dbSNP rs1455067791: CHRM2:p.Val346Ile (chr7-137015901-G-A) – ACMG Classification: Likely_benign (-2 pts)

Variant summary

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

The NM_001006630.2(CHRM2):c.1036G>A(p.Val346Ile) variant causes a missense change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.0000031 in 1,613,050 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. No clinical diagnostic laboratories have submitted clinical-significance assessments for this variant to ClinVar.

Frequency

Genomes: 𝑓 0.000013 ( 0 hom., cov: 32)

Exomes 𝑓: 0.0000021 ( 0 hom. )

Consequence

CHRM2
NM_001006630.2 missense

Scores

Clinical Significance

Not reported in ClinVar

Conservation

PhyloP100: 0.868

Variant links:

Genes affected

CHRM2 (HGNC:1951): (cholinergic receptor muscarinic 2) The muscarinic cholinergic receptors belong to a larger family of G protein-coupled receptors. The functional diversity of these receptors is defined by the binding of acetylcholine to these receptors and includes cellular responses such as adenylate cyclase inhibition, phosphoinositide degeneration, and potassium channel mediation. Muscarinic receptors influence many effects of acetylcholine in the central and peripheral nervous system. The muscarinic cholinergic receptor 2 is involved in mediation of bradycardia and a decrease in cardiac contractility. Multiple alternatively spliced transcript variants have been described for this gene. [provided by RefSeq, Jul 2008]

CHRM2 links:

ENSG00000234352 (HGNC:):

ENSG00000234352 links:

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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=0.031980544).

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	MANE	Protein	UniProt
CHRM2	NM_001006630.2 link	c.1036G>A	p.Val346Ile	missense_variant	Exon 4 of 4	ENST00000680005.1	NP_001006631.1	P08172A4D1Q0Q6SL56Q86SJ1

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	TSL	MANE	Protein	Appris	UniProt
CHRM2	ENST00000680005.1 link	c.1036G>A	p.Val346Ile	missense_variant	Exon 4 of 4		NM_001006630.2	ENSP00000505686.1		P08172

Frequencies

GnomAD3 genomes

AF:

0.0000132

AC:

AN:

151922

Hom.:

Cov.:

show subpopulations

Gnomad AFR

AF:

0.0000242

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:

0.00

Gnomad OTH

AF:

0.000478

GnomAD4 exome

AF:

0.00000205

AC:

AN:

1461128

Hom.:

Cov.:

AF XY:

0.00000413

AC XY:

AN XY:

726890

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:

0.00000270

Gnomad4 OTH exome

AF:

0.00

GnomAD4 genome

AF:

0.0000132

AC:

AN:

151922

Hom.:

Cov.:

AF XY:

0.00

AC XY:

AN XY:

74178

show subpopulations

Gnomad4 AFR

AF:

0.0000242

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:

0.00

Gnomad4 OTH

AF:

0.000478

Bravo

AF:

0.00000378

ClinVar

Not reported in ClinVar

Computational scores

Source: dbNSFP v4.3

Name

Calibrated prediction

Score

Prediction

AlphaMissense

Benign

0.067

BayesDel_addAF

Benign

-0.30

BayesDel_noAF

Benign

-0.66

CADD

Benign

2.1

DANN

Benign

0.80

DEOGEN2

Benign

0.044

T;T;T;T

Eigen

Benign

-1.1

Eigen_PC

Benign

-0.91

FATHMM_MKL

Benign

0.59

LIST_S2

Benign

0.75

.;.;.;T

M_CAP

Benign

0.0064

MetaRNN

Benign

0.032

T;T;T;T

MetaSVM

Benign

-1.0

MutationAssessor

Benign

-1.5

N;N;N;N

PrimateAI

Benign

0.35

PROVEAN

Benign

-0.030

N;N;N;N

REVEL

Benign

0.036

Sift

Benign

0.78

T;T;T;T

Sift4G

Benign

0.79

T;T;T;T

Polyphen

0.0

B;B;B;B

Vest4

0.011

MutPred

0.31

Gain of glycosylation at S349 (P = 0.1728);Gain of glycosylation at S349 (P = 0.1728);Gain of glycosylation at S349 (P = 0.1728);Gain of glycosylation at S349 (P = 0.1728);

MVP

0.23

MPC

0.44

ClinPred

0.052

GERP RS

-3.0

Varity_R

0.044

gMVP

0.093

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

Computational scores

Splicing

Publications

LitVar

Other links and lift over