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Undiagnosed metabolic disorders v1.561 | TWNK | Arina Puzriakova Phenotypes for gene: TWNK were changed from Required for mtDNA maintenance (Mitochondrial respiratory chain disorders (caused by nuclear variants only)); Disorders of mitochondrial DNA maintenance and integrity; Progressive external ophthalmoplegia, autosomal dominant, 3, 609286; Mitochondrial DNA depletion syndrome 7 (hepatocerebral type), 271245; Mitochondrial DNA Depletion Syndrome; Progressive External Ophthalmoplegia with Mitochondrial DNA Deletions (monoallelic); Mitochondrial Membrane Protein-Associated Neurodegeneration (biallelic); Mitochondrial DNA Depletion Syndrome (biallelic) to Mitochondrial DNA depletion syndrome 7 (hepatocerebral type), OMIM:271245; Progressive external ophthalmoplegia with mitochondrial DNA deletions, autosomal dominant 3, OMIM:609286; Perrault syndrome 5, OMIM:616138 | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
Undiagnosed metabolic disorders v1.559 | SDHA | Arina Puzriakova Phenotypes for gene: SDHA were changed from Complex II (Mitochondrial respiratory chain disorders (caused by nuclear variants only), OXPHOS structural subunits); Isolated complex II deficiency; Leigh syndrome, 256000; Mitochondrial respiratory chain complex II deficiency, 252011; Cardiomyopathy, dilated, 1GG, 613642; Paragangliomas 5, 614165; Mitochondrial Respiratory Chain Complex II Deficiency to Mitochondrial complex II deficiency, nuclear type 1, OMIM:252011; Neurodegeneration with ataxia and late-onset optic atrophy, OMIM:619259; Cardiomyopathy, dilated, 1GG, OMIM:613642 | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
Undiagnosed metabolic disorders v1.525 | C19orf12 | Sarah Leigh Added comment: Comment on mode of inheritance: Monfrini et al (PMID: 29295770) and Gregory et al (PMID: 31087512) have reported heterozygous pathogenic C19ORF12 variants in patients with neurodegeneration with brain iron accumulation 4 (OMIM: 614298). Therefore, the mode of inheritance for this gene should be BOTH monoallelic and biallelic, autosomal or pseudoautosomal. | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
Undiagnosed metabolic disorders v1.524 | C19orf12 | Sarah Leigh Phenotypes for gene: C19orf12 were changed from Neurodegeneration with brain iron accumulation (NBIA) (Disorder of iron metabolism); Neurodegeneration with brain iron accumulation 4, 614298; Mitochondrial Membrane Protein-Associated Neurodegeneration to ?Spastic paraplegia 43, autosomal recessive, OMIM:615043; Neurodegeneration with brain iron accumulation 4, OMIM: 614298 | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
Undiagnosed metabolic disorders v1.501 | HIBADH |
Zornitza Stark gene: HIBADH was added gene: HIBADH was added to Undiagnosed metabolic disorders. Sources: Literature Mode of inheritance for gene: HIBADH was set to BIALLELIC, autosomal or pseudoautosomal Publications for gene: HIBADH were set to 34176136 Phenotypes for gene: HIBADH were set to organic aciduria Review for gene: HIBADH was set to RED Added comment: Single family reported with two siblings presenting with 3-Hydroxyisobutyric aciduria. Male sib with neurodevelopmental symptoms, female sibling asymptomatic. No functional studies Sources: Literature |
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Undiagnosed metabolic disorders v1.417 | ALG14 | Sarah Leigh Added comment: Comment on list classification: Associated with Myasthenic syndrome, congenital, 15, without tubular aggregates 616227 in OMIM, but not associated with phenotype in Gen2Phen. At least 6 variants reported in at least 5 cases with varying phenotypes. PMID 23404334 reports compound heterozygous (p.P65L, P.R104*) sibs, who manifested with myasthenic syndromes, but did not have intellectural disability nor seizures and were 62 and 51 years old when reported. PMID 28733338 reports two compound heterozygous (p.D74N, pV141G), (p.D74N, p.R109Q) cases and a homozygous (p.D74N), with early and lethal neurodegeneration with myasthenic and myopathic features, but the cases died before intellectual disability was manifiest. However, seizures were evident in two compound heterozygous families. PMID 30221345 reports a homozygous splicing variant in a case with intellectual disability and seizures. Functional studies were presented showing that this variant resulting in exon skipping, however, this was not completely prenetrant as wild type protein was detected at a low level in the patient. | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
Undiagnosed metabolic disorders v1.219 | PANK2 | Sarah Leigh Phenotypes for gene: PANK2 were changed from HARP syndrome 607236; Neurodegeneration with brain iron accumulation 234200Pantothenate kinases deficiency (Other disorders of vitamins and cofactors); Neurodegeneration with brain iron accumulation (NBIA) (Disorder of iron metabolism); Early onset dystonia; Parkinson Disease and Complex Parkinsonism; Posterior segment abnormalities to HARP syndrome 607236; Neurodegeneration with brain iron accumulation 234200 | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
Undiagnosed metabolic disorders v1.218 | PANK2 | Sarah Leigh Added comment: Comment on list classification: Associated with relevant phenotype in OMIM, but not associated with phenotype in Gen2Phen. At least 13 variants reported for Neurodegeneration with brain iron accumulation 234200 and 3 variants in 2 unrelated cases of HARP syndrome 607236. | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
Undiagnosed metabolic disorders v1.217 | PANK2 | Sarah Leigh Phenotypes for gene: PANK2 were changed from Pantothenate kinases deficiency (Other disorders of vitamins and cofactors); Neurodegeneration with brain iron accumulation (NBIA) (Disorder of iron metabolism); Early onset dystonia; Parkinson Disease and Complex Parkinsonism; Posterior segment abnormalities to HARP syndrome 607236; Neurodegeneration with brain iron accumulation 234200Pantothenate kinases deficiency (Other disorders of vitamins and cofactors); Neurodegeneration with brain iron accumulation (NBIA) (Disorder of iron metabolism); Early onset dystonia; Parkinson Disease and Complex Parkinsonism; Posterior segment abnormalities | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
Undiagnosed metabolic disorders v1.130 | TANGO2 |
Sarah Leigh gene: TANGO2 was added gene: TANGO2 was added to Undiagnosed metabolic disorders. Sources: Other Mode of inheritance for gene: TANGO2 was set to BIALLELIC, autosomal or pseudoautosomal Phenotypes for gene: TANGO2 were set to Metabolic encephalomyopathic crises, recurrent, with rhabdomyolysis, cardiac arrhythmias, and neurodegeneration 616878 Review for gene: TANGO2 was set to GREEN Added comment: Sources: Other |
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Undiagnosed metabolic disorders v1.88 | TWNK | Rebecca Foulger Phenotypes for gene: TWNK were changed from Required for mtDNA maintenance (Mitochondrial respiratory chain disorders (caused by nuclear variants only)) ; Disorders of mitochondrial DNA maintenance and integrity; Progressive external ophthalmoplegia, autosomal dominant, 3, 609286Mitochondrial DNA depletion syndrome 7 (hepatocerebral type), 271245; Mitochondrial DNA Depletion Syndrome; Progressive External Ophthalmoplegia with Mitochondrial DNA Deletions (monoallelic); Mitochondrial Membrane Protein-Associated Neurodegeneration (biallelic); Mitochondrial DNA Depletion Syndrome (biallelic) to Required for mtDNA maintenance (Mitochondrial respiratory chain disorders (caused by nuclear variants only)); Disorders of mitochondrial DNA maintenance and integrity; Progressive external ophthalmoplegia, autosomal dominant, 3, 609286; Mitochondrial DNA depletion syndrome 7 (hepatocerebral type), 271245; Mitochondrial DNA Depletion Syndrome; Progressive External Ophthalmoplegia with Mitochondrial DNA Deletions (monoallelic); Mitochondrial Membrane Protein-Associated Neurodegeneration (biallelic); Mitochondrial DNA Depletion Syndrome (biallelic) | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
Undiagnosed metabolic disorders | UROD | Helen Brittain reviewed UROD |