11-62909880-G-C

Variant names:

• chr11-62909880-G-C
• rs2067479
• NM_000738.3:c.1221C>G

Variant summary

Our verdict is Uncertain significance. The variant received 4 ACMG points: 4P and 0B. PM2 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
• Publications: 7 publications found

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]

CHRM1 Gene-Disease associations (from GenCC):

• intellectual disability

  Inheritance: AD Classification: LIMITED Submitted by: G2P

CHRM1-AS1 (HGNC:58194):

ACMG classification

Our verdict: Uncertain_significance. The variant received 4 ACMG points.

• PM2: Very rare variant in population databases, with high coverage
• PP3: MetaRNN computational evidence supports a deleterious effect, 0.914

Variant Effect in Transcripts

ACMG analysis was done for transcript: NM_000738.3. You can select a different transcript below to see updated ACMG assignments.

RefSeq Transcripts

Sel.	Gene	Transcript	Tags	HGVSc	HGVSp	Effect	Exon Rank	Protein	UniProt
	CHRM1	NM_000738.3	MANE Select	c.1221C>G	p.Cys407Trp	missense	Exon 2 of 2	NP_000729.2
	CHRM1-AS1	NR_199052.1		n.209+265G>C		intron	N/A

Ensembl Transcripts

Sel.	Gene	Transcript	Tags	HGVSc	HGVSp	Effect	Exon Rank	Protein	UniProt
	CHRM1	ENST00000306960.4	TSL:1 MANE Select	c.1221C>G	p.Cys407Trp	missense	Exon 2 of 2	ENSP00000306490.3	P11229-1
	CHRM1	ENST00000856787.1		c.1221C>G	p.Cys407Trp	missense	Exon 2 of 2	ENSP00000526846.1
	CHRM1	ENST00000856788.1		c.1221C>G	p.Cys407Trp	missense	Exon 3 of 3	ENSP00000526847.1

Frequencies

GnomAD3 genomes Cov.: 32

GnomAD2 exomes AF: 0.00 AC: 0 AN: 251430 AF XY: 0.00

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 FIN exome AF: 0.00

Gnomad NFE exome AF: 0.00

Gnomad OTH exome AF: 0.00

GnomAD4 exome Cov.: 33

GnomAD4 genome Cov.: 32

ExAC AF: 0.0000988 AC: 12

ClinVar

Not reported in ClinVar

Computational scores

Source: dbNSFP v4.9

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
M_CAP	Benign	0.068	D
MetaRNN	Pathogenic	0.91	D
MetaSVM	Benign	-0.74	T
MutationAssessor	Pathogenic	3.5	M
PhyloP100		5.8
PrimateAI	Uncertain	0.77	T
PROVEAN	Pathogenic	-10	D
REVEL	Uncertain	0.42
Sift	Pathogenic	0.0	D
Sift4G	Pathogenic	0.0	D
Polyphen		1.0	D
Vest4		0.82
MutPred		0.80		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
Mutation Taster		=37/63	disease causing

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

Other links and lift over

dbSNP: rs2067479; hg19: chr11-62677352;