rs116054286

Variant summary

Our verdict is Benign. The variant received -20 ACMG points: 0P and 20B. BP4_StrongBP6_Very_StrongBS1BS2

The NM_006440.5(TXNRD2):​c.529-6C>T variant causes a splice region, intron change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.000912 in 1,612,912 control chromosomes in the GnomAD database, including 14 homozygotes. In-silico tool predicts a benign outcome for this variant. 3/3 splice prediction tools predict no significant impact on normal splicing. Variant has been reported in ClinVar as Likely benign (★★).

Frequency

Genomes: 𝑓 0.0048 ( 6 hom., cov: 32)
Exomes 𝑓: 0.00050 ( 8 hom. )

Consequence

TXNRD2
NM_006440.5 splice_region, intron

Scores

2
Splicing: ADA: 0.00001717
2

Clinical Significance

Benign/Likely benign criteria provided, multiple submitters, no conflicts B:4

Conservation

PhyloP100: 0.627

Publications

1 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)

Genome browser will be placed here

ACMG classification

Classification was made for transcript

Our verdict: Benign. The variant received -20 ACMG points.

BP4
Computational evidence support a benign effect (BayesDel_noAF=-0.9).
BP6
Variant 22-19915282-G-A is Benign according to our data. Variant chr22-19915282-G-A is described in ClinVar as Benign/Likely_benign. ClinVar VariationId is 390224.Status of the report is criteria_provided_multiple_submitters_no_conflicts, 2 stars.
BS1
Variant frequency is greater than expected in population afr. GnomAd4 allele frequency = 0.00485 (738/152278) while in subpopulation AFR AF = 0.0171 (712/41544). AF 95% confidence interval is 0.0161. There are 6 homozygotes in GnomAd4. There are 311 alleles in the male GnomAd4 subpopulation. Median coverage is 32. This position passed quality control check.
BS2
High Homozygotes in GnomAd4 at 6 AD,AR,Unknown gene

Transcripts

RefSeq

Gene Transcript HGVSc HGVSp Effect Exon rank MANE Protein UniProt
TXNRD2NM_006440.5 linkc.529-6C>T splice_region_variant, intron_variant Intron 6 of 17 ENST00000400521.7 NP_006431.2 Q9NNW7-1

Ensembl

Gene Transcript HGVSc HGVSp Effect Exon rank TSL MANE Protein Appris UniProt
TXNRD2ENST00000400521.7 linkc.529-6C>T splice_region_variant, intron_variant Intron 6 of 17 1 NM_006440.5 ENSP00000383365.1 Q9NNW7-1

Frequencies

GnomAD3 genomes
AF:
0.00484
AC:
736
AN:
152160
Hom.:
6
Cov.:
32
show subpopulations
Gnomad AFR
AF:
0.0171
Gnomad AMI
AF:
0.00
Gnomad AMR
AF:
0.00105
Gnomad ASJ
AF:
0.00
Gnomad EAS
AF:
0.000385
Gnomad SAS
AF:
0.00
Gnomad FIN
AF:
0.00
Gnomad MID
AF:
0.00
Gnomad NFE
AF:
0.0000441
Gnomad OTH
AF:
0.00239
GnomAD2 exomes
AF:
0.00115
AC:
283
AN:
246100
AF XY:
0.000824
show subpopulations
Gnomad AFR exome
AF:
0.0169
Gnomad AMR exome
AF:
0.000643
Gnomad ASJ exome
AF:
0.00
Gnomad EAS exome
AF:
0.00
Gnomad FIN exome
AF:
0.00
Gnomad NFE exome
AF:
0.00000895
Gnomad OTH exome
AF:
0.000666
GnomAD4 exome
AF:
0.000502
AC:
733
AN:
1460634
Hom.:
8
Cov.:
31
AF XY:
0.000427
AC XY:
310
AN XY:
726378
show subpopulations
African (AFR)
AF:
0.0194
AC:
648
AN:
33470
American (AMR)
AF:
0.000696
AC:
31
AN:
44542
Ashkenazi Jewish (ASJ)
AF:
0.00
AC:
0
AN:
26114
East Asian (EAS)
AF:
0.0000252
AC:
1
AN:
39682
South Asian (SAS)
AF:
0.0000349
AC:
3
AN:
85860
European-Finnish (FIN)
AF:
0.00
AC:
0
AN:
53334
Middle Eastern (MID)
AF:
0.000520
AC:
3
AN:
5768
European-Non Finnish (NFE)
AF:
0.00000630
AC:
7
AN:
1111502
Other (OTH)
AF:
0.000663
AC:
40
AN:
60362
Allele Balance Distribution
Red line indicates average allele balance
Average allele balance: 0.458
Heterozygous variant carriers
0
38
76
114
152
190
0.00
0.20
0.40
0.60
0.80
0.95
Allele balance

Age Distribution

Exome Het
Exome Hom
Variant carriers
0
24
48
72
96
120
<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:
0.00485
AC:
738
AN:
152278
Hom.:
6
Cov.:
32
AF XY:
0.00418
AC XY:
311
AN XY:
74460
show subpopulations
African (AFR)
AF:
0.0171
AC:
712
AN:
41544
American (AMR)
AF:
0.00105
AC:
16
AN:
15302
Ashkenazi Jewish (ASJ)
AF:
0.00
AC:
0
AN:
3468
East Asian (EAS)
AF:
0.000386
AC:
2
AN:
5188
South Asian (SAS)
AF:
0.00
AC:
0
AN:
4822
European-Finnish (FIN)
AF:
0.00
AC:
0
AN:
10608
Middle Eastern (MID)
AF:
0.00
AC:
0
AN:
294
European-Non Finnish (NFE)
AF:
0.0000441
AC:
3
AN:
68026
Other (OTH)
AF:
0.00237
AC:
5
AN:
2114
Allele Balance Distribution
Red line indicates average allele balance
Average allele balance: 0.500
Heterozygous variant carriers
0
34
68
101
135
169
0.00
0.20
0.40
0.60
0.80
0.95
Allele balance

Age Distribution

Genome Het
Genome Hom
Variant carriers
0
10
20
30
40
50
<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:
0.00255
Hom.:
0
Bravo
AF:
0.00548
Asia WGS
AF:
0.00173
AC:
6
AN:
3478

ClinVar

Significance: Benign/Likely benign
Submissions summary: Benign:4
Revision: criteria provided, multiple submitters, no conflicts
LINK: link

Submissions by phenotype

not provided Benign:2
Nov 12, 2018
GeneDx
Significance:Benign
Review Status:criteria provided, single submitter
Collection Method:clinical testing

- -

-
Breakthrough Genomics, Breakthrough Genomics
Significance:Benign
Review Status:criteria provided, single submitter
Collection Method:not provided

- -

Glucocorticoid deficiency 5 Benign:1
May 02, 2022
Fulgent Genetics, Fulgent Genetics
Significance:Likely benign
Review Status:criteria provided, single submitter
Collection Method:clinical testing

- -

Primary dilated cardiomyopathy Benign:1
Feb 02, 2025
Labcorp Genetics (formerly Invitae), Labcorp
Significance:Benign
Review Status:criteria provided, single submitter
Collection Method:clinical testing

- -

Computational scores

Source: dbNSFP v4.3

Name
Calibrated prediction
Score
Prediction
BayesDel_noAF
Benign
-0.90
CADD
Benign
1.3
DANN
Benign
0.46
PhyloP100
0.63
Mutation Taster
=100/0
polymorphism

Splicing

Name
Calibrated prediction
Score
Prediction
dbscSNV1_ADA
Benign
0.000017
dbscSNV1_RF
Benign
0.0040
SpliceAI score (max)
0.0
Details are displayed if max score is > 0.2

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

Publications

Other links and lift over

dbSNP: rs116054286; hg19: chr22-19902805; API