4-70481696-C-G

Position:

chr4-70481696-C-G

Variant summary

Our verdict is Likely benign. Variant got -2 ACMG points: 2P and 4B. PM2BP4_Strong

The NM_152291.3(MUC7):c.952C>G(p.Leu318Val) variant causes a missense change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.00000434 in 1,614,072 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 (★).

Frequency

Genomes: 𝑓 0.0000066 ( 0 hom., cov: 32)

Exomes 𝑓: 0.0000041 ( 0 hom. )

Consequence

MUC7
NM_152291.3 missense

Scores

Clinical Significance

Uncertain significance criteria provided, single submitter U:1

Conservation

PhyloP100: -1.52

Variant links:

Genes affected

MUC7 (HGNC:7518): (mucin 7, secreted) This gene encodes a small salivary mucin, which is thought to play a role in facilitating the clearance of bacteria in the oral cavity and to aid in mastication, speech, and swallowing. The central domain of this glycoprotein contains tandem repeats, each composed of 23 amino acids. This antimicrobial protein has antibacterial and antifungal activity. The most common allele contains 6 repeats, and some alleles may be associated with susceptibility to asthma. Alternatively spliced transcript variants with different 5' UTR, but encoding the same protein, have been found for this gene. [provided by RefSeq, Oct 2014]

MUC7 links:

Genome browser will be placed here

ACMG classification

Classification made for transcript

Verdict is Likely_benign. Variant got -2 ACMG points.

PM2

Very rare variant in population databases, with high coverage;

BP4

Computational evidence support a benign effect (MetaRNN=0.043981254).

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	MANE	Protein
MUC7	NM_152291.3 linkuse as main transcript	c.952C>G	p.Leu318Val	missense_variant	3/3	ENST00000304887.6	NP_689504.2
MUC7	NM_001145006.2 linkuse as main transcript	c.952C>G	p.Leu318Val	missense_variant	4/4		NP_001138478.1
MUC7	NM_001145007.2 linkuse as main transcript	c.952C>G	p.Leu318Val	missense_variant	4/4		NP_001138479.1
MUC7	XM_047415723.1 linkuse as main transcript	c.952C>G	p.Leu318Val	missense_variant	4/4		XP_047271679.1

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	TSL	MANE	Protein	Appris
MUC7	ENST00000304887.6 linkuse as main transcript	c.952C>G	p.Leu318Val	missense_variant	3/3	1	NM_152291.3	ENSP00000302021	P1
MUC7	ENST00000413702.5 linkuse as main transcript	c.952C>G	p.Leu318Val	missense_variant	4/4	4		ENSP00000407422	P1
MUC7	ENST00000456088.5 linkuse as main transcript	c.952C>G	p.Leu318Val	missense_variant	4/4	4		ENSP00000400585	P1

Frequencies

GnomAD3 genomes

AF:

0.00000657

AC:

AN:

152206

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:

0.00

Gnomad SAS

AF:

0.00

Gnomad FIN

AF:

0.00

Gnomad MID

AF:

0.00

Gnomad NFE

AF:

0.0000147

Gnomad OTH

AF:

0.00

GnomAD3 exomes

AF:

0.00000398

AC:

AN:

251376

Hom.:

AF XY:

0.00000736

AC XY:

AN XY:

135856

show subpopulations

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 SAS exome

AF:

0.00

Gnomad FIN exome

AF:

0.00

Gnomad NFE exome

AF:

0.00000879

Gnomad OTH exome

AF:

0.00

GnomAD4 exome

AF:

0.00000410

AC:

AN:

1461866

Hom.:

Cov.:

AF XY:

0.00000275

AC XY:

AN XY:

727242

show subpopulations

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:

0.00000540

Gnomad4 OTH exome

AF:

0.00

GnomAD4 genome

AF:

0.00000657

AC:

AN:

152206

Hom.:

Cov.:

AF XY:

0.00

AC XY:

AN XY:

74358

show subpopulations

Gnomad4 AFR

AF:

0.00

Gnomad4 AMR

AF:

0.00

Gnomad4 ASJ

AF:

0.00

Gnomad4 EAS

AF:

0.00

Gnomad4 SAS

AF:

0.00

Gnomad4 FIN

AF:

0.00

Gnomad4 NFE

AF:

0.0000147

Gnomad4 OTH

AF:

0.00

Bravo

AF:

0.00000378

ClinVar

Significance: Uncertain significance

Submissions summary: Uncertain:1

Revision: criteria provided, single submitter

LINK: link

Submissions by phenotype

not specified

Uncertain:1

Uncertain significance, criteria provided, single submitter

clinical testing

Ambry Genetics

Mar 24, 2023

The c.952C>G (p.L318V) alteration is located in exon 4 (coding exon 2) of the MUC7 gene. This alteration results from a C to G substitution at nucleotide position 952, causing the leucine (L) at amino acid position 318 to be replaced by a valine (V). Based on insufficient or conflicting evidence, the clinical significance of this alteration remains unclear. -

Computational scores

Source: dbNSFP v4.3

Name

Calibrated prediction

Score

Prediction

AlphaMissense

Benign

0.075

BayesDel_addAF

Benign

-0.36

BayesDel_noAF

Benign

-0.75

CADD

Benign

0.046

DANN

Benign

0.29

DEOGEN2

Benign

0.0048

T;T;T

Eigen

Benign

-1.5

Eigen_PC

Benign

-1.5

FATHMM_MKL

Benign

0.025

LIST_S2

Benign

0.30

T;.;.

M_CAP

Benign

0.0092

MetaRNN

Benign

0.044

T;T;T

MetaSVM

Benign

-1.0

MutationAssessor

Benign

-0.20

N;N;N

MutationTaster

Benign

1.0

N;N;N

PrimateAI

Benign

0.19

PROVEAN

Benign

0.30

N;N;N

REVEL

Benign

0.021

Sift

Benign

0.70

T;T;T

Sift4G

Benign

0.41

T;T;T

Polyphen

0.0090

B;B;B

Vest4

0.013

MutPred

0.16

Loss of glycosylation at T316 (P = 0.0171);Loss of glycosylation at T316 (P = 0.0171);Loss of glycosylation at T316 (P = 0.0171);

MVP

0.38

MPC

0.025

ClinPred

0.011

GERP RS

-1.5

Varity_R

0.023

gMVP

0.017

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