Variant 15-78590004-C-A details in Genebe, Genetics Data Aggregator

Variant summary

Our verdict is Uncertain significance. Variant got 0 ACMG points: 2P and 2B. PM2BP4_Moderate

The NM_000745.4(CHRNA5):c.613C>A(p.Gln205Lys) variant causes a missense change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.000000684 in 1,461,838 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: not found (cov: 32)

Exomes 𝑓: 6.8e-7 ( 0 hom. )

Consequence

CHRNA5
NM_000745.4 missense

Scores

Clinical Significance

Uncertain significance criteria provided, single submitter U:1

Conservation

PhyloP100: 1.22

Variant links:

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]

CHRNA5 links:

ENSG00000261762 (HGNC:):

ENSG00000261762 links:

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ACMG classification

Classification made for transcript

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=0.114904255).

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	MANE	Protein	UniProt
CHRNA5	NM_000745.4 linkuse as main transcript	c.613C>A	p.Gln205Lys	missense_variant	5/6	ENST00000299565.9	NP_000736.2	P30532Q6EWN4

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	TSL	MANE	Protein	UniProt
CHRNA5	ENST00000299565.9 linkuse as main transcript	c.613C>A	p.Gln205Lys	missense_variant	5/6	1	NM_000745.4	ENSP00000299565.5	P30532
CHRNA5	ENST00000394802.4 linkuse as main transcript	c.427C>A	p.Gln143Lys	missense_variant	4/5	3		ENSP00000378281.4	H7BYM0
CHRNA5	ENST00000559554.5 linkuse as main transcript	c.458+155C>A		intron_variant		3		ENSP00000453519.1	H0YM98
ENSG00000261762	ENST00000567141.1 linkuse as main transcript	n.1273G>T		non_coding_transcript_exon_variant	1/1	6

Frequencies

GnomAD3 genomes

Cov.:

GnomAD3 exomes

AF:

0.00000398

AC:

AN:

251232

Hom.:

AF XY:

0.00

AC XY:

AN XY:

135790

show subpopulations

Gnomad AFR exome

AF:

0.00

Gnomad AMR exome

AF:

0.0000289

Gnomad ASJ exome

AF:

0.00

Gnomad EAS exome

AF:

0.00

Gnomad SAS exome

AF:

0.00

Gnomad FIN exome

AF:

0.00

Gnomad NFE exome

AF:

0.00

Gnomad OTH exome

AF:

0.00

GnomAD4 exome

AF:

6.84e-7

AC:

AN:

1461838

Hom.:

Cov.:

AF XY:

0.00

AC XY:

AN XY:

727222

show subpopulations

Gnomad4 AFR exome

AF:

0.00

Gnomad4 AMR exome

AF:

0.0000224

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:

0.00

Gnomad4 OTH exome

AF:

0.00

GnomAD4 genome

Cov.:

Bravo

AF:

0.00000756

ClinVar

Significance: Uncertain significance

Submissions summary: Uncertain:1

Revision: criteria provided, single submitter

LINK: link

Submissions by phenotype

not specified

Uncertain:1

Uncertain significance, criteria provided, single submitter

clinical testing

Ambry Genetics

Oct 01, 2024

The c.613C>A (p.Q205K) alteration is located in exon 5 (coding exon 5) of the CHRNA5 gene. This alteration results from a C to A substitution at nucleotide position 613, causing the glutamine (Q) at amino acid position 205 to be replaced by a lysine (K). 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

Benign

0.061

BayesDel_addAF

Benign

-0.14

BayesDel_noAF

Benign

-0.35

CADD

Benign

DANN

Benign

0.91

DEOGEN2

Benign

0.074

Eigen

Benign

-0.13

Eigen_PC

Benign

0.017

FATHMM_MKL

Uncertain

0.85

LIST_S2

Benign

0.73

M_CAP

Benign

0.013

MetaRNN

Benign

0.11

MetaSVM

Benign

-0.88

MutationAssessor

Benign

-0.29

PrimateAI

Benign

0.28

PROVEAN

Benign

-0.63

REVEL

Benign

0.14

Sift

Benign

0.27

Sift4G

Benign

0.42

Polyphen

0.41

Vest4

0.19

MutPred

0.46

Loss of stability (P = 0.0081);

MVP

0.82

MPC

0.30

ClinPred

0.23

GERP RS

3.1

Varity_R

0.060

gMVP

0.51

Splicing

Name

Calibrated prediction

Score

Prediction

SpliceAI score (max)

0.060

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

Submissions by phenotype

Computational scores

Splicing

Publications

LitVar

Other links and lift over