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Possible mitochondrial disorder - nuclear genes

Gene: SERAC1

Green List (high evidence)

SERAC1 (serine active site containing 1)
EnsemblGeneIds (GRCh38): ENSG00000122335
EnsemblGeneIds (GRCh37): ENSG00000122335
OMIM: 614725, Gene2Phenotype
SERAC1 is in 16 panels

4 reviews

Ivone Leong (Genomics England Curator)

Green List (high evidence)

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

3-methylglutaconic aciduria with deafness, encephalopathy, and Leigh-like syndrome, 614739

Louise Daugherty (Genomics England Curator)

Comment on publications: added publication
Created: 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.

Ellen McDonagh (Genomics England Curator)

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.

Shamima Rahman (UCL Institute of Child Health)

Green List (high evidence)

History Filter Activity

4 Feb 2019, Gel status: 4

Created, Added New Source, Set mode of inheritance, Set Phenotypes

Ivone Leong (Genomics England Curator)

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