rs61735358

Positions:

chr17-10638180-C-T

Variant summary

Our verdict is Benign. Variant got -19 ACMG points: 1P and 20B. PP2BP4_StrongBP6_Very_StrongBS1BS2

The NM_002470.4(MYH3):c.3592G>A(p.Ala1198Thr) variant causes a missense change. The variant allele was found at a frequency of 0.00831 in 1,613,956 control chromosomes in the GnomAD database, including 76 homozygotes. In-silico tool predicts a benign outcome for this variant. Variant has been reported in ClinVar as Likely benign (★★). Another variant affecting the same amino acid position, but resulting in a different missense (i.e. A1198V) has been classified as Uncertain significance.

Frequency

Genomes: 𝑓 0.0062 ( 6 hom., cov: 31)

Exomes 𝑓: 0.0085 ( 70 hom. )

Consequence

MYH3
NM_002470.4 missense

Scores

Clinical Significance

Benign/Likely benign criteria provided, multiple submitters, no conflicts B:13

Conservation

PhyloP100: 4.97

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 -19 ACMG points.

PP2

Missense variant in gene, where missense usually causes diseases (based on misZ statistic), MYH3. . Gene score misZ 1.7445 (greater than the threshold 3.09). Trascript score misZ 4.649 (greater than threshold 3.09). GenCC has associacion of gene with spondylocarpotarsal synostosis syndrome, contractures, pterygia, and variable skeletal fusions syndrome 1B, contractures, pterygia, and spondylocarpotarsal fusion syndrome 1A, digitotalar dysmorphism, autosomal recessive multiple pterygium syndrome, Freeman-Sheldon syndrome, distal arthrogryposis type 2B1, Sheldon-hall syndrome.

BP4

Computational evidence support a benign effect (MetaRNN=0.013158917).

BP6

Variant 17-10638180-C-T is Benign according to our data. Variant chr17-10638180-C-T is described in ClinVar as [Likely_benign]. Clinvar id is 211552.Status of the report is criteria_provided_multiple_submitters_no_conflicts, 2 stars. Variant chr17-10638180-C-T is described in Lovd as [Benign]. Variant chr17-10638180-C-T is described in Lovd as [Likely_benign].

BS1

Variant frequency is greater than expected in population nfe. gnomad4 allele frequency = 0.00625 (950/152072) while in subpopulation NFE AF= 0.0104 (704/68004). AF 95% confidence interval is 0.00972. There are 6 homozygotes in gnomad4. There are 433 alleles in male gnomad4 subpopulation. Median coverage is 31. This position pass quality control queck.

BS2

High AC in GnomAd4 at 950 AD gene.

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	MANE
MYH3	NM_002470.4 linkuse as main transcript	c.3592G>A	p.Ala1198Thr	missense_variant	27/41	ENST00000583535.6
MYH3	XM_011523870.4 linkuse as main transcript	c.3592G>A	p.Ala1198Thr	missense_variant	27/41
MYH3	XM_011523871.3 linkuse as main transcript	c.3592G>A	p.Ala1198Thr	missense_variant	27/41
MYH3	XM_047436127.1 linkuse as main transcript	c.3592G>A	p.Ala1198Thr	missense_variant	29/43

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	TSL	MANE	Appris	UniProt
MYH3	ENST00000583535.6 linkuse as main transcript	c.3592G>A	p.Ala1198Thr	missense_variant	27/41	5	NM_002470.4	P1

Frequencies

GnomAD3 genomes

AF:

0.00625

AC:

950

AN:

151954

Hom.:

Cov.:

show subpopulations

Gnomad AFR

AF:

0.00164

Gnomad AMI

AF:

0.00

Gnomad AMR

AF:

0.00617

Gnomad ASJ

AF:

0.00144

Gnomad EAS

AF:

0.00

Gnomad SAS

AF:

0.00125

Gnomad FIN

AF:

0.00530

Gnomad MID

AF:

0.0190

Gnomad NFE

AF:

0.0104

Gnomad OTH

AF:

0.00526

GnomAD3 exomes

AF:

0.00637

AC:

1603

AN:

251480

Hom.:

AF XY:

0.00627

AC XY:

852

AN XY:

135914

show subpopulations

Gnomad AFR exome

AF:

0.00148

Gnomad AMR exome

AF:

0.00312

Gnomad ASJ exome

AF:

0.000694

Gnomad EAS exome

AF:

0.00

Gnomad SAS exome

AF:

0.00134

Gnomad FIN exome

AF:

0.00702

Gnomad NFE exome

AF:

0.0108

Gnomad OTH exome

AF:

0.00635

GnomAD4 exome

AF:

0.00852

AC:

12460

AN:

1461884

Hom.:

Cov.:

AF XY:

0.00820

AC XY:

5965

AN XY:

727246

show subpopulations

Gnomad4 AFR exome

AF:

0.00152

Gnomad4 AMR exome

AF:

0.00318

Gnomad4 ASJ exome

AF:

0.000459

Gnomad4 EAS exome

AF:

0.00

Gnomad4 SAS exome

AF:

0.00151

Gnomad4 FIN exome

AF:

0.00749

Gnomad4 NFE exome

AF:

0.0101

Gnomad4 OTH exome

AF:

0.00742

GnomAD4 genome

AF:

0.00625

AC:

950

AN:

152072

Hom.:

Cov.:

AF XY:

0.00583

AC XY:

433

AN XY:

74324

show subpopulations

Gnomad4 AFR

AF:

0.00164

Gnomad4 AMR

AF:

0.00616

Gnomad4 ASJ

AF:

0.00144

Gnomad4 EAS

AF:

0.00

Gnomad4 SAS

AF:

0.00125

Gnomad4 FIN

AF:

0.00530

Gnomad4 NFE

AF:

0.0104

Gnomad4 OTH

AF:

0.00521

Alfa

AF:

0.00932

Hom.:

Bravo

AF:

0.00593

TwinsUK

AF:

0.00971

AC:

ALSPAC

AF:

0.00960

AC:

ESP6500AA

AF:

0.00250

AC:

ESP6500EA

AF:

0.0105

AC:

ExAC

AF:

0.00676

AC:

821

Asia WGS

AF:

0.00115

AC:

AN:

3478

EpiCase

AF:

0.00987

EpiControl

AF:

0.0105

ClinVar

Significance: Benign/Likely benign

Submissions summary: Benign:13

Revision: criteria provided, multiple submitters, no conflicts

LINK: link

Submissions by phenotype

not provided

Benign:7

Likely benign, criteria provided, single submitter	not provided	Breakthrough Genomics, Breakthrough Genomics	-	- -
Benign, criteria provided, single submitter	clinical testing	Labcorp Genetics (formerly Invitae), Labcorp	Jan 30, 2024	- -
Likely benign, no assertion criteria provided	clinical testing	Genome Diagnostics Laboratory, University Medical Center Utrecht	-	- -
Benign, criteria provided, single submitter	clinical testing	Center for Pediatric Genomic Medicine, Children's Mercy Hospital and Clinics	Dec 23, 2015	- -
Likely benign, criteria provided, single submitter	clinical testing	GeneDx	Apr 27, 2021	- -
Benign, criteria provided, single submitter	clinical testing	CeGaT Center for Human Genetics Tuebingen	Aug 01, 2024	MYH3: BS1, BS2 -
Likely benign, no assertion criteria provided	clinical testing	Laboratory of Diagnostic Genome Analysis, Leiden University Medical Center (LUMC)	-	- -

not specified

Benign:4

Likely benign, criteria provided, single submitter	clinical testing	Genetic Services Laboratory, University of Chicago	Aug 04, 2015	- -
Benign, criteria provided, single submitter	clinical testing	PreventionGenetics, part of Exact Sciences	-	- -
Benign, no assertion criteria provided	clinical testing	Clinical Genetics, Academic Medical Center	-	- -
Benign, no assertion criteria provided	clinical testing	Clinical Genetics DNA and cytogenetics Diagnostics Lab, Erasmus MC, Erasmus Medical Center	-	- -

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. -

Distal arthrogryposis type 2B1

Benign:1

Benign, criteria provided, single submitter

clinical testing

Illumina Laboratory Services, Illumina

Jan 12, 2018

Computational scores

Source: dbNSFP v4.3

Name

Calibrated prediction

Score

Prediction

AlphaMissense

Benign

0.090

BayesDel_addAF

Benign

-0.31

BayesDel_noAF

Benign

-0.21

CADD

Benign

DANN

Uncertain

1.0

DEOGEN2

Uncertain

0.60

Eigen

Benign

0.052

Eigen_PC

Benign

0.099

FATHMM_MKL

Uncertain

0.97

LIST_S2

Benign

0.78

MetaRNN

Benign

0.013

MetaSVM

Uncertain

-0.23

MutationAssessor

Uncertain

2.3

MutationTaster

Benign

1.0

D;D

PrimateAI

Uncertain

0.50

Sift4G

Benign

0.31

Polyphen

0.089

Vest4

0.19

MVP

0.68

MPC

0.39

ClinPred

0.026

GERP RS

5.5

Varity_R

0.11

gMVP

0.19

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