6-32042509-G-T

Variant names:

Variant summary

Our verdict is Likely benign. The variant received -5 ACMG points: 0P and 5B. BP4_StrongBP7

The NM_001365276.2(TNXB):c.12156C>A(p.Arg4052Arg) variant causes a synonymous change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.0000579 in 1,607,514 control chromosomes in the GnomAD database, including 1 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. Synonymous variant affecting the same amino acid position (i.e. R4052R) has been classified as Likely benign.

Frequency

Genomes: 𝑓 0.00013 ( 1 hom., cov: 20)

Exomes 𝑓: 0.000050 ( 0 hom. )

Consequence

TNXB
NM_001365276.2 synonymous

Scores

Clinical Significance

Not reported in ClinVar

Conservation

PhyloP100: -3.94

Publications

3 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 links:

CYP21A2 (HGNC:2600): (cytochrome P450 family 21 subfamily A member 2) This gene encodes a member of the cytochrome P450 superfamily of enzymes. The cytochrome P450 proteins are monooxygenases which catalyze many reactions involved in drug metabolism and synthesis of cholesterol, steroids and other lipids. This protein localizes to the endoplasmic reticulum and hydroxylates steroids at the 21 position. Its activity is required for the synthesis of steroid hormones including cortisol and aldosterone. Mutations in this gene cause congenital adrenal hyperplasia. A related pseudogene is located near this gene; gene conversion events involving the functional gene and the pseudogene are thought to account for many cases of steroid 21-hydroxylase deficiency. Two transcript variants encoding different isoforms have been found for this gene. [provided by RefSeq, Jul 2008]

CYP21A2 Gene-Disease associations (from GenCC):

classic congenital adrenal hyperplasia due to 21-hydroxylase deficiency
Inheritance: AR Classification: DEFINITIVE, STRONG Submitted by: Labcorp Genetics (formerly Invitae), Myriad Women’s Health, Laboratory for Molecular Medicine
classic congenital adrenal hyperplasia due to 21-hydroxylase deficiency, salt wasting form
Inheritance: AR Classification: SUPPORTIVE Submitted by: Orphanet
classic congenital adrenal hyperplasia due to 21-hydroxylase deficiency, simple virilizing form
Inheritance: AR Classification: SUPPORTIVE Submitted by: Orphanet

CYP21A2 links:

Genome browser will be placed here

ACMG classification

Classification was made for transcript

Our verdict: Likely_benign. The variant received -5 ACMG points.

BP4

Computational evidence support a benign effect (BayesDel_noAF=-0.53).

BP7

Synonymous conserved (PhyloP=-3.94 with no splicing effect.

Variant Effect in Transcripts

ACMG analysis was done for transcript: NM_001365276.2. You can select a different transcript below to see updated ACMG assignments.

RefSeq Transcripts

Gene	Transcript	Tags	HGVSc	HGVSp	Effect	Exon Rank	Protein	UniProt
TNXB	NM_001365276.2	MANE Select	c.12156C>A	p.Arg4052Arg	synonymous	Exon 40 of 44	NP_001352205.1	P22105-3
TNXB	NM_001428335.1		c.12897C>A	p.Arg4299Arg	synonymous	Exon 41 of 45	NP_001415264.1	A0A3B3ISX9
TNXB	NM_019105.8		c.12150C>A	p.Arg4050Arg	synonymous	Exon 40 of 44	NP_061978.6

Ensembl Transcripts

Gene	Transcript	Tags	HGVSc	HGVSp	Effect	Exon Rank	Protein	UniProt
TNXB	ENST00000644971.2	MANE Select	c.12156C>A	p.Arg4052Arg	synonymous	Exon 40 of 44	ENSP00000496448.1	P22105-3
TNXB	ENST00000451343.4	TSL:1	c.1443C>A	p.Arg481Arg	synonymous	Exon 9 of 13	ENSP00000407685.1	P22105-2
TNXB	ENST00000490077.5	TSL:1	n.1983C>A		non_coding_transcript_exon	Exon 10 of 14

Frequencies

GnomAD3 genomes

AF:

0.000132

AC:

AN:

151672

Hom.:

Cov.:

show subpopulations

Gnomad AFR

AF:

0.00

Gnomad AMI

AF:

0.00

Gnomad AMR

AF:

0.00

Gnomad ASJ

AF:

0.00

Gnomad EAS

AF:

0.00355

Gnomad SAS

AF:

0.00

Gnomad FIN

AF:

0.000188

Gnomad MID

AF:

0.00

Gnomad NFE

AF:

0.00

Gnomad OTH

AF:

0.00

GnomAD2 exomes

AF:

0.000269

AC:

AN:

245372

AF XY:

0.000226

show subpopulations

Gnomad AFR exome

AF:

0.00

Gnomad AMR exome

AF:

0.00

Gnomad ASJ exome

AF:

0.00

Gnomad EAS exome

AF:

0.00355

Gnomad FIN exome

AF:

0.0000927

Gnomad NFE exome

AF:

0.00

Gnomad OTH exome

AF:

0.00

GnomAD4 exome

AF:

0.0000501

AC:

AN:

1455722

Hom.:

Cov.:

AF XY:

0.0000345

AC XY:

AN XY:

724300

show subpopulations

African (AFR)

AF:

0.00

AC:

AN:

33386

American (AMR)

AF:

0.00

AC:

AN:

44188

Ashkenazi Jewish (ASJ)

AF:

0.00

AC:

AN:

25992

East Asian (EAS)

AF:

0.00169

AC:

AN:

39152

South Asian (SAS)

AF:

0.00

AC:

AN:

85904

European-Finnish (FIN)

AF:

0.0000381

AC:

AN:

52446

Middle Eastern (MID)

AF:

0.00

AC:

AN:

5620

European-Non Finnish (NFE)

AF:

0.00

AC:

AN:

1108900

Other (OTH)

AF:

0.0000831

AC:

AN:

60134

Allele Balance Distribution

Red line indicates average allele balance

Average allele balance: 0.414

Heterozygous variant carriers

0.00

0.20

0.40

0.60

0.80

0.95

Allele balance

Age Distribution

Exome Het

Variant carriers

<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:

0.000132

AC:

AN:

151792

Hom.:

Cov.:

AF XY:

0.000202

AC XY:

AN XY:

74168

show subpopulations

African (AFR)

AF:

0.00

AC:

AN:

41402

American (AMR)

AF:

0.00

AC:

AN:

15256

Ashkenazi Jewish (ASJ)

AF:

0.00

AC:

AN:

3466

East Asian (EAS)

AF:

0.00355

AC:

AN:

5064

South Asian (SAS)

AF:

0.00

AC:

AN:

4774

European-Finnish (FIN)

AF:

0.000188

AC:

AN:

10614

Middle Eastern (MID)

AF:

0.00

AC:

AN:

288

European-Non Finnish (NFE)

AF:

0.00

AC:

AN:

67914

Other (OTH)

AF:

0.00

AC:

AN:

2102

Allele Balance Distribution

Red line indicates average allele balance

Average allele balance: 0.433

Heterozygous variant carriers

0.00

0.20

0.40

0.60

0.80

0.95

Allele balance

Age Distribution

Genome Het

Genome Hom

Variant carriers

<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.:

ClinVar

Not reported in ClinVar

Computational scores

Source: dbNSFP v4.9

Name

Calibrated prediction

Score

Prediction

BayesDel_noAF

Benign

-0.53

CADD

Benign

3.4

(source)

DANN

Benign

0.87

PhyloP100

-3.9

RBP_binding_hub_radar

0.0

RBP_regulation_power_radar

1.7

Mutation Taster

=100/0

polymorphism

(source)

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

You must be logged in to view publications. This limit was set because tens of millions (!) of queries from AI bots are generated daily.

Variant summary

Frequency

Consequence

Scores

Clinical Significance

Conservation

Publications

ACMG classification

Variant Effect in Transcripts

RefSeq Transcripts

Ensembl Transcripts

Frequencies

Age Distribution

Age Distribution

ClinVar

Computational scores

Splicing

Publications

Other links and lift over