9-110687135-C-T

Position:

chr9-110687135-C-T

Variant summary

Our verdict is Benign. Variant got -21 ACMG points: 0P and 21B. BP4_StrongBP6_Very_StrongBP7BA1

The NM_005592.4(MUSK):c.225C>T(p.Tyr75=) variant causes a synonymous change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.00396 in 1,613,314 control chromosomes in the GnomAD database, including 256 homozygotes. In-silico tool predicts a benign outcome for this variant. Variant has been reported in ClinVar as Likely benign (★★).

Frequency

Genomes: 𝑓 0.021 ( 132 hom., cov: 31)

Exomes 𝑓: 0.0022 ( 124 hom. )

Consequence

MUSK
NM_005592.4 synonymous

Scores

Clinical Significance

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

Conservation

PhyloP100: 2.28

Variant links:

Genes affected

MUSK (HGNC:7525): (muscle associated receptor tyrosine kinase) This gene encodes a muscle-specific tyrosine kinase receptor. The encoded protein may play a role in clustering of the acetylcholine receptor in the postsynaptic neuromuscular junction. Mutations in this gene have been associated with congenital myasthenic syndrome. Alternatively spliced transcript variants have been described.[provided by RefSeq, Oct 2009]

MUSK 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=-0.47).

BP6

Variant 9-110687135-C-T is Benign according to our data. Variant chr9-110687135-C-T is described in ClinVar as [Likely_benign]. Clinvar id is 129632.Status of the report is criteria_provided_multiple_submitters_no_conflicts, 2 stars. Variant chr9-110687135-C-T is described in Lovd as [Benign].

BP7

Synonymous conserved (PhyloP=2.28 with no splicing effect.

BA1

GnomAd4 highest subpopulation (AFR) allele frequency at 95% confidence interval = 0.0723 is higher than 0.05.

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	MANE	Protein	UniProt
MUSK	NM_005592.4 linkuse as main transcript	c.225C>T	p.Tyr75=	synonymous_variant	3/15	ENST00000374448.9	NP_005583.1

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	TSL	MANE	Protein	Appris	UniProt
MUSK	ENST00000374448.9 linkuse as main transcript	c.225C>T	p.Tyr75=	synonymous_variant	3/15	5	NM_005592.4	ENSP00000363571	P4	O15146-1
MUSK	ENST00000416899.7 linkuse as main transcript	c.225C>T	p.Tyr75=	synonymous_variant	3/14	5		ENSP00000393608	A1
MUSK	ENST00000189978.10 linkuse as main transcript	c.225C>T	p.Tyr75=	synonymous_variant	3/14	5		ENSP00000189978		O15146-2

Frequencies

GnomAD3 genomes

AF:

0.0211

AC:

3207

AN:

151952

Hom.:

130

Cov.:

show subpopulations

Gnomad AFR

AF:

0.0744

Gnomad AMI

AF:

0.00

Gnomad AMR

AF:

0.00590

Gnomad ASJ

AF:

0.00

Gnomad EAS

AF:

0.00

Gnomad SAS

AF:

0.000415

Gnomad FIN

AF:

0.00

Gnomad MID

AF:

0.00

Gnomad NFE

AF:

0.000132

Gnomad OTH

AF:

0.0148

GnomAD3 exomes

AF:

0.00524

AC:

1303

AN:

248758

Hom.:

AF XY:

0.00385

AC XY:

519

AN XY:

134902

show subpopulations

Gnomad AFR exome

AF:

0.0763

Gnomad AMR exome

AF:

0.00276

Gnomad ASJ exome

AF:

0.00

Gnomad EAS exome

AF:

0.00

Gnomad SAS exome

AF:

0.000163

Gnomad FIN exome

AF:

0.00

Gnomad NFE exome

AF:

0.0000266

Gnomad OTH exome

AF:

0.00315

GnomAD4 exome

AF:

0.00217

AC:

3167

AN:

1461242

Hom.:

124

Cov.:

AF XY:

0.00186

AC XY:

1349

AN XY:

726898

show subpopulations

Gnomad4 AFR exome

AF:

0.0784

Gnomad4 AMR exome

AF:

0.00367

Gnomad4 ASJ exome

AF:

0.00

Gnomad4 EAS exome

AF:

0.00

Gnomad4 SAS exome

AF:

0.000244

Gnomad4 FIN exome

AF:

0.00

Gnomad4 NFE exome

AF:

0.0000351

Gnomad4 OTH exome

AF:

0.00499

GnomAD4 genome

AF:

0.0212

AC:

3219

AN:

152072

Hom.:

132

Cov.:

AF XY:

0.0202

AC XY:

1505

AN XY:

74372

show subpopulations

Gnomad4 AFR

AF:

0.0745

Gnomad4 AMR

AF:

0.00589

Gnomad4 ASJ

AF:

0.00

Gnomad4 EAS

AF:

0.00

Gnomad4 SAS

AF:

0.000208

Gnomad4 FIN

AF:

0.00

Gnomad4 NFE

AF:

0.000132

Gnomad4 OTH

AF:

0.0147

Alfa

AF:

0.00973

Hom.:

Bravo

AF:

0.0246

Asia WGS

AF:

0.00491

AC:

AN:

3478

EpiCase

AF:

0.00

EpiControl

AF:

0.000119

ClinVar

Significance: Benign/Likely benign

Submissions summary: Benign:7

Revision: criteria provided, multiple submitters, no conflicts

LINK: link

Submissions by phenotype

not specified

Benign:4

Likely benign, no assertion criteria provided	clinical testing	Genetic Services Laboratory, University of Chicago	-	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. -
Likely benign, criteria provided, single submitter	clinical testing	PreventionGenetics, part of Exact Sciences	-	- -
Benign, criteria provided, single submitter	clinical testing	Athena Diagnostics	Aug 19, 2020	- -
Benign, criteria provided, single submitter	clinical testing	GeneDx	Aug 30, 2017	This variant is considered likely benign or benign based on one or more of the following criteria: it is a conservative change, it occurs at a poorly conserved position in the protein, it is predicted to be benign by multiple in silico algorithms, and/or has population frequency not consistent with disease. -

not provided

Benign:1

Likely benign, criteria provided, single submitter

not provided

Breakthrough Genomics, Breakthrough Genomics

- -

Fetal akinesia deformation sequence 1;C4225368:Congenital myasthenic syndrome 9

Benign:1

Benign, criteria provided, single submitter

clinical testing

Labcorp Genetics (formerly Invitae), Labcorp

Jan 31, 2024

- -

Congenital myasthenic syndrome 9

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. -

Computational scores

Source: dbNSFP v4.3

Name

Calibrated prediction

Score

Prediction

BayesDel_noAF

Benign

-0.47

CADD

Benign

9.2

DANN

Benign

0.55

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