rs479385

Variant names:

• chr15-78572384-T-A
• rs479385
• NM_000745.4:c.106+6559T>A

Variant summary

Our verdict is Benign. The variant received -12 ACMG points: 0P and 12B. BP4_Strong BS1 BS2

The NM_000745.4(CHRNA5):​c.106+6559T>A variant causes a intron change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.00961 in 152,310 control chromosomes in the GnomAD database, including 26 homozygotes. In-silico tool predicts a benign outcome for this variant. No clinical diagnostic laboratories have submitted clinical-significance assessments for this variant to ClinVar.

• Frequency: Genomes: 𝑓 0.0096 (26 hom., cov: 32)
• Consequence: CHRNA5 NM_000745.4 intron
• Clinical Significance: Not reported in ClinVar
• Conservation: PhyloP100: -0.962
• Publications: 1 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]

ACMG classification

Our verdict: Benign. The variant received -12 ACMG points.

• BP4: Computational evidence support a benign effect (BayesDel_noAF=-0.89).
• BS1: Variant frequency is greater than expected in population afr. GnomAd4 allele frequency = 0.00961 (1463/152310) while in subpopulation AFR AF = 0.0322 (1339/41564). AF 95% confidence interval is 0.0308. There are 26 homozygotes in GnomAd4. There are 708 alleles in the male GnomAd4 subpopulation. Median coverage is 32. This position passed quality control check.
• BS2: High Homozygotes in GnomAd4 at 26 AR gene

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	MANE	Protein	UniProt
CHRNA5	NM_000745.4	c.106+6559T>A		intron_variant	Intron 1 of 5	ENST00000299565.9	NP_000736.2

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	TSL	MANE	Protein	Appris	UniProt
CHRNA5	ENST00000299565.9	c.106+6559T>A		intron_variant	Intron 1 of 5	1	NM_000745.4	ENSP00000299565.5
CHRNA5	ENST00000559554.5	c.106+6559T>A		intron_variant	Intron 1 of 5	3		ENSP00000453519.1

Frequencies

GnomAD3 genomes AF: 0.00961 AC: 1463 AN: 152192 Hom.: 26 Cov.: 32

Gnomad AFR AF: 0.0323

Gnomad AMI AF: 0.00

Gnomad AMR AF: 0.00524

Gnomad ASJ AF: 0.00

Gnomad EAS AF: 0.00

Gnomad SAS AF: 0.00

Gnomad FIN AF: 0.00

Gnomad MID AF: 0.00316

Gnomad NFE AF: 0.000323

Gnomad OTH AF: 0.0100

We have no GnomAD4 exomes data on this position. Probably position not covered by the project.

GnomAD4 genome AF: 0.00961 AC: 1463 AN: 152310 Hom.: 26 Cov.: 32 AF XY: 0.00951 AC XY: 708 AN XY: 74472

African (AFR) AF: 0.0322 AC: 1339 AN: 41564

American (AMR) AF: 0.00523 AC: 80 AN: 15290

Ashkenazi Jewish (ASJ) AF: 0.00 AC: 0 AN: 3472

East Asian (EAS) AF: 0.00 AC: 0 AN: 5192

South Asian (SAS) AF: 0.00 AC: 0 AN: 4824

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

Middle Eastern (MID) AF: 0.00340 AC: 1 AN: 294

European-Non Finnish (NFE) AF: 0.000323 AC: 22 AN: 68030

Other (OTH) AF: 0.00993 AC: 21 AN: 2114

Alfa AF: 0.00693 Hom.: 1

Bravo AF: 0.0109

ClinVar

Not reported in ClinVar

Computational scores

Source: dbNSFP v4.3

Name	Calibrated prediction	Score	Prediction
BayesDel_noAF	Benign	-0.89
CADD	Benign	0.20
DANN	Benign	0.67
PhyloP100		-0.96
Mutation Taster		=100/0	polymorphism (auto)

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

Other links and lift over

dbSNP: rs479385; hg19: chr15-78864726;