NM_000745.4:c.701G>A

Variant names:

• chr15-78590092-G-A
• rs754813352
• NM_000745.4:c.701G>A

Variant summary

Our verdict is Uncertain significance. The variant received 3 ACMG points: 3P and 0B. PM2 PP3

The NM_000745.4(CHRNA5):​c.701G>A​(p.Cys234Tyr) variant causes a missense change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.0000112 in 1,614,116 control chromosomes in the GnomAD database, with no homozygous occurrence. In-silico tool predicts a pathogenic outcome for this variant. Variant has been reported in ClinVar as Uncertain significance (★).

• Frequency:
  • Genomes: 𝑓 0.000033 (0 hom., cov: 32)
  • Exomes 𝑓: 0.0000089 (0 hom.)
• Consequence: CHRNA5 NM_000745.4 missense
• Clinical Significance: Uncertain significance criteria provided, single submitter U:1
• Conservation: PhyloP100: 2.63
• Publications: 0 publications found

Genes affected

CHRNA5 (HGNC:1959): (cholinergic receptor nicotinic alpha 5 subunit) The protein encoded by this gene is a nicotinic acetylcholine receptor subunit and a member of a superfamily of ligand-gated ion channels that mediate fast signal transmission at synapses. These receptors are thought to be heteropentamers composed of separate but similar subunits. Defects in this gene have been linked to susceptibility to lung cancer type 2 (LNCR2).[provided by RefSeq, Jun 2010]

ENSG00000261762 (HGNC:):

ACMG classification

Our verdict: Uncertain_significance. The variant received 3 ACMG points.

• PM2: Very rare variant in population databases, with high coverage
• PP3: MetaRNN computational evidence supports a deleterious effect, 0.786

Variant Effect in Transcripts

ACMG analysis was done for transcript: NM_000745.4. 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
	CHRNA5	NM_000745.4	MANE Select	c.701G>A	p.Cys234Tyr	missense	Exon 5 of 6	NP_000736.2
	CHRNA5	NM_001395171.1		c.701G>A	p.Cys234Tyr	missense	Exon 5 of 6	NP_001382100.1
	CHRNA5	NM_001395173.1		c.701G>A	p.Cys234Tyr	missense	Exon 5 of 6	NP_001382102.1

Ensembl Transcripts

Sel.	Gene	Transcript	Tags	HGVSc	HGVSp	Effect	Exon Rank	Protein	UniProt
	CHRNA5	ENST00000299565.9	TSL:1 MANE Select	c.701G>A	p.Cys234Tyr	missense	Exon 5 of 6	ENSP00000299565.5	P30532
	CHRNA5	ENST00000394802.4	TSL:3	c.515G>A	p.Cys172Tyr	missense	Exon 4 of 5	ENSP00000378281.4	H7BYM0
	CHRNA5	ENST00000913028.1		c.591+110G>A		intron	N/A	ENSP00000583087.1

Frequencies

GnomAD3 genomes AF: 0.0000328 AC: 5 AN: 152228 Hom.: 0 Cov.: 32

Gnomad AFR AF: 0.0000241

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: 0.0000588

Gnomad OTH AF: 0.00

GnomAD2 exomes AF: 0.0000199 AC: 5 AN: 251182 AF XY: 0.0000147

Gnomad AFR exome AF: 0.000123

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: 0.0000264

Gnomad OTH exome AF: 0.00

GnomAD4 exome AF: 0.00000889 AC: 13 AN: 1461888 Hom.: 0 Cov.: 31 AF XY: 0.00000413 AC XY: 3 AN XY: 727248

African (AFR) AF: 0.0000597 AC: 2 AN: 33480

American (AMR) AF: 0.00 AC: 0 AN: 44724

Ashkenazi Jewish (ASJ) AF: 0.00 AC: 0 AN: 26136

East Asian (EAS) AF: 0.00 AC: 0 AN: 39700

South Asian (SAS) AF: 0.00 AC: 0 AN: 86258

European-Finnish (FIN) AF: 0.00 AC: 0 AN: 53414

Middle Eastern (MID) AF: 0.00 AC: 0 AN: 5768

European-Non Finnish (NFE) AF: 0.00000989 AC: 11 AN: 1112012

Other (OTH) AF: 0.00 AC: 0 AN: 60396

GnomAD4 genome AF: 0.0000328 AC: 5 AN: 152228 Hom.: 0 Cov.: 32 AF XY: 0.0000269 AC XY: 2 AN XY: 74386

African (AFR) AF: 0.0000241 AC: 1 AN: 41454

American (AMR) AF: 0.00 AC: 0 AN: 15282

Ashkenazi Jewish (ASJ) AF: 0.00 AC: 0 AN: 3470

East Asian (EAS) AF: 0.00 AC: 0 AN: 5202

South Asian (SAS) AF: 0.00 AC: 0 AN: 4838

European-Finnish (FIN) AF: 0.00 AC: 0 AN: 10618

Middle Eastern (MID) AF: 0.00 AC: 0 AN: 316

European-Non Finnish (NFE) AF: 0.0000588 AC: 4 AN: 68044

Other (OTH) AF: 0.00 AC: 0 AN: 2092

Alfa AF: 0.0000494 Hom.: 0

Bravo AF: 0.0000302

ExAC AF: 0.0000247 AC: 3

ClinVar

ClinVar submissions as Germline

Significance: Uncertain significance

Revision: criteria provided, single submitter

Pathogenic	VUS	Benign	Condition
-	1	-	not specified (1)

Computational scores

Source: dbNSFP v4.9

Name	Calibrated prediction	Score	Prediction
AlphaMissense	Benign	0.24
BayesDel_addAF	Benign	-0.10	T
BayesDel_noAF	Benign	-0.15
CADD	Benign	20
DANN	Benign	0.97
DEOGEN2	Uncertain	0.72	D
Eigen	Uncertain	0.55
Eigen_PC	Uncertain	0.46
FATHMM_MKL	Uncertain	0.93	D
LIST_S2	Benign	0.43	T
M_CAP	Uncertain	0.12	D
MetaRNN	Pathogenic	0.79	D
MetaSVM	Uncertain	0.49	D
MutationAssessor	Uncertain	2.8	M
PhyloP100		2.6
PrimateAI	Benign	0.39	T
PROVEAN	Pathogenic	-8.2	D
REVEL	Uncertain	0.53
Sift	Uncertain	0.0050	D
Sift4G	Uncertain	0.011	D
Polyphen		0.99	D
Vest4		0.51
MVP		0.87
MPC		0.54
ClinPred		0.32	T
GERP RS		4.3
PromoterAI		-0.0036	Neutral
Varity_R		0.68
gMVP		0.76
Mutation Taster		=75/25	polymorphism

Splicing

Name	Calibrated prediction	Score	Prediction
SpliceAI score (max)		0.020		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: rs754813352; hg19: chr15-78882434;