rs757160421

Variant summary

Our verdict is Benign. The variant received -12 ACMG points: 0P and 12B. BP4_StrongBP6_Very_Strong

The NM_006440.5(TXNRD2):​c.683-6C>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 0.0000912 in 1,557,116 control chromosomes in the GnomAD database, including 1 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 0.00019 ( 0 hom., cov: 33)
Exomes 𝑓: 0.000080 ( 1 hom. )

Consequence

TXNRD2
NM_006440.5 splice_region, intron

Scores

2
Splicing: ADA: 0.00009678
2

Clinical Significance

Benign/Likely benign criteria provided, multiple submitters, no conflicts B:3

Conservation

PhyloP100: 1.21

Publications

0 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 -12 ACMG points.

BP4
Computational evidence support a benign effect (BayesDel_noAF=-0.91).
BP6
Variant 22-19898136-G-A is Benign according to our data. Variant chr22-19898136-G-A is described in ClinVar as Benign/Likely_benign. ClinVar VariationId is 454287.Status of the report is criteria_provided_multiple_submitters_no_conflicts, 2 stars.

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

Selected
GeneTranscriptTagsHGVScHGVSpEffectExon RankProteinUniProt
TXNRD2
NM_006440.5
MANE Select
c.683-6C>T
splice_region intron
N/ANP_006431.2
TXNRD2
NM_001352300.2
c.680-6C>T
splice_region intron
N/ANP_001339229.1
TXNRD2
NM_001352301.2
c.593-6C>T
splice_region intron
N/ANP_001339230.1

Ensembl Transcripts

Selected
GeneTranscriptTagsHGVScHGVSpEffectExon RankProteinUniProt
TXNRD2
ENST00000400521.7
TSL:1 MANE Select
c.683-6C>T
splice_region intron
N/AENSP00000383365.1
TXNRD2
ENST00000400519.6
TSL:1
c.680-6C>T
splice_region intron
N/AENSP00000383363.1
TXNRD2
ENST00000400518.5
TSL:1
c.593-6C>T
splice_region intron
N/AENSP00000383362.1

Frequencies

GnomAD3 genomes
AF:
0.000190
AC:
29
AN:
152240
Hom.:
0
Cov.:
33
show subpopulations
Gnomad AFR
AF:
0.0000724
Gnomad AMI
AF:
0.00
Gnomad AMR
AF:
0.00157
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:
0.0000294
Gnomad OTH
AF:
0.00
GnomAD2 exomes
AF:
0.000230
AC:
37
AN:
160874
AF XY:
0.000199
show subpopulations
Gnomad AFR exome
AF:
0.000118
Gnomad AMR exome
AF:
0.00107
Gnomad ASJ exome
AF:
0.000466
Gnomad EAS exome
AF:
0.00
Gnomad FIN exome
AF:
0.00
Gnomad NFE exome
AF:
0.0000312
Gnomad OTH exome
AF:
0.000671
GnomAD4 exome
AF:
0.0000804
AC:
113
AN:
1404876
Hom.:
1
Cov.:
32
AF XY:
0.0000879
AC XY:
61
AN XY:
693606
show subpopulations
African (AFR)
AF:
0.0000314
AC:
1
AN:
31852
American (AMR)
AF:
0.000875
AC:
32
AN:
36556
Ashkenazi Jewish (ASJ)
AF:
0.000159
AC:
4
AN:
25220
East Asian (EAS)
AF:
0.00
AC:
0
AN:
36086
South Asian (SAS)
AF:
0.00
AC:
0
AN:
79534
European-Finnish (FIN)
AF:
0.00
AC:
0
AN:
49140
Middle Eastern (MID)
AF:
0.00
AC:
0
AN:
5702
European-Non Finnish (NFE)
AF:
0.0000610
AC:
66
AN:
1082550
Other (OTH)
AF:
0.000172
AC:
10
AN:
58236
Allele Balance Distribution
Red line indicates average allele balance
Average allele balance: 0.459
Heterozygous variant carriers
0
6
13
19
26
32
0.00
0.20
0.40
0.60
0.80
0.95
Allele balance

Age Distribution

Exome Het
Variant carriers
0
4
8
12
16
20
<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:
0.000190
AC:
29
AN:
152240
Hom.:
0
Cov.:
33
AF XY:
0.000269
AC XY:
20
AN XY:
74368
show subpopulations
African (AFR)
AF:
0.0000724
AC:
3
AN:
41456
American (AMR)
AF:
0.00157
AC:
24
AN:
15286
Ashkenazi Jewish (ASJ)
AF:
0.00
AC:
0
AN:
3472
East Asian (EAS)
AF:
0.00
AC:
0
AN:
5202
South Asian (SAS)
AF:
0.00
AC:
0
AN:
4834
European-Finnish (FIN)
AF:
0.00
AC:
0
AN:
10620
Middle Eastern (MID)
AF:
0.00
AC:
0
AN:
316
European-Non Finnish (NFE)
AF:
0.0000294
AC:
2
AN:
68048
Other (OTH)
AF:
0.00
AC:
0
AN:
2094
Allele Balance Distribution
Red line indicates average allele balance
Average allele balance: 0.487
Heterozygous variant carriers
0
2
4
5
7
9
0.00
0.20
0.40
0.60
0.80
0.95
Allele balance

Age Distribution

Genome Het
Variant carriers
0
2
4
6
8
10
<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:
0.0000676
Hom.:
0
Bravo
AF:
0.000238

ClinVar

ClinVar submissions as Germline

Significance:Benign/Likely benign
Revision:criteria provided, multiple submitters, no conflicts
View on ClinVar
Pathogenic
VUS
Benign
Condition
-
-
1
not provided (1)
-
-
1
Primary dilated cardiomyopathy (1)
-
-
1
TXNRD2-related disorder (1)

Computational scores

Source: dbNSFP v4.9

Name
Calibrated prediction
Score
Prediction
BayesDel_noAF
Benign
-0.91
CADD
Benign
2.0
DANN
Benign
0.56
PhyloP100
1.2
RBP_binding_hub_radar
0.0
RBP_regulation_power_radar
1.1
Mutation Taster
=100/0
polymorphism

Splicing

Name
Calibrated prediction
Score
Prediction
dbscSNV1_ADA
Benign
0.000097
dbscSNV1_RF
Benign
0.048
SpliceAI score (max)
0.14
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: rs757160421; hg19: chr22-19885659; API