8-124508637-A-C

Variant names:

Variant summary

Our verdict is Uncertain significance. The variant received 3 ACMG points: 3P and 0B. PM2PP3

The NM_032026.4(TATDN1):c.441T>G(p.Phe147Leu) variant causes a missense change. The variant allele was found at a frequency of 0.00000874 in 1,601,098 control chromosomes in the GnomAD database, with no homozygous occurrence. In-silico tool predicts a pathogenic outcome for this variant. Variant has been reported in ClinVar as Uncertain significance (★).

Frequency

Genomes: 𝑓 0.0000066 ( 0 hom., cov: 33)

Exomes 𝑓: 0.0000090 ( 0 hom. )

Consequence

TATDN1
NM_032026.4 missense

Scores

Clinical Significance

Uncertain significance criteria provided, single submitter U:1

Conservation

PhyloP100: 5.36

Publications

0 publications found

Variant links:

Genes affected

TATDN1 (HGNC:24220): (TatD DNase domain containing 1) Predicted to enable 3'-5'-exodeoxyribonuclease activity. Predicted to be involved in DNA metabolic process and nucleic acid phosphodiester bond hydrolysis. Located in nucleoplasm. [provided by Alliance of Genome Resources, Apr 2022]

TATDN1 links:

MIR6844 (HGNC:50135): (microRNA 6844) microRNAs (miRNAs) are short (20-24 nt) non-coding RNAs that are involved in post-transcriptional regulation of gene expression in multicellular organisms by affecting both the stability and translation of mRNAs. miRNAs are transcribed by RNA polymerase II as part of capped and polyadenylated primary transcripts (pri-miRNAs) that can be either protein-coding or non-coding. The primary transcript is cleaved by the Drosha ribonuclease III enzyme to produce an approximately 70-nt stem-loop precursor miRNA (pre-miRNA), which is further cleaved by the cytoplasmic Dicer ribonuclease to generate the mature miRNA and antisense miRNA star (miRNA*) products. The mature miRNA is incorporated into a RNA-induced silencing complex (RISC), which recognizes target mRNAs through imperfect base pairing with the miRNA and most commonly results in translational inhibition or destabilization of the target mRNA. The RefSeq represents the predicted microRNA stem-loop. [provided by RefSeq, Sep 2009]

MIR6844 links:

Genome browser will be placed here

ACMG classification

Classification was made for transcript

Our verdict: Uncertain_significance. The variant received 3 ACMG points.

PM2

Very rare variant in population databases, with high coverage;

PP3

MetaRNN computational evidence supports a deleterious effect, 0.764

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	MANE	Protein	UniProt
TATDN1	NM_032026.4 link	c.441T>G	p.Phe147Leu	missense_variant	Exon 7 of 12	ENST00000276692.11	NP_114415.1	Q6P1N9-1

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	TSL	MANE	Protein	Appris	UniProt
TATDN1	ENST00000276692.11 link	c.441T>G	p.Phe147Leu	missense_variant	Exon 7 of 12	1	NM_032026.4	ENSP00000276692.6		Q6P1N9-1

Frequencies

GnomAD3 genomes

AF:

0.00000657

AC:

AN:

152218

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:

0.00

Gnomad MID

AF:

0.00

Gnomad NFE

AF:

0.0000147

Gnomad OTH

AF:

0.00

GnomAD2 exomes

AF:

0.00000834

AC:

AN:

239872

AF XY:

0.00000772

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 FIN exome

AF:

0.00

Gnomad NFE exome

AF:

0.0000184

Gnomad OTH exome

AF:

0.00

GnomAD4 exome

AF:

0.00000897

AC:

AN:

1448880

Hom.:

Cov.:

AF XY:

0.0000111

AC XY:

AN XY:

719456

show subpopulations

African (AFR)

AF:

0.00

AC:

AN:

32948

American (AMR)

AF:

0.00

AC:

AN:

42896

Ashkenazi Jewish (ASJ)

AF:

0.00

AC:

AN:

25762

East Asian (EAS)

AF:

0.00

AC:

AN:

39458

South Asian (SAS)

AF:

0.00

AC:

AN:

83950

European-Finnish (FIN)

AF:

0.00

AC:

AN:

53102

Middle Eastern (MID)

AF:

0.00

AC:

AN:

5468

European-Non Finnish (NFE)

AF:

0.0000109

AC:

AN:

1105470

Other (OTH)

AF:

0.0000167

AC:

AN:

59826

Allele Balance Distribution

Red line indicates average allele balance

Average allele balance: 0.510

Heterozygous variant carriers

0.00

0.20

0.40

0.60

0.80

0.95

Allele balance

GnomAD4 genome

AF:

0.00000657

AC:

AN:

152218

Hom.:

Cov.:

AF XY:

0.00

AC XY:

AN XY:

74378

show subpopulations

African (AFR)

AF:

0.00

AC:

AN:

41456

American (AMR)

AF:

0.00

AC:

AN:

15278

Ashkenazi Jewish (ASJ)

AF:

0.00

AC:

AN:

3468

East Asian (EAS)

AF:

0.00

AC:

AN:

5202

South Asian (SAS)

AF:

0.00

AC:

AN:

4834

European-Finnish (FIN)

AF:

0.00

AC:

AN:

10626

Middle Eastern (MID)

AF:

0.00

AC:

AN:

316

European-Non Finnish (NFE)

AF:

0.0000147

AC:

AN:

68038

Other (OTH)

AF:

0.00

AC:

AN:

2090

Allele Balance Distribution

Red line indicates average allele balance

Average allele balance: 0.425

Heterozygous variant carriers

0.00

0.20

0.40

0.60

0.80

0.95

Allele balance

Alfa

AF:

0.0000579

Hom.:

Bravo

AF:

0.00000756

ClinVar

Significance: Uncertain significance

Submissions summary: Uncertain:1

Revision: criteria provided, single submitter

LINK: link

Submissions by phenotype

not specified

Uncertain:1

May 26, 2025

Ambry Genetics

Significance:Uncertain significance

Review Status:criteria provided, single submitter

Collection Method:clinical testing

The c.441T>G (p.F147L) alteration is located in exon 7 (coding exon 7) of the TATDN1 gene. This alteration results from a T to G substitution at nucleotide position 441, causing the phenylalanine (F) at amino acid position 147 to be replaced by a leucine (L). 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

AlphaMissense

Pathogenic

0.99

BayesDel_addAF

Pathogenic

0.34

BayesDel_noAF

Pathogenic

0.27

CADD

Pathogenic

(source)

DANN

Uncertain

1.0

DEOGEN2

Benign

0.12

T;T;.;.;.;T;T;.

Eigen

Uncertain

0.29

Eigen_PC

Uncertain

0.34

FATHMM_MKL

Uncertain

0.95

LIST_S2

Pathogenic

1.0

D;D;D;D;D;D;D;D

M_CAP

Benign

0.025

MetaRNN

Pathogenic

0.76

D;D;D;D;D;D;D;D

MetaSVM

Benign

-0.56

MutationAssessor

Uncertain

2.8

.;M;.;.;.;.;.;.

PhyloP100

5.4

PrimateAI

Pathogenic

0.81

PROVEAN

Pathogenic

-5.9

.;D;D;D;D;.;D;D

REVEL

Uncertain

0.47

Sift

Pathogenic

0.0

.;D;D;D;D;.;D;D

Sift4G

Uncertain

0.0030

D;D;D;T;D;D;D;.

Polyphen

0.99, 0.99

.;D;.;D;.;.;.;.

Vest4

0.82

MutPred

0.76

.;Loss of methylation at K143 (P = 0.1232);.;Loss of methylation at K143 (P = 0.1232);.;Loss of methylation at K143 (P = 0.1232);.;.;

MVP

0.42

MPC

0.077

ClinPred

0.99

GERP RS

4.5

Varity_R

0.97

gMVP

0.68

Mutation Taster

=5/95

disease causing

(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

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8-124508637-A-C

Variant summary

Frequency

Consequence

Scores

Clinical Significance

Conservation

Publications

ACMG classification

Transcripts

RefSeq

Ensembl

Frequencies

Age Distribution

ClinVar

Submissions by phenotype

Computational scores

Splicing

Publications

Other links and lift over