12-71125345-C-T

Variant summary

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

The NM_004616.3(TSPAN8):c.703G>A(p.Gly235Arg) variant causes a missense change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.0000875 in 1,612,082 control chromosomes in the GnomAD database, with no homozygous occurrence. In-silico tool predicts a benign outcome for this variant. 13/23 in silico tools predict a benign outcome for this variant. Variant has been reported in ClinVar as Uncertain significance (★).

Frequency

Genomes: 𝑓 0.000046 ( 0 hom., cov: 32)

Exomes 𝑓: 0.000092 ( 0 hom. )

Consequence

TSPAN8
NM_004616.3 missense

Scores

Clinical Significance

Uncertain significance criteria provided, single submitter U:1

Conservation

PhyloP100: 0.344

Variant links:

Genes affected

TSPAN8 (HGNC:11855): (tetraspanin 8) The protein encoded by this gene is a member of the transmembrane 4 superfamily, also known as the tetraspanin family. Most of these members are cell-surface proteins that are characterized by the presence of four hydrophobic domains. The proteins mediate signal transduction events that play a role in the regulation of cell development, activation, growth and motility. This encoded protein is a cell surface glycoprotein that is known to complex with integrins. This gene is expressed in different carcinomas. The use of alternate polyadenylation sites has been found for this gene. [provided by RefSeq, Jul 2008]

TSPAN8 links:

Genome browser will be placed here

ACMG classification

Classification made for transcript

Verdict is Uncertain_significance. Variant got 2 ACMG points.

PM2

Very rare variant in population databases, with high coverage;

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	MANE	UniProt
TSPAN8	NM_004616.3 linkuse as main transcript	c.703G>A	p.Gly235Arg	missense_variant	9/9	ENST00000247829.8
TSPAN8	NM_001369760.1 linkuse as main transcript	c.703G>A	p.Gly235Arg	missense_variant	8/8

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	TSL	MANE	Appris
TSPAN8	ENST00000247829.8 linkuse as main transcript	c.703G>A	p.Gly235Arg	missense_variant	9/9	1	NM_004616.3	P1
TSPAN8	ENST00000393330.6 linkuse as main transcript	c.703G>A	p.Gly235Arg	missense_variant	12/12	1		P1
TSPAN8	ENST00000546561.2 linkuse as main transcript	c.703G>A	p.Gly235Arg	missense_variant	8/8	1		P1
TSPAN8	ENST00000552128.2 linkuse as main transcript	n.567G>A		non_coding_transcript_exon_variant	6/6	3

Frequencies

GnomAD3 genomes

AF:

0.0000461

AC:

AN:

152004

Hom.:

Cov.:

show subpopulations

Gnomad AFR

AF:

0.0000242

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:

0.0000946

Gnomad MID

AF:

0.00

Gnomad NFE

AF:

0.0000735

Gnomad OTH

AF:

0.00

GnomAD3 exomes

AF:

0.0000480

AC:

AN:

250014

Hom.:

AF XY:

0.0000370

AC XY:

AN XY:

135128

show subpopulations

Gnomad AFR exome

AF:

0.00

Gnomad AMR exome

AF:

0.00

Gnomad ASJ exome

AF:

0.00

Gnomad EAS exome

AF:

0.00

Gnomad SAS exome

AF:

0.0000330

Gnomad FIN exome

AF:

0.00

Gnomad NFE exome

AF:

0.0000883

Gnomad OTH exome

AF:

0.000164

GnomAD4 exome

AF:

0.0000918

AC:

134

AN:

1460078

Hom.:

Cov.:

AF XY:

0.0000991

AC XY:

AN XY:

726348

show subpopulations

Gnomad4 AFR exome

AF:

0.0000300

Gnomad4 AMR exome

AF:

0.00

Gnomad4 ASJ exome

AF:

0.00

Gnomad4 EAS exome

AF:

0.00

Gnomad4 SAS exome

AF:

0.0000349

Gnomad4 FIN exome

AF:

0.0000375

Gnomad4 NFE exome

AF:

0.000108

Gnomad4 OTH exome

AF:

0.000133

GnomAD4 genome

AF:

0.0000461

AC:

AN:

152004

Hom.:

Cov.:

AF XY:

0.0000404

AC XY:

AN XY:

74234

show subpopulations

Gnomad4 AFR

AF:

0.0000242

Gnomad4 AMR

AF:

0.00

Gnomad4 ASJ

AF:

0.00

Gnomad4 EAS

AF:

0.00

Gnomad4 SAS

AF:

0.00

Gnomad4 FIN

AF:

0.0000946

Gnomad4 NFE

AF:

0.0000735

Gnomad4 OTH

AF:

0.00

Alfa

AF:

0.0000659

Hom.:

Bravo

AF:

0.0000491

ESP6500AA

AF:

0.00

AC:

ESP6500EA

AF:

0.000233

AC:

ExAC

AF:

0.0000247

AC:

EpiCase

AF:

0.000109

EpiControl

AF:

0.0000593

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

Dec 19, 2022

The c.703G>A (p.G235R) alteration is located in exon 9 (coding exon 8) of the TSPAN8 gene. This alteration results from a G to A substitution at nucleotide position 703, causing the glycine (G) at amino acid position 235 to be replaced by an arginine (R). 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

0.33

BayesDel_addAF

Benign

-0.36

BayesDel_noAF

Benign

-0.56

Cadd

Benign

Dann

Uncertain

1.0

DEOGEN2

Benign

0.00018

T;T;T

Eigen

Benign

-0.45

Eigen_PC

Benign

-0.47

FATHMM_MKL

Benign

0.085

M_CAP

Benign

0.013

MetaRNN

Benign

0.12

T;T;T

MetaSVM

Benign

-1.0

MutationAssessor

Benign

0.15

N;N;N

MutationTaster

Benign

1.0

N;N;N;N

PrimateAI

Benign

0.33

PROVEAN

Benign

-0.96

N;N;N

REVEL

Benign

0.11

Sift

Benign

0.12

T;T;T

Sift4G

Benign

0.87

T;T;T

Polyphen

0.99

D;D;D

Vest4

0.044

MutPred

0.25

Gain of MoRF binding (P = 0.0341);Gain of MoRF binding (P = 0.0341);Gain of MoRF binding (P = 0.0341);

MVP

0.73

MPC

0.23

ClinPred

0.16

GERP RS

4.3

Varity_R

0.11

gMVP

0.46

Splicing

Name

Calibrated prediction

Score

Prediction

SpliceAI score (max)

0.28

Details are displayed if max score is > 0.2

DS_AL_spliceai

0.28

Position offset: 42

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