chr12-80209493-TG-T
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Variant summary
Our verdict is Pathogenic. Variant got 18 ACMG points: 18P and 0B. PVS1PM2PP5_Very_Strong
The NM_001378609.3(OTOGL):βc.63delβ(p.Leu22CysfsTer14) variant causes a frameshift change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.0000614 in 1,497,204 control chromosomes in the GnomAD database, with no homozygous occurrence. Variant has been reported in ClinVar as Likely pathogenic (β β ).
Frequency
Genomes: π 0.000039 ( 0 hom., cov: 32)
Exomes π: 0.000064 ( 0 hom. )
Consequence
OTOGL
NM_001378609.3 frameshift
NM_001378609.3 frameshift
Scores
Not classified
Clinical Significance
Conservation
PhyloP100: 2.35
Genes affected
OTOGL (HGNC:26901): (otogelin like) The protein encoded by this gene belongs to the otogelin family. This gene is expressed in the inner ear of vertebrates with the highest level of expression seen at the embryonic stage and lowest in adult. Knockdown studies in zebrafish suggest that this gene is essential for normal inner ear function. Mutations in this gene are associated with autosomal recessive deafness. [provided by RefSeq, Dec 2012]
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ACMG classification
Classification made for transcript
Verdict is Pathogenic. Variant got 18 ACMG points.
PVS1
Loss of function variant, product does not undergo nonsense mediated mRNA decay. Variant located near the start codon (<100nt), not predicted to undergo nonsense mediated mRNA decay. There are 53 pathogenic variants in the truncated region.
PM2
Very rare variant in population databases, with high coverage;
PP5
Variant 12-80209493-TG-T is Pathogenic according to our data. Variant chr12-80209493-TG-T is described in ClinVar as [Likely_pathogenic]. Clinvar id is 817079.Status of the report is criteria_provided_multiple_submitters_no_conflicts, 2 stars.
Transcripts
RefSeq
Gene | Transcript | HGVSc | HGVSp | Effect | #exon/exons | MANE | UniProt |
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OTOGL | NM_001378609.3 | c.63del | p.Leu22CysfsTer14 | frameshift_variant | 2/59 | ENST00000547103.7 |
Ensembl
Gene | Transcript | HGVSc | HGVSp | Effect | #exon/exons | TSL | MANE | Appris | UniProt |
---|---|---|---|---|---|---|---|---|---|
OTOGL | ENST00000547103.7 | c.63del | p.Leu22CysfsTer14 | frameshift_variant | 2/59 | 5 | NM_001378609.3 | P1 | |
OTOGL | ENST00000646859.1 | c.63del | p.Leu22CysfsTer14 | frameshift_variant | 7/63 | ||||
OTOGL | ENST00000643417.1 | n.723del | non_coding_transcript_exon_variant | 5/23 |
Frequencies
GnomAD3 genomes AF: 0.0000394 AC: 6AN: 152204Hom.: 0 Cov.: 32
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GnomAD3 exomes AF: 0.00000763 AC: 1AN: 131040Hom.: 0 AF XY: 0.0000140 AC XY: 1AN XY: 71444
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GnomAD4 exome AF: 0.0000639 AC: 86AN: 1344882Hom.: 0 Cov.: 25 AF XY: 0.0000466 AC XY: 31AN XY: 665052
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GnomAD4 genome AF: 0.0000394 AC: 6AN: 152322Hom.: 0 Cov.: 32 AF XY: 0.0000269 AC XY: 2AN XY: 74478
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ClinVar
Significance: Pathogenic/Likely pathogenic
Submissions summary: Pathogenic:3
Revision: criteria provided, multiple submitters, no conflicts
LINK: link
Submissions by phenotype
not provided Pathogenic:2
Likely pathogenic, criteria provided, single submitter | clinical testing | GeneDx | Apr 20, 2018 | The c.36delG variant in the OTOGL gene has not been reported previously as a pathogenic variant nor as a benign variant, to our knowledge. The c.36delG variant causes a frameshift starting with codon Leucine 13, changes this amino acid to a Cysteine residue, and creates a premature Stop codon at position 14 of the new reading frame, denoted p.Leu13CysfsX14. This variant is predicted to cause loss of normal protein function either through protein truncation or nonsense-mediated mRNA decay. The c.36delG variant is not observed at a significant frequency in large population cohorts (Lek et al., 2016). We interpret c.36delG as a likely pathogenic variant. - |
Pathogenic, criteria provided, single submitter | clinical testing | Labcorp Genetics (formerly Invitae), Labcorp | Apr 08, 2022 | For these reasons, this variant has been classified as Pathogenic. ClinVar contains an entry for this variant (Variation ID: 817079). This variant has not been reported in the literature in individuals affected with OTOGL-related conditions. This variant is present in population databases (rs376104832, gnomAD 0.002%). This sequence change creates a premature translational stop signal (p.Leu13Cysfs*14) in the OTOGL gene. It is expected to result in an absent or disrupted protein product. Loss-of-function variants in OTOGL are known to be pathogenic (PMID: 23122586). - |
Autosomal recessive nonsyndromic hearing loss 84B Pathogenic:1
Likely pathogenic, criteria provided, single submitter | clinical testing | Fulgent Genetics, Fulgent Genetics | Feb 09, 2022 | - - |
Computational scores
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Details are displayed if max score is > 0.2
Find out detailed SpliceAI scores and Pangolin per-transcript scores at