NM_003211.6:c.985G>A

Variant names:

• chr12-103985623-G-A
• rs776490263
• NM_003211.6:c.985G>A

Variant summary

Our verdict is Uncertain significance. The variant received 0 ACMG points: 2P and 2B. PM2 BP4_Moderate

The NM_003211.6(TDG):​c.985G>A​(p.Val329Ile) variant causes a missense change. The variant allele was found at a frequency of 0.000031 in 1,613,904 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. Variant has been reported in ClinVar as Uncertain significance (★).

• Frequency:
  • Genomes: 𝑓 0.000046 (0 hom., cov: 34)
  • Exomes 𝑓: 0.000029 (0 hom.)
• Consequence: TDG NM_003211.6 missense
• Clinical Significance: Uncertain significance criteria provided, single submitter U:1
• Conservation: PhyloP100: 6.31
• Publications: 1 publications found

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]

ACMG classification

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=0.15066198).

Variant Effect in Transcripts

ACMG analysis was done for transcript: NM_003211.6. You can select a different transcript below to see updated ACMG assignments.

RefSeq Transcripts

Sel.	Gene	Transcript	Tags	HGVSc	HGVSp	Effect	Exon Rank	Protein	UniProt
	TDG	NM_003211.6	MANE Select	c.985G>A	p.Val329Ile	missense	Exon 9 of 10	NP_003202.3
	TDG	NM_001363612.2		c.556G>A	p.Val186Ile	missense	Exon 8 of 9	NP_001350541.1	B4E127

Ensembl Transcripts

Sel.	Gene	Transcript	Tags	HGVSc	HGVSp	Effect	Exon Rank	Protein	UniProt
	TDG	ENST00000392872.8	TSL:1 MANE Select	c.985G>A	p.Val329Ile	missense	Exon 9 of 10	ENSP00000376611.3	Q13569
	TDG	ENST00000266775.13	TSL:1	c.973G>A	p.Val325Ile	missense	Exon 10 of 11	ENSP00000266775.9	G8JL98
	TDG	ENST00000544861.5	TSL:2	c.556G>A	p.Val186Ile	missense	Exon 8 of 9	ENSP00000445899.1	B4E127

Frequencies

GnomAD3 genomes AF: 0.0000460 AC: 7 AN: 152272 Hom.: 0 Cov.: 34

Gnomad AFR AF: 0.0000241

Gnomad AMI AF: 0.00

Gnomad AMR AF: 0.000262

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: 0.0000199 AC: 5 AN: 250730 AF XY: 0.0000148

Gnomad AFR exome AF: 0.00

Gnomad AMR exome AF: 0.0000875

Gnomad ASJ exome AF: 0.00

Gnomad EAS exome AF: 0.00

Gnomad FIN exome AF: 0.00

Gnomad NFE exome AF: 0.00000881

Gnomad OTH exome AF: 0.000164

GnomAD4 exome AF: 0.0000294 AC: 43 AN: 1461632 Hom.: 0 Cov.: 49 AF XY: 0.0000275 AC XY: 20 AN XY: 727130

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

African (AFR) AF: 0.00 AC: 0 AN: 33480

American (AMR) AF: 0.0000895 AC: 4 AN: 44712

Ashkenazi Jewish (ASJ) AF: 0.00 AC: 0 AN: 26128

East Asian (EAS) AF: 0.00 AC: 0 AN: 39692

South Asian (SAS) AF: 0.00 AC: 0 AN: 86228

European-Finnish (FIN) AF: 0.00 AC: 0 AN: 53418

Middle Eastern (MID) AF: 0.00 AC: 0 AN: 5764

European-Non Finnish (NFE) AF: 0.0000342 AC: 38 AN: 1111826

Other (OTH) AF: 0.0000166 AC: 1 AN: 60384

⚠️ The allele balance in gnomAD4 Exomes is highly skewed from 0.5 (p-value = 0), which strongly suggests a high chance of mosaicism in these individuals.

GnomAD4 genome AF: 0.0000460 AC: 7 AN: 152272 Hom.: 0 Cov.: 34 AF XY: 0.0000538 AC XY: 4 AN XY: 74400

African (AFR) AF: 0.0000241 AC: 1 AN: 41476

American (AMR) AF: 0.000262 AC: 4 AN: 15290

Ashkenazi Jewish (ASJ) AF: 0.00 AC: 0 AN: 3472

East Asian (EAS) AF: 0.00 AC: 0 AN: 5206

South Asian (SAS) AF: 0.00 AC: 0 AN: 4836

European-Finnish (FIN) AF: 0.00 AC: 0 AN: 10624

Middle Eastern (MID) AF: 0.00 AC: 0 AN: 316

European-Non Finnish (NFE) AF: 0.0000294 AC: 2 AN: 68046

Other (OTH) AF: 0.00 AC: 0 AN: 2094

Alfa AF: 0.0000434 Hom.: 0

ExAC AF: 0.0000165 AC: 2

ClinVar

ClinVar submissions

Significance: Uncertain significance

Revision: criteria provided, single submitter

Pathogenic	VUS	Benign	Condition
-	1	-	not specified (1)

Computational scores

Source: dbNSFP v4.9

Name	Calibrated prediction	Score	Prediction
AlphaMissense	Benign	0.081
BayesDel_addAF	Benign	-0.38	T
BayesDel_noAF	Benign	-0.59
CADD	Benign	20
DANN	Uncertain	0.98
DEOGEN2	Benign	0.034	T
Eigen	Benign	-0.12
Eigen_PC	Benign	0.081
FATHMM_MKL	Uncertain	0.96	D
LIST_S2	Uncertain	0.94	D
M_CAP	Benign	0.0017	T
MetaRNN	Benign	0.15	T
MetaSVM	Benign	-1.1	T
MutationAssessor	Benign	1.7	L
PhyloP100		6.3
PrimateAI	Benign	0.42	T
PROVEAN	Benign	-0.070	N
REVEL	Benign	0.046
Sift	Benign	0.39	T
Sift4G	Benign	0.54	T
Polyphen		0.0020	B
Vest4		0.19
MutPred		0.14		Gain of ubiquitination at K325 (P = 0.1008)
MVP		0.47
MPC		0.44
ClinPred		0.34	T
GERP RS		4.9
RBP_binding_hub_radar		0.0
RBP_regulation_power_radar		1.7
Varity_R		0.048
gMVP		0.41
Mutation Taster		=78/22	polymorphism

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

Other links and lift over

dbSNP: rs776490263; hg19: chr12-104379401;