NM_005592.4:c.2014C>T

Variant names:

• chr9-110800392-C-T
• rs779042240
• NM_005592.4:c.2014C>T
• MUSK p.Pro672Ser

Variant summary

Our verdict is Uncertain significance. The variant received 2 ACMG points: 2P and 0B. PM2

The NM_005592.4(MUSK):​c.2014C>T​(p.Pro672Ser) variant causes a missense change. The variant allele was found at a frequency of 0.00000889 in 1,461,708 control chromosomes in the GnomAD database, with no homozygous occurrence. Variant has been reported in ClinVar as Uncertain significance (★★).

• Frequency:
  • Genomes: not found (cov: 32)
  • Exomes 𝑓: 0.0000089 (0 hom.)
• Consequence: MUSK NM_005592.4 missense
• Clinical Significance: Uncertain significance criteria provided, multiple submitters, no conflicts U:2
• Conservation: PhyloP100: 6.09
• Publications: 0 publications found

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)
• 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

ACMG classification

Our verdict: Uncertain_significance. The variant received 2 ACMG points.

• PM2: Very rare variant in population databases, with high coverage

Variant Effect in Transcripts

ACMG analysis was done for transcript: NM_005592.4. You can select a different transcript below to see updated ACMG assignments.

RefSeq Transcripts

Sel.	Gene	Transcript	Tags	HGVSc	HGVSp	Effect	Exon Rank	Protein	UniProt
	MUSK	NM_005592.4	MANE Select	c.2014C>T	p.Pro672Ser	missense	Exon 15 of 15	NP_005583.1	O15146-1
	MUSK	NM_001166280.2		c.1756C>T	p.Pro586Ser	missense	Exon 14 of 14	NP_001159752.1	O15146-2
	MUSK	NM_001166281.2		c.1726C>T	p.Pro576Ser	missense	Exon 13 of 13	NP_001159753.1	O15146-3

Ensembl Transcripts

Sel.	Gene	Transcript	Tags	HGVSc	HGVSp	Effect	Exon Rank	Protein	UniProt
	MUSK	ENST00000374448.9	TSL:5 MANE Select	c.2014C>T	p.Pro672Ser	missense	Exon 15 of 15	ENSP00000363571.4	O15146-1
	MUSK	ENST00000416899.7	TSL:5	c.1990C>T	p.Pro664Ser	missense	Exon 14 of 14	ENSP00000393608.3	A0A087WSY1
	MUSK	ENST00000189978.10	TSL:5	c.1756C>T	p.Pro586Ser	missense	Exon 14 of 14	ENSP00000189978.6	O15146-2

Frequencies

GnomAD3 genomes Cov.: 32

GnomAD2 exomes AF: 0.0000241 AC: 6 AN: 249258 AF XY: 0.0000296

Gnomad AFR exome AF: 0.00

Gnomad AMR exome AF: 0.00

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: 0.00000889 AC: 13 AN: 1461708 Hom.: 0 Cov.: 32 AF XY: 0.0000138 AC XY: 10 AN XY: 727136

African (AFR) AF: 0.00 AC: 0 AN: 33480

American (AMR) AF: 0.00 AC: 0 AN: 44724

Ashkenazi Jewish (ASJ) AF: 0.00 AC: 0 AN: 26136

East Asian (EAS) AF: 0.00 AC: 0 AN: 39700

South Asian (SAS) AF: 0.000151 AC: 13 AN: 86258

European-Finnish (FIN) AF: 0.00 AC: 0 AN: 53402

Middle Eastern (MID) AF: 0.00 AC: 0 AN: 5768

European-Non Finnish (NFE) AF: 0.00 AC: 0 AN: 1111866

Other (OTH) AF: 0.00 AC: 0 AN: 60374

GnomAD4 genome Cov.: 32

Alfa AF: 0.00 Hom.: 0

ClinVar

ClinVar submissions

Significance: Uncertain significance

Revision: criteria provided, multiple submitters, no conflicts

Pathogenic	VUS	Benign	Condition
-	1	-	Fetal akinesia deformation sequence 1;C4225368:Congenital myasthenic syndrome 9 (1)
-	1	-	not provided (1)

Computational scores

Source: dbNSFP v4.9

Name	Calibrated prediction	Score	Prediction
AlphaMissense	Uncertain	0.34
BayesDel_addAF	Benign	-0.25	T
BayesDel_noAF	Benign	-0.32
CADD	Uncertain	25
DANN	Pathogenic	1.0
DEOGEN2	Uncertain	0.49	T
Eigen	Uncertain	0.56
Eigen_PC	Uncertain	0.57
FATHMM_MKL	Pathogenic	0.98	D
LIST_S2	Uncertain	0.92	D
M_CAP	Benign	0.033	D
MetaRNN	Uncertain	0.52	D
MetaSVM	Benign	-0.65	T
MutationAssessor	Benign	1.7	L
PhyloP100		6.1
PrimateAI	Benign	0.38	T
PROVEAN	Pathogenic	-6.2	D
REVEL	Benign	0.26
Sift	Uncertain	0.0030	D
Sift4G	Uncertain	0.0060	D
Varity_R		0.59
gMVP		0.55
Mutation Taster		=36/64	disease causing

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

MaxEntScan Visualizer can be used to analyze the impact of this mutation on the neighboring sequence.

Other links and lift over

dbSNP: rs779042240;

hg19: chr9-113562672;

COSMIC: COSV105049984;