Variant chr3-114294065-C-T details in Genebe, Genetics Data Aggregator

Variant summary

Our verdict is Uncertain significance. Variant got 0 ACMG points: 2P and 2B. PM2BP4_Moderate

The NM_173799.4(TIGIT):c.4C>T(p.Arg2Cys) variant causes a missense change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.0000612 in 1,552,404 control chromosomes in the GnomAD database, with no homozygous occurrence. In-silico tool predicts a benign outcome for this variant. 14/21 in silico tools predict a benign 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. R2H) has been classified as Uncertain significance.

Frequency

Genomes: 𝑓 0.000072 ( 0 hom., cov: 32)

Exomes 𝑓: 0.000060 ( 0 hom. )

Consequence

TIGIT
NM_173799.4 missense

Scores

Clinical Significance

Uncertain significance criteria provided, single submitter U:1

Conservation

PhyloP100: 0.217

Variant links:

Genes affected

TIGIT (HGNC:26838): (T cell immunoreceptor with Ig and ITIM domains) This gene encodes a member of the PVR (poliovirus receptor) family of immunoglobin proteins. The product of this gene is expressed on several classes of T cells including follicular B helper T cells (TFH). The protein has been shown to bind PVR with high affinity; this binding is thought to assist interactions between TFH and dendritic cells to regulate T cell dependent B cell responses.[provided by RefSeq, Sep 2009]

TIGIT links:

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ACMG classification

Classification made for transcript

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=0.14588743).

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	MANE	UniProt
TIGIT	NM_173799.4 linkuse as main transcript	c.4C>T	p.Arg2Cys	missense_variant	1/4	ENST00000383671.8
TIGIT	XM_047447671.1 linkuse as main transcript	c.4C>T	p.Arg2Cys	missense_variant	1/4

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	TSL	MANE	Appris	UniProt
TIGIT	ENST00000383671.8 linkuse as main transcript	c.4C>T	p.Arg2Cys	missense_variant	1/4	1	NM_173799.4	P1	Q495A1-1

Frequencies

GnomAD3 genomes

AF:

0.0000723

AC:

AN:

152182

Hom.:

Cov.:

show subpopulations

Gnomad AFR

AF:

0.0000483

Gnomad AMI

AF:

0.00

Gnomad AMR

AF:

0.0000654

Gnomad ASJ

AF:

0.00

Gnomad EAS

AF:

0.00

Gnomad SAS

AF:

0.000207

Gnomad FIN

AF:

0.00

Gnomad MID

AF:

0.00

Gnomad NFE

AF:

0.000103

Gnomad OTH

AF:

0.00

GnomAD3 exomes

AF:

0.0000500

AC:

AN:

160140

Hom.:

AF XY:

0.0000832

AC XY:

AN XY:

84184

show subpopulations

Gnomad AFR exome

AF:

0.000112

Gnomad AMR exome

AF:

0.000121

Gnomad ASJ exome

AF:

0.00

Gnomad EAS exome

AF:

0.00

Gnomad SAS exome

AF:

0.0000438

Gnomad FIN exome

AF:

0.00

Gnomad NFE exome

AF:

0.0000484

Gnomad OTH exome

AF:

0.00

GnomAD4 exome

AF:

0.0000600

AC:

AN:

1400222

Hom.:

Cov.:

AF XY:

0.0000492

AC XY:

AN XY:

690682

show subpopulations

Gnomad4 AFR exome

AF:

0.000126

Gnomad4 AMR exome

AF:

0.000308

Gnomad4 ASJ exome

AF:

0.00

Gnomad4 EAS exome

AF:

0.00

Gnomad4 SAS exome

AF:

0.0000126

Gnomad4 FIN exome

AF:

0.00

Gnomad4 NFE exome

AF:

0.0000574

Gnomad4 OTH exome

AF:

0.000103

GnomAD4 genome

AF:

0.0000723

AC:

AN:

152182

Hom.:

Cov.:

AF XY:

0.0000269

AC XY:

AN XY:

74326

show subpopulations

Gnomad4 AFR

AF:

0.0000483

Gnomad4 AMR

AF:

0.0000654

Gnomad4 ASJ

AF:

0.00

Gnomad4 EAS

AF:

0.00

Gnomad4 SAS

AF:

0.000207

Gnomad4 FIN

AF:

0.00

Gnomad4 NFE

AF:

0.000103

Gnomad4 OTH

AF:

0.00

Alfa

AF:

0.0000579

Hom.:

Bravo

AF:

0.0000831

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

Feb 10, 2022

The c.4C>T (p.R2C) alteration is located in exon 1 (coding exon 1) of the TIGIT gene. This alteration results from a C to T substitution at nucleotide position 4, causing the arginine (R) at amino acid position 2 to be replaced by a cysteine (C). 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

Benign

0.15

BayesDel_addAF

Benign

-0.24

BayesDel_noAF

Benign

-0.34

CADD

Benign

DANN

Uncertain

1.0

DEOGEN2

Benign

0.062

.;T;T

Eigen

Benign

-0.20

Eigen_PC

Benign

-0.20

FATHMM_MKL

Benign

0.19

LIST_S2

Benign

0.59

T;.;T

M_CAP

Uncertain

0.10

MetaRNN

Benign

0.15

T;T;T

MetaSVM

Benign

-0.88

MutationAssessor

Benign

1.2

.;L;L

MutationTaster

Benign

0.99

D;N;N

PrimateAI

Benign

0.25

PROVEAN

Benign

-0.70

N;N;N

REVEL

Benign

0.13

Sift

Uncertain

0.0090

D;D;D

Sift4G

Uncertain

0.0090

D;D;D

Polyphen

0.99

.;D;D

Vest4

0.16

MVP

0.54

MPC

0.40

ClinPred

0.084

GERP RS

3.3

Varity_R

0.076

gMVP

0.32

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

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