rs1804449
Variant summary
Our verdict is Pathogenic. The variant received 17 ACMG points: 17P and 0B. PM1PM2PP2PP3_StrongPP5_Very_Strong
The NM_000454.5(SOD1):c.420C>A(p.Asn140Lys) variant causes a missense change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.000000684 in 1,461,672 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 Pathogenic (★★). Synonymous variant affecting the same amino acid position (i.e. N140N) has been classified as Likely benign.
Frequency
Consequence
NM_000454.5 missense
Scores
Clinical Significance
Conservation
Publications
- amyotrophic lateral sclerosis type 1Inheritance: AD, AR Classification: DEFINITIVE, STRONG Submitted by: ClinGen, Genomics England PanelApp, Labcorp Genetics (formerly Invitae)
- spastic tetraplegia and axial hypotonia, progressiveInheritance: AR Classification: STRONG, LIMITED Submitted by: Ambry Genetics, Labcorp Genetics (formerly Invitae)
- amyotrophic lateral sclerosisInheritance: AD Classification: SUPPORTIVE Submitted by: Orphanet
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ACMG classification
Our verdict: Pathogenic. The variant received 17 ACMG points.
Transcripts
RefSeq
| Gene | Transcript | HGVSc | HGVSp | Effect | Exon rank | MANE | Protein | UniProt |
|---|---|---|---|---|---|---|---|---|
| SOD1 | NM_000454.5 | c.420C>A | p.Asn140Lys | missense_variant | Exon 5 of 5 | ENST00000270142.11 | NP_000445.1 |
Ensembl
| Gene | Transcript | HGVSc | HGVSp | Effect | Exon rank | TSL | MANE | Protein | Appris | UniProt |
|---|---|---|---|---|---|---|---|---|---|---|
| SOD1 | ENST00000270142.11 | c.420C>A | p.Asn140Lys | missense_variant | Exon 5 of 5 | 1 | NM_000454.5 | ENSP00000270142.7 | ||
| SOD1 | ENST00000389995.4 | c.363C>A | p.Asn121Lys | missense_variant | Exon 5 of 5 | 3 | ENSP00000374645.4 | |||
| SOD1 | ENST00000470944.1 | n.1348C>A | non_coding_transcript_exon_variant | Exon 5 of 5 | 2 |
Frequencies
GnomAD3 genomes Cov.: 33
GnomAD2 exomes AF: 0.00 AC: 0AN: 251266 AF XY: 0.00
GnomAD4 exome AF: 6.84e-7 AC: 1AN: 1461672Hom.: 0 Cov.: 30 AF XY: 0.00000138 AC XY: 1AN XY: 727140 show subpopulations
Age Distribution
GnomAD4 genome Cov.: 33
ClinVar
Submissions by phenotype
Amyotrophic lateral sclerosis type 1 Pathogenic:1
This sequence change replaces asparagine, which is neutral and polar, with lysine, which is basic and polar, at codon 140 of the SOD1 protein (p.Asn140Lys). The frequency data for this variant in the population databases is considered unreliable, as metrics indicate poor data quality at this position in the gnomAD database. This missense change has been observed in individuals with clinical features of autosomal dominant amyotrophic lateral sclerosis (PMID: 7887412, 14506936, 22292843, 23541756, 29149916, 34839512; internal data). This variant is also known as p.Asn139Lys. ClinVar contains an entry for this variant (Variation ID: 586635). 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 expected to disrupt SOD1 protein function with a positive predictive value of 95%. Experimental studies have shown that this missense change affects SOD1 function (PMID: 17255946, 19483195, 20399791, 23280792). For these reasons, this variant has been classified as Pathogenic. -
not provided Pathogenic:1
- -
Computational scores
Source:
Splicing
Find out detailed SpliceAI scores and Pangolin per-transcript scores at