rs77929806

Positions:

chr12-55707544-C-T

Variant summary

Our verdict is Benign. Variant got -14 ACMG points: 2P and 16B. PM2BP4_StrongBP6_Very_StrongBS1

The NM_002206.3(ITGA7):c.139G>A(p.Glu47Lys) variant causes a missense change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.000144 in 1,613,962 control chromosomes in the GnomAD database, including 1 homozygotes. In-silico tool predicts a benign outcome for this variant. Variant has been reported in ClinVar as Likely benign (★★).

Frequency

Genomes: 𝑓 0.00085 ( 0 hom., cov: 31)

Exomes 𝑓: 0.000070 ( 1 hom. )

Consequence

ITGA7
NM_002206.3 missense

Scores

Clinical Significance

Likely benign criteria provided, multiple submitters, no conflicts B:3

Conservation

PhyloP100: 2.63

Variant links:

Genes affected

ITGA7 (HGNC:6143): (integrin subunit alpha 7) The protein encoded by this gene belongs to the integrin alpha chain family. Integrins are heterodimeric integral membrane proteins composed of an alpha chain and a beta chain. They mediate a wide spectrum of cell-cell and cell-matrix interactions, and thus play a role in cell migration, morphologic development, differentiation, and metastasis. This protein functions as a receptor for the basement membrane protein laminin-1. It is mainly expressed in skeletal and cardiac muscles and may be involved in differentiation and migration processes during myogenesis. Defects in this gene are associated with congenital myopathy. Alternatively spliced transcript variants encoding different isoforms have been noted for this gene. [provided by RefSeq, Feb 2009]

ITGA7 links:

Genome browser will be placed here

ACMG classification

Classification made for transcript

Verdict is Benign. Variant got -14 ACMG points.

PM2

Very rare variant in population databases, with high coverage;

BP4

Computational evidence support a benign effect (MetaRNN=0.015099704).

BP6

Variant 12-55707544-C-T is Benign according to our data. Variant chr12-55707544-C-T is described in ClinVar as [Likely_benign]. Clinvar id is 470563.Status of the report is criteria_provided_multiple_submitters_no_conflicts, 2 stars.

BS1

Variant frequency is greater than expected in population afr. gnomad4 allele frequency = 0.000848 (129/152208) while in subpopulation AFR AF= 0.00303 (126/41532). AF 95% confidence interval is 0.0026. There are 0 homozygotes in gnomad4. There are 67 alleles in male gnomad4 subpopulation. Median coverage is 31. This position pass quality control queck.

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	MANE	Protein	UniProt
ITGA7	NM_002206.3 linkuse as main transcript	c.139G>A	p.Glu47Lys	missense_variant	1/25	ENST00000257879.11	NP_002197.2

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	TSL	MANE	Protein	Appris	UniProt
ITGA7	ENST00000257879.11 linkuse as main transcript	c.139G>A	p.Glu47Lys	missense_variant	1/25	1	NM_002206.3	ENSP00000257879	A1	Q13683-7

Frequencies

GnomAD3 genomes

AF:

0.000848

AC:

129

AN:

152090

Hom.:

Cov.:

show subpopulations

Gnomad AFR

AF:

0.00304

Gnomad AMI

AF:

0.00

Gnomad AMR

AF:

0.000196

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:

0.00

Gnomad OTH

AF:

0.00

GnomAD3 exomes

AF:

0.000196

AC:

AN:

250164

Hom.:

AF XY:

0.000177

AC XY:

AN XY:

135458

show subpopulations

Gnomad AFR exome

AF:

0.00292

Gnomad AMR exome

AF:

0.0000580

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:

0.0000705

AC:

103

AN:

1461754

Hom.:

Cov.:

AF XY:

0.0000715

AC XY:

AN XY:

727190

show subpopulations

Gnomad4 AFR exome

AF:

0.00278

Gnomad4 AMR exome

AF:

0.0000895

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:

8.99e-7

Gnomad4 OTH exome

AF:

0.0000828

GnomAD4 genome

AF:

0.000848

AC:

129

AN:

152208

Hom.:

Cov.:

AF XY:

0.000900

AC XY:

AN XY:

74422

show subpopulations

Gnomad4 AFR

AF:

0.00303

Gnomad4 AMR

AF:

0.000196

Gnomad4 ASJ

AF:

0.00

Gnomad4 EAS

AF:

0.00

Gnomad4 SAS

AF:

0.00

Gnomad4 FIN

AF:

0.00

Gnomad4 NFE

AF:

0.00

Gnomad4 OTH

AF:

0.00

Alfa

AF:

0.000333

Hom.:

Bravo

AF:

0.00102

ESP6500AA

AF:

0.00340

AC:

ESP6500EA

AF:

0.00

AC:

ExAC

AF:

0.000305

AC:

ClinVar

Significance: Likely benign

Submissions summary: Benign:3

Revision: criteria provided, multiple submitters, no conflicts

LINK: link

Submissions by phenotype

ITGA7-related disorder

Benign:1

Likely benign, no assertion criteria provided

clinical testing

PreventionGenetics, part of Exact Sciences

Nov 07, 2022

This variant is classified as likely benign based on ACMG/AMP sequence variant interpretation guidelines (Richards et al. 2015 PMID: 25741868, with internal and published modifications). -

Congenital muscular dystrophy due to integrin alpha-7 deficiency

Benign:1

Likely benign, criteria provided, single submitter

clinical testing

Labcorp Genetics (formerly Invitae), Labcorp

Jan 05, 2024

- -

not provided

Benign:1

Likely benign, criteria provided, single submitter

clinical testing

GeneDx

Jan 03, 2023

See Variant Classification Assertion Criteria. -

Computational scores

Source: dbNSFP v4.3

Name

Calibrated prediction

Score

Prediction

AlphaMissense

Benign

0.11

BayesDel_addAF

Benign

-0.24

BayesDel_noAF

Benign

-0.12

CADD

Uncertain

DANN

Pathogenic

1.0

DEOGEN2

Benign

0.022

.;.;T;T

Eigen

Uncertain

0.37

Eigen_PC

Uncertain

0.37

FATHMM_MKL

Uncertain

0.92

LIST_S2

Uncertain

0.86

D;D;D;D

M_CAP

Pathogenic

0.51

MetaRNN

Benign

0.015

T;T;T;T

MetaSVM

Uncertain

-0.12

MutationAssessor

Uncertain

2.5

M;M;.;M

MutationTaster

Benign

1.0

D;D;D;D;D;D;D;D

PrimateAI

Uncertain

0.70

PROVEAN

Uncertain

-2.7

D;D;D;D

REVEL

Uncertain

0.41

Sift

Benign

0.12

T;T;T;D

Sift4G

Benign

0.31

T;T;T;T

Polyphen

0.99

D;.;.;.

Vest4

0.48

MVP

0.95

MPC

0.68

ClinPred

0.098

GERP RS

4.4

Varity_R

0.32

gMVP

0.54

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

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