Variant 17-18805548-G-C 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.599G>C(p.Gly200Ala) variant causes a missense change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.00000137 in 1,455,512 control chromosomes in the GnomAD database, with no homozygous occurrence. In-silico tool predicts a benign outcome for this variant. 15/21 in silico tools predict a benign outcome for this variant. Variant has been reported in ClinVar as Uncertain significance (★).

Frequency

Genomes: not found (cov: 30)

Exomes 𝑓: 0.0000014 ( 0 hom. )

Consequence

TVP23B
NM_016078.6 missense

Scores

Clinical Significance

Uncertain significance criteria provided, single submitter U:1

Conservation

PhyloP100: 0.376

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:

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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=0.06454679).

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	MANE	Protein	UniProt
TVP23B	NM_016078.6 link	c.599G>C	p.Gly200Ala	missense_variant	7/7	ENST00000307767.13	NP_057162.4	Q9NYZ1

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	TSL	MANE	Protein	Appris	UniProt
TVP23B	ENST00000307767.13 link	c.599G>C	p.Gly200Ala	missense_variant	7/7	1	NM_016078.6	ENSP00000305654.8		Q9NYZ1

Frequencies

GnomAD3 genomes

Cov.:

GnomAD3 exomes

AF:

0.00000412

AC:

AN:

242484

Hom.:

AF XY:

0.00

AC XY:

AN XY:

131776

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:

0.00

Gnomad FIN exome

AF:

0.00

Gnomad NFE exome

AF:

0.00000900

Gnomad OTH exome

AF:

0.00

GnomAD4 exome

AF:

0.00000137

AC:

AN:

1455512

Hom.:

Cov.:

AF XY:

0.00000138

AC XY:

AN XY:

724176

show subpopulations

Gnomad4 AFR exome

AF:

0.00

Gnomad4 AMR exome

AF:

0.00

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:

0.0000333

GnomAD4 genome

Cov.:

Alfa

AF:

0.0000434

Hom.:

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 23, 2023

The c.599G>C (p.G200A) alteration is located in exon 7 (coding exon 7) of the TVP23B gene. This alteration results from a G to C substitution at nucleotide position 599, causing the glycine (G) at amino acid position 200 to be replaced by an alanine (A). 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

0.075

BayesDel_addAF

Benign

-0.30

BayesDel_noAF

Benign

-0.66

CADD

Benign

DANN

Benign

0.81

DEOGEN2

Benign

0.0076

T;T;T

Eigen

Benign

-0.96

Eigen_PC

Benign

-0.88

FATHMM_MKL

Benign

0.48

LIST_S2

Benign

0.67

T;.;T

M_CAP

Benign

0.0044

MetaRNN

Benign

0.065

T;T;T

MetaSVM

Benign

-0.98

MutationAssessor

Benign

0.69

N;.;.

PrimateAI

Benign

0.38

PROVEAN

Benign

-0.62

N;.;.

REVEL

Benign

0.037

Sift

Benign

0.56

T;.;.

Sift4G

Benign

0.91

T;T;T

Polyphen

0.0

B;.;.

Vest4

0.074

MutPred

0.12

Loss of stability (P = 0.0309);.;.;

MVP

0.014

MPC

0.63

ClinPred

0.022

GERP RS

0.84

Varity_R

0.045

gMVP

0.17

Splicing

Name

Calibrated prediction

Score

Prediction

SpliceAI score (max)

0.040

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