Arina Puzriakova Phenotypes for gene: SUCLA2 were changed from Mitochondrial DNA depletion syndrome 5 (encephalomyopathic with or without methylmalonic aciduria), 612073 to Mitochondrial DNA depletion syndrome 5 (encephalomyopathic with or without methylmalonic aciduria), OMIM:612073
Rebecca Foulger edited their review of gene: SUCLA2: Added comment: Review and rating collated by Tracy Lester (Oxford Medical Genetics Laboratories Oxford University Hospitals NHS Foundation Trust, 2019_02_06) on behalf of Wessex and West Midlands GLH for GMS Neurology specialist test group, for Clinical Indication R59 'Early onset or syndromic epilepsy'. Review contributors: John Taylor and Helen Lord. Suggested gene rating: Green. ; Changed rating: AMBER
Rebecca Foulger commented on gene: SUCLG1: PMID:26475597 (Carrozzo et al 2016) report 25 new patients with succinate-CoA ligase deficiency, and review the clinical and molecular findings in these and 46 previously reported patients. Of the 71 patients, 50 had SUCLA2 mutations and 21 had SUCLG1 mutations. Epilepsy was much more frequent in patients with SUCLA2 mutations compared to patients with SUCLG1 mutations: Only 1 patient with the SUCLG1 variant had epilepsy.
Rebecca Foulger Added comment: Comment on list classification: Updated rating from Amber to Green. Green review plus sufficient cases (>3) of seizures in MMA patients (At least 3 new patients in PMID:26475597, 2 cousins from 1 family in PMID:15877282, and 1 Faroe Island patient in PMID:17287286/17301081).
Rebecca Foulger commented on gene: SUCLA2: PMID:26475597 (Carrozzo et al 2016) report 25 new patients with succinate-CoA ligase deficiency, and review the clinical and molecular findings in these and 46 previously reported patients. Of the 71 patients, 50 had SUCLA2 mutations and 21 had SUCLG1 mutations. Epilepsy reported as generalized seizures, unspecified epilesy or infantile spasms was mainly reported in patients with SUCLA2 variants. Only 1 patient with the SUCLG1 variant had epilepsy (5%). At least 3 cases of epilepsy listed in new patients with SUCLA2 variants (supplementary material).
Rebecca Foulger commented on gene: SUCLA2: Jaberi et al 2013 (PMID:23759946) identified a homozygous c.751G>A transition in SUCLA2 (D251N) in 2 Iranian cousins with MIM:612073. No sign of epilepsy was seen in Patient 1. Epilepsy was not mentioned for the cousin (Patient 2).
Rebecca Foulger commented on gene: SUCLA2: Elpeleg et al 2005 (PMID:15877282) identified a homozgyous deletion/insertion in SUCLA2 in 2 first cousins from a consanguineous Muslim family. Both cousins had generalized seizures from age 1 and age 3.
Rebecca Foulger Phenotypes for gene: SUCLA2 were changed from to Mitochondrial DNA depletion syndrome 5 (encephalomyopathic with or without methylmalonic aciduria), 612073