Paediatric or syndromic cardiomyopathy
Gene: SDHAComment on mode of inheritance: Updated MOI from 'biallelic' only to 'both mono- and biallelic' as cardiomyopathy has also been shown to be a feature associated with heterozygous variants in this gene (PMID: 27683074)Created: 26 Aug 2022, 2:41 p.m. | Last Modified: 26 Aug 2022, 2:41 p.m.
Panel Version: 1.78
Cardiomyopathy, dilated, 1GG OMIM#613642; Leigh syndrome OMIM256000; Mitochondrial respiratory chain complex II deficiency OMIM#252011; Paragangliomas 5 OMIM#614165Created: 25 Mar 2019, 4:30 p.m.
Alston (J Med Genet 2012;49:569577. doi:10.1136/jmedgenet-2012-101146) reported a case of DCM and leukodystrophy in a patient compound heterozygous for variants in this gene. Levitas (2010 European Journal of Human Genetics (2010) 18, 11601165; doi:10.1038/ejhg.2010.83; published online 16 June 2010) This is a more early onset recessive (32 weeks gestation to 10 years of age), mitochondrial gene. Homozygosity for a specific variant G555E in dilated cardiomyopathy in specific populations including in 2010 the Bedouin population - 15 cases of paediatric cardiomyopathy - variant p.Gly555Glu has only one allele on GnomAD. This variant was also described in other populations assoc with DCM including Pagnamenta Mol Genet Metab. 2006 Nov;89(3):214-21. Epub 2006 Jun 23 and Van Coster Am J Med Genet A. 2003 Jul 1;120A(1):13-8.Created: 25 Mar 2019, 4:27 p.m.
Mode of inheritance
BIALLELIC, autosomal or pseudoautosomal
The rating of this gene has been updated following NHS Genomic Medicine Service approval.Created: 8 Mar 2022, 11:32 a.m. | Last Modified: 8 Mar 2022, 11:32 a.m.
Panel Version: 1.67
Submitted on behalf of the GMS Cardiology specialist group. The group has agreed that this gene should be Green on this panel.Created: 2 Dec 2019, 3:58 p.m. | Last Modified: 2 Dec 2019, 3:58 p.m.
Panel Version: 0.16
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. Gene Symbol submitted: SDHA; Suggested intial gene rating: Green; Information provided: Mode of inheritance and phenotype.Created: 1 Feb 2019, 4:31 p.m.
Mode of inheritance
BIALLELIC, autosomal or pseudoautosomal
Phenotypes
Mitochondrial respiratory chain complex II deficiency, 252011; Leigh syndrome, 256000
Comment on mode of inheritance: Confirmed on G2P and OMIM.Created: 10 Feb 2016, 9:37 a.m.
Comment on list classification: Confirmed DD gene for Leigh Syndrome, and reviewer suggests this should be promoted from amber.Created: 10 Feb 2016, 9:36 a.m.
Mode of inheritance for gene: SDHA was changed from BIALLELIC, autosomal or pseudoautosomal to BOTH monoallelic and biallelic, autosomal or pseudoautosomal
Source Expert Review Amber was added to SDHA. Rating Changed from Green List (high evidence) to Amber List (moderate evidence)
gene: SDHA was added gene: SDHA was added to Cardiomyopathies - including childhood onset. Sources: Expert Review Green,South West GLH Mode of inheritance for gene: SDHA was set to BIALLELIC, autosomal or pseudoautosomal Publications for gene: SDHA were set to 27604308 Phenotypes for gene: SDHA were set to Paragangliomas 5, 614165; Cardiomyopathy, dilated, 1GG, 613642; Mitochondrial Respiratory Chain Complex II Deficiency; Leigh syndrome, 256000; Complex II (Mitochondrial respiratory chain disorders (caused by nuclear variants only), OXPHOS structural subunits); Mitochondrial respiratory chain complex II deficiency, 252011; Isolated complex II deficiency; Cardiomyopathy, dilated, 1GG