17-50056463-G-A

Variant names:

• chr17-50056463-G-A
• rs975509582
• NM_002204.4:c.24G>A

Variant summary

Our verdict is Benign. The variant received -8 ACMG points: 0P and 8B. BP4_Moderate BP6_Moderate BS1

The NM_002204.4(ITGA3):​c.24G>A​(p.Ala8Ala) variant causes a synonymous change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.0000202 in 1,535,818 control chromosomes in the GnomAD database, with no homozygous occurrence. In-silico tool predicts a benign outcome for this variant. Variant has been reported in ClinVar as Likely benign (★).

• Frequency:
  • Genomes: 𝑓 0.000072 (0 hom., cov: 32)
  • Exomes 𝑓: 0.000014 (0 hom.)
• Consequence: ITGA3 NM_002204.4 synonymous
• Clinical Significance: Likely benign criteria provided, single submitter B:1
• Conservation: PhyloP100: -0.189
• Publications: 1 publications found

Genes affected

ITGA3 (HGNC:6139): (integrin subunit alpha 3) The gene encodes a member of the integrin alpha chain family of proteins. Integrins are heterodimeric integral membrane proteins composed of an alpha chain and a beta chain that function as cell surface adhesion molecules. The encoded preproprotein is proteolytically processed to generate light and heavy chains that comprise the alpha 3 subunit. This subunit joins with a beta 1 subunit to form an integrin that interacts with extracellular matrix proteins including members of the laminin family. Expression of this gene may be correlated with breast cancer metastasis. [provided by RefSeq, Oct 2015]

ITGA3 Gene-Disease associations (from GenCC):

• epidermolysis bullosa, junctional 7, with interstitial lung disease and nephrotic syndrome

  Inheritance: AR Classification: DEFINITIVE, STRONG, SUPPORTIVE Submitted by: G2P, Labcorp Genetics (formerly Invitae), Orphanet, Ambry Genetics, Genomics England PanelApp, ClinGen

ACMG classification

Our verdict: Benign. The variant received -8 ACMG points.

• BP4: Computational evidence support a benign effect (BayesDel_noAF=-0.44).
• BP6: Variant 17-50056463-G-A is Benign according to our data. Variant chr17-50056463-G-A is described in ClinVar as Likely_benign. ClinVar VariationId is 2855682.Status of the report is criteria_provided_single_submitter, 1 stars.
• BS1: Variant frequency is greater than expected in population afr. GnomAdExome4 allele frequency = 0.0000145 (20/1383482) while in subpopulation AFR AF = 0.00047 (14/29774). AF 95% confidence interval is 0.000283. There are 0 homozygotes in GnomAdExome4. There are 5 alleles in the male GnomAdExome4 subpopulation. Median coverage is 31. This position passed quality control check.

Variant Effect in Transcripts

ACMG analysis was done for transcript: NM_002204.4. 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
	ITGA3	NM_002204.4	MANE Select	c.24G>A	p.Ala8Ala	synonymous	Exon 1 of 26	NP_002195.1	P26006-2

Ensembl Transcripts

Sel.	Gene	Transcript	Tags	HGVSc	HGVSp	Effect	Exon Rank	Protein	UniProt
	ITGA3	ENST00000320031.13	TSL:1 MANE Select	c.24G>A	p.Ala8Ala	synonymous	Exon 1 of 26	ENSP00000315190.8	P26006-2
	ITGA3	ENST00000007722.11	TSL:5	c.24G>A	p.Ala8Ala	synonymous	Exon 1 of 25	ENSP00000007722.7	P26006-1
	ITGA3	ENST00000876971.1		c.24G>A	p.Ala8Ala	synonymous	Exon 2 of 27	ENSP00000547030.1

Frequencies

GnomAD3 genomes AF: 0.0000657 AC: 10 AN: 152222 Hom.: 0 Cov.: 32

Gnomad AFR AF: 0.000217

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: 0.0000147

Gnomad OTH AF: 0.00

GnomAD2 exomes AF: 0.0000536 AC: 7 AN: 130500 AF XY: 0.0000421

Gnomad AFR exome AF: 0.000886

Gnomad AMR exome AF: 0.000130

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 AF: 0.0000145 AC: 20 AN: 1383482 Hom.: 0 Cov.: 31 AF XY: 0.00000734 AC XY: 5 AN XY: 681658

African (AFR) AF: 0.000470 AC: 14 AN: 29774

American (AMR) AF: 0.000116 AC: 4 AN: 34624

Ashkenazi Jewish (ASJ) AF: 0.00 AC: 0 AN: 24672

East Asian (EAS) AF: 0.00 AC: 0 AN: 34222

South Asian (SAS) AF: 0.00 AC: 0 AN: 77710

European-Finnish (FIN) AF: 0.00 AC: 0 AN: 47570

Middle Eastern (MID) AF: 0.00 AC: 0 AN: 4516

European-Non Finnish (NFE) AF: 0.00 AC: 0 AN: 1073144

Other (OTH) AF: 0.0000349 AC: 2 AN: 57250

GnomAD4 genome AF: 0.0000722 AC: 11 AN: 152336 Hom.: 0 Cov.: 32 AF XY: 0.0000537 AC XY: 4 AN XY: 74496

African (AFR) AF: 0.000240 AC: 10 AN: 41580

American (AMR) AF: 0.00 AC: 0 AN: 15310

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

East Asian (EAS) AF: 0.00 AC: 0 AN: 5168

South Asian (SAS) AF: 0.00 AC: 0 AN: 4834

European-Finnish (FIN) AF: 0.00 AC: 0 AN: 10630

Middle Eastern (MID) AF: 0.00 AC: 0 AN: 292

European-Non Finnish (NFE) AF: 0.0000147 AC: 1 AN: 68022

Other (OTH) AF: 0.00 AC: 0 AN: 2116

Alfa AF: 0.00 Hom.: 0

Bravo AF: 0.000117

ClinVar

ClinVar submissions

Significance: Likely benign

Revision: criteria provided, single submitter

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

Computational scores

Source: dbNSFP v4.9

Name	Calibrated prediction	Score	Prediction
BayesDel_noAF	Benign	-0.44
CADD	Benign	8.9
DANN	Benign	0.96
PhyloP100		-0.19
PromoterAI		0.0062	Neutral

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: rs975509582; hg19: chr17-48133827;