chr12-104258044-G-T

Position:

chr12-104258044-G-T

Variant summary

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

The ENST00000525566.6(TXNRD1):c.269G>T(p.Cys90Phe) variant causes a missense change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.0000361 in 1,552,784 control chromosomes in the GnomAD database, with no homozygous occurrence. In-silico tool predicts a benign outcome for this variant. 14/19 in silico tools predict a benign outcome for this variant. Variant has been reported in ClinVar as Uncertain significance (★).

Frequency

Genomes: 𝑓 0.000053 ( 0 hom., cov: 32)

Exomes 𝑓: 0.000034 ( 0 hom. )

Consequence

TXNRD1
ENST00000525566.6 missense

Scores

Clinical Significance

Uncertain significance criteria provided, single submitter U:1

Conservation

PhyloP100: -0.104

Variant links:

Genes affected

TXNRD1 (HGNC:12437): (thioredoxin reductase 1) 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 an ubiquitously expressed, cytosolic form of TrxR, which 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. Alternative splicing, primarily at the 5' end, results in transcript variants encoding same or different isoforms, including a glutaredoxin-containing isoform that is predominantly expressed in testis. [provided by RefSeq, May 2017]

TXNRD1 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=0.065764785).

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	MANE	Protein	UniProt
TXNRD1	NM_001093771.3 linkuse as main transcript	c.269G>T	p.Cys90Phe	missense_variant	3/17	ENST00000525566.6	NP_001087240.1

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	TSL	MANE	Protein	Appris	UniProt
TXNRD1	ENST00000525566.6 linkuse as main transcript	c.269G>T	p.Cys90Phe	missense_variant	3/17	1	NM_001093771.3	ENSP00000434516	P1	Q16881-1
TXNRD1	ENST00000526006.1 linkuse as main transcript	n.159G>T		non_coding_transcript_exon_variant	2/5	1
TXNRD1	ENST00000534282.1 linkuse as main transcript	n.264G>T		non_coding_transcript_exon_variant	3/3	5

Frequencies

GnomAD3 genomes

AF:

0.0000526

AC:

AN:

152122

Hom.:

Cov.:

show subpopulations

Gnomad AFR

AF:

0.00

Gnomad AMI

AF:

0.00

Gnomad AMR

AF:

0.00

Gnomad ASJ

AF:

0.00

Gnomad EAS

AF:

0.00

Gnomad SAS

AF:

0.00

Gnomad FIN

AF:

0.0000943

Gnomad MID

AF:

0.00

Gnomad NFE

AF:

0.000103

Gnomad OTH

AF:

0.00

GnomAD3 exomes

AF:

0.0000310

AC:

AN:

161170

Hom.:

AF XY:

0.0000118

AC XY:

AN XY:

85038

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:

0.0000771

Gnomad OTH exome

AF:

0.00

GnomAD4 exome

AF:

0.0000343

AC:

AN:

1400662

Hom.:

Cov.:

AF XY:

0.0000289

AC XY:

AN XY:

691000

show subpopulations

Gnomad4 AFR exome

AF:

0.00

Gnomad4 AMR exome

AF:

0.0000285

Gnomad4 ASJ exome

AF:

0.00

Gnomad4 EAS exome

AF:

0.00

Gnomad4 SAS exome

AF:

0.00

Gnomad4 FIN exome

AF:

0.0000202

Gnomad4 NFE exome

AF:

0.0000343

Gnomad4 OTH exome

AF:

0.000155

GnomAD4 genome

AF:

0.0000526

AC:

AN:

152122

Hom.:

Cov.:

AF XY:

0.0000673

AC XY:

AN XY:

74284

show subpopulations

Gnomad4 AFR

AF:

0.00

Gnomad4 AMR

AF:

0.00

Gnomad4 ASJ

AF:

0.00

Gnomad4 EAS

AF:

0.00

Gnomad4 SAS

AF:

0.00

Gnomad4 FIN

AF:

0.0000943

Gnomad4 NFE

AF:

0.000103

Gnomad4 OTH

AF:

0.00

Alfa

AF:

0.000134

Hom.:

ExAC

AF:

0.00000909

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

Aug 04, 2021

The c.269G>T (p.C90F) alteration is located in exon 3 (coding exon 3) of the TXNRD1 gene. This alteration results from a G to T substitution at nucleotide position 269, causing the cysteine (C) at amino acid position 90 to be replaced by a phenylalanine (F). 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

BayesDel_addAF

Benign

-0.21

BayesDel_noAF

Benign

-0.54

CADD

Benign

DANN

Benign

0.88

DEOGEN2

Benign

0.18

T;T

Eigen

Benign

-0.90

Eigen_PC

Benign

-0.85

FATHMM_MKL

Benign

0.039

LIST_S2

Benign

0.52

T;T

M_CAP

Benign

0.0030

MetaRNN

Benign

0.066

T;T

MetaSVM

Benign

-1.0

MutationAssessor

Benign

1.0

L;.

MutationTaster

Benign

1.0

N;N

PrimateAI

Benign

0.34

PROVEAN

Benign

-0.040

N;N

REVEL

Benign

0.084

Sift

Benign

0.078

T;T

Sift4G

Benign

0.49

T;T

Polyphen

0.0

B;.

Vest4

0.25

MutPred

0.43

Loss of methylation at K87 (P = 0.1353);Loss of methylation at K87 (P = 0.1353);

MVP

0.12

MPC

0.23

ClinPred

0.050

GERP RS

-0.32

Varity_R

0.15

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

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