rs114362384

Variant names:

Variant summary

Our verdict is Benign. The variant received -9 ACMG points: 0P and 9B. BP4_StrongBP6BS1

The NM_005592.4(MUSK):c.1779-7C>T variant causes a splice region, intron change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.000118 in 1,610,742 control chromosomes in the GnomAD database, with no homozygous occurrence. In-silico tool predicts a benign outcome for this variant. 3/3 splice prediction tools predict no significant impact on normal splicing. Variant has been reported in ClinVar as Conflicting classifications of pathogenicity (no stars).

Frequency

Genomes: 𝑓 0.00068 ( 0 hom., cov: 31)

Exomes 𝑓: 0.000060 ( 0 hom. )

Consequence

MUSK
NM_005592.4 splice_region, intron

Scores

Splicing: ADA: 0.0003415

Clinical Significance

Conflicting classifications of pathogenicity criteria provided, conflicting classifications U:1B:2

Conservation

PhyloP100: 0.385

Publications

0 publications found

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 Gene-Disease associations (from GenCC):

congenital myasthenic syndrome 9
Inheritance: AR Classification: STRONG Submitted by: Genomics England PanelApp, Labcorp Genetics (formerly Invitae), PanelApp Australia
fetal akinesia deformation sequence 1
Inheritance: AR Classification: STRONG, SUPPORTIVE Submitted by: Orphanet, Labcorp Genetics (formerly Invitae)
postsynaptic congenital myasthenic syndrome
Inheritance: AR Classification: SUPPORTIVE Submitted by: Orphanet

MUSK links:

Genome browser will be placed here

ACMG classification

Classification was made for transcript

Our verdict: Benign. The variant received -9 ACMG points.

BP4

Computational evidence support a benign effect (BayesDel_noAF=-0.71).

BP6

Variant 9-110787683-C-T is Benign according to our data. Variant chr9-110787683-C-T is described in ClinVar as Conflicting_classifications_of_pathogenicity. ClinVar VariationId is 476134.

BS1

Variant frequency is greater than expected in population afr. GnomAd4 allele frequency = 0.000677 (103/152208) while in subpopulation AFR AF = 0.00236 (98/41520). AF 95% confidence interval is 0.00198. There are 0 homozygotes in GnomAd4. There are 40 alleles in the male GnomAd4 subpopulation. Median coverage is 31. This position passed quality control check.

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	MANE	Protein	UniProt
MUSK	NM_005592.4 link	c.1779-7C>T		splice_region_variant, intron_variant	Intron 13 of 14	ENST00000374448.9	NP_005583.1	O15146-1

Ensembl

Gene	Transcript	HGVSc	Effect	Exon rank	TSL	MANE	Protein	UniProt
MUSK	ENST00000374448.9 link	c.1779-7C>T	splice_region_variant, intron_variant	Intron 13 of 14	5	NM_005592.4	ENSP00000363571.4	O15146-1
MUSK	ENST00000416899.7 link	c.1755-7C>T	splice_region_variant, intron_variant	Intron 12 of 13	5		ENSP00000393608.3	A0A087WSY1
MUSK	ENST00000189978.10 link	c.1521-7C>T	splice_region_variant, intron_variant	Intron 12 of 13	5		ENSP00000189978.6	O15146-2
MUSK	ENST00000374438.1 link	n.810-7C>T	splice_region_variant, intron_variant	Intron 2 of 2	3

Frequencies

GnomAD3 genomes

AF:

0.000677

AC:

103

AN:

152090

Hom.:

Cov.:

show subpopulations

Gnomad AFR

AF:

0.00237

Gnomad AMI

AF:

0.00

Gnomad AMR

AF:

0.000262

Gnomad ASJ

AF:

0.00

Gnomad EAS

AF:

0.00

Gnomad SAS

AF:

0.00

Gnomad FIN

AF:

0.00

Gnomad MID

AF:

0.00

Gnomad NFE

AF:

0.00

Gnomad OTH

AF:

0.000478

GnomAD2 exomes

AF:

0.000106

AC:

AN:

246192

AF XY:

0.0000749

show subpopulations

Gnomad AFR exome

AF:

0.00149

Gnomad AMR exome

AF:

0.0000885

Gnomad ASJ exome

AF:

0.00

Gnomad EAS exome

AF:

0.00

Gnomad FIN exome

AF:

0.00

Gnomad NFE exome

AF:

0.00

Gnomad OTH exome

AF:

0.00

GnomAD4 exome

AF:

0.0000596

AC:

AN:

1458534

Hom.:

Cov.:

AF XY:

0.0000455

AC XY:

AN XY:

725460

show subpopulations

African (AFR)

AF:

0.00232

AC:

AN:

33248

American (AMR)

AF:

0.0000454

AC:

AN:

44090

Ashkenazi Jewish (ASJ)

AF:

0.00

AC:

AN:

25964

East Asian (EAS)

AF:

0.00

AC:

AN:

39680

South Asian (SAS)

AF:

0.00

AC:

AN:

85506

European-Finnish (FIN)

AF:

0.00

AC:

AN:

53226

Middle Eastern (MID)

AF:

0.000348

AC:

AN:

5742

European-Non Finnish (NFE)

AF:

0.00

AC:

AN:

1110866

Other (OTH)

AF:

0.0000996

AC:

AN:

60212

Allele Balance Distribution

Red line indicates average allele balance

Average allele balance: 0.492

Heterozygous variant carriers

0.00

0.20

0.40

0.60

0.80

0.95

Allele balance

Age Distribution

Exome Het

Variant carriers

<30

30-35

35-40

40-45

45-50

50-55

55-60

60-65

65-70

70-75

75-80

>80

Age

GnomAD4 genome

AF:

0.000677

AC:

103

AN:

152208

Hom.:

Cov.:

AF XY:

0.000537

AC XY:

AN XY:

74424

show subpopulations

African (AFR)

AF:

0.00236

AC:

AN:

41520

American (AMR)

AF:

0.000262

AC:

AN:

15292

Ashkenazi Jewish (ASJ)

AF:

0.00

AC:

AN:

3470

East Asian (EAS)

AF:

0.00

AC:

AN:

5182

South Asian (SAS)

AF:

0.00

AC:

AN:

4824

European-Finnish (FIN)

AF:

0.00

AC:

AN:

10598

Middle Eastern (MID)

AF:

0.00

AC:

AN:

294

European-Non Finnish (NFE)

AF:

0.00

AC:

AN:

68000

Other (OTH)

AF:

0.000473

AC:

AN:

2116

Allele Balance Distribution

Red line indicates average allele balance

Average allele balance: 0.507

Heterozygous variant carriers

0.00

0.20

0.40

0.60

0.80

0.95

Allele balance

Age Distribution

Genome Het

Variant carriers

<30

30-35

35-40

40-45

45-50

50-55

55-60

60-65

65-70

70-75

75-80

>80

Age

Alfa

AF:

0.000260

Hom.:

Bravo

AF:

0.000786

ClinVar

Significance: Conflicting classifications of pathogenicity

Submissions summary: Uncertain:1Benign:2

Revision: criteria provided, conflicting classifications

LINK: link

Submissions by phenotype

Congenital myasthenic syndrome 9

Uncertain:1

Jan 13, 2018

Illumina Laboratory Services, Illumina

Significance:Uncertain significance

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, 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 provided

Benign:1

Apr 13, 2018

GeneDx

Significance:Likely benign

Review Status:criteria provided, single submitter

Collection Method:clinical testing

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. -

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

Benign:1

Oct 29, 2024

Labcorp Genetics (formerly Invitae), Labcorp

Significance:Likely 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

-0.71

CADD

Benign

7.1

(source)

DANN

Benign

0.61

PhyloP100

0.39

Splicing

Name

Calibrated prediction

Score

Prediction

dbscSNV1_ADA

Benign

0.00034

dbscSNV1_RF

Benign

0.0080

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

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Variant summary

Frequency

Consequence

Scores

Clinical Significance

Conservation

Publications

ACMG classification

Transcripts

RefSeq

Ensembl

Frequencies

Age Distribution

Age Distribution

ClinVar

Submissions by phenotype

Computational scores

Splicing

Publications

Other links and lift over