rs551141480

Variant summary

Our verdict is Benign. Variant got -16 ACMG points: 0P and 16B. BP4_StrongBP6_Very_StrongBS2

The NM_001103.4(ACTN2):​c.22G>A​(p.Val8Met) variant causes a missense change. The variant allele was found at a frequency of 0.0000492 in 1,566,538 control chromosomes in the GnomAD database, with no homozygous occurrence. In-silico tool predicts a benign outcome for this variant. Variant has been reported in ClinVar as Likely benign (★★). Another variant affecting the same amino acid position, but resulting in a different missense (i.e. V8L) has been classified as Uncertain significance.

Frequency

Genomes: 𝑓 0.000020 ( 0 hom., cov: 31)
Exomes 𝑓: 0.000052 ( 0 hom. )

Consequence

ACTN2
NM_001103.4 missense

Scores

2
2
15

Clinical Significance

Likely benign criteria provided, multiple submitters, no conflicts B:3

Conservation

PhyloP100: 5.05
Variant links:
Genes affected
ACTN2 (HGNC:164): (actinin alpha 2) Alpha actinins belong to the spectrin gene superfamily which represents a diverse group of cytoskeletal proteins, including the alpha and beta spectrins and dystrophins. Alpha actinin is an actin-binding protein with multiple roles in different cell types. In nonmuscle cells, the cytoskeletal isoform is found along microfilament bundles and adherens-type junctions, where it is involved in binding actin to the membrane. In contrast, skeletal, cardiac, and smooth muscle isoforms are localized to the Z-disc and analogous dense bodies, where they help anchor the myofibrillar actin filaments. This gene encodes a muscle-specific, alpha actinin isoform that is expressed in both skeletal and cardiac muscles. Several transcript variants encoding different isoforms have been found for this gene. [provided by RefSeq, May 2013]

Genome browser will be placed here

ACMG classification

Classification made for transcript

Verdict is Benign. Variant got -16 ACMG points.

BP4
Computational evidence support a benign effect (MetaRNN=0.051699042).
BP6
Variant 1-236686695-G-A is Benign according to our data. Variant chr1-236686695-G-A is described in ClinVar as [Likely_benign]. Clinvar id is 570006.Status of the report is criteria_provided_multiple_submitters_no_conflicts, 2 stars. Variant chr1-236686695-G-A is described in Lovd as [Likely_benign].
BS2
High AC in GnomAdExome4 at 74 AD gene.

Transcripts

RefSeq

Gene Transcript HGVSc HGVSp Effect Exon rank MANE Protein UniProt
ACTN2NM_001103.4 linkc.22G>A p.Val8Met missense_variant Exon 1 of 21 ENST00000366578.6 NP_001094.1 P35609-1
ACTN2NM_001278343.2 linkc.22G>A p.Val8Met missense_variant Exon 1 of 21 NP_001265272.1 P35609-2
ACTN2NR_184402.1 linkn.197G>A non_coding_transcript_exon_variant Exon 1 of 23

Ensembl

Gene Transcript HGVSc HGVSp Effect Exon rank TSL MANE Protein Appris UniProt
ACTN2ENST00000366578.6 linkc.22G>A p.Val8Met missense_variant Exon 1 of 21 1 NM_001103.4 ENSP00000355537.4 P35609-1

Frequencies

GnomAD3 genomes
AF:
0.0000198
AC:
3
AN:
151802
Hom.:
0
Cov.:
31
show subpopulations
Gnomad AFR
AF:
0.00
Gnomad AMI
AF:
0.00
Gnomad AMR
AF:
0.00
Gnomad ASJ
AF:
0.00
Gnomad EAS
AF:
0.00
Gnomad SAS
AF:
0.000622
Gnomad FIN
AF:
0.00
Gnomad MID
AF:
0.00
Gnomad NFE
AF:
0.00
Gnomad OTH
AF:
0.00
GnomAD3 exomes
AF:
0.0000961
AC:
21
AN:
218624
Hom.:
0
AF XY:
0.000175
AC XY:
21
AN XY:
119668
show subpopulations
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 SAS exome
AF:
0.000776
Gnomad FIN exome
AF:
0.00
Gnomad NFE exome
AF:
0.00
Gnomad OTH exome
AF:
0.00
GnomAD4 exome
AF:
0.0000523
AC:
74
AN:
1414628
Hom.:
0
Cov.:
31
AF XY:
0.0000938
AC XY:
66
AN XY:
703874
show subpopulations
Gnomad4 AFR exome
AF:
0.00
Gnomad4 AMR exome
AF:
0.00
Gnomad4 ASJ exome
AF:
0.00
Gnomad4 EAS exome
AF:
0.00
Gnomad4 SAS exome
AF:
0.000877
Gnomad4 FIN exome
AF:
0.00
Gnomad4 NFE exome
AF:
9.19e-7
Gnomad4 OTH exome
AF:
0.0000173
GnomAD4 genome
AF:
0.0000197
AC:
3
AN:
151910
Hom.:
0
Cov.:
31
AF XY:
0.0000269
AC XY:
2
AN XY:
74266
show subpopulations
Gnomad4 AFR
AF:
0.00
Gnomad4 AMR
AF:
0.00
Gnomad4 ASJ
AF:
0.00
Gnomad4 EAS
AF:
0.00
Gnomad4 SAS
AF:
0.000622
Gnomad4 FIN
AF:
0.00
Gnomad4 NFE
AF:
0.00
Gnomad4 OTH
AF:
0.00
Alfa
AF:
0.0000896
Hom.:
0
Bravo
AF:
0.0000113
ExAC
AF:
0.000116
AC:
14

ClinVar

Significance: Likely benign
Submissions summary: Benign:3
Revision: criteria provided, multiple submitters, no conflicts
LINK: link

Submissions by phenotype

not specified Benign:1
Feb 03, 2025
Women's Health and Genetics/Laboratory Corporation of America, LabCorp
Significance: Likely benign
Review Status: criteria provided, single submitter
Collection Method: clinical testing

- -

Primary familial hypertrophic cardiomyopathy;C2677338:Dilated cardiomyopathy 1AA Benign:1
Dec 24, 2024
Labcorp Genetics (formerly Invitae), Labcorp
Significance: Likely benign
Review Status: criteria provided, single submitter
Collection Method: clinical testing

- -

Cardiovascular phenotype Benign:1
Oct 12, 2023
Ambry Genetics
Significance: Likely benign
Review Status: criteria provided, single submitter
Collection Method: clinical testing

This alteration is classified as likely benign based on a combination of the following: seen in unaffected individuals, population frequency, intact protein function, lack of segregation with disease, co-occurrence, RNA analysis, in silico models, amino acid conservation, lack of disease association in case-control studies, and/or the mechanism of disease or impacted region is inconsistent with a known cause of pathogenicity. -

Computational scores

Source: dbNSFP v4.3

Name
Calibrated prediction
Score
Prediction
AlphaMissense
Benign
0.085
BayesDel_addAF
Benign
-0.31
T
BayesDel_noAF
Benign
-0.30
CADD
Uncertain
25
DANN
Uncertain
0.98
DEOGEN2
Benign
0.27
.;T
Eigen
Benign
-0.44
Eigen_PC
Benign
-0.26
FATHMM_MKL
Uncertain
0.87
D
LIST_S2
Benign
0.81
T;T
M_CAP
Pathogenic
0.58
D
MetaRNN
Benign
0.052
T;T
MetaSVM
Benign
-0.94
T
MutationAssessor
Benign
1.6
L;L
PrimateAI
Pathogenic
0.83
D
PROVEAN
Benign
0.22
N;N
REVEL
Benign
0.20
Sift
Benign
0.47
T;T
Sift4G
Benign
0.36
T;T
Polyphen
0.0040
.;B
Vest4
0.099
MutPred
0.21
Loss of catalytic residue at V8 (P = 0.0203);Loss of catalytic residue at V8 (P = 0.0203);
MVP
0.66
MPC
0.85
ClinPred
0.078
T
GERP RS
2.8
Varity_R
0.066
gMVP
0.56

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

LitVar

Below is the list of publications found by LitVar. It may be empty.

Other links and lift over

dbSNP: rs551141480; hg19: chr1-236849995; COSMIC: COSV63975552; API