11-62909880-G-C

Variant summary

Our verdict is Uncertain significance. Variant got 5 ACMG points: 5P and 0B. PM2 PP2 PP3_Moderate

The NM_000738.3(CHRM1):c.1221C>G(p.Cys407Trp) variant causes a missense change. The variant was absent in control chromosomes in GnomAD project. 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)
• Consequence: CHRM1 NM_000738.3 missense
• Clinical Significance: Not reported in ClinVar
• Conservation: PhyloP100: 5.79

Genes affected

CHRM1 (HGNC:1950): (cholinergic receptor muscarinic 1) 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 muscarinic cholinergic receptor 1 is involved in mediation of vagally-induced bronchoconstriction and in the acid secretion of the gastrointestinal tract. The gene encoding this receptor is localized to 11q13. [provided by RefSeq, Jul 2008]

(HGNC:):

ACMG classification

Verdict is Uncertain_significance. Variant got 5 ACMG points.

• PM2: Very rare variant in population databases, with high coverage
• PP2: Missense variant where missense usually causes diseases, CHRM1
• PP3: MetaRNN computational evidence supports a deleterious effect, 0.914

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	MANE	UniProt
CHRM1	NM_000738.3	c.1221C>G	p.Cys407Trp	missense_variant	2/2	ENST00000306960.4
LOC124902683	XR_007062701.1	n.86+265G>C		intron_variant, non_coding_transcript_variant
CHRM1	XM_011544742.3	c.1221C>G	p.Cys407Trp	missense_variant	2/2
LOC124902683	XR_007062700.1	n.86+265G>C		intron_variant, non_coding_transcript_variant

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	TSL	MANE	Appris	UniProt
CHRM1	ENST00000306960.4	c.1221C>G	p.Cys407Trp	missense_variant	2/2	1	NM_000738.3	P1
	ENST00000543624.1	n.70+265G>C		intron_variant, non_coding_transcript_variant		3
CHRM1	ENST00000543973.1	c.1221C>G	p.Cys407Trp	missense_variant	3/3	5

Frequencies

GnomAD3 genomes Cov.: 32

GnomAD4 exome Cov.: 33

GnomAD4 genome Cov.: 32

ExAC AF: 0.0000988 AC: 12

ClinVar

Not reported in ClinVar

Computational scores

Source: dbNSFP v4.3

Name	Calibrated prediction	Score	Prediction
AlphaMissense	Pathogenic	1.0
BayesDel_addAF	Uncertain	0.13	D
BayesDel_noAF	Uncertain	-0.060
Cadd	Pathogenic	27
Dann	Uncertain	0.99
DEOGEN2	Uncertain	0.76	D;.
Eigen	Uncertain	0.45
Eigen_PC	Uncertain	0.38
FATHMM_MKL	Uncertain	0.96	D
LIST_S2	Pathogenic	0.98	D;D
M_CAP	Benign	0.068	D
MetaRNN	Pathogenic	0.91	D;D
MetaSVM	Benign	-0.74	T
MutationAssessor	Pathogenic	3.5	M;M
MutationTaster	Benign	1.0	D
PrimateAI	Uncertain	0.77	T
PROVEAN	Pathogenic	-10	D;D
REVEL	Uncertain	0.42
Sift	Pathogenic	0.0	D;D
Sift4G	Pathogenic	0.0	D;.
Polyphen		1.0	D;.
Vest4		0.82
MutPred		0.80		Loss of stability (P = 0.0846);Loss of stability (P = 0.0846);
MVP		0.74
MPC		2.3
ClinPred		1.0	D
GERP RS		3.6
Varity_R		0.93
gMVP		0.98

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

LitVar

Other links and lift over

dbSNP: rs2067479; hg19: chr11-62677352;