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NM_000454.5(SOD1):c.272A>C (p.Asp91Ala) AND Amyotrophic lateral sclerosis

Germline classification:
Pathogenic (2 submissions)
Last evaluated:
Mar 30, 2023
Review status:
2 stars out of maximum of 4 stars
criteria provided, multiple submitters, no conflicts
Somatic classification
of clinical impact:
None
Review status:
(0/4) 0 stars out of maximum of 4 stars
no assertion criteria provided
Somatic classification
of oncogenicity:
None
Review status:
(0/4) 0 stars out of maximum of 4 stars
no assertion criteria provided
Record status:
current
Accession:
RCV001843455.4

Allele description [Variation Report for NM_000454.5(SOD1):c.272A>C (p.Asp91Ala)]

NM_000454.5(SOD1):c.272A>C (p.Asp91Ala)

Gene:
SOD1:superoxide dismutase 1 [Gene - OMIM - HGNC]
Variant type:
single nucleotide variant
Cytogenetic location:
21q22.11
Genomic location:
Preferred name:
NM_000454.5(SOD1):c.272A>C (p.Asp91Ala)
Other names:
D90A
HGVS:
  • NC_000021.9:g.31667290A>C
  • NG_008689.1:g.12669A>C
  • NM_000454.5:c.272A>CMANE SELECT
  • NP_000445.1:p.Asp91Ala
  • NP_000445.1:p.Asp91Ala
  • LRG_652t1:c.272A>C
  • LRG_652:g.12669A>C
  • LRG_652p1:p.Asp91Ala
  • NC_000021.8:g.33039603A>C
  • NM_000454.4:c.272A>C
  • P00441:p.Asp91Ala
Protein change:
D91A; ASP90ALA
Links:
UniProtKB: P00441#VAR_007145; OMIM: 147450.0015; dbSNP: rs80265967
NCBI 1000 Genomes Browser:
rs80265967
Molecular consequence:
  • NM_000454.5:c.272A>C - missense variant - [Sequence Ontology: SO:0001583]

Condition(s)

Name:
Amyotrophic lateral sclerosis (ALS)
Synonyms:
Lou Gehrig disease; Charcot disease
Identifiers:
MONDO: MONDO:0004976; MedGen: C0002736; Human Phenotype Ontology: HP:0007354

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Assertion and evidence details

Submission AccessionSubmitterReview Status
(Assertion method)
Clinical Significance
(Last evaluated)
OriginMethodCitations
SCV002103163Dept. of Medical Genetics, Telemark Hospital Trust, Telemark Hospital Trust
criteria provided, single submitter

(ACMG Guidelines, 2015)
Pathogenic
(Jan 1, 2022)
germlineresearch

PubMed (1)
[See all records that cite this PMID]

SCV004812670Molecular Genetics, Royal Melbourne Hospital

See additional submitters

criteria provided, single submitter

(ACMG Guidelines, 2015)
Pathogenic
(Mar 30, 2023)
germlineclinical testing

PubMed (15)
[See all records that cite these PMIDs]

Summary from all submissions

EthnicityOriginAffectedIndividualsFamiliesChromosomes testedNumber TestedFamily historyMethod
not providedgermlineyesnot providednot providednot providednot providednot providedresearch
not providedgermlineunknownnot providednot providednot providednot providednot providedclinical testing

Citations

PubMed

Amyotrophic lateral sclerosis associated with homozygosity for an Asp90Ala mutation in CuZn-superoxide dismutase.

Andersen PM, Nilsson P, Ala-Hurula V, Keränen ML, Tarvainen I, Haltia T, Nilsson L, Binzer M, Forsgren L, Marklund SL.

Nat Genet. 1995 May;10(1):61-6.

PubMed [citation]
PMID:
7647793

D90A heterozygosity in the SOD1 gene is associated with familial and apparently sporadic amyotrophic lateral sclerosis.

Robberecht W, Aguirre T, Van den Bosch L, Tilkin P, Cassiman JJ, Matthijs G.

Neurology. 1996 Nov;47(5):1336-9.

PubMed [citation]
PMID:
8909456
See all PubMed Citations (15)

Details of each submission

From Dept. of Medical Genetics, Telemark Hospital Trust, Telemark Hospital Trust, SCV002103163.1

#EthnicityIndividualsChromosomes TestedFamily HistoryMethodCitations
1not providednot providednot providednot providedresearch PubMed (1)
#SampleMethodObservation
OriginAffectedNumber testedTissuePurposeMethodIndividualsAllele frequencyFamiliesCo-occurrences
1germlineyesnot providednot providednot providednot providednot providednot providednot provided

From Molecular Genetics, Royal Melbourne Hospital, SCV004812670.1

#EthnicityIndividualsChromosomes TestedFamily HistoryMethodCitations
1not providednot providednot providednot providedclinical testing PubMed (15)

Description

This sequence change in SOD1 is predicted to replace aspartic acid with alanine at codon 91, p.(Asp91Ala). Historically this variant is known as p.(Asp90Ala) or p.D90A. The apartic acid residue is weakly conserved (100 vertebrates, UCSC), and is located in the Sod Cu domain. There is a large physicochemical difference between aspartic acid and alanine. The highest population minor allele frequency in gnomAD v2.1 is 1.2% (298/25,122 alleles, 3 homozygotes) in the Finnish population. Whereas, the highest continental population minor allele frequency in gnomAD v2.1 is 0.07% (96/129,186 alleles, 1 homozygote) in the European (non-Finnish) population. The homozygous individuals are absent from the non-neuro cohort in gnomAD v2.1. The variant is one of the most commonly reported SOD1 variants associated with amyotrophic lateral sclerosis (ALS) and is a Scandinavian founder, which shows both autosomal dominant and recessive patterns in different populations (PMID: 9817920, 12442272). The prevalence of the heterozygous variant in affected individuals is significantly increased compared with the prevalence in controls (odds ratio 2.82, 95% CI: 1.40-5.67) (PMID: 19965850, 23100398, 28105640, 28222900, 28430856, 28444446; gnomAD v2.1 European non-Finnish non-neuro cohort). This variant has been detected in the homozygous state in many individuals with ALS and compound heterozygous with a second allele in at two affected families (PMID: 7647793, 11220750, 34668453). The recessive and dominant kindreds reported with the variant share a rare haplotype, however a recessive founder arose subsequently through a recombination event. The homozygous phenotype is characterised by prolonged survival and slow progression of disease, whereas the affected heterozygous phenotypes can vary (PMID: 12442272). In recessive kindreds segregation with ALS is reported in homozygous individuals and heterozygous individuals are unaffected (PMID: 7647793, 12442272). Whereas, in dominant kindreds segregation of the heterozygous variant with disease is reported with incomplete penetrance (PMID: 8909456, 10809943). A homozygous mouse model recapitulates the human ALS phenotype (PMID: 17146286). Multiple lines of computational evidence have conflicting predictions for the missense substitution (5/6 algorithms predict benign). Based on the classification scheme RMH Modified ACMG Guidelines v1.5.1, this variant is classified as PATHOGENIC. Following criteria are met: PS3, PP1_Strong, PM3, PS4_Supporting.

#SampleMethodObservation
OriginAffectedNumber testedTissuePurposeMethodIndividualsAllele frequencyFamiliesCo-occurrences
1germlineunknownnot providednot providednot providednot providednot providednot providednot provided

Last Updated: Sep 29, 2024