1-216072904-G-A
Variant summary
Our verdict is Likely pathogenic. Variant got 6 ACMG points: 6P and 0B. PM1PM2PP3_Moderate
The NM_206933.4(USH2A):c.5842C>T(p.Arg1948Cys) variant causes a missense change involving the alteration of a conserved nucleotide. The variant allele was found at a frequency of 0.000018 in 1,613,572 control chromosomes in the GnomAD database, with no homozygous occurrence. In-silico tool predicts a pathogenic outcome for this variant. Variant has been reported in ClinVar as Uncertain significance (★★). Another variant affecting the same amino acid position, but resulting in a different missense (i.e. R1948H) has been classified as Uncertain significance.
Frequency
Consequence
NM_206933.4 missense
Scores
Clinical Significance
Conservation
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ACMG classification
Verdict is Likely_pathogenic. Variant got 6 ACMG points.
Transcripts
RefSeq
Gene | Transcript | HGVSc | HGVSp | Effect | #exon/exons | MANE | Protein | UniProt |
---|---|---|---|---|---|---|---|---|
USH2A | NM_206933.4 | c.5842C>T | p.Arg1948Cys | missense_variant | 29/72 | ENST00000307340.8 | NP_996816.3 | |
USH2A-AS2 | NR_125992.1 | n.136+304G>A | intron_variant | |||||
USH2A-AS2 | NR_125993.1 | n.136+304G>A | intron_variant |
Ensembl
Gene | Transcript | HGVSc | HGVSp | Effect | #exon/exons | TSL | MANE | Protein | Appris | UniProt |
---|---|---|---|---|---|---|---|---|---|---|
USH2A | ENST00000307340.8 | c.5842C>T | p.Arg1948Cys | missense_variant | 29/72 | 1 | NM_206933.4 | ENSP00000305941.3 |
Frequencies
GnomAD3 genomes AF: 0.0000263 AC: 4AN: 151984Hom.: 0 Cov.: 32
GnomAD3 exomes AF: 0.0000159 AC: 4AN: 250896Hom.: 0 AF XY: 0.00 AC XY: 0AN XY: 135564
GnomAD4 exome AF: 0.0000171 AC: 25AN: 1461588Hom.: 0 Cov.: 31 AF XY: 0.0000124 AC XY: 9AN XY: 727108
GnomAD4 genome AF: 0.0000263 AC: 4AN: 151984Hom.: 0 Cov.: 32 AF XY: 0.00 AC XY: 0AN XY: 74208
ClinVar
Submissions by phenotype
not provided Uncertain:2
Uncertain significance, criteria provided, single submitter | clinical testing | Labcorp Genetics (formerly Invitae), Labcorp | Feb 04, 2022 | This sequence change replaces arginine, which is basic and polar, with cysteine, which is neutral and slightly polar, at codon 1948 of the USH2A protein (p.Arg1948Cys). This variant is present in population databases (rs145647517, gnomAD 0.008%). This variant has not been reported in the literature in individuals affected with USH2A-related conditions. ClinVar contains an entry for this variant (Variation ID: 961305). Algorithms developed to predict the effect of missense changes on protein structure and function (SIFT, PolyPhen-2, Align-GVGD) all suggest that this variant is likely to be disruptive. In summary, the available evidence is currently insufficient to determine the role of this variant in disease. Therefore, it has been classified as a Variant of Uncertain Significance. - |
Uncertain significance, criteria provided, single submitter | clinical testing | GeneDx | Sep 29, 2022 | In silico analysis supports that this missense variant has a deleterious effect on protein structure/function; Has not been previously published as pathogenic or benign to our knowledge - |
Usher syndrome type 2A Uncertain:2
Uncertain significance, no assertion criteria provided | clinical testing | Natera, Inc. | Sep 23, 2020 | - - |
Uncertain significance, criteria provided, single submitter | clinical testing | Genome-Nilou Lab | Nov 04, 2023 | - - |
Inborn genetic diseases Uncertain:1
Uncertain significance, criteria provided, single submitter | clinical testing | Ambry Genetics | Aug 15, 2023 | The c.5842C>T (p.R1948C) alteration is located in exon 29 (coding exon 28) of the USH2A gene. This alteration results from a C to T substitution at nucleotide position 5842, causing the arginine (R) at amino acid position 1948 to be replaced by a cysteine (C). Based on insufficient or conflicting evidence, the clinical significance of this alteration remains unclear. - |
Retinitis pigmentosa 39 Uncertain:1
Uncertain significance, criteria provided, single submitter | clinical testing | Genome-Nilou Lab | Nov 04, 2023 | - - |
Retinal dystrophy Uncertain:1
Uncertain significance, no assertion criteria provided | clinical testing | Institute of Human Genetics, Univ. Regensburg, Univ. Regensburg | Jan 01, 2021 | - - |
Computational scores
Source:
Splicing
Find out detailed SpliceAI scores and Pangolin per-transcript scores at