NM_001103.4:c.351T>C

Variant names:

Variant summary

Our verdict is Benign. The variant received -21 ACMG points: 0P and 21B. BP4_StrongBP6_Very_StrongBP7BA1

The NM_001103.4(ACTN2):c.351T>C(p.Ile117Ile) variant causes a synonymous change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.999 in 1,614,080 control chromosomes in the GnomAD database, including 805,076 homozygotes. In-silico tool predicts a benign outcome for this variant. Variant has been reported in ClinVar as Benign (★★).

Frequency

Genomes: 𝑓 0.99 ( 75116 hom., cov: 31)

Exomes 𝑓: 1.0 ( 729960 hom. )

Consequence

ACTN2
NM_001103.4 synonymous

Scores

Clinical Significance

Benign criteria provided, multiple submitters, no conflicts B:7

Conservation

PhyloP100: 0.0370

Publications

20 publications found

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]

ACTN2 Gene-Disease associations (from GenCC):

intrinsic cardiomyopathy
Inheritance: AD Classification: DEFINITIVE, MODERATE Submitted by: Laboratory for Molecular Medicine, ClinGen
myopathy, congenital, with structured cores and z-line abnormalities
Inheritance: AD Classification: STRONG, MODERATE Submitted by: Ambry Genetics, Labcorp Genetics (formerly Invitae)
dilated cardiomyopathy 1AA
Inheritance: AD Classification: MODERATE, LIMITED Submitted by: PanelApp Australia, Labcorp Genetics (formerly Invitae), Ambry Genetics
familial isolated dilated cardiomyopathy
Inheritance: AD Classification: SUPPORTIVE Submitted by: Orphanet
heart conduction disease
Inheritance: AD Classification: LIMITED Submitted by: Genomics England PanelApp
myopathy, distal, 6, adult-onset, autosomal dominant
Inheritance: AD, Unknown Classification: LIMITED Submitted by: Broad Center for Mendelian Genomics, Labcorp Genetics (formerly Invitae)

ACTN2 links:

Genome browser will be placed here

ACMG classification

Classification was made for transcript

Our verdict: Benign. The variant received -21 ACMG points.

BP4

Computational evidence support a benign effect (BayesDel_noAF=-0.63).

BP6

Variant 1-236719003-T-C is Benign according to our data. Variant chr1-236719003-T-C is described in ClinVar as Benign. ClinVar VariationId is 43937.Status of the report is criteria_provided_multiple_submitters_no_conflicts, 2 stars.

BP7

Synonymous conserved (PhyloP=0.037 with no splicing effect.

BA1

GnomAd4 highest subpopulation (EAS) allele frequency at 95% confidence interval = 0.994 is higher than 0.05.

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	MANE	Protein	UniProt
ACTN2	NM_001103.4 link	c.351T>C	p.Ile117Ile	synonymous_variant	Exon 3 of 21	ENST00000366578.6	NP_001094.1	P35609-1
ACTN2	NM_001278343.2 link	c.351T>C	p.Ile117Ile	synonymous_variant	Exon 3 of 21		NP_001265272.1	P35609-2
ACTN2	NR_184402.1 link	n.526T>C		non_coding_transcript_exon_variant	Exon 3 of 23

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	TSL	MANE	Protein	Appris	UniProt
ACTN2	ENST00000366578.6 link	c.351T>C	p.Ile117Ile	synonymous_variant	Exon 3 of 21	1	NM_001103.4	ENSP00000355537.4		P35609-1

Frequencies

GnomAD3 genomes

AF:

0.993

AC:

151124

AN:

152144

Hom.:

75062

Cov.:

show subpopulations

Gnomad AFR

AF:

0.978

Gnomad AMI

AF:

1.00

Gnomad AMR

AF:

0.996

Gnomad ASJ

AF:

1.00

Gnomad EAS

AF:

1.00

Gnomad SAS

AF:

1.00

Gnomad FIN

AF:

1.00

Gnomad MID

AF:

1.00

Gnomad NFE

AF:

1.00

Gnomad OTH

AF:

0.990

GnomAD2 exomes

AF:

0.998

AC:

251040

AN:

251446

AF XY:

0.999

show subpopulations

Gnomad AFR exome

AF:

0.978

Gnomad AMR exome

AF:

0.999

Gnomad ASJ exome

AF:

1.00

Gnomad EAS exome

AF:

1.00

Gnomad FIN exome

AF:

1.00

Gnomad NFE exome

AF:

1.00

Gnomad OTH exome

AF:

0.999

GnomAD4 exome

AF:

0.999

AC:

1460861

AN:

1461818

Hom.:

729960

Cov.:

AF XY:

0.999

AC XY:

726828

AN XY:

727218

show subpopulations

African (AFR)

AF:

0.978

AC:

32727

AN:

33478

American (AMR)

AF:

0.999

AC:

44662

AN:

44720

Ashkenazi Jewish (ASJ)

AF:

1.00

AC:

26132

AN:

26132

East Asian (EAS)

AF:

1.00

AC:

39697

AN:

39698

South Asian (SAS)

AF:

1.00

AC:

86248

AN:

86256

European-Finnish (FIN)

AF:

1.00

AC:

53416

AN:

53416

Middle Eastern (MID)

AF:

0.999

AC:

5740

AN:

5746

European-Non Finnish (NFE)

AF:

1.00

AC:

1111938

AN:

1111984

Other (OTH)

AF:

0.999

AC:

60301

AN:

60388

Allele Balance Distribution

Red line indicates average allele balance

Average allele balance: 0.481

Heterozygous variant carriers

122

184

245

306

0.00

0.20

0.40

0.60

0.80

0.95

Allele balance

Age Distribution

Exome Het

Exome Hom

Variant carriers

21672

43344

65016

86688

108360

<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

AF:

0.993

AC:

151237

AN:

152262

Hom.:

75116

Cov.:

AF XY:

0.993

AC XY:

73941

AN XY:

74436

show subpopulations

African (AFR)

AF:

0.978

AC:

40627

AN:

41556

American (AMR)

AF:

0.996

AC:

15207

AN:

15274

Ashkenazi Jewish (ASJ)

AF:

1.00

AC:

3472

AN:

3472

East Asian (EAS)

AF:

1.00

AC:

5172

AN:

5172

South Asian (SAS)

AF:

1.00

AC:

4820

AN:

4820

European-Finnish (FIN)

AF:

1.00

AC:

10612

AN:

10612

Middle Eastern (MID)

AF:

1.00

AC:

294

AN:

294

European-Non Finnish (NFE)

AF:

1.00

AC:

68025

AN:

68034

Other (OTH)

AF:

0.991

AC:

2096

AN:

2116

Allele Balance Distribution

Red line indicates average allele balance

Average allele balance: 0.505

Heterozygous variant carriers

104

155

207

259

0.00

0.20

0.40

0.60

0.80

0.95

Allele balance

Age Distribution

Genome Het

Genome Hom

Variant carriers

916

1832

2748

3664

4580

<30

30-35

35-40

40-45

45-50

50-55

55-60

60-65

65-70

70-75

75-80

>80

Age

Alfa

AF:

0.998

Hom.:

44729

Bravo

AF:

0.992

Asia WGS

AF:

0.998

AC:

3472

AN:

3478

EpiCase

AF:

1.00

EpiControl

AF:

1.00

ClinVar

Significance: Benign

Submissions summary: Benign:7

Revision: criteria provided, multiple submitters, no conflicts

LINK: link

Submissions by phenotype

not specified

Benign:3

Jul 20, 2011

Laboratory for Molecular Medicine, Mass General Brigham Personalized Medicine

Significance:Benign

Review Status:criteria provided, single submitter

Collection Method:clinical testing

- -

Diagnostic Laboratory, Department of Genetics, University Medical Center Groningen

Significance:Benign

Review Status:no assertion criteria provided

Collection Method:clinical testing

- -

Clinical Genetics, Academic Medical Center

Significance:Benign

Review Status:no assertion criteria provided

Collection Method:clinical testing

- -

Primary familial hypertrophic cardiomyopathy;C2677338:Dilated cardiomyopathy 1AA

Benign:1

Feb 04, 2025

Labcorp Genetics (formerly Invitae), Labcorp

Significance:Benign

Review Status:criteria provided, single submitter

Collection Method:clinical testing

- -

not provided

Benign:1

Breakthrough Genomics, Breakthrough Genomics

Significance:Benign

Review Status:criteria provided, single submitter

Collection Method:not provided

- -

Myopathy, congenital, with structured cores and z-line abnormalities

Benign:1

Jul 14, 2021

Genome-Nilou Lab

Significance:Benign

Review Status:criteria provided, single submitter

Collection Method:clinical testing

- -

Cardiovascular phenotype

Benign:1

Mar 11, 2015

Ambry Genetics

Significance:Benign

Review Status:criteria provided, single submitter

Collection Method:clinical testing

- -

Computational scores

Source: dbNSFP v4.3

Name

Calibrated prediction

Score

Prediction

BayesDel_noAF

Benign

-0.63

CADD

Benign

5.7

(source)

DANN

Benign

0.74

PhyloP100

0.037

Mutation Taster

=90/10

polymorphism (auto)

(source)

Splicing

Name

Calibrated prediction

Score

Prediction

SpliceAI score (max)

0.020

Details are displayed if max score is > 0.2

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

Publications

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Variant summary

Frequency

Consequence

Scores

Clinical Significance

Conservation

Publications

ACMG classification

Transcripts

RefSeq

Ensembl

Frequencies

Age Distribution

Age Distribution

ClinVar

Submissions by phenotype

Computational scores

Splicing

Publications

Other links and lift over