rs35807866

Variant summary

Our verdict is Benign. Variant got -15 ACMG points: 0P and 15B. BP4_ModerateBP6_Very_StrongBP7BS1

The NM_018319.4(TDP1):​c.537C>T​(p.Asn179=) variant causes a synonymous change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.000455 in 1,614,012 control chromosomes in the GnomAD database, including 2 homozygotes. In-silico tool predicts a benign outcome for this variant. Variant has been reported in ClinVar as Benign (★★).

Frequency

Genomes: 𝑓 0.0025 ( 1 hom., cov: 32)
Exomes 𝑓: 0.00024 ( 1 hom. )

Consequence

TDP1
NM_018319.4 synonymous

Scores

2

Clinical Significance

Benign criteria provided, multiple submitters, no conflicts B:3

Conservation

PhyloP100: 1.64
Variant links:
Genes affected
TDP1 (HGNC:18884): (tyrosyl-DNA phosphodiesterase 1) The protein encoded by this gene is involved in repairing stalled topoisomerase I-DNA complexes by catalyzing the hydrolysis of the phosphodiester bond between the tyrosine residue of topoisomerase I and the 3-prime phosphate of DNA. This protein may also remove glycolate from single-stranded DNA containing 3-prime phosphoglycolate, suggesting a role in repair of free-radical mediated DNA double-strand breaks. This gene is a member of the phospholipase D family and contains two PLD phosphodiesterase domains. Mutations in this gene are associated with the disease spinocerebellar ataxia with axonal neuropathy (SCAN1). [provided by RefSeq, Aug 2016]

Genome browser will be placed here

ACMG classification

Classification made for transcript

Verdict is Benign. Variant got -15 ACMG points.

BP4
Computational evidence support a benign effect (BayesDel_noAF=-0.43).
BP6
Variant 14-89963651-C-T is Benign according to our data. Variant chr14-89963651-C-T is described in ClinVar as [Benign]. Clinvar id is 448656.Status of the report is criteria_provided_multiple_submitters_no_conflicts, 2 stars. Variant chr14-89963651-C-T is described in Lovd as [Benign].
BP7
Synonymous conserved (PhyloP=1.64 with no splicing effect.
BS1
Variant frequency is greater than expected in population afr. gnomad4 allele frequency = 0.00252 (383/152286) while in subpopulation AFR AF= 0.00895 (372/41548). AF 95% confidence interval is 0.0082. There are 1 homozygotes in gnomad4. There are 177 alleles in male gnomad4 subpopulation. Median coverage is 32. This position pass quality control queck.

Transcripts

RefSeq

Gene Transcript HGVSc HGVSp Effect #exon/exons MANE UniProt
TDP1NM_018319.4 linkuse as main transcriptc.537C>T p.Asn179= synonymous_variant 3/17 ENST00000335725.9

Ensembl

Gene Transcript HGVSc HGVSp Effect #exon/exons TSL MANE Appris UniProt
TDP1ENST00000335725.9 linkuse as main transcriptc.537C>T p.Asn179= synonymous_variant 3/171 NM_018319.4 P1Q9NUW8-1

Frequencies

GnomAD3 genomes
AF:
0.00252
AC:
383
AN:
152168
Hom.:
1
Cov.:
32
show subpopulations
Gnomad AFR
AF:
0.00898
Gnomad AMI
AF:
0.00
Gnomad AMR
AF:
0.000654
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:
0.00
Gnomad OTH
AF:
0.000478
GnomAD3 exomes
AF:
0.000650
AC:
162
AN:
249418
Hom.:
1
AF XY:
0.000370
AC XY:
50
AN XY:
135052
show subpopulations
Gnomad AFR exome
AF:
0.00894
Gnomad AMR exome
AF:
0.000376
Gnomad ASJ exome
AF:
0.00
Gnomad EAS exome
AF:
0.00
Gnomad SAS exome
AF:
0.00
Gnomad FIN exome
AF:
0.0000462
Gnomad NFE exome
AF:
0.00000895
Gnomad OTH exome
AF:
0.000327
GnomAD4 exome
AF:
0.000241
AC:
352
AN:
1461726
Hom.:
1
Cov.:
34
AF XY:
0.000173
AC XY:
126
AN XY:
727168
show subpopulations
Gnomad4 AFR exome
AF:
0.00884
Gnomad4 AMR exome
AF:
0.000313
Gnomad4 ASJ exome
AF:
0.00
Gnomad4 EAS exome
AF:
0.00
Gnomad4 SAS exome
AF:
0.00
Gnomad4 FIN exome
AF:
0.0000562
Gnomad4 NFE exome
AF:
0.00000180
Gnomad4 OTH exome
AF:
0.000596
GnomAD4 genome
AF:
0.00251
AC:
383
AN:
152286
Hom.:
1
Cov.:
32
AF XY:
0.00238
AC XY:
177
AN XY:
74464
show subpopulations
Gnomad4 AFR
AF:
0.00895
Gnomad4 AMR
AF:
0.000654
Gnomad4 ASJ
AF:
0.00
Gnomad4 EAS
AF:
0.00
Gnomad4 SAS
AF:
0.00
Gnomad4 FIN
AF:
0.00
Gnomad4 NFE
AF:
0.00
Gnomad4 OTH
AF:
0.000473
Alfa
AF:
0.00144
Hom.:
2
Bravo
AF:
0.00309

ClinVar

Significance: Benign
Submissions summary: Benign:3
Revision: criteria provided, multiple submitters, no conflicts
LINK: link

Submissions by phenotype

not provided Benign:2
Benign, criteria provided, single submitterclinical testingLabcorp Genetics (formerly Invitae), LabcorpJun 27, 2018- -
Benign, criteria provided, single submitternot providedBreakthrough Genomics, Breakthrough Genomics-- -
not specified Benign:1
Benign, criteria provided, single submitterclinical testingAthena DiagnosticsApr 28, 2017- -

Computational scores

Source: dbNSFP v4.3

Name
Calibrated prediction
Score
Prediction
BayesDel_noAF
Benign
-0.43
CADD
Benign
6.9
DANN
Benign
0.46

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

LitVar

Below is the list of publications found by LitVar. It may be empty.

Other links and lift over

dbSNP: rs35807866; hg19: chr14-90429995; COSMIC: COSV105903437; COSMIC: COSV105903437; API