9-110800320-G-T

Variant names:

• chr9-110800320-G-T
• NM_005592.4:c.1942G>T

Variant summary

Our verdict is Uncertain significance. Variant got 3 ACMG points: 3P and 0B. PM2 PP3

The NM_005592.4(MUSK):​c.1942G>T​(p.Gly648Trp) variant causes a missense change involving the alteration of a conserved nucleotide. The variant allele was found at a frequency of 0.00000206 in 1,456,790 control chromosomes in the GnomAD database, with no homozygous occurrence. In-silico tool predicts a pathogenic outcome for this variant. No clinical diagnostic laboratories have submitted clinical-significance assessments for this variant to ClinVar.

• Frequency:
  • Genomes: not found (cov: 32)
  • Exomes 𝑓: 0.0000021 (0 hom.)
• Consequence: MUSK NM_005592.4 missense
• Clinical Significance: Not reported in ClinVar
• Conservation: PhyloP100: 9.92

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]

ACMG classification

Verdict is Uncertain_significance. Variant got 3 ACMG points.

• PM2: Very rare variant in population databases, with high coverage
• PP3: MetaRNN computational evidence supports a deleterious effect, 0.83

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	MANE	Protein	UniProt
MUSK	NM_005592.4	c.1942G>T	p.Gly648Trp	missense_variant	Exon 15 of 15	ENST00000374448.9	NP_005583.1

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	TSL	MANE	Protein	Appris	UniProt
MUSK	ENST00000374448.9	c.1942G>T	p.Gly648Trp	missense_variant	Exon 15 of 15	5	NM_005592.4	ENSP00000363571.4
MUSK	ENST00000416899.7	c.1918G>T	p.Gly640Trp	missense_variant	Exon 14 of 14	5		ENSP00000393608.3
MUSK	ENST00000189978.10	c.1684G>T	p.Gly562Trp	missense_variant	Exon 14 of 14	5		ENSP00000189978.6

Frequencies

GnomAD3 genomes Cov.: 32

GnomAD4 exome AF: 0.00000206 AC: 3 AN: 1456790 Hom.: 0 Cov.: 32 AF XY: 0.00 AC XY: 0 AN XY: 723756

Gnomad4 AFR exome AF: 0.00

Gnomad4 AMR exome AF: 0.00

Gnomad4 ASJ exome AF: 0.00

Gnomad4 EAS exome AF: 0.00

Gnomad4 SAS exome AF: 0.00

Gnomad4 FIN exome AF: 0.00

Gnomad4 NFE exome AF: 0.00000271

Gnomad4 OTH exome AF: 0.00

GnomAD4 genome Cov.: 32

ClinVar

Not reported in ClinVar

Computational scores

Source: dbNSFP v4.3

Name	Calibrated prediction	Score	Prediction
AlphaMissense	Pathogenic	0.91
BayesDel_addAF	Pathogenic	0.27	D
BayesDel_noAF	Pathogenic	0.15
CADD	Pathogenic	26
DANN	Uncertain	0.99
DEOGEN2	Uncertain	0.67	D;.;.;.
Eigen	Uncertain	0.45
Eigen_PC	Uncertain	0.52
FATHMM_MKL	Pathogenic	0.99	D
LIST_S2	Uncertain	0.88	D;D;D;D
M_CAP	Uncertain	0.16	D
MetaRNN	Pathogenic	0.83	D;D;D;D
MetaSVM	Benign	-0.54	T
MutationAssessor	Pathogenic	3.0	M;.;.;.
PrimateAI	Pathogenic	0.90	D
PROVEAN	Pathogenic	-6.3	D;.;.;.
REVEL	Uncertain	0.56
Sift	Pathogenic	0.0	D;.;.;.
Sift4G	Pathogenic	0.0	D;D;D;D
Polyphen		0.15	B;.;.;.
Vest4		0.85
MutPred		0.68		Gain of ubiquitination at K649 (P = 0.0597);.;.;.;
MVP		0.66
MPC		0.48
ClinPred		1.0	D
GERP RS		5.1
Varity_R		0.93
gMVP		0.77

Splicing

Name	Calibrated prediction	Score	Prediction
SpliceAI score (max)		0.010		Details are displayed if max score is > 0.2

Find out detailed SpliceAI scores and Pangolin per-transcript scores at spliceailookup.broadinstitute.org

Publications

No publications associated with this variant yet.

Other links and lift over

hg19: chr9-113562600;