rs201510617

Variant summary

Our verdict is Uncertain significance. The variant received 2 ACMG points: 2P and 0B. PP3_Moderate

The NM_001365276.2(TNXB):​c.12224G>T​(p.Arg4075Leu) variant causes a missense change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.0000144 in 1,459,866 control chromosomes in the GnomAD database, with no homozygous occurrence. In-silico tool predicts a pathogenic outcome for this variant. Variant has been reported in ClinVar as Uncertain significance (★). Another variant affecting the same amino acid position, but resulting in a different missense (i.e. R4075H) has been classified as Likely benign.

Frequency

Genomes: 𝑓 0.000023 ( 0 hom., cov: 19)
Exomes 𝑓: 0.000014 ( 0 hom. )

Consequence

TNXB
NM_001365276.2 missense

Scores

11
5
2

Clinical Significance

Uncertain significance criteria provided, single submitter U:1

Conservation

PhyloP100: 3.08

Publications

15 publications found
Variant links:
Genes affected
TNXB (HGNC:11976): (tenascin XB) This gene encodes a member of the tenascin family of extracellular matrix glycoproteins. The tenascins have anti-adhesive effects, as opposed to fibronectin which is adhesive. This protein is thought to function in matrix maturation during wound healing, and its deficiency has been associated with the connective tissue disorder Ehlers-Danlos syndrome. This gene localizes to the major histocompatibility complex (MHC) class III region on chromosome 6. It is one of four genes in this cluster which have been duplicated. The duplicated copy of this gene is incomplete and is a pseudogene which is transcribed but does not encode a protein. The structure of this gene is unusual in that it overlaps the CREBL1 and CYP21A2 genes at its 5' and 3' ends, respectively. Multiple transcript variants encoding different isoforms have been found for this gene. [provided by RefSeq, Jul 2008]
TNXB Gene-Disease associations (from GenCC):
  • Ehlers-Danlos syndrome
    Inheritance: AR Classification: DEFINITIVE Submitted by: G2P
  • Ehlers-Danlos syndrome due to tenascin-X deficiency
    Inheritance: AR Classification: DEFINITIVE, STRONG, SUPPORTIVE Submitted by: Labcorp Genetics (formerly Invitae), Genomics England PanelApp, Illumina, PanelApp Australia, Orphanet
  • familial vesicoureteral reflux
    Inheritance: AD Classification: SUPPORTIVE Submitted by: Orphanet
  • vesicoureteral reflux 8
    Inheritance: AD Classification: LIMITED Submitted by: Labcorp Genetics (formerly Invitae)

Genome browser will be placed here

ACMG classification

Classification was made for transcript

Our verdict: Uncertain_significance. The variant received 2 ACMG points.

PP3
MetaRNN computational evidence supports a deleterious effect, 0.862

Transcripts

RefSeq

Gene Transcript HGVSc HGVSp Effect Exon rank MANE Protein UniProt
TNXBNM_001365276.2 linkc.12224G>T p.Arg4075Leu missense_variant Exon 41 of 44 ENST00000644971.2 NP_001352205.1
TNXBNM_001428335.1 linkc.12965G>T p.Arg4322Leu missense_variant Exon 42 of 45 NP_001415264.1
TNXBNM_019105.8 linkc.12218G>T p.Arg4073Leu missense_variant Exon 41 of 44 NP_061978.6 P22105-1O95680Q9Y464O95681
TNXBNM_032470.4 linkc.1511G>T p.Arg504Leu missense_variant Exon 10 of 13 NP_115859.2 P22105-2Q6IPK3

Ensembl

Gene Transcript HGVSc HGVSp Effect Exon rank TSL MANE Protein Appris UniProt
TNXBENST00000644971.2 linkc.12224G>T p.Arg4075Leu missense_variant Exon 41 of 44 NM_001365276.2 ENSP00000496448.1 P22105-3

Frequencies

GnomAD3 genomes
AF:
0.0000233
AC:
3
AN:
128656
Hom.:
0
Cov.:
19
show subpopulations
Gnomad AFR
AF:
0.0000668
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:
0.0000163
Gnomad OTH
AF:
0.00
GnomAD2 exomes
AF:
0.0000284
AC:
6
AN:
210924
AF XY:
0.0000175
show subpopulations
Gnomad AFR exome
AF:
0.000175
Gnomad AMR exome
AF:
0.00
Gnomad ASJ exome
AF:
0.00
Gnomad EAS exome
AF:
0.00
Gnomad FIN exome
AF:
0.00
Gnomad NFE exome
AF:
0.0000420
Gnomad OTH exome
AF:
0.00
GnomAD4 exome
AF:
0.0000135
AC:
18
AN:
1331210
Hom.:
0
Cov.:
27
AF XY:
0.0000135
AC XY:
9
AN XY:
666306
show subpopulations
African (AFR)
AF:
0.00
AC:
0
AN:
28820
American (AMR)
AF:
0.00
AC:
0
AN:
42612
Ashkenazi Jewish (ASJ)
AF:
0.00
AC:
0
AN:
24560
East Asian (EAS)
AF:
0.00
AC:
0
AN:
37328
South Asian (SAS)
AF:
0.00
AC:
0
AN:
81630
European-Finnish (FIN)
AF:
0.00
AC:
0
AN:
51842
Middle Eastern (MID)
AF:
0.00
AC:
0
AN:
5390
European-Non Finnish (NFE)
AF:
0.0000169
AC:
17
AN:
1003788
Other (OTH)
AF:
0.0000181
AC:
1
AN:
55240
Allele Balance Distribution
Red line indicates average allele balance
Average allele balance: 0.478
Heterozygous variant carriers
0
2
3
5
6
8
0.00
0.20
0.40
0.60
0.80
0.95
Allele balance

Age Distribution

Exome 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
GnomAD4 genome
AF:
0.0000233
AC:
3
AN:
128656
Hom.:
0
Cov.:
19
AF XY:
0.0000159
AC XY:
1
AN XY:
62706
show subpopulations
African (AFR)
AF:
0.0000668
AC:
2
AN:
29944
American (AMR)
AF:
0.00
AC:
0
AN:
13260
Ashkenazi Jewish (ASJ)
AF:
0.00
AC:
0
AN:
3144
East Asian (EAS)
AF:
0.00
AC:
0
AN:
4522
South Asian (SAS)
AF:
0.00
AC:
0
AN:
3736
European-Finnish (FIN)
AF:
0.00
AC:
0
AN:
9838
Middle Eastern (MID)
AF:
0.00
AC:
0
AN:
270
European-Non Finnish (NFE)
AF:
0.0000163
AC:
1
AN:
61346
Other (OTH)
AF:
0.00
AC:
0
AN:
1754
Allele Balance Distribution
Red line indicates average allele balance
Average allele balance: 0.475
Heterozygous variant carriers
0
0
1
1
2
2
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:
0.00
Hom.:
0
ExAC
AF:
0.0000165
AC:
2

ClinVar

Significance: Uncertain significance
Submissions summary: Uncertain:1
Revision: criteria provided, single submitter
LINK: link

Submissions by phenotype

Cardiovascular phenotype Uncertain:1
Jul 09, 2021
Ambry Genetics
Significance:Uncertain significance
Review Status:criteria provided, single submitter
Collection Method:clinical testing

The c.12218G>T (p.R4073L) alteration is located in exon 41 (coding exon 40) of the TNXB gene. This alteration results from a G to T substitution at nucleotide position 12218, causing the arginine (R) at amino acid position 4073 to be replaced by a leucine (L). Based on insufficient or conflicting evidence, the clinical significance of this alteration remains unclear. -

Computational scores

Source: dbNSFP v4.3

Name
Calibrated prediction
Score
Prediction
AlphaMissense
Pathogenic
0.87
BayesDel_addAF
Pathogenic
0.16
D
BayesDel_noAF
Uncertain
0.0
CADD
Pathogenic
29
DANN
Uncertain
1.0
DEOGEN2
Benign
0.36
.;.;.;.;T
Eigen
Pathogenic
0.94
Eigen_PC
Pathogenic
0.81
FATHMM_MKL
Pathogenic
0.98
D
LIST_S2
Uncertain
0.90
.;D;D;D;D
M_CAP
Uncertain
0.12
D
MetaRNN
Pathogenic
0.86
D;D;D;D;D
MetaSVM
Pathogenic
0.97
D
PhyloP100
3.1
PrimateAI
Uncertain
0.55
T
PROVEAN
Pathogenic
-4.8
.;.;D;D;.
REVEL
Pathogenic
0.74
Sift
Pathogenic
0.0
.;.;D;D;.
Sift4G
Pathogenic
0.0010
.;.;D;D;D
Vest4
0.68, 0.84
MVP
0.74
MPC
3.4
ClinPred
1.0
D
GERP RS
4.8
Varity_R
0.73
gMVP
0.95
Mutation Taster
=73/27
polymorphism

Splicing

Name
Calibrated prediction
Score
Prediction
SpliceAI score (max)
0.010
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: rs201510617; hg19: chr6-32010126; API