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| Deafness_IsolatedAndComplex v1.194 | BRAF | Chirag Patel Classified gene: BRAF as Green List (high evidence) | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
| Deafness_IsolatedAndComplex v1.194 | BRAF | Chirag Patel Gene: braf has been classified as Green List (High Evidence). | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
| Deafness_IsolatedAndComplex v1.191 | BRAF |
Chirag Patel gene: BRAF was added gene: BRAF was added to Deafness_IsolatedAndComplex. Sources: Literature Mode of inheritance for gene: BRAF was set to MONOALLELIC, autosomal or pseudoautosomal, NOT imprinted Publications for gene: BRAF were set to PMID: 20301557 Phenotypes for gene: BRAF were set to Noonan Syndrome with Multiple Lentigines, OMIM # 613707 Review for gene: BRAF was set to GREEN gene: BRAF was marked as current diagnostic Added comment: Established gene-disease association. Sensorineural hearing loss is present in ~20% of 'Noonan Syndrome with Multiple Lentigines' Sources: Literature |
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| Deafness_IsolatedAndComplex v1.119 | HIST1H4I |
Elena Savva gene: HIST1H4I was added gene: HIST1H4I was added to Deafness_IsolatedAndComplex. Sources: Literature Mode of inheritance for gene: HIST1H4I was set to MONOALLELIC, autosomal or pseudoautosomal, imprinted status unknown Publications for gene: HIST1H4I were set to PMID: 35202563 Phenotypes for gene: HIST1H4I were set to Neurodevelopmental disorders Review for gene: HIST1H4I was set to AMBER Added comment: PMID: 35202563 - 3 unrelated de novo patients, p.His75Arg was recurring and observed in 2/3 probands. - Zebrafish study shows both variants resulted in a significant increases in developmental issues such as in mild dev delay, necrosis and defective organogenesis. - All patients had intellectual disability and motor and/or gross developmental delay and dysmorphisms. - 2/3 patients showed bilateral conductive hearing loss Sources: Literature |
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| Deafness_IsolatedAndComplex v1.118 | EHD1 |
Zornitza Stark gene: EHD1 was added gene: EHD1 was added to Deafness_IsolatedAndComplex. Sources: Literature Mode of inheritance for gene: EHD1 was set to BIALLELIC, autosomal or pseudoautosomal Publications for gene: EHD1 were set to 35149593 Phenotypes for gene: EHD1 were set to Inherited renal tubular disease, MONDO:0015962, EHD1-related Review for gene: EHD1 was set to AMBER Added comment: Six individuals (5-33 years) with proteinuria and a high-frequency hearing deficit reported with the homozygous missense variant c.1192C>T (p.R398W) in EHD1. Proteinuria (0.7-2.1 g/d) consisted predominantly of low molecular weight proteins, reflecting impaired renal proximal tubular endocytosis of filtered proteins. Ehd1 knockout and Ehd1R398W/R398W knockin mice also showed a high-frequency hearing deficit and impaired receptor-mediated endocytosis in proximal tubules, and a zebrafish model showed impaired ability to reabsorb low molecular weight dextran. Single founder variant but two animal models, hence Amber Sources: Literature |
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| Deafness_IsolatedAndComplex v1.94 | USP48 |
Zornitza Stark gene: USP48 was added gene: USP48 was added to Deafness_IsolatedAndComplex. Sources: Literature Mode of inheritance for gene: USP48 was set to MONOALLELIC, autosomal or pseudoautosomal, NOT imprinted Publications for gene: USP48 were set to 34059922 Phenotypes for gene: USP48 were set to Nonsyndromic genetic deafness, MONDO:0019497 Review for gene: USP48 was set to GREEN Added comment: PMID: 34059922 - Bassani et al 2021 - 3 cases reported with variants in USP48 and non syndromic hearing loss. They first analysed 4-generation Italian family with 6 individuals with hearing loss. The only rare variant segregating with the disease was a missense variant in USP48 (NM_032234.7:c.1216G > A, NP_115612.4:p.(Gly406Arg)). The variant is present in GnomAD v2.1.1 with a minor allele frequency (MAF) of 6.7 × 10−5 (17 allele out of 251 304 with no homozygotes). They also observed one hearing individual in the family who was heterozygous for the variant, suggesting incomplete penetrance. In a Dutch family the found by exome sequencing a missense variant in USP48 (NM_032236.7:c.2215_2216delinsTT, NP_115612.4:p.(Thr739Leu)). The probands mother and uncle were also affected by no sequence data was available for analysis. In a French family a proband is reported with right profound sensorineural hearing impairment (at 12 months), but normal left hearing (at 6 years old). The patient is heterozygote for a de novo splice variant in USP48 (NM_032236.7:c.3058 + 2 T > C, NP_115612.4:p.?;) which is not found in GnomAD and is predicted to result in a frameshift resulting in either NMD or a truncated protein. In functional experiments they showed that the two missense variants found in the Italian and Dutch families, and a shortened protein as predicted for the variant found in the French variant, showed an impaired ability to cleave tetra-ubiquitin into tri-, di- and mono-ubiquitin. Using immunohistology, they show that the human USP48 protein is present in fetal inner ear specimens. In addition zebrafish lacking usp48 showed a significant decrease of auditory response in acoustic startle response assays at 600 and 800 Hz wavelengths. Overall, borderline Green: one of the variants is present at a high frequency in the normal population. However, even if just two families are considered, supportive functional data including zebrafish model. Sources: Literature |
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| Deafness_IsolatedAndComplex v1.48 | CLRN2 |
Zornitza Stark gene: CLRN2 was added gene: CLRN2 was added to Deafness_IsolatedAndComplex. Sources: Literature Mode of inheritance for gene: CLRN2 was set to BIALLELIC, autosomal or pseudoautosomal Publications for gene: CLRN2 were set to 33496845 Phenotypes for gene: CLRN2 were set to Non-syndromic hearing loss Review for gene: CLRN2 was set to AMBER Added comment: Missense variant segregates with non-syndromic hearing loss in 3 members of a consanguineous family, two from one nuclear family and one from another. The variant was also shown to result in some transcripts being abnormally spliced, resulting in a premature stop codon. Functional studies in zebrafish and mice show the gene plays an essential role in normal organization and maintenance of the auditory hair bundles, and for hearing function. Rated Amber due to supporting functional studies in mice. Sources: Literature |
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| Deafness_IsolatedAndComplex v0.587 | THOC1 |
Melanie Marty changed review comment from: Missense variant identified and segregated with adult-onset hearing loss in 9 affected family members. 12 unaffected individuals also tested. Functional studies showed THOC1 was expressed in mouse and zebrafish hair cells. Furthermore, thoc1 deficiency caused the reduction of hair cell numbers in zebrafish and the and the hypomorphic thoc1 in mouse induced hair cell apoptosis. Sources: Literature; to: Missense variant identified and segregated with adult-onset hearing loss in 9 affected family members. 12 unaffected individuals also tested. Functional studies showed THOC1 was expressed in mouse and zebrafish hair cells. Furthermore, thoc1 deficiency caused the reduction of hair cell numbers in zebrafish and the hypomorphic thoc1 in mouse induced hair cell apoptosis. Sources: Literature |
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| Deafness_IsolatedAndComplex v0.586 | THOC1 |
Melanie Marty changed review comment from: Missense variant identified and segregated with adult-onset hearing loss in 9 affected family members. 12 unaffected individuals also tested. Functional studies showed THOC1 was expressed in mouse and zebrafish hair cells. Furthermore, thoc1 deficiency caused the reduction of hair cell numbers in zebrafish and in mouse it induced hair cell apoptosis. Sources: Literature; to: Missense variant identified and segregated with adult-onset hearing loss in 9 affected family members. 12 unaffected individuals also tested. Functional studies showed THOC1 was expressed in mouse and zebrafish hair cells. Furthermore, thoc1 deficiency caused the reduction of hair cell numbers in zebrafish and the and the hypomorphic thoc1 in mouse induced hair cell apoptosis. Sources: Literature |
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| Deafness_IsolatedAndComplex v0.586 | THOC1 |
Melanie Marty gene: THOC1 was added gene: THOC1 was added to Deafness_IsolatedAndComplex. Sources: Literature Mode of inheritance for gene: THOC1 was set to MONOALLELIC, autosomal or pseudoautosomal, NOT imprinted Publications for gene: THOC1 were set to 32776944 Phenotypes for gene: THOC1 were set to Nonsyndromic hearing loss Review for gene: THOC1 was set to AMBER Added comment: Missense variant identified and segregated with adult-onset hearing loss in 9 affected family members. 12 unaffected individuals also tested. Functional studies showed THOC1 was expressed in mouse and zebrafish hair cells. Furthermore, thoc1 deficiency caused the reduction of hair cell numbers in zebrafish and in mouse it induced hair cell apoptosis. Sources: Literature |
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