chr17-75726990-G-A

Position:

• chr17-75726990-G-A

Variant summary

Our verdict is Benign. Variant got -14 ACMG points: 0P and 14B. BP4_Strong BP6_Moderate BS1 BS2

The NM_000213.5(ITGB4):​c.80-205G>A variant causes a intron change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.00392 in 151,026 control chromosomes in the GnomAD database, including 2 homozygotes. In-silico tool predicts a benign outcome for this variant. Variant has been reported in ClinVar as Likely benign (★).

• Frequency: Genomes: 𝑓 0.0039 (2 hom., cov: 32)
• Consequence: ITGB4 NM_000213.5 intron
• Clinical Significance: Likely benign criteria provided, single submitter B:1
• Conservation: PhyloP100: -1.94

Genes affected

ITGB4 (HGNC:6158): (integrin subunit beta 4) Integrins are heterodimers comprised of alpha and beta subunits, that are noncovalently associated transmembrane glycoprotein receptors. Different combinations of alpha and beta polypeptides form complexes that vary in their ligand-binding specificities. Integrins mediate cell-matrix or cell-cell adhesion, and transduced signals that regulate gene expression and cell growth. This gene encodes the integrin beta 4 subunit, a receptor for the laminins. This subunit tends to associate with alpha 6 subunit and is likely to play a pivotal role in the biology of invasive carcinoma. Mutations in this gene are associated with epidermolysis bullosa with pyloric atresia. Multiple alternatively spliced transcript variants encoding distinct isoforms have been found for this gene. [provided by RefSeq, Jul 2008]

ITGB4 (HGNC:):

ACMG classification

Verdict is Benign. Variant got -14 ACMG points.

• BP4: Computational evidence support a benign effect (BayesDel_noAF=-1.0).
• BP6: Variant 17-75726990-G-A is Benign according to our data. Variant chr17-75726990-G-A is described in ClinVar as [Likely_benign]. Clinvar id is 1213467.Status of the report is criteria_provided_single_submitter, 1 stars.
• BS1: Variant frequency is greater than expected in population nfe. gnomad4 allele frequency = 0.00392 (592/151026) while in subpopulation NFE AF= 0.00557 (377/67716). AF 95% confidence interval is 0.0051. There are 2 homozygotes in gnomad4. There are 305 alleles in male gnomad4 subpopulation. Median coverage is 32. This position pass quality control queck.
• BS2: High Homozygotes in GnomAd4 at 2 AR gene

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	MANE	Protein	UniProt
ITGB4	NM_000213.5	c.80-205G>A		intron_variant		ENST00000200181.8	NP_000204.3

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	TSL	MANE	Protein	Appris	UniProt
ITGB4	ENST00000200181.8	c.80-205G>A		intron_variant		1	NM_000213.5	ENSP00000200181.3

Frequencies

GnomAD3 genomes AF: 0.00392 AC: 592 AN: 150908 Hom.: 2 Cov.: 32

Gnomad AFR AF: 0.000976

Gnomad AMI AF: 0.0111

Gnomad AMR AF: 0.000989

Gnomad ASJ AF: 0.00

Gnomad EAS AF: 0.00

Gnomad SAS AF: 0.00126

Gnomad FIN AF: 0.0132

Gnomad MID AF: 0.00325

Gnomad NFE AF: 0.00557

Gnomad OTH AF: 0.00194

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

GnomAD4 genome AF: 0.00392 AC: 592 AN: 151026 Hom.: 2 Cov.: 32 AF XY: 0.00413 AC XY: 305 AN XY: 73782

Gnomad4 AFR AF: 0.000973

Gnomad4 AMR AF: 0.000988

Gnomad4 ASJ AF: 0.00

Gnomad4 EAS AF: 0.00

Gnomad4 SAS AF: 0.00126

Gnomad4 FIN AF: 0.0132

Gnomad4 NFE AF: 0.00557

Gnomad4 OTH AF: 0.00192

Alfa AF: 0.00461 Hom.: 1

Bravo AF: 0.00310

ClinVar

Significance: Likely benign

Submissions summary: Benign:1

Revision: criteria provided, single submitter

Submissions by phenotype

not provided Benign:1

Likely benign, criteria provided, single submitter

clinical testing

GeneDx

Mar 09, 2019

- -

Computational scores

Source: dbNSFP v4.3

Name	Calibrated prediction	Score	Prediction
BayesDel_noAF	Benign	-1.0
CADD	Benign	0.27
DANN	Benign	0.60

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: rs151317053; hg19: chr17-73723070;