC1 was added to Possible mitochondrial disorder - nuclear genes. Sources: Expert Review Green,NHS GMS Mode of inheritance for gene: SERAC1 was set to BIALLELIC, autosomal or pseudoautosomal Phenotypes for gene: SERAC1 were set to 3-methylglutaconic aciduria with deafness, encephalopathy, and Leigh-like syndrome, 614739