rs377129275
Variant summary
Our verdict is Uncertain significance. The variant received 1 ACMG points: 1P and 0B. PP3
The NM_016373.4(WWOX):c.1131C>A(p.Asn377Lys) variant causes a missense change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.0000657 in 1,614,096 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. N377S) has been classified as Uncertain significance.
Frequency
Consequence
NM_016373.4 missense
Scores
Clinical Significance
Conservation
Publications
- Ayme-Gripp syndromeInheritance: AD Classification: DEFINITIVE, STRONG Submitted by: Labcorp Genetics (formerly Invitae), Ambry Genetics, G2P
- cataract 21 multiple typesInheritance: AD Classification: DEFINITIVE, STRONG Submitted by: G2P, Ambry Genetics
- cataract - microcornea syndromeInheritance: AD Classification: SUPPORTIVE Submitted by: Orphanet
- cerulean cataractInheritance: AD Classification: SUPPORTIVE Submitted by: Orphanet
- pulverulent cataractInheritance: AD Classification: SUPPORTIVE Submitted by: Orphanet
- Fine-Lubinsky syndromeInheritance: AR Classification: SUPPORTIVE Submitted by: Orphanet
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ACMG classification
Our verdict: Uncertain_significance. The variant received 1 ACMG points.
Transcripts
RefSeq
| Gene | Transcript | HGVSc | HGVSp | Effect | Exon rank | MANE | Protein | UniProt | 
|---|---|---|---|---|---|---|---|---|
| WWOX | NM_016373.4 | c.1131C>A | p.Asn377Lys | missense_variant | Exon 9 of 9 | ENST00000566780.6 | NP_057457.1 | 
Ensembl
Frequencies
GnomAD3 genomes  0.0000197  AC: 3AN: 152202Hom.:  0  Cov.: 33 show subpopulations 
GnomAD2 exomes  AF:  0.0000200  AC: 5AN: 249558 AF XY:  0.0000222   show subpopulations 
GnomAD4 exome  AF:  0.0000705  AC: 103AN: 1461894Hom.:  0  Cov.: 88 AF XY:  0.0000729  AC XY: 53AN XY: 727248 show subpopulations 
Age Distribution
GnomAD4 genome  0.0000197  AC: 3AN: 152202Hom.:  0  Cov.: 33 AF XY:  0.0000135  AC XY: 1AN XY: 74340 show subpopulations 
Age Distribution
ClinVar
Submissions by phenotype
Autosomal recessive spinocerebellar ataxia 12;C3463992:Developmental and epileptic encephalopathy, 1    Uncertain:1 
This sequence change replaces asparagine, which is neutral and polar, with lysine, which is basic and polar, at codon 377 of the WWOX protein (p.Asn377Lys). This variant is present in population databases (rs377129275, gnomAD 0.01%). This variant has not been reported in the literature in individuals affected with WWOX-related conditions. ClinVar contains an entry for this variant (Variation ID: 540234). Invitae Evidence Modeling of protein sequence and biophysical properties (such as structural, functional, and spatial information, amino acid conservation, physicochemical variation, residue mobility, and thermodynamic stability) indicates that this missense variant is not expected to disrupt WWOX protein function with a negative predictive value of 80%. 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. -
Inborn genetic diseases    Uncertain:1 
The c.1131C>A (p.N377K) alteration is located in exon 9 (coding exon 9) of the WWOX gene. This alteration results from a C to A substitution at nucleotide position 1131, causing the asparagine (N) at amino acid position 377 to be replaced by a lysine (K). Based on insufficient or conflicting evidence, the clinical significance of this alteration remains unclear. -
Developmental and epileptic encephalopathy, 28    Uncertain:1 
PM2, PM3 -
not provided    Uncertain:1 
Not observed at significant frequency in large population cohorts (gnomAD); 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 -
Computational scores
Source: 
Splicing
 Find out detailed SpliceAI scores and Pangolin per-transcript scores at