rs777107917

Positions:

chr9-110784830-C-T

Variant summary

Our verdict is Uncertain significance. Variant got 0 ACMG points: 2P and 2B. PM2BP4_Moderate

The NM_005592.4(MUSK):c.1400C>T(p.Thr467Met) variant causes a missense change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.00000993 in 1,610,632 control chromosomes in the GnomAD database, with no homozygous occurrence. In-silico tool predicts a benign outcome for this variant. 16/21 in silico tools predict a benign outcome for this variant. Variant has been reported in ClinVar as Uncertain significance (★). Synonymous variant affecting the same amino acid position (i.e. T467T) has been classified as Likely benign.

Frequency

Genomes: 𝑓 0.000020 ( 0 hom., cov: 33)

Exomes 𝑓: 0.0000089 ( 0 hom. )

Consequence

MUSK
NM_005592.4 missense

Scores

Clinical Significance

Uncertain significance criteria provided, single submitter U:1

Conservation

PhyloP100: 1.66

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:

LOC107987115 (HGNC:):

LOC107987115 links:

Genome browser will be placed here

ACMG classification

Classification made for transcript

Verdict is Uncertain_significance. Variant got 0 ACMG points.

PM2

Very rare variant in population databases, with high coverage;

BP4

Computational evidence support a benign effect (MetaRNN=0.094355494).

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	MANE	UniProt
MUSK	NM_005592.4 linkuse as main transcript	c.1400C>T	p.Thr467Met	missense_variant	12/15	ENST00000374448.9
LOC107987115	XR_001746892.2 linkuse as main transcript	n.240G>A		non_coding_transcript_exon_variant	2/3

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	TSL	MANE	Appris	UniProt
MUSK	ENST00000374448.9 linkuse as main transcript	c.1400C>T	p.Thr467Met	missense_variant	12/15	5	NM_005592.4	P4	O15146-1
MUSK	ENST00000416899.7 linkuse as main transcript	c.1376C>T	p.Thr459Met	missense_variant	11/14	5		A1
MUSK	ENST00000189978.10 linkuse as main transcript	c.1142C>T	p.Thr381Met	missense_variant	11/14	5			O15146-2
MUSK	ENST00000374438.1 linkuse as main transcript	n.618-697C>T		intron_variant, non_coding_transcript_variant		3

Frequencies

GnomAD3 genomes

AF:

0.0000197

AC:

AN:

152190

Hom.:

Cov.:

show subpopulations

Gnomad AFR

AF:

0.00

Gnomad AMI

AF:

0.00

Gnomad AMR

AF:

0.00

Gnomad ASJ

AF:

0.00

Gnomad EAS

AF:

0.000192

Gnomad SAS

AF:

0.00

Gnomad FIN

AF:

0.00

Gnomad MID

AF:

0.00

Gnomad NFE

AF:

0.0000294

Gnomad OTH

AF:

0.00

GnomAD3 exomes

AF:

0.0000121

AC:

AN:

247514

Hom.:

AF XY:

0.0000149

AC XY:

AN XY:

134160

show subpopulations

Gnomad AFR exome

AF:

0.0000647

Gnomad AMR exome

AF:

0.00

Gnomad ASJ exome

AF:

0.00

Gnomad EAS exome

AF:

0.00

Gnomad SAS exome

AF:

0.00

Gnomad FIN exome

AF:

0.00

Gnomad NFE exome

AF:

0.0000178

Gnomad OTH exome

AF:

0.00

GnomAD4 exome

AF:

0.00000891

AC:

AN:

1458442

Hom.:

Cov.:

AF XY:

0.0000124

AC XY:

AN XY:

725192

show subpopulations

Gnomad4 AFR exome

AF:

0.0000598

Gnomad4 AMR exome

AF:

0.0000224

Gnomad4 ASJ exome

AF:

0.00

Gnomad4 EAS exome

AF:

0.00

Gnomad4 SAS exome

AF:

0.0000117

Gnomad4 FIN exome

AF:

0.00

Gnomad4 NFE exome

AF:

0.00000811

Gnomad4 OTH exome

AF:

0.00

GnomAD4 genome

AF:

0.0000197

AC:

AN:

152190

Hom.:

Cov.:

AF XY:

0.0000134

AC XY:

AN XY:

74350

show subpopulations

Gnomad4 AFR

AF:

0.00

Gnomad4 AMR

AF:

0.00

Gnomad4 ASJ

AF:

0.00

Gnomad4 EAS

AF:

0.000192

Gnomad4 SAS

AF:

0.00

Gnomad4 FIN

AF:

0.00

Gnomad4 NFE

AF:

0.0000294

Gnomad4 OTH

AF:

0.00

Alfa

AF:

0.0000422

Hom.:

Bravo

AF:

0.00000756

ExAC

AF:

0.0000165

AC:

ClinVar

Significance: Uncertain significance

Submissions summary: Uncertain:1

Revision: criteria provided, single submitter

LINK: link

Submissions by phenotype

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

Uncertain:1

Uncertain significance, criteria provided, single submitter

clinical testing

Invitae

Aug 20, 2021

This sequence change replaces threonine with methionine at codon 467 of the MUSK protein (p.Thr467Met). The threonine residue is moderately conserved and there is a moderate physicochemical difference between threonine and methionine. This variant is present in population databases (rs777107917, ExAC 0.01%). This variant has not been reported in the literature in individuals affected with MUSK-related conditions. Algorithms developed to predict the effect of missense changes on protein structure and function are either unavailable or do not agree on the potential impact of this missense change (SIFT: "Deleterious"; PolyPhen-2: "Benign"; Align-GVGD: "Class C0"). In summary, the available evidence is currently insufficient to determine the role of this variant in disease. Therefore, it has been classified as a Variant of Uncertain Significance. -

Computational scores

Source: dbNSFP v4.3

Name

Calibrated prediction

Score

Prediction

AlphaMissense

Benign

0.22

BayesDel_addAF

Benign

-0.24

BayesDel_noAF

Benign

-0.39

CADD

Benign

DANN

Benign

0.97

DEOGEN2

Benign

0.21

T;.;.;.

Eigen

Benign

-0.57

Eigen_PC

Benign

-0.55

FATHMM_MKL

Benign

0.39

LIST_S2

Benign

0.80

T;T;T;T

M_CAP

Benign

0.052

MetaRNN

Benign

0.094

T;T;T;T

MetaSVM

Benign

-0.96

MutationAssessor

Benign

1.0

L;.;.;.

MutationTaster

Benign

1.0

N;N;N;N

PrimateAI

Benign

0.38

PROVEAN

Benign

-1.1

N;.;.;.

REVEL

Benign

0.15

Sift

Uncertain

0.0050

D;.;.;.

Sift4G

Benign

0.12

T;T;T;T

Polyphen

0.63

P;.;.;.

Vest4

0.23

MutPred

0.15

Loss of glycosylation at T467 (P = 0.0692);.;.;.;

MVP

0.68

MPC

0.17

ClinPred

0.26

GERP RS

3.9

Varity_R

0.033

gMVP

0.40

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