rs16943604

Variant names:

Variant summary

Our verdict is Benign. Variant got -21 ACMG points: 0P and 21B. BP4_StrongBP6_Very_StrongBP7BS1BS2

The NM_002470.4(MYH3):c.699C>T(p.Asn233Asn) variant causes a synonymous change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.00647 in 1,613,636 control chromosomes in the GnomAD database, including 84 homozygotes. In-silico tool predicts a benign outcome for this variant. Variant has been reported in ClinVar as Likely benign (★★).

Frequency

Genomes: 𝑓 0.012 ( 29 hom., cov: 32)

Exomes 𝑓: 0.0059 ( 55 hom. )

Consequence

MYH3
NM_002470.4 synonymous

Scores

Clinical Significance

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

Conservation

PhyloP100: -0.589

Variant links:

Genes affected

MYH3 (HGNC:7573): (myosin heavy chain 3) Myosin is a major contractile protein which converts chemical energy into mechanical energy through the hydrolysis of ATP. Myosin is a hexameric protein composed of a pair of myosin heavy chains (MYH) and two pairs of nonidentical light chains. This gene is a member of the MYH family and encodes a protein with an IQ domain and a myosin head-like domain. Mutations in this gene have been associated with two congenital contracture (arthrogryposis) syndromes, Freeman-Sheldon syndrome and Sheldon-Hall syndrome. [provided by RefSeq, Jul 2008]

MYH3 links:

Genome browser will be placed here

ACMG classification

Classification made for transcript

Verdict is Benign. Variant got -21 ACMG points.

BP4

Computational evidence support a benign effect (BayesDel_noAF=-0.75).

BP6

Variant 17-10648593-G-A is Benign according to our data. Variant chr17-10648593-G-A is described in ClinVar as [Likely_benign]. Clinvar id is 129666.Status of the report is criteria_provided_multiple_submitters_no_conflicts, 2 stars.

BP7

Synonymous conserved (PhyloP=-0.589 with no splicing effect.

BS1

Variant frequency is greater than expected in population afr. gnomad4 allele frequency = 0.0123 (1868/152236) while in subpopulation AFR AF= 0.0298 (1237/41538). AF 95% confidence interval is 0.0284. There are 29 homozygotes in gnomad4. There are 912 alleles in male gnomad4 subpopulation. Median coverage is 32. This position pass quality control queck.

BS2

High AC in GnomAd4 at 1868 AD gene.

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	MANE	Protein	UniProt
MYH3	NM_002470.4 link	c.699C>T	p.Asn233Asn	synonymous_variant	Exon 8 of 41	ENST00000583535.6	NP_002461.2	P11055Q5GJ67
MYH3	XM_011523870.4 link	c.699C>T	p.Asn233Asn	synonymous_variant	Exon 8 of 41		XP_011522172.1	P11055
MYH3	XM_011523871.3 link	c.699C>T	p.Asn233Asn	synonymous_variant	Exon 8 of 41		XP_011522173.1	P11055
MYH3	XM_047436127.1 link	c.699C>T	p.Asn233Asn	synonymous_variant	Exon 10 of 43		XP_047292083.1

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	TSL	MANE	Protein	Appris	UniProt
MYH3	ENST00000583535.6 link	c.699C>T	p.Asn233Asn	synonymous_variant	Exon 8 of 41	5	NM_002470.4	ENSP00000464317.1		P11055
MYH3	ENST00000579489.2 link	n.*42C>T		downstream_gene_variant		5

Frequencies

GnomAD3 genomes

AF:

0.0122

AC:

1853

AN:

152118

Hom.:

Cov.:

show subpopulations

Gnomad AFR

AF:

0.0295

Gnomad AMI

AF:

0.00

Gnomad AMR

AF:

0.00910

Gnomad ASJ

AF:

0.0138

Gnomad EAS

AF:

0.00

Gnomad SAS

AF:

0.00829

Gnomad FIN

AF:

0.000848

Gnomad MID

AF:

0.0285

Gnomad NFE

AF:

0.00535

Gnomad OTH

AF:

0.0110

GnomAD3 exomes

AF:

0.00724

AC:

1821

AN:

251490

Hom.:

AF XY:

0.00741

AC XY:

1007

AN XY:

135918

show subpopulations

Gnomad AFR exome

AF:

0.0297

Gnomad AMR exome

AF:

0.00526

Gnomad ASJ exome

AF:

0.0171

Gnomad EAS exome

AF:

0.00

Gnomad SAS exome

AF:

0.00813

Gnomad FIN exome

AF:

0.00125

Gnomad NFE exome

AF:

0.00585

Gnomad OTH exome

AF:

0.00701

GnomAD4 exome

AF:

0.00587

AC:

8576

AN:

1461400

Hom.:

Cov.:

AF XY:

0.00594

AC XY:

4320

AN XY:

727022

show subpopulations

Gnomad4 AFR exome

AF:

0.0286

Gnomad4 AMR exome

AF:

0.00597

Gnomad4 ASJ exome

AF:

0.0176

Gnomad4 EAS exome

AF:

0.0000504

Gnomad4 SAS exome

AF:

0.00869

Gnomad4 FIN exome

AF:

0.00131

Gnomad4 NFE exome

AF:

0.00495

Gnomad4 OTH exome

AF:

0.00762

GnomAD4 genome

AF:

0.0123

AC:

1868

AN:

152236

Hom.:

Cov.:

AF XY:

0.0123

AC XY:

912

AN XY:

74426

show subpopulations

Gnomad4 AFR

AF:

0.0298

Gnomad4 AMR

AF:

0.00909

Gnomad4 ASJ

AF:

0.0138

Gnomad4 EAS

AF:

0.00

Gnomad4 SAS

AF:

0.00809

Gnomad4 FIN

AF:

0.000848

Gnomad4 NFE

AF:

0.00537

Gnomad4 OTH

AF:

0.0104

Alfa

AF:

0.0100

Hom.:

Bravo

AF:

0.0141

Asia WGS

AF:

0.00837

AC:

AN:

3478

EpiCase

AF:

0.00709

EpiControl

AF:

0.00646

ClinVar

Significance: Benign/Likely benign

Submissions summary: Benign:7

Revision: criteria provided, multiple submitters, no conflicts

LINK: link

Submissions by phenotype

not provided

Benign:3

Breakthrough Genomics, Breakthrough Genomics

Significance: Likely benign

Review Status: criteria provided, single submitter

Collection Method: not provided

- -

Feb 03, 2025

Labcorp Genetics (formerly Invitae), Labcorp

Significance: Benign

Review Status: criteria provided, single submitter

Collection Method: clinical testing

- -

Jul 26, 2021

GeneDx

Significance: Likely benign

Review Status: criteria provided, single submitter

Collection Method: clinical testing

- -

not specified

Benign:2

PreventionGenetics, part of Exact Sciences

Significance: Benign

Review Status: criteria provided, single submitter

Collection Method: clinical testing

- -

Genetic Services Laboratory, University of Chicago

Significance: Likely benign

Review Status: no assertion criteria provided

Collection Method: clinical testing

Likely benign based on allele frequency in 1000 Genomes Project or ESP global frequency and its presence in a patient with a rare or unrelated disease phenotype. NOT Sanger confirmed. -

Freeman-Sheldon syndrome

Benign:1

Jan 12, 2018

Illumina Laboratory Services, Illumina

Significance: Benign

Review Status: criteria provided, single submitter

Collection Method: clinical testing

This variant was observed in the ICSL laboratory as part of a predisposition screen in an ostensibly healthy population. It had not been previously curated by ICSL or reported in the Human Gene Mutation Database (HGMD: prior to June 1st, 2018), and was therefore a candidate for classification through an automated scoring system. Utilizing variant allele frequency, disease prevalence and penetrance estimates, and inheritance mode, an automated score was calculated to assess if this variant is too frequent to cause the disease. Based on the score and internal cut-off values, a variant classified as benign is not then subjected to further curation. The score for this variant resulted in a classification of benign for this disease. -

Distal arthrogryposis type 2B1

Benign:1

Jan 12, 2018

Illumina Laboratory Services, Illumina

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

-0.75

CADD

Benign

1.0

DANN

Benign

0.71

RBP_binding_hub_radar

0.0

RBP_regulation_power_radar

1.7

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.

Variant summary

Frequency

Consequence

Scores

Clinical Significance

Conservation

ACMG classification

Transcripts

RefSeq

Ensembl

Frequencies

ClinVar

Submissions by phenotype

Computational scores

Splicing

Publications

LitVar

Other links and lift over