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| Mendeliome v1.1695 | RTN2 |
Achchuthan Shanmugasundram changed review comment from: PMID:38527963 reported the identification of seven novel or ultra-rare homozygous loss-of-function RTN2 variants in 14 individuals from seven unrelated families with distal hereditary motor neuropathy. All affected individuals exhibited weakness in the distal upper and lower limbs, lower limb spasticity, hyperreflexia, with an onset in the first decade of life. Nerve conduction studies revealed axonal motor neuropathy with neurogenic changes in the electromyography. Characterisation of C. elegans RTN2 homolog loss-of-function variants demonstrated morphological and behavioural differences compared to the parental strain and treatment with an endoplasmic/sarcoplasmic reticulum Ca(2+) re-uptake inhibitor (2,5-di-tert-butylhydroquinone) rescued key phenotypic differences. Biallelic variants in RTN2 gene have not yet been associated with any phenotypes in OMIM or Gene2Phenotype, while monoallelic variants have been associated with spastic paraplegia (MIM #604805) in OMIM.; to: PMID:38527963 reported the identification of seven novel or ultra-rare homozygous loss-of-function RTN2 variants in 14 individuals from seven unrelated families with distal hereditary motor neuropathy. All affected individuals exhibited weakness in the distal upper and lower limbs, lower limb spasticity, hyperreflexia, with an onset in the first decade of life. Nerve conduction studies revealed axonal motor neuropathy with neurogenic changes in the electromyography. Characterisation of C. elegans RTN2 homolog loss-of-function variants demonstrated morphological and behavioural differences compared to the parental strain, and treatment with an endoplasmic/sarcoplasmic reticulum Ca(2+) re-uptake inhibitor (2,5-di-tert-butylhydroquinone) rescued key phenotypic differences. Biallelic variants in RTN2 gene have not yet been associated with any phenotypes in OMIM or Gene2Phenotype, while monoallelic variants have been associated with spastic paraplegia (MIM #604805) in OMIM. |
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| Mendeliome v1.1695 | RTN2 |
Achchuthan Shanmugasundram changed review comment from: PMID:38527963 reported the identification of seven novel or ultra-rare homozygous loss-of-function RTN2 variants in 14 individuals from seven unrelated families with distal hereditary motor neuropathy. All affected individuals (seven males and seven females, aged 9-50 years) exhibited weakness in the distal upper and lower limbs, lower limb spasticity, hyperreflexia, with an onset in the first decade of life. Nerve conduction studies revealed axonal motor neuropathy with neurogenic changes in the electromyography. Characterisation of C. elegans RTN2 homolog loss-of-function variants demonstrated morphological and behavioural differences compared to the parental strain and treatment with an endoplasmic/sarcoplasmic reticulum Ca(2+) re-uptake inhibitor (2,5-di-tert-butylhydroquinone) rescued key phenotypic differences. Biallelic variants in RTN2 gene have not yet been associated with any phenotypes in OMIM or Gene2Phenotype, while monoallelic variants have been associated with spastic paraplegia (MIM #604805) in OMIM.; to: PMID:38527963 reported the identification of seven novel or ultra-rare homozygous loss-of-function RTN2 variants in 14 individuals from seven unrelated families with distal hereditary motor neuropathy. All affected individuals exhibited weakness in the distal upper and lower limbs, lower limb spasticity, hyperreflexia, with an onset in the first decade of life. Nerve conduction studies revealed axonal motor neuropathy with neurogenic changes in the electromyography. Characterisation of C. elegans RTN2 homolog loss-of-function variants demonstrated morphological and behavioural differences compared to the parental strain and treatment with an endoplasmic/sarcoplasmic reticulum Ca(2+) re-uptake inhibitor (2,5-di-tert-butylhydroquinone) rescued key phenotypic differences. Biallelic variants in RTN2 gene have not yet been associated with any phenotypes in OMIM or Gene2Phenotype, while monoallelic variants have been associated with spastic paraplegia (MIM #604805) in OMIM. |
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| Mendeliome v1.775 | ESAM |
Chern Lim gene: ESAM was added gene: ESAM was added to Mendeliome. Sources: Literature Mode of inheritance for gene: ESAM was set to BIALLELIC, autosomal or pseudoautosomal Publications for gene: ESAM were set to 36996813 Phenotypes for gene: ESAM were set to Neurodevelopmental disorder (MONDO#0700092), ESAM-related Review for gene: ESAM was set to GREEN gene: ESAM was marked as current diagnostic Added comment: PMID 36996813 - Thirteen affected individuals, including four fetuses, from eight unrelated families, with homozygous loss-of-function-type variants in ESAM – 2 of the variants are frameshifts, 1x nonsense, 1x canonical splice. - Affected individuals have profound global developmental delay/unspecified intellectual disability, epilepsy, absent or severely delayed speech, varying degrees of spasticity, ventriculomegaly, and ICH/cerebral calcifications, the latter being also observed in the fetuses. - One of the frameshift variant c.115del (p.Arg39Glyfs*33), was detected in six individuals from four unrelated families from the same geographic region in Turkey (southeastern Anatolia), suggesting a founder effect. - The c.451+1G>A variant was detected in three individuals from two independent families with the same ethnic origin (Arab Bedouin) Sources: Literature |
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| Mendeliome v1.477 | CLEC3B |
Chirag Patel gene: CLEC3B was added gene: CLEC3B was added to Mendeliome. Sources: Literature Mode of inheritance for gene: CLEC3B was set to MONOALLELIC, autosomal or pseudoautosomal, NOT imprinted Publications for gene: CLEC3B were set to PMID: 35331648 Phenotypes for gene: CLEC3B were set to Macular dystrophy, retinal, 4, OMIM #619977 Review for gene: CLEC3B was set to GREEN Added comment: 12 affected individuals from 5 multigenerational Japanese families in a small village in Miyazaki diagnosed with autosomal dominant maculoretinopathy. WES identified a pathogenic variant (p.Ala180Asp) in CLEC3B, which encodes tetranectin, a plasminogen kringle-4 binding protein. Variant cosegregated with the ocular phenotype. Mice that received subretinal injections with CLEC3B variant displayed multiple subretinal hyperreflective deposits, reduced retinal thickness, and decreased electroretinographic responses. The optokinetic tracking response indicated that spatial frequency was significantly lower (P < .05), implying impaired visual function in the mice. Sources: Literature |
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| Mendeliome v1.342 | ACVR1 |
Zornitza Stark changed review comment from: Fibrodysplasia ossificans progressiva is a rare autosomal dominant disease with complete penetrance involving progressive ossification of skeletal muscle, fascia, tendons, and ligaments. FOP has a prevalence of approximately 1 in 2 million worldwide, and shows no geographic, ethnic, racial, or gender preference. Individuals with FOP appear normal at birth except for great toe abnormalities: the great toes are short, deviated, and monophalangic. Ossification occurs progressively over the course of a lifetime in an inevitable and unpredictable episodic manner. Multiple unrelated families reported. The R206H variant is recurrent. Note variants in this gene are also associated with congenital heart disease, PMID 29089047.; to: Fibrodysplasia ossificans progressiva is a rare autosomal dominant disease with complete penetrance involving progressive ossification of skeletal muscle, fascia, tendons, and ligaments. FOP has a prevalence of approximately 1 in 2 million worldwide, and shows no geographic, ethnic, racial, or gender preference. Individuals with FOP appear normal at birth except for great toe abnormalities: the great toes are short, deviated, and monophalangic. Ossification occurs progressively over the course of a lifetime in an inevitable and unpredictable episodic manner. Multiple unrelated families reported. The R206H variant is recurrent. Clinical trial with palovarotene Note variants in this gene are also associated with congenital heart disease, PMID 29089047. |
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| Mendeliome v0.12731 | TTC21B | Dean Phelan edited their review of gene: TTC21B: Added comment: Correcting typographical error; Changed phenotypes: Glomerular disorder (MONDO:0019722), TTC21B-related | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
| Mendeliome v0.9929 | ACVR1 |
Zornitza Stark changed review comment from: Fibrodysplasia ossificans progressiva is a rare autosomal dominant disease with complete penetrance involving progressive ossification of skeletal muscle, fascia, tendons, and ligaments. FOP has a prevalence of approximately 1 in 2 million worldwide, and shows no geographic, ethnic, racial, or gender preference. Individuals with FOP appear normal at birth except for great toe abnormalities: the great toes are short, deviated, and monophalangic. Ossification occurs progressively over the course of a lifetime in an inevitable and unpredictable episodic manner. Multiple unrelated families reported. The R206H variant is recurrent.; to: Fibrodysplasia ossificans progressiva is a rare autosomal dominant disease with complete penetrance involving progressive ossification of skeletal muscle, fascia, tendons, and ligaments. FOP has a prevalence of approximately 1 in 2 million worldwide, and shows no geographic, ethnic, racial, or gender preference. Individuals with FOP appear normal at birth except for great toe abnormalities: the great toes are short, deviated, and monophalangic. Ossification occurs progressively over the course of a lifetime in an inevitable and unpredictable episodic manner. Multiple unrelated families reported. The R206H variant is recurrent. Note variants in this gene are also associated with congenital heart disease, PMID 29089047. |
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| Mendeliome v0.9915 | DAG1 | Zornitza Stark reviewed gene: DAG1: Rating: GREEN; Mode of pathogenicity: None; Publications: 21388311, 25934851, 24052401, 25503980; Phenotypes: Muscular dystrophy-dystroglycanopathy (congenital with brain and eye anomalies), type A, 9, Muscular dystrophy-dystroglycanopathy (limb-girdle), type C, 9, 613818, Walker-Warburg syndrome and tectocerebellar dysgraphia; Mode of inheritance: BIALLELIC, autosomal or pseudoautosomal | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
| Mendeliome v0.9628 | SIK3 |
Krithika Murali gene: SIK3 was added gene: SIK3 was added to Mendeliome. Sources: Expert list,Literature Mode of inheritance for gene: SIK3 was set to BIALLELIC, autosomal or pseudoautosomal Publications for gene: SIK3 were set to 30232230; 22318228 Phenotypes for gene: SIK3 were set to ?Spondyloepimetaphyseal dysplasia, Krakow type - #618162 Review for gene: SIK3 was set to AMBER Added comment: Biallelic SIK3 variants reported in 2 siblings from a consanguineous family with an uncharacterised skeletal dysplasia. Radiographic features included widened/flared metaphyses with irregular ossifications, motheaten long bones, fragmentation of the proximal metacarpals, rounded vertebral bodies, and a distinctive transverse gap seen in the tibias. In addition to the skeletal phenotype, the siblings manifested significant developmental delay with brain MRI abnormalities, a severe unclassified immunodeficiency, and normal parathyroid hormone concentration with mild hypercalcemia. One sibling had a more severe phenotype, particularly immunodeficiency, and died of Epstein-Barr virus induced small muscle cancer at 10 years of age. Mouse models support impaired chondrocyte development with skeletal dysplasia phenotye. Sources: Expert list, Literature |
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| Mendeliome v0.8591 | UBA2 |
Ain Roesley changed review comment from: 2x unrelated probands with isolated split hand malformation. fs variants - 1x de novo and 1x inherited from apparent unaffected mother (no radiographs of her hand available) 1x proband with unilateral split-hand malformation. Her daughter and grandson reported to have ectrofactyly but were unavailable for testing; to: 2x unrelated probands with isolated split hand malformation. fs variants - 1x de novo and 1x inherited from apparent unaffected mother (no radiographs of her hand available) 1x proband with unilateral split-hand malformation (missense). Her daughter and grandson reported to have ectrofactyly but were unavailable for testing |
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| Mendeliome v0.5139 | CTNNA3 |
Bryony Thompson gene: CTNNA3 was added gene: CTNNA3 was added to Mendeliome. Sources: ClinGen Mode of inheritance for gene: CTNNA3 was set to MONOALLELIC, autosomal or pseudoautosomal, NOT imprinted Publications for gene: CTNNA3 were set to 23136403; 21254927; 22421363; 30415094; 31539150 Phenotypes for gene: CTNNA3 were set to Arrhythmogenic right ventricular cardiomyopathy; Arrhythmogenic right ventricular dysplasia, familial, 13 MIM#615616 Review for gene: CTNNA3 was set to AMBER Added comment: Gene is classified as Limited by the ClinGen ARVC GCEP (Classification - 08/06/2019). PMID: 23136403 - an assumed de novo missense (V94D) was identified in an Italian proband with arrhythmogenic right ventricular dysplasia. An inframe deletion (Leu765del) was identified in a proband with arrhythmogenic right ventricular dysplasia, and was also present in the proband's asymptomatic father and paternal aunt, who had mild right ventricular dilation on echocardiography and increased trabeculations in the right ventricular apex on MRI, respectively, as well as in the aunt's asymptomatic son. There was supporting in vitro functional assay evidence for both variants. PMID: 21254927 - a missense variant was found in one of 55 Danish ARVD patients, but was found 37 times in 276,338 (1 homozygous) reference alleles in gnomAD making it less likely as a causal variant. PMID: 22421363 - null mice exhibit progressive dilated cardiomyopathy, gap junction remodelling, and increased sensitivity to ventricular arrhythmia following acute ischaemia, but not spontaneous ARVC. Additional publications identified - PMID: 30415094 - a VUS identified in a sudden unexpected death case with slight LV hypertrophy. PMID: 31539150 - 2 VUS and a nonsense variant identified in 3 probands with atrial fibrillation, with the nonsense variant segregating in an affected first-degree relative. Sources: ClinGen |
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| Mendeliome v0.2759 | TNRC6B | Zornitza Stark edited their review of gene: TNRC6B: Added comment: 17 unrelated individuals with heterozygous TNRC6B variants reported. Features included hypotonia (10/17), DD/ID (17/17 - ID was not universal: average IQ of 12 individuals was 73 (range : 50-113) with 4 having below 70), ADHD (11/17), ASD or autistic traits (8/17 and 5/17). Some/few presented with abnormal OFC (micro- / macrocephaly in 3/17 and 2/17), abnormal vision or hearing, variable other congenital anomalies, echocardiographic, GI or renal abnormalities, etc. Epilepsy was reported in 1/17. There was no recognisable gestalt.Detected variants included 14 pLoF, 1 missense SNV and 2 intragenic deletions. Variants had occurred as de novo events in 10/13 subjects for whom testing of both parents was possible. 3/13 subjects had inherited the variant from a parent with milder phenotype. Based on the type of variants identified, the pLI score of 1 in gnomAD and the HI index of 5.61%, the authors suggest haploinsufficiency as the most likely mechanism. Individuals with de novo TNRC6B variants have also been reported in larger cohorts (e.g. DDD study - PMID: 28135719, Iossifov et al - PMID: 25363768, Lelieveld et al - PMID: 27479843, Jónsson et al - PMID: 28959963). A previous study provided details on 2 sibs harboring a translocation which disrupted both TNRC6B and TCF20 (also associated with ID)(Babbs et al - PMID: 25228304).; Changed rating: GREEN; Changed publications: 32152250, 28135719, 25363768, 27479843, 28959963, 25228304; Changed phenotypes: Global developmental delay, Intellectual disability, Autistic behavior; Changed mode of inheritance: MONOALLELIC, autosomal or pseudoautosomal, NOT imprinted | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
| Mendeliome v0.2361 | USP45 |
Kristin Rigbye gene: USP45 was added gene: USP45 was added to Mendeliome. Sources: Literature Mode of inheritance for gene: USP45 was set to BIALLELIC, autosomal or pseudoautosomal Publications for gene: USP45 were set to 30573563 Phenotypes for gene: USP45 were set to Leber congenital amaurosis; retinal dystrophy Review for gene: USP45 was set to GREEN Added comment: 2 unrelated Chinese families reported with rare homozygous variants (one missense, one nonsense) and Leber congenital amaurosis. Animal knockout functional studies supported gene-disease association. PMID: 30573563 "By analysing WES data based on allele frequencies of in-house controls, population allele frequencies and in silico prediction tools, two rare homozygous mutations in USP45 were identified in two unrelated families. Immunohistochemistry of USP45 in the human and zebrafish retinal sections revealed enriched expression in the inner segments of photoreceptors. The knockdown of usp45 transcript in zebrafish led to abnormal retinal development with effects on photoreceptors, which could be successfully rescued by wild-type usp45 mRNA. Moreover, targeted knockout of Usp45 in mice caused abnormal electroretinography responses, similar to that seen in patients with LCA." Sources: Literature |
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| Mendeliome v0.2339 | DAG1 | Zornitza Stark Phenotypes for gene: DAG1 were changed from to Muscular dystrophy-dystroglycanopathy (congenital with brain and eye anomalies), type A, 9; Muscular dystrophy-dystroglycanopathy (limb-girdle), type C, 9, 613818; Walker-Warburg syndrome and tectocerebellar dysgraphia | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
| Mendeliome v0.2301 | DAG1 | Elena Savva reviewed gene: DAG1: Rating: GREEN; Mode of pathogenicity: None; Publications: PMID: 29337005, 25503980; Phenotypes: Muscular dystrophy-dystroglycanopathy (congenital with brain and eye anomalies), type A, 9, Muscular dystrophy-dystroglycanopathy (limb-girdle), type C, 9, 613818, Walker-Warburg syndrome and tectocerebellar dysgraphia; Mode of inheritance: BIALLELIC, autosomal or pseudoautosomal | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
| Mendeliome v0.2171 | ERAL1 |
Zornitza Stark gene: ERAL1 was added gene: ERAL1 was added to Mendeliome. Sources: Expert list Mode of inheritance for gene: ERAL1 was set to BIALLELIC, autosomal or pseudoautosomal Publications for gene: ERAL1 were set to 28449065 Phenotypes for gene: ERAL1 were set to Perrault syndrome 6, MIM# 617565 Review for gene: ERAL1 was set to AMBER Added comment: Three individuals from same small geographical location with homozygous missense variant in this gene, functional data. Sources: Expert list |
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| Mendeliome v0.529 | GRAP | Zornitza Stark Marked gene: GRAP as ready | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
| Mendeliome v0.529 | GRAP | Zornitza Stark Gene: grap has been classified as Red List (Low Evidence). | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
| Mendeliome v0.529 | GRAP |
Zornitza Stark gene: GRAP was added gene: GRAP was added to Mendeliome_VCGS. Sources: Expert list Mode of inheritance for gene: GRAP was set to BIALLELIC, autosomal or pseudoautosomal Publications for gene: GRAP were set to 30610177 Phenotypes for gene: GRAP were set to Deafness, autosomal recessive 114, MIM# 618456 Review for gene: GRAP was set to RED Added comment: Two apparently unrelated Turkish families reported, however same homozygous missense variant, and SNP analysis indicated identity by descent. Sources: Expert list |
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| Mendeliome v0.331 | VAMP2 |
Zornitza Stark gene: VAMP2 was added gene: VAMP2 was added to Mendeliome_VCGS. Sources: Literature Mode of inheritance for gene: VAMP2 was set to MONOALLELIC, autosomal or pseudoautosomal, NOT imprinted Publications for gene: VAMP2 were set to 30929742 Phenotypes for gene: VAMP2 were set to Intellectual disability; Autism Review for gene: VAMP2 was set to GREEN Added comment: 5 unrelated patients with heterozygous de novo mutations in VAMP2, presenting with a neurodevelopmental disorder characterized by axial hypotonia, intellectual disability, and autistic features. Affected individuals carrying de novo non-synonymous variants involving the C-terminal region presented a more severe phenotype with additional neurological features, including central visual impairment, hyperkinetic movement disorder, and epilepsy or electroencephalography abnormalities. Reconstituted fusion involving a lipid-mixing assay indicated impairment in vesicle fusion as one of the possible associated disease mechanisms. Sources: Literature |
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| Mendeliome v0.299 | PAK1 |
Zornitza Stark gene: PAK1 was added gene: PAK1 was added to Mendeliome_VCGS. Sources: Literature Mode of inheritance for gene: PAK1 was set to MONOALLELIC, autosomal or pseudoautosomal, NOT imprinted Publications for gene: PAK1 were set to 31504246; 30290153 Phenotypes for gene: PAK1 were set to Intellectual developmental disorder with macrocephaly, seizures, and speech delay; OMIM #618158 Review for gene: PAK1 was set to GREEN Added comment: 2 unrelated individuals with de novo PAK1 mutations, with developmental delay, secondary macrocephaly, seizures, and ataxic gait. Enhanced phosphorylation of the PAK1 targets JNK and AKT shown in fibroblasts of one subject and of c-JUN in those of both subjects compared with control subjects. In fibroblasts of the 2 affected individuals, they observed a trend toward enhanced PAK1 kinase activity. By using co-immunoprecipitation and size-exclusion chromatography, they observed a significantly reduced dimerization for both PAK1 mutants compared with wild-type PAK1. 4 unrelated individuals with intellectual disability, macrocephaly and seizures, with de novo heterozygous missense variants in PAK1. Sources: Literature |
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