9-115086841-T-C

Position:

• chr9-115086841-T-C

Variant summary

Our verdict is Uncertain significance. Variant got 0 ACMG points: 2P and 2B. PM2 BP4_Moderate

The NM_002160.4(TNC):​c.890A>G​(p.Asn297Ser) 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 benign outcome for this variant. 13/21 in silico tools predict a benign outcome for this variant. Variant has been reported in ClinVar as Uncertain significance (★).

• Frequency: Genomes: not found (cov: 34)
• Consequence: TNC NM_002160.4 missense
• Clinical Significance: Uncertain significance criteria provided, single submitter U:2
• Conservation: PhyloP100: 1.06

Genes affected

TNC (HGNC:5318): (tenascin C) This gene encodes an extracellular matrix protein with a spatially and temporally restricted tissue distribution. This protein is homohexameric with disulfide-linked subunits, and contains multiple EGF-like and fibronectin type-III domains. It is implicated in guidance of migrating neurons as well as axons during development, synaptic plasticity, and neuronal regeneration. [provided by RefSeq, Jul 2011]

DELEC1 (HGNC:23658): (deleted in esophageal cancer 1) The function of this gene is not known. This gene is located in a region commonly deleted in esophageal squamous cell carcinomas. Gene expression is reduced or absent in these carcinomas and thus this is a candidate tumor suppressor gene for esophageal squamous cell carcinomas. [provided by RefSeq, Jul 2008]

ACMG classification

Verdict is Uncertain_significance. Variant got 0 ACMG points.

• PM2: Very rare variant in population databases, with high coverage
• BP4: Computational evidence support a benign effect (MetaRNN=0.18973446).

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	MANE	UniProt
TNC	NM_002160.4	c.890A>G	p.Asn297Ser	missense_variant	3/28	ENST00000350763.9

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	TSL	MANE	Appris	UniProt
TNC	ENST00000350763.9	c.890A>G	p.Asn297Ser	missense_variant	3/28	1	NM_002160.4	P1
DELEC1	ENST00000649121.1	n.208-499T>C		intron_variant, non_coding_transcript_variant

Frequencies

GnomAD3 genomes Cov.: 34

GnomAD4 exome Cov.: 94

GnomAD4 genome Cov.: 34

Alfa AF: 0.0000611 Hom.: 0

ClinVar

Significance: Uncertain significance

Submissions summary: Uncertain:2

Revision: criteria provided, single submitter

Submissions by phenotype

Autosomal dominant nonsyndromic hearing loss 56 Uncertain:1

Uncertain significance, criteria provided, single submitter

clinical testing

Centre for Mendelian Genomics, University Medical Centre Ljubljana

Oct 16, 2018

This variant was classified as: Uncertain significance. The available evidence on this variant's pathogenicity is insufficient or conflicting. The following ACMG criteria were applied in classifying this variant: PP3,PM2. -

Myopia;C0042571:Vertigo;C1843156:Progressive sensorineural hearing impairment Uncertain:1

Uncertain significance, criteria provided, single submitter

clinical testing

Centre for Mendelian Genomics, University Medical Centre Ljubljana

Jan 01, 2017

- -

Computational scores

Source: dbNSFP v4.3

Name	Calibrated prediction	Score	Prediction
AlphaMissense	Benign	0.17
BayesDel_addAF	Benign	-0.24	T
BayesDel_noAF	Benign	-0.58
CADD	Benign	19
DANN	Uncertain	1.0
DEOGEN2	Benign	0.34	.;T;.;T;.;.
Eigen	Uncertain	0.26
Eigen_PC	Uncertain	0.31
FATHMM_MKL	Benign	0.61	D
LIST_S2	Uncertain	0.90	D;D;D;D;D;.
M_CAP	Benign	0.016	T
MetaRNN	Benign	0.19	T;T;T;T;T;T
MetaSVM	Benign	-1.1	T
MutationAssessor	Benign	0.86	.;L;.;.;L;.
MutationTaster	Benign	0.66	N;N;N;N;N;N;N;N;N
PrimateAI	Benign	0.40	T
PROVEAN	Benign	-1.8	N;N;N;N;N;N
REVEL	Benign	0.062
Sift	Uncertain	0.016	D;D;D;D;D;D
Sift4G	Benign	0.13	T;T;T;T;T;T
Polyphen		0.86	.;P;.;P;.;.
Vest4		0.19
MutPred		0.59		Gain of glycosylation at N297 (P = 0.1894);Gain of glycosylation at N297 (P = 0.1894);Gain of glycosylation at N297 (P = 0.1894);Gain of glycosylation at N297 (P = 0.1894);Gain of glycosylation at N297 (P = 0.1894);Gain of glycosylation at N297 (P = 0.1894);
MVP		0.51
MPC		0.51
ClinPred		0.60	D
GERP RS		4.4
Varity_R		0.10
gMVP		0.27

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

Other links and lift over

dbSNP: rs1554717312; hg19: chr9-117849120; COSMIC: COSV60790728; COSMIC: COSV60790728;