Variant 1-175079667-C-G details in Genebe, Genetics Data Aggregator

Variant summary

Our verdict is Uncertain significance. Variant got 4 ACMG points: 4P and 0B. PM2PP3_Moderate

The NM_022093.2(TNN):c.744C>G(p.Cys248Trp) variant causes a missense change involving the alteration of a non-conserved nucleotide. The variant was absent in control chromosomes in GnomAD project. In-silico tool predicts a pathogenic outcome for this variant. Variant has been reported in ClinVar as Uncertain significance (★).

Frequency

Genomes: not found (cov: 33)

Exomes 𝑓: 0.0000014 ( 0 hom. )

Failed GnomAD Quality Control

Consequence

TNN
NM_022093.2 missense

Scores

Clinical Significance

Uncertain significance criteria provided, single submitter U:1

Conservation

PhyloP100: -0.334

Variant links:

Genes affected

TNN (HGNC:22942): (tenascin N) Predicted to enable integrin binding activity. Predicted to be involved in several processes, including generation of neurons; negative regulation of canonical Wnt signaling pathway involved in osteoblast differentiation; and negative regulation of osteoblast differentiation. Predicted to act upstream of or within axonogenesis. Predicted to be located in extracellular matrix and neuron projection. Predicted to be active in collagen-containing extracellular matrix and extracellular space. [provided by Alliance of Genome Resources, Apr 2022]

TNN links:

Genome browser will be placed here

ACMG classification

Classification made for transcript

Verdict is Uncertain_significance. Variant got 4 ACMG points.

PM2

Very rare variant in population databases, with high coverage;

PP3

MetaRNN computational evidence supports a deleterious effect, 0.853

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	MANE
TNN	NM_022093.2 linkuse as main transcript	c.744C>G	p.Cys248Trp	missense_variant	3/19	ENST00000239462.9
TNN	XM_017002048.2 linkuse as main transcript	c.798C>G	p.Cys266Trp	missense_variant	3/19
TNN	XM_017002049.2 linkuse as main transcript	c.798C>G	p.Cys266Trp	missense_variant	3/18

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	TSL	MANE	Appris	UniProt
TNN	ENST00000239462.9 linkuse as main transcript	c.744C>G	p.Cys248Trp	missense_variant	3/19	2	NM_022093.2	P1
TNN	ENST00000621086.1 linkuse as main transcript	c.744C>G	p.Cys248Trp	missense_variant	2/16	5

Frequencies

GnomAD3 genomes

Cov.:

GnomAD3 exomes

AF:

0.00000427

AC:

AN:

234390

Hom.:

AF XY:

0.00000776

AC XY:

AN XY:

128806

show subpopulations

Gnomad AFR exome

AF:

0.00

Gnomad AMR exome

AF:

0.0000295

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

Data not reliable, filtered out with message: AS_VQSR

AF:

0.00000137

AC:

AN:

1456432

Hom.:

Cov.:

AF XY:

0.00000276

AC XY:

AN XY:

724170

show subpopulations

Gnomad4 AFR exome

AF:

0.00

Gnomad4 AMR exome

AF:

0.0000450

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:

0.00

Gnomad4 OTH exome

AF:

0.00

GnomAD4 genome

Cov.:

Bravo

AF:

0.00000378

ExAC

AF:

0.00000830

AC:

ClinVar

Significance: Uncertain significance

Submissions summary: Uncertain:1

Revision: criteria provided, single submitter

LINK: link

Submissions by phenotype

not specified

Uncertain:1

Uncertain significance, criteria provided, single submitter

clinical testing

Ambry Genetics

Apr 22, 2022

The c.744C>G (p.C248W) alteration is located in exon 3 (coding exon 2) of the TNN gene. This alteration results from a C to G substitution at nucleotide position 744, causing the cysteine (C) at amino acid position 248 to be replaced by a tryptophan (W). 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

0.99

BayesDel_addAF

Uncertain

0.14

BayesDel_noAF

Uncertain

0.040

CADD

Benign

DANN

Uncertain

0.99

DEOGEN2

Benign

0.23

T;.;.

Eigen

Benign

-0.0097

Eigen_PC

Benign

-0.28

FATHMM_MKL

Benign

0.48

LIST_S2

Uncertain

0.97

D;D;D

M_CAP

Pathogenic

0.31

MetaRNN

Pathogenic

0.85

D;D;D

MetaSVM

Benign

-0.61

MutationAssessor

Pathogenic

4.2

H;.;.

MutationTaster

Benign

1.0

PrimateAI

Uncertain

0.76

PROVEAN

Pathogenic

-10

D;.;.

REVEL

Uncertain

0.44

Sift

Pathogenic

0.0

D;.;.

Sift4G

Pathogenic

0.0

D;D;D

Polyphen

1.0

D;.;.

Vest4

0.93

MutPred

0.70

Loss of disorder (P = 0.0196);Loss of disorder (P = 0.0196);Loss of disorder (P = 0.0196);

MVP

0.39

MPC

0.57

ClinPred

1.0

GERP RS

-2.6

Varity_R

0.95

gMVP

0.97

Splicing

Name

Calibrated prediction

Score

Prediction

SpliceAI score (max)

0.020

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