dbSNP rs1425763250: TDG:p.Ala3Thr (chr12-103966044-G-A) – ACMG Classification: Uncertain_significance (0 pts)

Variant summary

Our verdict is Uncertain significance. The variant received 0 ACMG points: 2P and 2B. PM2BP4_Moderate

The NM_003211.6(TDG):c.7G>A(p.Ala3Thr) variant causes a missense change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.000000693 in 1,443,076 control chromosomes in the GnomAD database, with no homozygous occurrence. In-silico tool predicts a benign outcome for this variant. 14/22 in silico tools predict a benign outcome for this variant. No clinical diagnostic laboratories have submitted clinical-significance assessments for this variant to ClinVar. Another variant affecting the same amino acid position, but resulting in a different missense (i.e. A3P) has been classified as Uncertain significance.

Frequency

Genomes: not found (cov: 34)

Exomes 𝑓: 6.9e-7 ( 0 hom. )

Consequence

TDG
NM_003211.6 missense

Scores

Clinical Significance

Not reported in ClinVar

Conservation

PhyloP100: 0.919

Publications

0 publications found

Variant links:

Genes affected

TDG (HGNC:11700): (thymine DNA glycosylase) The protein encoded by this gene belongs to the TDG/mug DNA glycosylase family. Thymine-DNA glycosylase (TDG) removes thymine moieties from G/T mismatches by hydrolyzing the carbon-nitrogen bond between the sugar-phosphate backbone of DNA and the mispaired thymine. With lower activity, this enzyme also removes thymine from C/T and T/T mispairings. TDG can also remove uracil and 5-bromouracil from mispairings with guanine. This enzyme plays a central role in cellular defense against genetic mutation caused by the spontaneous deamination of 5-methylcytosine and cytosine. This gene may have a pseudogene in the p arm of chromosome 12. [provided by RefSeq, Jul 2008]

TDG links:

ENSG00000288744 (HGNC:):

ENSG00000288744 links:

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ACMG classification

Classification was made for transcript

Our verdict: Uncertain_significance. The variant received 0 ACMG points.

PM2

Very rare variant in population databases, with high coverage;

BP4

Computational evidence support a benign effect (MetaRNN=0.1255449).

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	MANE	Protein	UniProt
TDG	NM_003211.6 link	c.7G>A	p.Ala3Thr	missense_variant	Exon 1 of 10	ENST00000392872.8	NP_003202.3	Q13569B4E127
TDG	NM_001363612.2 link	c.-280G>A		5_prime_UTR_variant	Exon 1 of 9		NP_001350541.1

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	TSL	MANE	Protein	Appris	UniProt
TDG	ENST00000392872.8 link	c.7G>A	p.Ala3Thr	missense_variant	Exon 1 of 10	1	NM_003211.6	ENSP00000376611.3		Q13569

Frequencies

GnomAD3 genomes

Cov.:

GnomAD4 exome

AF:

6.93e-7

AC:

AN:

1443076

Hom.:

Cov.:

AF XY:

0.00

AC XY:

AN XY:

716906

show subpopulations

⚠️ The allele balance in gnomAD version 4 Exomes is significantly skewed from the expected value of 0.5.

African (AFR)

AF:

0.00

AC:

AN:

32444

American (AMR)

AF:

0.00

AC:

AN:

42686

Ashkenazi Jewish (ASJ)

AF:

0.00

AC:

AN:

25456

East Asian (EAS)

AF:

0.00

AC:

AN:

38424

South Asian (SAS)

AF:

0.00

AC:

AN:

84160

European-Finnish (FIN)

AF:

0.00

AC:

AN:

51026

Middle Eastern (MID)

AF:

0.00

AC:

AN:

5694

European-Non Finnish (NFE)

AF:

9.06e-7

AC:

AN:

1103696

Other (OTH)

AF:

0.00

AC:

AN:

59490

⚠️ The allele balance in gnomAD4 Exomes is highly skewed from 0.5 (p-value = 0.000000), which strongly suggests a high chance of mosaicism in these individuals.

Allele Balance Distribution

Red line indicates average allele balance

Average allele balance: 0.375

Heterozygous variant carriers

0.00

0.20

0.40

0.60

0.80

0.95

Allele balance

GnomAD4 genome

Cov.:

Alfa

AF:

0.00

Hom.:

Bravo

AF:

0.00000378

ClinVar

Not reported in ClinVar

Computational scores

Source: dbNSFP v4.3

Name

Calibrated prediction

Score

Prediction

AlphaMissense

Benign

0.074

BayesDel_addAF

Benign

-0.19

BayesDel_noAF

Benign

-0.50

CADD

Benign

(source)

DANN

Uncertain

1.0

DEOGEN2

Benign

0.068

T;T

Eigen

Benign

-0.40

Eigen_PC

Benign

-0.29

FATHMM_MKL

Uncertain

0.86

LIST_S2

Benign

0.63

T;T

M_CAP

Uncertain

0.13

MetaRNN

Benign

0.13

T;T

MetaSVM

Benign

-1.0

MutationAssessor

Benign

1.0

L;.

PhyloP100

0.92

PrimateAI

Benign

0.44

PROVEAN

Benign

-0.59

N;N

REVEL

Benign

0.019

Sift

Benign

0.037

D;T

Sift4G

Uncertain

0.059

T;T

Polyphen

0.0010

B;.

Vest4

0.12

MutPred

0.19

Gain of relative solvent accessibility (P = 0.0215);Gain of relative solvent accessibility (P = 0.0215);

MVP

0.76

MPC

0.56

ClinPred

0.62

GERP RS

2.5

PromoterAI

-0.0097

Neutral

(source)

RBP_binding_hub_radar

0.0

RBP_regulation_power_radar

1.6

Varity_R

0.081

gMVP

0.48

Mutation Taster

=289/11

polymorphism

(source)

Splicing

Name

Calibrated prediction

Score

Prediction

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

You must be logged in to view publications. This limit was set because tens of millions (!) of queries from AI bots are generated daily.

Variant summary

Frequency

Consequence

Scores

Clinical Significance

Conservation

Publications

ACMG classification

Transcripts

RefSeq

Ensembl

Frequencies

ClinVar

Computational scores

Splicing

Publications

Other links and lift over