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

Genomes: not found (cov: 33)
Exomes 𝑓: 6.8e-7 ( 0 hom. )

Consequence

SOD1
NM_000454.5 missense

Scores

10
5
4

Clinical Significance

Pathogenic criteria provided, multiple submitters, no conflicts P:2

Conservation

PhyloP100: 0.0140

Publications

10 publications found
Variant links:
Genes affected
SOD1 (HGNC:11179): (superoxide dismutase 1) The protein encoded by this gene binds copper and zinc ions and is one of two isozymes responsible for destroying free superoxide radicals in the body. The encoded isozyme is a soluble cytoplasmic protein, acting as a homodimer to convert naturally-occuring but harmful superoxide radicals to molecular oxygen and hydrogen peroxide. The other isozyme is a mitochondrial protein. In addition, this protein contains an antimicrobial peptide that displays antibacterial, antifungal, and anti-MRSA activity against E. coli, E. faecalis, S. aureus, S. aureus MRSA LPV+, S. agalactiae, and yeast C. krusei. Mutations in this gene have been implicated as causes of familial amyotrophic lateral sclerosis. Rare transcript variants have been reported for this gene. [provided by RefSeq, Jul 2020]
SOD1 Gene-Disease associations (from GenCC):
  • amyotrophic lateral sclerosis type 1
    Inheritance: AD, AR Classification: DEFINITIVE, STRONG Submitted by: ClinGen, Genomics England PanelApp, Labcorp Genetics (formerly Invitae)
  • spastic tetraplegia and axial hypotonia, progressive
    Inheritance: AR Classification: STRONG, LIMITED Submitted by: Ambry Genetics, Labcorp Genetics (formerly Invitae)
  • amyotrophic lateral sclerosis
    Inheritance: AD Classification: SUPPORTIVE Submitted by: Orphanet

Genome browser will be placed here

ACMG classification

Classification was made for transcript

Our verdict: Pathogenic. The variant received 17 ACMG points.

PM1
In a hotspot region, there are 19 aminoacids with missense pathogenic changes in the window of +-8 aminoacids around while only 0 benign, 5 uncertain in NM_000454.5
PM2
Very rare variant in population databases, with high coverage;
PP2
Missense variant in the gene, where a lot of missense mutations are associated with disease in ClinVar. The gene has 96 curated pathogenic missense variants (we use a threshold of 10). The gene has 0 curated benign missense variants. Gene score misZ: 0.83817 (below the threshold of 3.09). Trascript score misZ: 1.2198 (below the threshold of 3.09). GenCC associations: The gene is linked to amyotrophic lateral sclerosis type 1, amyotrophic lateral sclerosis, spastic tetraplegia and axial hypotonia, progressive.
PP3
MetaRNN computational evidence supports a deleterious effect, 0.995
PP5
Variant 21-31668533-C-A is Pathogenic according to our data. Variant chr21-31668533-C-A is described in ClinVar as Pathogenic. ClinVar VariationId is 586635.Status of the report is criteria_provided_multiple_submitters_no_conflicts, 2 stars.

Transcripts

RefSeq

Gene Transcript HGVSc HGVSp Effect Exon rank MANE Protein UniProt
SOD1NM_000454.5 linkc.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
SOD1ENST00000270142.11 linkc.420C>A p.Asn140Lys missense_variant Exon 5 of 5 1 NM_000454.5 ENSP00000270142.7 P00441
SOD1ENST00000389995.4 linkc.363C>A p.Asn121Lys missense_variant Exon 5 of 5 3 ENSP00000374645.4 H7BYH4
SOD1ENST00000470944.1 linkn.1348C>A non_coding_transcript_exon_variant Exon 5 of 5 2

Frequencies

GnomAD3 genomes
Cov.:
33
GnomAD2 exomes
AF:
0.00
AC:
0
AN:
251266
AF XY:
0.00
Gnomad AFR exome
AF:
0.00
Gnomad AMR exome
AF:
0.00
Gnomad ASJ exome
AF:
0.00
Gnomad EAS exome
AF:
0.00
Gnomad FIN exome
AF:
0.00
Gnomad NFE exome
AF:
0.00
Gnomad OTH exome
AF:
0.00
GnomAD4 exome
AF:
6.84e-7
AC:
1
AN:
1461672
Hom.:
0
Cov.:
30
AF XY:
0.00000138
AC XY:
1
AN XY:
727140
show subpopulations
African (AFR)
AF:
0.0000299
AC:
1
AN:
33478
American (AMR)
AF:
0.00
AC:
0
AN:
44722
Ashkenazi Jewish (ASJ)
AF:
0.00
AC:
0
AN:
26132
East Asian (EAS)
AF:
0.00
AC:
0
AN:
39680
South Asian (SAS)
AF:
0.00
AC:
0
AN:
86252
European-Finnish (FIN)
AF:
0.00
AC:
0
AN:
53414
Middle Eastern (MID)
AF:
0.00
AC:
0
AN:
5766
European-Non Finnish (NFE)
AF:
0.00
AC:
0
AN:
1111840
Other (OTH)
AF:
0.00
AC:
0
AN:
60388
Allele Balance Distribution
Red line indicates average allele balance
Average allele balance: 0.425
Heterozygous variant carriers
0
0
1
1
2
2
0.00
0.20
0.40
0.60
0.80
0.95
Allele balance

Age Distribution

Exome Het
Variant carriers
0
2
4
6
8
10
<30
30-35
35-40
40-45
45-50
50-55
55-60
60-65
65-70
70-75
75-80
>80
Age
GnomAD4 genome
Cov.:
33
Alfa
AF:
0.00
Hom.:
0

ClinVar

Significance: Pathogenic
Submissions summary: Pathogenic:2
Revision: criteria provided, multiple submitters, no conflicts
LINK: link

Submissions by phenotype

Amyotrophic lateral sclerosis type 1 Pathogenic:1
Oct 30, 2024
Labcorp Genetics (formerly Invitae), Labcorp
Significance:Pathogenic
Review Status:criteria provided, single submitter
Collection Method:clinical testing

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
Dec 30, 2017
Athena Diagnostics
Significance:Pathogenic
Review Status:criteria provided, single submitter
Collection Method:clinical testing

- -

Computational scores

Source: dbNSFP v4.3

Name
Calibrated prediction
Score
Prediction
AlphaMissense
Pathogenic
0.93
BayesDel_addAF
Uncertain
0.10
D
BayesDel_noAF
Uncertain
0.090
CADD
Benign
15
DANN
Uncertain
0.99
DEOGEN2
Pathogenic
0.98
D;.
Eigen
Benign
0.18
Eigen_PC
Benign
-0.031
FATHMM_MKL
Benign
0.73
D
LIST_S2
Uncertain
0.87
D;D
M_CAP
Pathogenic
0.96
D
MetaRNN
Pathogenic
0.99
D;D
MetaSVM
Pathogenic
1.1
D
MutationAssessor
Pathogenic
4.0
H;.
PhyloP100
0.014
PrimateAI
Uncertain
0.71
T
PROVEAN
Pathogenic
-5.5
D;D
REVEL
Pathogenic
0.87
Sift
Pathogenic
0.0
D;D
Sift4G
Pathogenic
0.0010
D;D
Polyphen
1.0
D;.
Vest4
0.86
MutPred
0.95
Gain of ubiquitination at N140 (P = 0.0146);.;
MVP
1.0
MPC
2.5
ClinPred
1.0
D
GERP RS
-2.2
RBP_binding_hub_radar
0.0
RBP_regulation_power_radar
1.7
Varity_R
0.97
gMVP
0.95
Mutation Taster
=3/97
disease causing (ClinVar)

Splicing

Name
Calibrated prediction
Score
Prediction
SpliceAI score (max)
0.0
Details are displayed if max score is > 0.2

Find out detailed SpliceAI scores and Pangolin per-transcript scores at spliceailookup.broadinstitute.org

Publications

Other links and lift over

dbSNP: rs1804449; hg19: chr21-33040846; API