Genetic Variant ACTN4:p.Pro179Leu (chr19-38706095-C-T) – ACMG Classification: Benign (-19 pts)

Variant summary

Our verdict is Benign. The variant received -19 ACMG points: 1P and 20B. PP3BP4_StrongBP6_Very_StrongBS1BS2

The NM_004924.6(ACTN4):c.536C>T(p.Pro179Leu) variant causes a missense change involving the alteration of a conserved nucleotide. The variant allele was found at a frequency of 0.000445 in 1,614,132 control chromosomes in the GnomAD database, including 3 homozygotes. In-silico tool predicts a benign outcome for this variant. Variant has been reported in ClinVar as Likely benign (★★). Synonymous variant affecting the same amino acid position (i.e. P179P) has been classified as Benign.

Frequency

Genomes: 𝑓 0.0025 ( 3 hom., cov: 33)

Exomes 𝑓: 0.00023 ( 0 hom. )

Consequence

ACTN4
NM_004924.6 missense

Scores

Clinical Significance

Benign/Likely benign criteria provided, multiple submitters, no conflicts B:7

Conservation

PhyloP100: 7.77

Publications

10 publications found

Variant links:

Genes affected

ACTN4 (HGNC:166): (actinin alpha 4) 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 nonmuscle, alpha actinin isoform which is concentrated in the cytoplasm, and thought to be involved in metastatic processes. Mutations in this gene have been associated with focal and segmental glomerulosclerosis. [provided by RefSeq, Jul 2008]

ACTN4 Gene-Disease associations (from GenCC):

focal segmental glomerulosclerosis 1
Inheritance: AD Classification: STRONG, MODERATE Submitted by: Ambry Genetics, Labcorp Genetics (formerly Invitae)
familial idiopathic steroid-resistant nephrotic syndrome
Inheritance: AD Classification: SUPPORTIVE Submitted by: Orphanet

ACTN4 links:

ENSG00000298338 (HGNC:):

ENSG00000298338 links:

Genome browser will be placed here

ACMG classification

Classification was made for transcript

Our verdict: Benign. The variant received -19 ACMG points.

PP3

Multiple lines of computational evidence support a deleterious effect 7: AlphaMissense, Cadd, phyloP100way_vertebrate, PrimateAI, PROVEAN, REVEL, REVEL [when BayesDel_addAF, max_spliceai, FATHMM_MKL, MetaRNN, MutationTaster was below the threshold]

BP4

Computational evidence support a benign effect (MetaRNN=0.0216088).

BP6

Variant 19-38706095-C-T is Benign according to our data. Variant chr19-38706095-C-T is described in ClinVar as Benign/Likely_benign. ClinVar VariationId is 259580.Status of the report is criteria_provided_multiple_submitters_no_conflicts, 2 stars.

BS1

Variant frequency is greater than expected in population afr. GnomAd4 allele frequency = 0.00254 (387/152300) while in subpopulation AFR AF = 0.00897 (373/41578). AF 95% confidence interval is 0.00822. There are 3 homozygotes in GnomAd4. There are 165 alleles in the male GnomAd4 subpopulation. Median coverage is 33. This position passed quality control check.

BS2

High AC in GnomAd4 at 387 AD gene.

Variant Effect in Transcripts

ACMG analysis was done for transcript: NM_004924.6. You can select a different transcript below to see updated ACMG assignments.

RefSeq Transcripts

Gene	Transcript	Tags	HGVSc	HGVSp	Effect	Exon Rank	Protein
ACTN4	NM_004924.6	MANE Select	c.536C>T	p.Pro179Leu	missense	Exon 5 of 21	NP_004915.2
ACTN4	NM_001440296.1		c.536C>T	p.Pro179Leu	missense	Exon 5 of 22	NP_001427225.1
ACTN4	NM_001440300.1		c.536C>T	p.Pro179Leu	missense	Exon 5 of 22	NP_001427229.1

Ensembl Transcripts

Gene	Transcript	Tags	HGVSc	HGVSp	Effect	Exon Rank	Protein	UniProt
ACTN4	ENST00000252699.7	TSL:1 MANE Select	c.536C>T	p.Pro179Leu	missense	Exon 5 of 21	ENSP00000252699.2	O43707-1
ACTN4	ENST00000424234.7	TSL:1	c.536C>T	p.Pro179Leu	missense	Exon 5 of 21	ENSP00000411187.4	F5GXS2
ACTN4	ENST00000390009.7	TSL:1	c.163-8374C>T		intron	N/A	ENSP00000439497.1	O43707-2

Frequencies

GnomAD3 genomes

AF:

0.00253

AC:

385

AN:

152182

Hom.:

Cov.:

show subpopulations

Gnomad AFR

AF:

0.00895

Gnomad AMI

AF:

0.00

Gnomad AMR

AF:

0.000589

Gnomad ASJ

AF:

0.00

Gnomad EAS

AF:

0.00

Gnomad SAS

AF:

0.00

Gnomad FIN

AF:

0.00

Gnomad MID

AF:

0.00

Gnomad NFE

AF:

0.0000441

Gnomad OTH

AF:

0.000956

GnomAD2 exomes

AF:

0.000608

AC:

153

AN:

251474

AF XY:

0.000375

show subpopulations

Gnomad AFR exome

AF:

0.00855

Gnomad AMR exome

AF:

0.000289

Gnomad ASJ exome

AF:

0.00

Gnomad EAS exome

AF:

0.00

Gnomad FIN exome

AF:

0.00

Gnomad NFE exome

AF:

0.00000879

Gnomad OTH exome

AF:

0.000163

GnomAD4 exome

AF:

0.000227

AC:

332

AN:

1461832

Hom.:

Cov.:

AF XY:

0.000193

AC XY:

140

AN XY:

727218

show subpopulations

African (AFR)

AF:

0.00792

AC:

265

AN:

33478

American (AMR)

AF:

0.000358

AC:

AN:

44722

Ashkenazi Jewish (ASJ)

AF:

0.00

AC:

AN:

26136

East Asian (EAS)

AF:

0.0000252

AC:

AN:

39694

South Asian (SAS)

AF:

0.0000580

AC:

AN:

86258

European-Finnish (FIN)

AF:

0.00

AC:

AN:

53412

Middle Eastern (MID)

AF:

0.00

AC:

AN:

5766

European-Non Finnish (NFE)

AF:

0.0000198

AC:

AN:

1111976

Other (OTH)

AF:

0.000381

AC:

AN:

60390

Allele Balance Distribution

Red line indicates average allele balance

Average allele balance: 0.478

Heterozygous variant carriers

100

0.00

0.20

0.40

0.60

0.80

0.95

Allele balance

Age Distribution

Exome Het

Variant carriers

<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:

0.00254

AC:

387

AN:

152300

Hom.:

Cov.:

AF XY:

0.00222

AC XY:

165

AN XY:

74458

show subpopulations

African (AFR)

AF:

0.00897

AC:

373

AN:

41578

American (AMR)

AF:

0.000589

AC:

AN:

15292

Ashkenazi Jewish (ASJ)

AF:

0.00

AC:

AN:

3470

East Asian (EAS)

AF:

0.00

AC:

AN:

5190

South Asian (SAS)

AF:

0.00

AC:

AN:

4824

European-Finnish (FIN)

AF:

0.00

AC:

AN:

10616

Middle Eastern (MID)

AF:

0.00

AC:

AN:

294

European-Non Finnish (NFE)

AF:

0.0000441

AC:

AN:

68010

Other (OTH)

AF:

0.000946

AC:

AN:

2114

Allele Balance Distribution

Red line indicates average allele balance

Average allele balance: 0.500

Heterozygous variant carriers

0.00

0.20

0.40

0.60

0.80

0.95

Allele balance

Age Distribution

Genome Het

Genome Hom

Variant carriers

<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:

0.000831

Hom.:

Bravo

AF:

0.00274

ESP6500AA

AF:

0.00862

AC:

ESP6500EA

AF:

0.00

AC:

ExAC

AF:

0.000725

AC:

Asia WGS

AF:

0.000289

AC:

AN:

3476

ClinVar

ClinVar submissions

Significance:Benign/Likely benign

Revision:criteria provided, multiple submitters, no conflicts

View on ClinVar

Pathogenic

VUS

Benign

Condition

not provided (3)

not specified (2)

Focal segmental glomerulosclerosis (1)

Focal segmental glomerulosclerosis 1 (1)

Computational scores

Source: dbNSFP v4.9

Name

Calibrated prediction

Score

Prediction

AlphaMissense

Pathogenic

0.99

BayesDel_addAF

Benign

-0.082

BayesDel_noAF

Uncertain

0.12

CADD

Pathogenic

(source)

DANN

Uncertain

1.0

DEOGEN2

Pathogenic

0.96

Eigen

Uncertain

0.61

Eigen_PC

Uncertain

0.54

FATHMM_MKL

Pathogenic

0.98

MetaRNN

Benign

0.022

MetaSVM

Pathogenic

0.83

MutationAssessor

Uncertain

2.6

PhyloP100

7.8

PrimateAI

Pathogenic

0.89

PROVEAN

Pathogenic

-8.8

REVEL

Pathogenic

0.67

Sift

Uncertain

0.0020

Sift4G

Uncertain

0.0050

Polyphen

0.95

Vest4

0.59

MVP

0.91

MPC

2.6

ClinPred

0.12

GERP RS

4.2

RBP_binding_hub_radar

0.0

RBP_regulation_power_radar

1.7

Varity_R

0.86

gMVP

0.88

Mutation Taster

=9/91

disease causing

(source)

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

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Variant summary

Frequency

Consequence

Scores

Clinical Significance

Conservation

Publications

ACMG classification

Variant Effect in Transcripts

RefSeq Transcripts

Ensembl Transcripts

Frequencies

Age Distribution

Age Distribution

ClinVar

Computational scores

Splicing

Publications

Other links and lift over