NM_002472.3:c.4379A>G

Variant names:

Variant summary

Our verdict is Benign. The variant received -20 ACMG points: 0P and 20B. BP4_StrongBP6_Very_StrongBS1BS2

The NM_002472.3(MYH8):c.4379A>G(p.Lys1460Arg) variant causes a missense change. The variant allele was found at a frequency of 0.00106 in 1,614,190 control chromosomes in the GnomAD database, including 17 homozygotes. In-silico tool predicts a benign outcome for this variant. 14/21 in silico tools predict a benign outcome for this variant. Variant has been reported in ClinVar as Benign (★★).

Frequency

Genomes: 𝑓 0.0057 ( 7 hom., cov: 32)

Exomes 𝑓: 0.00057 ( 10 hom. )

Consequence

MYH8
NM_002472.3 missense

Scores

Clinical Significance

Benign criteria provided, multiple submitters, no conflicts B:3

Conservation

PhyloP100: 4.13

Publications

4 publications found

Variant links:

Genes affected

MYH8 (HGNC:7578): (myosin heavy chain 8) Myosins are actin-based motor proteins that function in the generation of mechanical force in eukaryotic cells. Muscle myosins are heterohexamers composed of 2 myosin heavy chains and 2 pairs of nonidentical myosin light chains. This gene encodes a member of the class II or conventional myosin heavy chains, and functions in skeletal muscle contraction. This gene is predominantly expressed in fetal skeletal muscle. This gene is found in a cluster of myosin heavy chain genes on chromosome 17. A mutation in this gene results in trismus-pseudocamptodactyly syndrome. [provided by RefSeq, Sep 2009]

MYH8 links:

MYHAS (HGNC:50609): (myosin heavy chain gene cluster antisense RNA) Predicted to enable primary miRNA binding activity. Predicted to be involved in response to muscle activity and skeletal muscle fiber development. Predicted to act upstream of or within with a positive effect on gene expression. Predicted to be located in cytoplasm and nucleus. [provided by Alliance of Genome Resources, Apr 2022]

MYHAS links:

Genome browser will be placed here

ACMG classification

Classification was made for transcript

Our verdict: Benign. The variant received -20 ACMG points.

BP4

Computational evidence support a benign effect (MetaRNN=0.0069132745).

BP6

Variant 17-10396702-T-C is Benign according to our data. Variant chr17-10396702-T-C is described in ClinVar as Benign. ClinVar VariationId is 258720.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 = 0.0057 (868/152304) while in subpopulation AFR AF = 0.02 (832/41554). AF 95% confidence interval is 0.0189. There are 7 homozygotes in GnomAd4. There are 395 alleles in the male GnomAd4 subpopulation. Median coverage is 32. This position passed quality control check.

BS2

High AC in GnomAd4 at 868 AD gene.

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	MANE	Protein	UniProt
MYH8	NM_002472.3 link	c.4379A>G	p.Lys1460Arg	missense_variant	Exon 32 of 40	ENST00000403437.2	NP_002463.2	P13535
MYHAS	NR_125367.1 link	n.77-9446T>C		intron_variant	Intron 1 of 10

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	TSL	MANE	Protein	Appris	UniProt
MYH8	ENST00000403437.2 link	c.4379A>G	p.Lys1460Arg	missense_variant	Exon 32 of 40	5	NM_002472.3	ENSP00000384330.2		P13535

Frequencies

GnomAD3 genomes

AF:

0.00564

AC:

859

AN:

152186

Hom.:

Cov.:

show subpopulations

Gnomad AFR

AF:

0.0198

Gnomad AMI

AF:

0.00

Gnomad AMR

AF:

0.00144

Gnomad ASJ

AF:

0.00

Gnomad EAS

AF:

0.00

Gnomad SAS

AF:

0.000827

Gnomad FIN

AF:

0.00

Gnomad MID

AF:

0.00

Gnomad NFE

AF:

0.0000588

Gnomad OTH

AF:

0.00335

GnomAD2 exomes

AF:

0.00154

AC:

386

AN:

251442

AF XY:

0.00112

show subpopulations

Gnomad AFR exome

AF:

0.0218

Gnomad AMR exome

AF:

0.000694

Gnomad ASJ exome

AF:

0.00

Gnomad EAS exome

AF:

0.00

Gnomad FIN exome

AF:

0.00

Gnomad NFE exome

AF:

0.0000176

Gnomad OTH exome

AF:

0.000652

GnomAD4 exome

AF:

0.000575

AC:

840

AN:

1461886

Hom.:

Cov.:

AF XY:

0.000516

AC XY:

375

AN XY:

727246

show subpopulations

African (AFR)

AF:

0.0207

AC:

694

AN:

33480

American (AMR)

AF:

0.000961

AC:

AN:

44724

Ashkenazi Jewish (ASJ)

AF:

0.00

AC:

AN:

26136

East Asian (EAS)

AF:

0.00

AC:

AN:

39700

South Asian (SAS)

AF:

0.0000464

AC:

AN:

86258

European-Finnish (FIN)

AF:

0.00

AC:

AN:

53412

Middle Eastern (MID)

AF:

0.00104

AC:

AN:

5768

European-Non Finnish (NFE)

AF:

0.00000629

AC:

AN:

1112012

Other (OTH)

AF:

0.00142

AC:

AN:

60396

Allele Balance Distribution

Red line indicates average allele balance

Average allele balance: 0.477

Heterozygous variant carriers

118

178

237

296

0.00

0.20

0.40

0.60

0.80

0.95

Allele balance

Age Distribution

Exome Het

Exome Hom

Variant carriers

110

<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:

0.00570

AC:

868

AN:

152304

Hom.:

Cov.:

AF XY:

0.00530

AC XY:

395

AN XY:

74470

show subpopulations

African (AFR)

AF:

0.0200

AC:

832

AN:

41554

American (AMR)

AF:

0.00144

AC:

AN:

15306

Ashkenazi Jewish (ASJ)

AF:

0.00

AC:

AN:

3470

East Asian (EAS)

AF:

0.00

AC:

AN:

5178

South Asian (SAS)

AF:

0.000621

AC:

AN:

4830

European-Finnish (FIN)

AF:

0.00

AC:

AN:

10618

Middle Eastern (MID)

AF:

0.00

AC:

AN:

294

European-Non Finnish (NFE)

AF:

0.0000588

AC:

AN:

68032

Other (OTH)

AF:

0.00332

AC:

AN:

2110

Allele Balance Distribution

Red line indicates average allele balance

Average allele balance: 0.509

Heterozygous variant carriers

116

154

193

0.00

0.20

0.40

0.60

0.80

0.95

Allele balance

Age Distribution

Genome Het

Genome Hom

Variant carriers

100

<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:

0.00136

Hom.:

Bravo

AF:

0.00688

ESP6500AA

AF:

0.0232

AC:

102

ESP6500EA

AF:

0.00

AC:

ExAC

AF:

0.00199

AC:

242

Asia WGS

AF:

0.00260

AC:

AN:

3478

EpiCase

AF:

0.0000545

EpiControl

AF:

0.00

ClinVar

Significance: Benign

Submissions summary: Benign:3

Revision: criteria provided, multiple submitters, no conflicts

LINK: link

Submissions by phenotype

not provided

Benign:2

Dec 31, 2019

Labcorp Genetics (formerly Invitae), Labcorp

Significance:Benign

Review Status:criteria provided, single submitter

Collection Method:clinical testing

- -

Breakthrough Genomics, Breakthrough Genomics

Significance:Benign

Review Status:criteria provided, single submitter

Collection Method:not provided

- -

not specified

Benign:1

PreventionGenetics, part of Exact Sciences

Significance:Benign

Review Status:criteria provided, single submitter

Collection Method:clinical testing

- -

Computational scores

Source: dbNSFP v4.3

Name

Calibrated prediction

Score

Prediction

AlphaMissense

Benign

0.092

BayesDel_addAF

Benign

-0.52

BayesDel_noAF

Benign

-0.50

CADD

Benign

(source)

DANN

Uncertain

0.98

DEOGEN2

Benign

0.27

Eigen

Benign

-0.49

Eigen_PC

Benign

-0.41

FATHMM_MKL

Uncertain

0.90

LIST_S2

Benign

0.82

MetaRNN

Benign

0.0069

MetaSVM

Benign

-0.69

MutationAssessor

Benign

1.9

PhyloP100

4.1

PrimateAI

Benign

0.47

PROVEAN

Benign

-1.4

REVEL

Benign

0.27

Sift

Benign

0.14

Sift4G

Benign

0.20

Polyphen

0.020

Vest4

0.061

MVP

0.65

MPC

0.20

ClinPred

0.018

GERP RS

1.4

Varity_R

0.052

gMVP

0.21

Mutation Taster

=97/3

polymorphism

(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

Transcripts

RefSeq

Ensembl

Frequencies

Age Distribution

Age Distribution

ClinVar

Submissions by phenotype

Computational scores

Splicing

Publications

Other links and lift over