Variant 17-18804138-G-T details in Genebe, Genetics Data Aggregator

Variant summary

Our verdict is Likely benign. Variant got -2 ACMG points: 2P and 4B. PM2BP4_Strong

The NM_016078.6(TVP23B):c.463G>T(p.Ala155Ser) variant causes a missense, splice region change. The variant allele was found at a frequency of 0.0000713 in 1,613,764 control chromosomes in the GnomAD database, including 1 homozygotes. In-silico tool predicts a benign outcome for this variant. 15/23 in silico tools predict a benign outcome for this variant. 3/3 splice prediction tools predict no significant impact on normal splicing. Variant has been reported in ClinVar as Uncertain significance (★).

Frequency

Genomes: 𝑓 0.000085 ( 0 hom., cov: 25)

Exomes 𝑓: 0.000070 ( 1 hom. )

Consequence

TVP23B
NM_016078.6 missense, splice_region

Scores

Splicing: ADA: 0.3292

Clinical Significance

Uncertain significance criteria provided, single submitter U:1

Conservation

PhyloP100: 5.01

Variant links:

Genes affected

TVP23B (HGNC:20399): (trans-golgi network vesicle protein 23 homolog B) Predicted to be involved in protein secretion and vesicle-mediated transport. Predicted to be integral component of membrane. Predicted to be integral component of Golgi membrane. [provided by Alliance of Genome Resources, Apr 2022]

TVP23B links:

Genome browser will be placed here

ACMG classification

Classification made for transcript

Verdict is Likely_benign. Variant got -2 ACMG points.

PM2

Very rare variant in population databases, with high coverage;

BP4

Computational evidence support a benign effect (MetaRNN=0.020017296).

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	MANE	Protein	UniProt
TVP23B	NM_016078.6 link	c.463G>T	p.Ala155Ser	missense_variant, splice_region_variant	6/7	ENST00000307767.13	NP_057162.4	Q9NYZ1

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	TSL	MANE	Protein	Appris	UniProt
TVP23B	ENST00000307767.13 link	c.463G>T	p.Ala155Ser	missense_variant, splice_region_variant	6/7	1	NM_016078.6	ENSP00000305654.8		Q9NYZ1

Frequencies

GnomAD3 genomes

AF:

0.0000854

AC:

AN:

152210

Hom.:

Cov.:

show subpopulations

Gnomad AFR

AF:

0.00

Gnomad AMI

AF:

0.00

Gnomad AMR

AF:

0.00

Gnomad ASJ

AF:

0.00346

Gnomad EAS

AF:

0.00

Gnomad SAS

AF:

0.00

Gnomad FIN

AF:

0.00

Gnomad MID

AF:

0.00

Gnomad NFE

AF:

0.0000147

Gnomad OTH

AF:

0.00

GnomAD3 exomes

AF:

0.000157

AC:

AN:

249016

Hom.:

AF XY:

0.000185

AC XY:

AN XY:

135084

show subpopulations

Gnomad AFR exome

AF:

0.00

Gnomad AMR exome

AF:

0.00

Gnomad ASJ exome

AF:

0.00348

Gnomad EAS exome

AF:

0.00

Gnomad SAS exome

AF:

0.00

Gnomad FIN exome

AF:

0.00

Gnomad NFE exome

AF:

0.0000177

Gnomad OTH exome

AF:

0.000331

GnomAD4 exome

AF:

0.0000698

AC:

102

AN:

1461554

Hom.:

Cov.:

AF XY:

0.0000743

AC XY:

AN XY:

727076

show subpopulations

Gnomad4 AFR exome

AF:

0.00

Gnomad4 AMR exome

AF:

0.00

Gnomad4 ASJ exome

AF:

0.00310

Gnomad4 EAS exome

AF:

0.00

Gnomad4 SAS exome

AF:

0.00

Gnomad4 FIN exome

AF:

0.00

Gnomad4 NFE exome

AF:

0.00000899

Gnomad4 OTH exome

AF:

0.000182

GnomAD4 genome

AF:

0.0000854

AC:

AN:

152210

Hom.:

Cov.:

AF XY:

0.0000538

AC XY:

AN XY:

74364

show subpopulations

Gnomad4 AFR

AF:

0.00

Gnomad4 AMR

AF:

0.00

Gnomad4 ASJ

AF:

0.00346

Gnomad4 EAS

AF:

0.00

Gnomad4 SAS

AF:

0.00

Gnomad4 FIN

AF:

0.00

Gnomad4 NFE

AF:

0.0000147

Gnomad4 OTH

AF:

0.00

Alfa

AF:

0.000408

Hom.:

Bravo

AF:

0.000125

ESP6500AA

AF:

0.00

AC:

ESP6500EA

AF:

0.000121

AC:

ExAC

AF:

0.000107

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

Sep 22, 2022

The c.463G>T (p.A155S) alteration is located in exon 6 (coding exon 6) of the TVP23B gene. This alteration results from a G to T substitution at nucleotide position 463, causing the alanine (A) at amino acid position 155 to be replaced by a serine (S). 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

0.18

BayesDel_addAF

Benign

-0.16

BayesDel_noAF

Benign

-0.46

CADD

Uncertain

DANN

Benign

0.92

DEOGEN2

Benign

0.036

T;T;T;T;T

Eigen

Benign

-0.22

Eigen_PC

Benign

-0.22

FATHMM_MKL

Uncertain

0.92

LIST_S2

Uncertain

0.87

D;D;D;.;D

M_CAP

Benign

0.0076

MetaRNN

Benign

0.020

T;T;T;T;T

MetaSVM

Benign

-0.98

MutationAssessor

Benign

1.4

L;.;.;.;.

PrimateAI

Benign

0.45

PROVEAN

Benign

-1.9

N;.;.;.;.

REVEL

Benign

0.10

Sift

Benign

0.27

T;.;.;.;.

Sift4G

Benign

0.35

T;T;T;T;T

Polyphen

0.054

B;.;.;.;.

Vest4

0.49

MVP

0.18

MPC

0.60

ClinPred

0.14

GERP RS

2.7

RBP_binding_hub_radar

0.0

RBP_regulation_power_radar

1.7

Varity_R

0.21

gMVP

0.23

Splicing

Name

Calibrated prediction

Score

Prediction

dbscSNV1_ADA

Benign

0.33

dbscSNV1_RF

Benign

0.50

SpliceAI score (max)

0.17

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