rs3756541

chr5-53007515-G-Achr5-53007515-G-T

Variant summary

Our verdict is Benign. Variant got -12 ACMG points: 0P and 12B. BP4_Strong BA1

The NM_002203.4(ITGA2):c.64+17983G>A variant causes a intron change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.252 in 146,930 control chromosomes in the GnomAD database, including 5,407 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 0.25 (5407 hom., cov: 30)
• Consequence: ITGA2 NM_002203.4 intron
• Clinical Significance: Not reported in ClinVar
• Conservation: PhyloP100: 0.229

Genes affected

ITGA2 (HGNC:6137): (integrin subunit alpha 2) This gene encodes the alpha subunit of a transmembrane receptor for collagens and related proteins. The encoded protein forms a heterodimer with a beta subunit and mediates the adhesion of platelets and other cell types to the extracellular matrix. Loss of the encoded protein is associated with bleeding disorder platelet-type 9. Antibodies against this protein are found in several immune disorders, including neonatal alloimmune thrombocytopenia. This gene is located adjacent to a related alpha subunit gene. Alternative splicing results in multiple transcript variants. [provided by RefSeq, Aug 2012]

ACMG classification

Verdict is Benign. Variant got -12 ACMG points.

• BP4: Computational evidence support a benign effect (BayesDel_noAF=-0.83).
• BA1: GnomAd4 highest subpopulation (NFE) allele frequency at 95% confidence interval = 0.329 is higher than 0.05.

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	MANE	UniProt
ITGA2	NM_002203.4	c.64+17983G>A		intron_variant		ENST00000296585.10

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	TSL	MANE	Appris	UniProt
ITGA2	ENST00000296585.10	c.64+17983G>A		intron_variant		1	NM_002203.4	P1

Frequencies

GnomAD3 genomes AF: 0.253 AC: 37079 AN: 146842 Hom.: 5406 Cov.: 30

Gnomad AFR AF: 0.0863

Gnomad AMI AF: 0.287

Gnomad AMR AF: 0.277

Gnomad ASJ AF: 0.284

Gnomad EAS AF: 0.172

Gnomad SAS AF: 0.326

Gnomad FIN AF: 0.331

Gnomad MID AF: 0.289

Gnomad NFE AF: 0.333

Gnomad OTH AF: 0.260

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

GnomAD4 genome AF: 0.252 AC: 37086 AN: 146930 Hom.: 5407 Cov.: 30 AF XY: 0.254 AC XY: 18197 AN XY: 71508

Gnomad4 AFR AF: 0.0862

Gnomad4 AMR AF: 0.278

Gnomad4 ASJ AF: 0.284

Gnomad4 EAS AF: 0.172

Gnomad4 SAS AF: 0.326

Gnomad4 FIN AF: 0.331

Gnomad4 NFE AF: 0.333

Gnomad4 OTH AF: 0.259

Alfa AF: 0.00450 Hom.: 11

Bravo AF: 0.232

ClinVar

Not reported in ClinVar

Computational scores

Source: dbNSFP v4.3

Name	Calibrated prediction	Score	Prediction
BayesDel_noAF	Benign	-0.83
Cadd	Benign	0.72
Dann	Benign	0.53

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

Publications

LitVar

Other links and lift over

dbSNP: rs3756541; hg19: chr5-52303345;