Variant 18-68682952-T-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_019022.5(TMX3):c.878A>G(p.Asn293Ser) variant causes a missense change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.0000366 in 1,610,914 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 (★).

Frequency

Genomes: 𝑓 0.00020 ( 0 hom., cov: 32)

Exomes 𝑓: 0.000019 ( 0 hom. )

Consequence

TMX3
NM_019022.5 missense

Scores

Clinical Significance

Uncertain significance criteria provided, single submitter U:1

Conservation

PhyloP100: 1.54

Variant links:

Genes affected

TMX3 (HGNC:24718): (thioredoxin related transmembrane protein 3) 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 canonical protein encoded by this gene has an N-terminal ER-signal sequence, a catalytically active thioredoxin domain, one transmembrane domain and a C-terminal ER-retention sequence. This gene is expressed in many tissues but has its highest expression in heart and skeletal muscle. It is expressed in the retinal neuroepithelium and lens epithelium in the developing murine eye and haploinsufficiency of this gene in humans and zebrafish is associated with microphthalmia. Alternative splicing results in multiple transcript variants encoding distinct isoforms. [provided by RefSeq, Apr 2017]

TMX3 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=0.022758842).

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	MANE	Protein	UniProt
TMX3	NM_019022.5 linkuse as main transcript	c.878A>G	p.Asn293Ser	missense_variant	13/16	ENST00000299608.7	NP_061895.3

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	TSL	MANE	Protein	Appris	UniProt
TMX3	ENST00000299608.7 linkuse as main transcript	c.878A>G	p.Asn293Ser	missense_variant	13/16	1	NM_019022.5	ENSP00000299608	P1	Q96JJ7-1
TMX3	ENST00000564631.5 linkuse as main transcript	c.*562A>G		3_prime_UTR_variant, NMD_transcript_variant	12/15	1		ENSP00000456587
TMX3	ENST00000578765.1 linkuse as main transcript	n.453A>G		non_coding_transcript_exon_variant	4/4	4

Frequencies

GnomAD3 genomes

AF:

0.000204

AC:

AN:

152028

Hom.:

Cov.:

show subpopulations

Gnomad AFR

AF:

0.000701

Gnomad AMI

AF:

0.00

Gnomad AMR

AF:

0.000131

Gnomad ASJ

AF:

0.00

Gnomad EAS

AF:

0.00

Gnomad SAS

AF:

0.00

Gnomad FIN

AF:

0.00

Gnomad MID

AF:

0.00

Gnomad NFE

AF:

0.00

Gnomad OTH

AF:

0.00

GnomAD3 exomes

AF:

0.0000400

AC:

AN:

250080

Hom.:

AF XY:

0.0000296

AC XY:

AN XY:

135256

show subpopulations

Gnomad AFR exome

AF:

0.000558

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:

0.00000883

Gnomad OTH exome

AF:

0.00

GnomAD4 exome

AF:

0.0000192

AC:

AN:

1458768

Hom.:

Cov.:

AF XY:

0.0000138

AC XY:

AN XY:

725722

show subpopulations

Gnomad4 AFR exome

AF:

0.000390

Gnomad4 AMR exome

AF:

0.0000673

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:

0.00000450

Gnomad4 OTH exome

AF:

0.000116

GnomAD4 genome

AF:

0.000204

AC:

AN:

152146

Hom.:

Cov.:

AF XY:

0.000202

AC XY:

AN XY:

74388

show subpopulations

Gnomad4 AFR

AF:

0.000699

Gnomad4 AMR

AF:

0.000131

Gnomad4 ASJ

AF:

0.00

Gnomad4 EAS

AF:

0.00

Gnomad4 SAS

AF:

0.00

Gnomad4 FIN

AF:

0.00

Gnomad4 NFE

AF:

0.00

Gnomad4 OTH

AF:

0.00

Alfa

AF:

0.000131

Hom.:

Bravo

AF:

0.000159

ESP6500AA

AF:

0.00159

AC:

ESP6500EA

AF:

0.00

AC:

ExAC

AF:

0.0000576

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

Dec 20, 2023

The c.878A>G (p.N293S) alteration is located in exon 13 (coding exon 13) of the TMX3 gene. This alteration results from a A to G substitution at nucleotide position 878, causing the asparagine (N) at amino acid position 293 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

0.068

BayesDel_addAF

Benign

-0.60

BayesDel_noAF

Benign

-0.74

CADD

Benign

DANN

Uncertain

0.98

DEOGEN2

Benign

0.0078

Eigen

Benign

-0.26

Eigen_PC

Benign

-0.068

FATHMM_MKL

Uncertain

0.76

LIST_S2

Uncertain

0.90

M_CAP

Benign

0.0061

MetaRNN

Benign

0.023

MetaSVM

Benign

-1.0

MutationAssessor

Benign

0.69

MutationTaster

Benign

1.0

PrimateAI

Benign

0.42

PROVEAN

Benign

-0.83

REVEL

Benign

0.13

Sift

Benign

0.82

Sift4G

Benign

0.69

Polyphen

0.028

Vest4

0.14

MVP

0.095

MPC

0.25

ClinPred

0.020

GERP RS

3.0

RBP_binding_hub_radar

0.0

RBP_regulation_power_radar

1.7

Varity_R

0.041

gMVP

0.42

Splicing

Name

Calibrated prediction

Score

Prediction

SpliceAI score (max)

0.010

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