Variant chr20-7982613-G-A 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_021156.4(TMX4):c.688C>T(p.Arg230Trp) variant causes a missense change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.0000609 in 1,610,490 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. No clinical diagnostic laboratories have submitted clinical-significance assessments for this variant to ClinVar.

Frequency

Genomes: 𝑓 0.000066 ( 0 hom., cov: 32)

Exomes 𝑓: 0.000060 ( 0 hom. )

Consequence

TMX4
NM_021156.4 missense

Scores

Clinical Significance

Uncertain significance criteria provided, single submitter U:1

Conservation

PhyloP100: 0.524

Variant links:

Genes affected

TMX4 (HGNC:25237): (thioredoxin related transmembrane protein 4) This gene encodes a member of the disulfide isomerase (PDI) family of endoplasmic reticulum (ER) proteins that catalyze protein folding and thiol-disulfide interchange reactions. The encoded protein has an N-terminal ER-signal sequence, a catalytically active thioredoxin domain, one transmembrane domain and C-terminal ASP/GLU-rich calcium binding domain. Unlike most members of this gene family, it lacks a C-terminal ER-retention sequence. The encoded protein has been shown to have reductase activity in vitro. [provided by RefSeq, Jan 2017]

TMX4 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=0.03616199).

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	MANE	Protein	UniProt
TMX4	NM_021156.4 linkuse as main transcript	c.688C>T	p.Arg230Trp	missense_variant	8/8	ENST00000246024.7	NP_066979.2	Q9H1E5

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	TSL	MANE	Protein	Appris	UniProt
TMX4	ENST00000246024.7 linkuse as main transcript	c.688C>T	p.Arg230Trp	missense_variant	8/8	1	NM_021156.4	ENSP00000246024.2		Q9H1E5

Frequencies

GnomAD3 genomes

AF:

0.0000657

AC:

AN:

152114

Hom.:

Cov.:

show subpopulations

Gnomad AFR

AF:

0.00

Gnomad AMI

AF:

0.00

Gnomad AMR

AF:

0.0000655

Gnomad ASJ

AF:

0.00

Gnomad EAS

AF:

0.00

Gnomad SAS

AF:

0.00104

Gnomad FIN

AF:

0.00

Gnomad MID

AF:

0.00

Gnomad NFE

AF:

0.0000588

Gnomad OTH

AF:

0.00

GnomAD3 exomes

AF:

0.000114

AC:

AN:

245572

Hom.:

AF XY:

0.000165

AC XY:

AN XY:

133040

show subpopulations

Gnomad AFR exome

AF:

0.00

Gnomad AMR exome

AF:

0.0000291

Gnomad ASJ exome

AF:

0.00

Gnomad EAS exome

AF:

0.00

Gnomad SAS exome

AF:

0.000792

Gnomad FIN exome

AF:

0.00

Gnomad NFE exome

AF:

0.0000273

Gnomad OTH exome

AF:

0.00

GnomAD4 exome

AF:

0.0000603

AC:

AN:

1458376

Hom.:

Cov.:

AF XY:

0.0000882

AC XY:

AN XY:

725490

show subpopulations

Gnomad4 AFR exome

AF:

0.00

Gnomad4 AMR exome

AF:

0.0000225

Gnomad4 ASJ exome

AF:

0.00

Gnomad4 EAS exome

AF:

0.00

Gnomad4 SAS exome

AF:

0.000721

Gnomad4 FIN exome

AF:

0.00

Gnomad4 NFE exome

AF:

0.0000198

Gnomad4 OTH exome

AF:

0.0000498

GnomAD4 genome

AF:

0.0000657

AC:

AN:

152114

Hom.:

Cov.:

AF XY:

0.0000942

AC XY:

AN XY:

74294

show subpopulations

Gnomad4 AFR

AF:

0.00

Gnomad4 AMR

AF:

0.0000655

Gnomad4 ASJ

AF:

0.00

Gnomad4 EAS

AF:

0.00

Gnomad4 SAS

AF:

0.00104

Gnomad4 FIN

AF:

0.00

Gnomad4 NFE

AF:

0.0000588

Gnomad4 OTH

AF:

0.00

Bravo

AF:

0.0000378

TwinsUK

AF:

0.000539

AC:

ALSPAC

AF:

0.00

AC:

ESP6500AA

AF:

0.00

AC:

ESP6500EA

AF:

0.000116

AC:

ExAC

AF:

0.0000906

AC:

EpiCase

AF:

0.0000545

EpiControl

AF:

0.00

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

Aug 19, 2024

The c.688C>T (p.R230W) alteration is located in exon 8 (coding exon 8) of the TMX4 gene. This alteration results from a C to T substitution at nucleotide position 688, causing the arginine (R) at amino acid position 230 to be replaced by a tryptophan (W). 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

0.069

BayesDel_addAF

Benign

-0.52

BayesDel_noAF

Benign

-0.61

CADD

Benign

DANN

Benign

0.95

DEOGEN2

Benign

0.032

Eigen

Benign

-0.89

Eigen_PC

Benign

-0.93

FATHMM_MKL

Benign

0.16

LIST_S2

Benign

0.71

M_CAP

Benign

0.019

MetaRNN

Benign

0.036

MetaSVM

Benign

-0.82

MutationAssessor

Benign

1.1

PrimateAI

Benign

0.22

PROVEAN

Benign

-2.1

REVEL

Benign

0.14

Sift

Uncertain

0.017

Sift4G

Uncertain

0.035

Polyphen

0.83

Vest4

0.15

MVP

0.21

MPC

0.30

ClinPred

0.066

GERP RS

2.9

Varity_R

0.055

gMVP

0.16

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