12-55701032-C-T

Variant summary

Our verdict is Benign. The variant received -14 ACMG points: 0P and 14B. BP4_StrongBP6BP7BS1BS2

The NM_002206.3(ITGA7):​c.537G>A​(p.Gly179Gly) variant causes a synonymous change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.000817 in 1,614,236 control chromosomes in the GnomAD database, including 3 homozygotes. In-silico tool predicts a benign outcome for this variant. Variant has been reported in ClinVar as Conflicting classifications of pathogenicity (no stars).

Frequency

Genomes: 𝑓 0.00067 ( 0 hom., cov: 33)
Exomes 𝑓: 0.00083 ( 3 hom. )

Consequence

ITGA7
NM_002206.3 synonymous

Scores

2

Clinical Significance

Conflicting classifications of pathogenicity criteria provided, conflicting classifications U:1B:3

Conservation

PhyloP100: -1.30

Publications

0 publications found
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 Gene-Disease associations (from GenCC):
  • congenital muscular dystrophy due to integrin alpha-7 deficiency
    Inheritance: AR Classification: STRONG, MODERATE, SUPPORTIVE Submitted by: G2P, Labcorp Genetics (formerly Invitae), Orphanet
  • congenital fiber-type disproportion myopathy
    Inheritance: AD Classification: SUPPORTIVE Submitted by: Orphanet

Genome browser will be placed here

ACMG classification

Classification was made for transcript

Our verdict: Benign. The variant received -14 ACMG points.

BP4
Computational evidence support a benign effect (BayesDel_noAF=-0.51).
BP6
Variant 12-55701032-C-T is Benign according to our data. Variant chr12-55701032-C-T is described in ClinVar as Conflicting_classifications_of_pathogenicity. ClinVar VariationId is 287417.
BP7
Synonymous conserved (PhyloP=-1.3 with no splicing effect.
BS1
Variant frequency is greater than expected in population amr. GnomAd4 allele frequency = 0.00067 (102/152342) while in subpopulation AMR AF = 0.00131 (20/15310). AF 95% confidence interval is 0.000865. There are 0 homozygotes in GnomAd4. There are 54 alleles in the male GnomAd4 subpopulation. Median coverage is 33. This position passed quality control check.
BS2
High Homozygotes in GnomAdExome4 at 3 AR,AD gene

Transcripts

RefSeq

Gene Transcript HGVSc HGVSp Effect Exon rank MANE Protein UniProt
ITGA7NM_002206.3 linkc.537G>A p.Gly179Gly synonymous_variant Exon 4 of 25 ENST00000257879.11 NP_002197.2 Q13683-7Q4LE35

Ensembl

Gene Transcript HGVSc HGVSp Effect Exon rank TSL MANE Protein Appris UniProt
ITGA7ENST00000257879.11 linkc.537G>A p.Gly179Gly synonymous_variant Exon 4 of 25 1 NM_002206.3 ENSP00000257879.7 Q13683-7

Frequencies

GnomAD3 genomes
AF:
0.000670
AC:
102
AN:
152224
Hom.:
0
Cov.:
33
show subpopulations
Gnomad AFR
AF:
0.000217
Gnomad AMI
AF:
0.00
Gnomad AMR
AF:
0.00131
Gnomad ASJ
AF:
0.000288
Gnomad EAS
AF:
0.00
Gnomad SAS
AF:
0.000414
Gnomad FIN
AF:
0.000188
Gnomad MID
AF:
0.00
Gnomad NFE
AF:
0.000970
Gnomad OTH
AF:
0.000956
GnomAD2 exomes
AF:
0.000756
AC:
190
AN:
251476
AF XY:
0.000736
show subpopulations
Gnomad AFR exome
AF:
0.0000615
Gnomad AMR exome
AF:
0.000636
Gnomad ASJ exome
AF:
0.000397
Gnomad EAS exome
AF:
0.00
Gnomad FIN exome
AF:
0.0000924
Gnomad NFE exome
AF:
0.00117
Gnomad OTH exome
AF:
0.00114
GnomAD4 exome
AF:
0.000832
AC:
1217
AN:
1461894
Hom.:
3
Cov.:
32
AF XY:
0.000870
AC XY:
633
AN XY:
727248
show subpopulations
African (AFR)
AF:
0.000269
AC:
9
AN:
33480
American (AMR)
AF:
0.000514
AC:
23
AN:
44724
Ashkenazi Jewish (ASJ)
AF:
0.000191
AC:
5
AN:
26136
East Asian (EAS)
AF:
0.00
AC:
0
AN:
39700
South Asian (SAS)
AF:
0.000614
AC:
53
AN:
86258
European-Finnish (FIN)
AF:
0.000150
AC:
8
AN:
53420
Middle Eastern (MID)
AF:
0.00416
AC:
24
AN:
5768
European-Non Finnish (NFE)
AF:
0.000924
AC:
1027
AN:
1112012
Other (OTH)
AF:
0.00113
AC:
68
AN:
60396
Allele Balance Distribution
Red line indicates average allele balance
Average allele balance: 0.474
Heterozygous variant carriers
0
81
162
243
324
405
0.00
0.20
0.40
0.60
0.80
0.95
Allele balance

Age Distribution

Exome Het
Variant carriers
0
34
68
102
136
170
<30
30-35
35-40
40-45
45-50
50-55
55-60
60-65
65-70
70-75
75-80
>80
Age
GnomAD4 genome
AF:
0.000670
AC:
102
AN:
152342
Hom.:
0
Cov.:
33
AF XY:
0.000725
AC XY:
54
AN XY:
74498
show subpopulations
African (AFR)
AF:
0.000216
AC:
9
AN:
41574
American (AMR)
AF:
0.00131
AC:
20
AN:
15310
Ashkenazi Jewish (ASJ)
AF:
0.000288
AC:
1
AN:
3468
East Asian (EAS)
AF:
0.00
AC:
0
AN:
5182
South Asian (SAS)
AF:
0.000414
AC:
2
AN:
4830
European-Finnish (FIN)
AF:
0.000188
AC:
2
AN:
10630
Middle Eastern (MID)
AF:
0.00
AC:
0
AN:
294
European-Non Finnish (NFE)
AF:
0.000970
AC:
66
AN:
68030
Other (OTH)
AF:
0.000946
AC:
2
AN:
2114
Allele Balance Distribution
Red line indicates average allele balance
Average allele balance: 0.499
Heterozygous variant carriers
0
5
11
16
22
27
0.00
0.20
0.40
0.60
0.80
0.95
Allele balance

Age Distribution

Genome Het
Variant carriers
0
2
4
6
8
10
<30
30-35
35-40
40-45
45-50
50-55
55-60
60-65
65-70
70-75
75-80
>80
Age
Alfa
AF:
0.000709
Hom.:
0
Bravo
AF:
0.000661
Asia WGS
AF:
0.000577
AC:
2
AN:
3478
EpiCase
AF:
0.00202
EpiControl
AF:
0.00101

ClinVar

Significance: Conflicting classifications of pathogenicity
Submissions summary: Uncertain:1Benign:3
Revision: criteria provided, conflicting classifications
LINK: link

Submissions by phenotype

not provided Uncertain:1Benign:2
Jul 10, 2020
GeneDx
Significance:Likely benign
Review Status:criteria provided, single submitter
Collection Method:clinical testing

- -

Nov 01, 2023
CeGaT Center for Human Genetics Tuebingen
Significance:Likely benign
Review Status:criteria provided, single submitter
Collection Method:clinical testing

ITGA7: BP4, BP7 -

Aug 15, 2018
Eurofins Ntd Llc (ga)
Significance:Uncertain significance
Review Status:criteria provided, single submitter
Collection Method:clinical testing

- -

Congenital muscular dystrophy due to integrin alpha-7 deficiency Benign:1
Jan 29, 2025
Labcorp Genetics (formerly Invitae), Labcorp
Significance:Likely benign
Review Status:criteria provided, single submitter
Collection Method:clinical testing

- -

Computational scores

Source: dbNSFP v4.3

Name
Calibrated prediction
Score
Prediction
BayesDel_noAF
Benign
-0.51
CADD
Benign
12
DANN
Benign
0.86
PhyloP100
-1.3
Mutation Taster
=99/1
polymorphism

Splicing

Name
Calibrated prediction
Score
Prediction
SpliceAI score (max)
0.050
Details are displayed if max score is > 0.2

Find out detailed SpliceAI scores and Pangolin per-transcript scores at spliceailookup.broadinstitute.org

Publications

Other links and lift over

dbSNP: rs145463677; hg19: chr12-56094816; API