rs2233518

Variant summary

Our verdict is Benign. The variant received -20 ACMG points: 0P and 20B. BP4_StrongBP6_Very_StrongBS1BS2

The NM_002528.7(NTHL1):​c.116-17C>T variant causes a intron change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.00188 in 1,598,958 control chromosomes in the GnomAD database, including 40 homozygotes. In-silico tool predicts a benign outcome for this variant. Variant has been reported in ClinVar as Benign (★★). There are indicators that this mutation may affect the branch point..

Frequency

Genomes: 𝑓 0.0098 ( 21 hom., cov: 32)
Exomes 𝑓: 0.0010 ( 19 hom. )

Consequence

NTHL1
NM_002528.7 intron

Scores

2

Clinical Significance

Benign criteria provided, multiple submitters, no conflicts B:7

Conservation

PhyloP100: -0.802

Publications

1 publications found
Variant links:
Genes affected
NTHL1 (HGNC:8028): (nth like DNA glycosylase 1) The protein encoded by this gene is a DNA N-glycosylase of the endonuclease III family. Like a similar protein in E. coli, the encoded protein has DNA glycosylase activity on DNA substrates containing oxidized pyrimidine residues and has apurinic/apyrimidinic lyase activity. [provided by RefSeq, Oct 2008]
NTHL1 Gene-Disease associations (from GenCC):
  • familial adenomatous polyposis 3
    Inheritance: AR Classification: DEFINITIVE, STRONG, SUPPORTIVE Submitted by: Labcorp Genetics (formerly Invitae), Orphanet, Genomics England PanelApp, Ambry Genetics
  • NTHL1-deficiency tumor predisposition syndrome
    Inheritance: AR Classification: DEFINITIVE Submitted by: ClinGen
  • breast cancer
    Inheritance: AR Classification: LIMITED Submitted by: Ambry Genetics
  • meningioma
    Inheritance: AR Classification: LIMITED Submitted by: Ambry Genetics

Genome browser will be placed here

ACMG classification

Classification was made for transcript

Our verdict: Benign. The variant received -20 ACMG points.

BP4
This position, referring to a specific DNA site, is a probable branch point but is likely benign (scored 2 / 10, using the threshold of <=3). The score ranges from 0 to 10, with values ≤3 considered benign and >5 classified as pathogenic. Computational evidence support a benign effect (BayesDel_noAF=-0.83).
BP6
Variant 16-2046383-G-A is Benign according to our data. Variant chr16-2046383-G-A is described in ClinVar as Benign. ClinVar VariationId is 1284832.Status of the report is criteria_provided_multiple_submitters_no_conflicts, 2 stars.
BS1
Variant frequency is greater than expected in population afr. GnomAd4 allele frequency = 0.0098 (1493/152300) while in subpopulation AFR AF = 0.0341 (1417/41544). AF 95% confidence interval is 0.0326. There are 21 homozygotes in GnomAd4. There are 722 alleles in the male GnomAd4 subpopulation. Median coverage is 32. This position passed quality control check.
BS2
High Homozygotes in GnomAd4 at 21 AR gene

Transcripts

RefSeq

Gene Transcript HGVSc HGVSp Effect Exon rank MANE Protein UniProt
NTHL1NM_002528.7 linkc.116-17C>T intron_variant Intron 1 of 5 ENST00000651570.2 NP_002519.2 P78549-2E5KTI5
NTHL1XM_047434171.1 linkc.-181C>T 5_prime_UTR_variant Exon 2 of 6 XP_047290127.1
NTHL1NM_001318193.2 linkc.116-17C>T intron_variant Intron 1 of 4 NP_001305122.2 P78549
NTHL1NM_001318194.2 linkc.-63-17C>T intron_variant Intron 1 of 5 NP_001305123.1 P78549

Ensembl

Gene Transcript HGVSc HGVSp Effect Exon rank TSL MANE Protein Appris UniProt
NTHL1ENST00000651570.2 linkc.116-17C>T intron_variant Intron 1 of 5 NM_002528.7 ENSP00000498421.1 P78549-2

Frequencies

GnomAD3 genomes
AF:
0.00978
AC:
1488
AN:
152182
Hom.:
21
Cov.:
32
show subpopulations
Gnomad AFR
AF:
0.0341
Gnomad AMI
AF:
0.00
Gnomad AMR
AF:
0.00327
Gnomad ASJ
AF:
0.00
Gnomad EAS
AF:
0.00
Gnomad SAS
AF:
0.000414
Gnomad FIN
AF:
0.00
Gnomad MID
AF:
0.00316
Gnomad NFE
AF:
0.000118
Gnomad OTH
AF:
0.00718
GnomAD2 exomes
AF:
0.00267
AC:
656
AN:
245272
AF XY:
0.00193
show subpopulations
Gnomad AFR exome
AF:
0.0357
Gnomad AMR exome
AF:
0.00157
Gnomad ASJ exome
AF:
0.00
Gnomad EAS exome
AF:
0.00
Gnomad FIN exome
AF:
0.00
Gnomad NFE exome
AF:
0.000153
Gnomad OTH exome
AF:
0.00232
GnomAD4 exome
AF:
0.00105
AC:
1516
AN:
1446658
Hom.:
19
Cov.:
31
AF XY:
0.000906
AC XY:
650
AN XY:
717606
show subpopulations
African (AFR)
AF:
0.0347
AC:
1153
AN:
33232
American (AMR)
AF:
0.00173
AC:
77
AN:
44438
Ashkenazi Jewish (ASJ)
AF:
0.00
AC:
0
AN:
25954
East Asian (EAS)
AF:
0.00
AC:
0
AN:
39436
South Asian (SAS)
AF:
0.000140
AC:
12
AN:
85962
European-Finnish (FIN)
AF:
0.00
AC:
0
AN:
49384
Middle Eastern (MID)
AF:
0.00158
AC:
9
AN:
5706
European-Non Finnish (NFE)
AF:
0.000131
AC:
144
AN:
1102718
Other (OTH)
AF:
0.00202
AC:
121
AN:
59828
Allele Balance Distribution
Red line indicates average allele balance
Average allele balance: 0.497
Heterozygous variant carriers
0
81
162
243
324
405
0.00
0.20
0.40
0.60
0.80
0.95
Allele balance

Age Distribution

Exome Het
Exome Hom
Variant carriers
0
40
80
120
160
200
<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:
0.00980
AC:
1493
AN:
152300
Hom.:
21
Cov.:
32
AF XY:
0.00969
AC XY:
722
AN XY:
74476
show subpopulations
African (AFR)
AF:
0.0341
AC:
1417
AN:
41544
American (AMR)
AF:
0.00327
AC:
50
AN:
15308
Ashkenazi Jewish (ASJ)
AF:
0.00
AC:
0
AN:
3470
East Asian (EAS)
AF:
0.00
AC:
0
AN:
5182
South Asian (SAS)
AF:
0.000414
AC:
2
AN:
4828
European-Finnish (FIN)
AF:
0.00
AC:
0
AN:
10622
Middle Eastern (MID)
AF:
0.00340
AC:
1
AN:
294
European-Non Finnish (NFE)
AF:
0.000118
AC:
8
AN:
68028
Other (OTH)
AF:
0.00710
AC:
15
AN:
2112
Allele Balance Distribution
Red line indicates average allele balance
Average allele balance: 0.499
Heterozygous variant carriers
0
76
152
227
303
379
0.00
0.20
0.40
0.60
0.80
0.95
Allele balance

Age Distribution

Genome Het
Genome Hom
Variant carriers
0
20
40
60
80
100
<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:
0.00515
Hom.:
4
Bravo
AF:
0.0111
Asia WGS
AF:
0.000866
AC:
3
AN:
3478

ClinVar

Significance: Benign
Submissions summary: Benign:7
Revision: criteria provided, multiple submitters, no conflicts
LINK: link

Submissions by phenotype

not specified Benign:3
-
Clinical Genetics, Academic Medical Center
Significance:Benign
Review Status:no assertion criteria provided
Collection Method:clinical testing

- -

-
Joint Genome Diagnostic Labs from Nijmegen and Maastricht, Radboudumc and MUMC+
Significance:Benign
Review Status:no assertion criteria provided
Collection Method:clinical testing

- -

Mar 04, 2025
Center for Genomic Medicine, Rigshospitalet, Copenhagen University Hospital
Significance:Benign
Review Status:criteria provided, single submitter
Collection Method:clinical testing

- -

not provided Benign:2
Feb 04, 2025
Labcorp Genetics (formerly Invitae), Labcorp
Significance:Benign
Review Status:criteria provided, single submitter
Collection Method:clinical testing

- -

-
Breakthrough Genomics, Breakthrough Genomics
Significance:Benign
Review Status:criteria provided, single submitter
Collection Method:not provided

- -

Familial adenomatous polyposis 3 Benign:1
Dec 08, 2023
ARUP Laboratories, Molecular Genetics and Genomics, ARUP Laboratories
Significance:Benign
Review Status:criteria provided, single submitter
Collection Method:clinical testing

- -

NTHL1-related disorder Benign:1
Nov 13, 2023
PreventionGenetics, part of Exact Sciences
Significance:Benign
Review Status:no assertion criteria provided
Collection Method:clinical testing

This variant is classified as benign based on ACMG/AMP sequence variant interpretation guidelines (Richards et al. 2015 PMID: 25741868, with internal and published modifications). -

Computational scores

Source: dbNSFP v4.3

Name
Calibrated prediction
Score
Prediction
BayesDel_noAF
Benign
-0.83
CADD
Benign
3.1
DANN
Benign
0.81
PhyloP100
-0.80
BranchPoint Hunter
2.0
PromoterAI
0.0024
Neutral
Mutation Taster
=100/0
polymorphism

Splicing

Name
Calibrated prediction
Score
Prediction
SpliceAI score (max)
0.060
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: rs2233518; hg19: chr16-2096384; API