NM_006440.5:c.656G>C

Variant names:

Variant summary

Our verdict is Benign. The variant received -7 ACMG points: 0P and 7B. BP4_ModerateBP6BS2

The NM_006440.5(TXNRD2):c.656G>C(p.Gly219Ala) variant causes a missense change. The variant allele was found at a frequency of 0.000206 in 1,613,864 control chromosomes in the GnomAD database, including 3 homozygotes. In-silico tool predicts a benign outcome for this variant. Variant has been reported in ClinVar as Conflicting classifications of pathogenicity (no stars). Another variant affecting the same amino acid position, but resulting in a different missense (i.e. G219R) has been classified as Uncertain significance.

Frequency

Genomes: 𝑓 0.00041 ( 0 hom., cov: 32)

Exomes 𝑓: 0.00018 ( 3 hom. )

Consequence

TXNRD2
NM_006440.5 missense

Scores

Clinical Significance

Conflicting classifications of pathogenicity criteria provided, conflicting classifications U:1B:3

Conservation

PhyloP100: 5.40

Publications

5 publications found

Variant links:

Genes affected

TXNRD2 (HGNC:18155): (thioredoxin reductase 2) The protein encoded by this gene belongs to the pyridine nucleotide-disulfide oxidoreductase family, and is a member of the thioredoxin (Trx) system. Three thioredoxin reductase (TrxR) isozymes are found in mammals. TrxRs are selenocysteine-containing flavoenzymes, which reduce thioredoxins, as well as other substrates, and play a key role in redox homoeostasis. This gene encodes a mitochondrial form important for scavenging reactive oxygen species in mitochondria. It functions as a homodimer containing FAD, and selenocysteine (Sec) at the active site. Sec is encoded by UGA codon that normally signals translation termination. The 3' UTRs of selenoprotein mRNAs contain a conserved stem-loop structure, the Sec insertion sequence (SECIS) element, which is necessary for the recognition of UGA as a Sec codon rather than as a stop signal. Alternatively spliced transcript variants encoding different isoforms, including a few localized in the cytosol and some lacking the C-terminal Sec residue, have been found for this gene. [provided by RefSeq, Jun 2017]

TXNRD2 Gene-Disease associations (from GenCC):

familial isolated dilated cardiomyopathy
Inheritance: AD Classification: SUPPORTIVE Submitted by: Orphanet
familial glucocorticoid deficiency
Inheritance: AR Classification: SUPPORTIVE Submitted by: Orphanet
dilated cardiomyopathy
Inheritance: AD Classification: LIMITED Submitted by: Ambry Genetics
glucocorticoid deficiency 5
Inheritance: Unknown Classification: LIMITED Submitted by: Labcorp Genetics (formerly Invitae)

TXNRD2 links:

Genome browser will be placed here

ACMG classification

Classification was made for transcript

Our verdict: Benign. The variant received -7 ACMG points.

BP4

Computational evidence support a benign effect (MetaRNN=0.13502258).

BP6

Variant 22-19911383-C-G is Benign according to our data. Variant chr22-19911383-C-G is described in ClinVar as Conflicting_classifications_of_pathogenicity. ClinVar VariationId is 240655.

BS2

High Homozygotes in GnomAdExome4 at 3 AD,AR,Unknown gene

Variant Effect in Transcripts

ACMG analysis was done for transcript: NM_006440.5. You can select a different transcript below to see updated ACMG assignments.

RefSeq Transcripts

Gene	Transcript	Tags	HGVSc	HGVSp	Effect	Exon Rank	Protein
TXNRD2	NM_006440.5	MANE Select	c.656G>C	p.Gly219Ala	missense	Exon 8 of 18	NP_006431.2
TXNRD2	NM_001352300.2		c.653G>C	p.Gly218Ala	missense	Exon 8 of 17	NP_001339229.1
TXNRD2	NM_001352301.2		c.566G>C	p.Gly189Ala	missense	Exon 8 of 18	NP_001339230.1

Ensembl Transcripts

Gene	Transcript	Tags	HGVSc	HGVSp	Effect	Exon Rank	Protein	UniProt
TXNRD2	ENST00000400521.7	TSL:1 MANE Select	c.656G>C	p.Gly219Ala	missense	Exon 8 of 18	ENSP00000383365.1	Q9NNW7-1
TXNRD2	ENST00000400519.6	TSL:1	c.653G>C	p.Gly218Ala	missense	Exon 8 of 17	ENSP00000383363.1	A0A182DWF3
TXNRD2	ENST00000400518.5	TSL:1	c.566G>C	p.Gly189Ala	missense	Exon 8 of 18	ENSP00000383362.1	A0A182DWF2

Frequencies

GnomAD3 genomes

AF:

0.000414

AC:

AN:

152184

Hom.:

Cov.:

show subpopulations

Gnomad AFR

AF:

0.000386

Gnomad AMI

AF:

0.00

Gnomad AMR

AF:

0.00196

Gnomad ASJ

AF:

0.000288

Gnomad EAS

AF:

0.00

Gnomad SAS

AF:

0.00

Gnomad FIN

AF:

0.00

Gnomad MID

AF:

0.00316

Gnomad NFE

AF:

0.000220

Gnomad OTH

AF:

0.00

GnomAD2 exomes

AF:

0.000317

AC:

AN:

249562

AF XY:

0.000288

show subpopulations

Gnomad AFR exome

AF:

0.000452

Gnomad AMR exome

AF:

0.00125

Gnomad ASJ exome

AF:

0.000794

Gnomad EAS exome

AF:

0.00

Gnomad FIN exome

AF:

0.00

Gnomad NFE exome

AF:

0.000141

Gnomad OTH exome

AF:

0.000825

GnomAD4 exome

AF:

0.000184

AC:

269

AN:

1461562

Hom.:

Cov.:

AF XY:

0.000173

AC XY:

126

AN XY:

727112

show subpopulations

African (AFR)

AF:

0.000329

AC:

AN:

33474

American (AMR)

AF:

0.00152

AC:

AN:

44722

Ashkenazi Jewish (ASJ)

AF:

0.000536

AC:

AN:

26132

East Asian (EAS)

AF:

0.00

AC:

AN:

39696

South Asian (SAS)

AF:

0.0000116

AC:

AN:

86244

European-Finnish (FIN)

AF:

0.00

AC:

AN:

53416

Middle Eastern (MID)

AF:

0.000869

AC:

AN:

5752

European-Non Finnish (NFE)

AF:

0.000117

AC:

130

AN:

1111746

Other (OTH)

AF:

0.000662

AC:

AN:

60380

Allele Balance Distribution

Red line indicates average allele balance

Average allele balance: 0.477

Heterozygous variant carriers

0.00

0.20

0.40

0.60

0.80

0.95

Allele balance

Age Distribution

Exome Het

Exome Hom

Variant carriers

<30

30-35

35-40

40-45

45-50

50-55

55-60

60-65

65-70

70-75

75-80

>80

Age

GnomAD4 genome

AF:

0.000414

AC:

AN:

152302

Hom.:

Cov.:

AF XY:

0.000430

AC XY:

AN XY:

74466

show subpopulations

African (AFR)

AF:

0.000385

AC:

AN:

41564

American (AMR)

AF:

0.00196

AC:

AN:

15290

Ashkenazi Jewish (ASJ)

AF:

0.000288

AC:

AN:

3472

East Asian (EAS)

AF:

0.00

AC:

AN:

5186

South Asian (SAS)

AF:

0.00

AC:

AN:

4824

European-Finnish (FIN)

AF:

0.00

AC:

AN:

10626

Middle Eastern (MID)

AF:

0.00340

AC:

AN:

294

European-Non Finnish (NFE)

AF:

0.000221

AC:

AN:

68024

Other (OTH)

AF:

0.00

AC:

AN:

2112

Allele Balance Distribution

Red line indicates average allele balance

Average allele balance: 0.484

Heterozygous variant carriers

0.00

0.20

0.40

0.60

0.80

0.95

Allele balance

Age Distribution

Genome Het

Variant carriers

<30

30-35

35-40

40-45

45-50

50-55

55-60

60-65

65-70

70-75

75-80

>80

Age

Alfa

AF:

0.000191

Hom.:

Bravo

AF:

0.000661

ESP6500AA

AF:

0.00

AC:

ESP6500EA

AF:

0.000241

AC:

ExAC

AF:

0.000215

AC:

EpiCase

AF:

0.000327

EpiControl

AF:

0.000178

ClinVar

ClinVar submissions

Significance:Conflicting classifications of pathogenicity

Revision:criteria provided, conflicting classifications

View on ClinVar

Pathogenic

VUS

Benign

Condition

Cardiovascular phenotype (1)

Glucocorticoid deficiency 5 (1)

not provided (1)

Primary dilated cardiomyopathy (1)

Computational scores

Source: dbNSFP v4.9

Name

Calibrated prediction

Score

Prediction

AlphaMissense

Uncertain

0.42

BayesDel_addAF

Benign

-0.23

BayesDel_noAF

Benign

-0.14

CADD

Pathogenic

(source)

DANN

Uncertain

1.0

DEOGEN2

Benign

0.29

Eigen

Pathogenic

0.78

Eigen_PC

Pathogenic

0.77

FATHMM_MKL

Pathogenic

0.98

LIST_S2

Pathogenic

0.98

M_CAP

Benign

0.016

MetaRNN

Benign

0.14

MetaSVM

Benign

-0.62

MutationAssessor

Benign

1.8

PhyloP100

5.4

PrimateAI

Uncertain

0.70

PROVEAN

Pathogenic

-5.8

REVEL

Uncertain

0.34

Sift

Uncertain

0.0010

Sift4G

Uncertain

0.014

Polyphen

1.0

Vest4

0.58

MVP

0.57

MPC

0.76

ClinPred

0.073

GERP RS

5.6

RBP_binding_hub_radar

0.0

RBP_regulation_power_radar

1.7

Varity_R

0.92

Mutation Taster

=57/43

polymorphism

(source)

Splicing

Name

Calibrated prediction

Score

Prediction

SpliceAI score (max)

0.020

Details are displayed if max score is > 0.2

Find out detailed SpliceAI scores and Pangolin per-transcript scores at spliceailookup.broadinstitute.org

Publications

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Variant summary

Frequency

Consequence

Scores

Clinical Significance

Conservation

Publications

ACMG classification

Variant Effect in Transcripts

RefSeq Transcripts

Ensembl Transcripts

Frequencies

Age Distribution

Age Distribution

ClinVar

Computational scores

Splicing

Publications

Other links and lift over