11-46385418-G-C

Position:

• chr11-46385418-G-C

Variant summary

Our verdict is Uncertain significance. Variant got 0 ACMG points: 2P and 2B. PM2 BP4_Moderate

The NM_000741.5(CHRM4):​c.1140C>G​(p.Ile380Met) variant causes a missense change involving the alteration of a non-conserved nucleotide. The variant was absent in control chromosomes in GnomAD project. In-silico tool predicts a benign outcome for this variant. 13/21 in silico tools predict a benign outcome for this variant. Variant has been reported in ClinVar as Uncertain significance (★).

• Frequency: Genomes: not found (cov: 33)
• Consequence: CHRM4 NM_000741.5 missense
• Clinical Significance: Uncertain significance criteria provided, single submitter U:1
• Conservation: PhyloP100: -1.74

Genes affected

CHRM4 (HGNC:1953): (cholinergic receptor muscarinic 4) 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 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 clinical implications of this receptor are unknown; however, mouse studies link its function to adenylyl cyclase inhibition. [provided by RefSeq, Jul 2008]

ACMG classification

Verdict is Uncertain_significance. Variant got 0 ACMG points.

• PM2: Very rare variant in population databases, with high coverage
• BP4: Computational evidence support a benign effect (MetaRNN=0.07801649).

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	MANE	Protein	UniProt
CHRM4	NM_000741.5	c.1140C>G	p.Ile380Met	missense_variant	2/2	ENST00000682254.1	NP_000732.2
CHRM4	NM_001366692.2	c.1140C>G	p.Ile380Met	missense_variant	2/2		NP_001353621.1

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	TSL	MANE	Protein	Appris	UniProt
CHRM4	ENST00000682254.1	c.1140C>G	p.Ile380Met	missense_variant	2/2		NM_000741.5	ENSP00000507561.1
CHRM4	ENST00000433765.3	c.1140C>G	p.Ile380Met	missense_variant	1/1	6		ENSP00000409378.2

Frequencies

GnomAD3 genomes Cov.: 33

GnomAD4 exome Cov.: 32

GnomAD4 genome Cov.: 33

ClinVar

Significance: Uncertain significance

Submissions summary: Uncertain:1

Revision: criteria provided, single submitter

Submissions by phenotype

not specified Uncertain:1

Uncertain significance, criteria provided, single submitter

clinical testing

Ambry Genetics

Oct 14, 2023

The c.1140C>G (p.I380M) alteration is located in exon 1 (coding exon 1) of the CHRM4 gene. This alteration results from a C to G substitution at nucleotide position 1140, causing the isoleucine (I) at amino acid position 380 to be replaced by a methionine (M). 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	Uncertain	0.39
BayesDel_addAF	Benign	-0.12	T
BayesDel_noAF	Benign	-0.40
CADD	Benign	0.97
DANN	Benign	0.83
DEOGEN2	Benign	0.096	T
Eigen	Benign	-1.3
Eigen_PC	Benign	-1.3
FATHMM_MKL	Benign	0.095	N
LIST_S2	Uncertain	0.95	D
M_CAP	Uncertain	0.14	D
MetaRNN	Benign	0.078	T
MetaSVM	Benign	-1.1	T
MutationAssessor	Benign	1.5	L
PrimateAI	Uncertain	0.72	T
PROVEAN	Benign	0.15	N
REVEL	Benign	0.13
Sift	Benign	0.66	T
Sift4G	Benign	0.30	T
Polyphen		0.096	B
Vest4		0.24
MutPred		0.52		Gain of disorder (P = 0.03);
MVP		0.86
MPC		0.96
ClinPred		0.094	T
GERP RS		-7.8
Varity_R		0.059
gMVP		0.77

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

No publications associated with this variant yet.

Other links and lift over

hg19: chr11-46406968;