rs139544273

Positions:

chr17-10639328-G-C

Variant summary

Our verdict is Benign. Variant got -7 ACMG points: 0P and 7B. BP4_StrongBP6BP7BS2_Supporting

The NM_002470.4(MYH3):c.3072C>G(p.Thr1024Thr) variant causes a synonymous change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.000721 in 1,614,076 control chromosomes in the GnomAD database, including 1 homozygotes. In-silico tool predicts a benign outcome for this variant. Variant has been reported in ClinVar as Conflicting classifications of pathogenicity (no stars).

Frequency

Genomes: 𝑓 0.00049 ( 0 hom., cov: 32)

Exomes 𝑓: 0.00074 ( 1 hom. )

Consequence

MYH3
NM_002470.4 synonymous

Scores

Clinical Significance

Conflicting classifications of pathogenicity criteria provided, conflicting classifications U:1B:3

Conservation

PhyloP100: 0.779

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 -7 ACMG points.

BP4

Computational evidence support a benign effect (BayesDel_noAF=-0.49).

BP6

Variant 17-10639328-G-C is Benign according to our data. Variant chr17-10639328-G-C is described in ClinVar as [Conflicting_classifications_of_pathogenicity]. Clinvar id is 258678.We mark this variant Likely_benign, oryginal submissions are: {Likely_benign=2, Uncertain_significance=1, Benign=1}.

BP7

Synonymous conserved (PhyloP=0.779 with no splicing effect.

BS2

High AC in GnomAd4 at 75 AD gene. Variant has AC lower than other variant known as pathogenic in the gene, so the strength is limited to Supporting.

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	MANE	Protein	UniProt
MYH3	NM_002470.4 linkuse as main transcript	c.3072C>G	p.Thr1024Thr	synonymous_variant	24/41	ENST00000583535.6	NP_002461.2	P11055Q5GJ67
MYH3	XM_011523870.4 linkuse as main transcript	c.3072C>G	p.Thr1024Thr	synonymous_variant	24/41		XP_011522172.1	P11055
MYH3	XM_011523871.3 linkuse as main transcript	c.3072C>G	p.Thr1024Thr	synonymous_variant	24/41		XP_011522173.1	P11055
MYH3	XM_047436127.1 linkuse as main transcript	c.3072C>G	p.Thr1024Thr	synonymous_variant	26/43		XP_047292083.1

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	TSL	MANE	Protein	Appris	UniProt
MYH3	ENST00000583535.6 linkuse as main transcript	c.3072C>G	p.Thr1024Thr	synonymous_variant	24/41	5	NM_002470.4	ENSP00000464317.1		P11055

Frequencies

GnomAD3 genomes

AF:

0.000493

AC:

AN:

152076

Hom.:

Cov.:

show subpopulations

Gnomad AFR

AF:

0.000145

Gnomad AMI

AF:

0.00

Gnomad AMR

AF:

0.000458

Gnomad ASJ

AF:

0.00115

Gnomad EAS

AF:

0.00

Gnomad SAS

AF:

0.00

Gnomad FIN

AF:

0.000566

Gnomad MID

AF:

0.00

Gnomad NFE

AF:

0.000750

Gnomad OTH

AF:

0.000478

GnomAD3 exomes

AF:

0.000406

AC:

102

AN:

251438

Hom.:

AF XY:

0.000405

AC XY:

AN XY:

135912

show subpopulations

Gnomad AFR exome

AF:

0.000185

Gnomad AMR exome

AF:

0.0000578

Gnomad ASJ exome

AF:

0.000595

Gnomad EAS exome

AF:

0.00

Gnomad SAS exome

AF:

0.00

Gnomad FIN exome

AF:

0.000601

Gnomad NFE exome

AF:

0.000668

Gnomad OTH exome

AF:

0.000326

GnomAD4 exome

AF:

0.000745

AC:

1089

AN:

1461882

Hom.:

Cov.:

AF XY:

0.000704

AC XY:

512

AN XY:

727244

show subpopulations

Gnomad4 AFR exome

AF:

0.000149

Gnomad4 AMR exome

AF:

0.0000447

Gnomad4 ASJ exome

AF:

0.00153

Gnomad4 EAS exome

AF:

0.00

Gnomad4 SAS exome

AF:

0.00

Gnomad4 FIN exome

AF:

0.00101

Gnomad4 NFE exome

AF:

0.000844

Gnomad4 OTH exome

AF:

0.000828

GnomAD4 genome

AF:

0.000493

AC:

AN:

152194

Hom.:

Cov.:

AF XY:

0.000497

AC XY:

AN XY:

74396

show subpopulations

Gnomad4 AFR

AF:

0.000144

Gnomad4 AMR

AF:

0.000458

Gnomad4 ASJ

AF:

0.00115

Gnomad4 EAS

AF:

0.00

Gnomad4 SAS

AF:

0.00

Gnomad4 FIN

AF:

0.000566

Gnomad4 NFE

AF:

0.000750

Gnomad4 OTH

AF:

0.000473

Alfa

AF:

0.000692

Hom.:

Bravo

AF:

0.000514

EpiCase

AF:

0.000273

EpiControl

AF:

0.000771

ClinVar

Significance: Conflicting classifications of pathogenicity

Submissions summary: Uncertain:1Benign:3

Revision: criteria provided, conflicting classifications

LINK: link

Submissions by phenotype

Distal arthrogryposis type 2B1

Uncertain:1

Uncertain significance, criteria provided, single submitter

clinical testing

Illumina Laboratory Services, Illumina

Jan 12, 2018

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, this variant could not be ruled out of causing disease and therefore its association with disease required further investigation. A literature search was performed for the gene, cDNA change, and amino acid change (if applicable). No publications were found based on this search. This variant was therefore classified as a variant of unknown significance for this disease. -

not specified

Benign:1

Likely benign, criteria provided, single submitter

clinical testing

PreventionGenetics, part of Exact Sciences

- -

Freeman-Sheldon syndrome

Benign:1

Benign, criteria provided, single submitter

clinical testing

Illumina Laboratory Services, Illumina

Jan 12, 2018

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. -

not provided

Benign:1

Likely benign, criteria provided, single submitter

clinical testing

Labcorp Genetics (formerly Invitae), Labcorp

Jan 30, 2024

- -

Computational scores

Source: dbNSFP v4.3

Name

Calibrated prediction

Score

Prediction

BayesDel_noAF

Benign

-0.49

CADD

Benign

9.9

DANN

Benign

0.67

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