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GeneBe

X-55006683-C-T

Variant summary

Our verdict is Benign. Variant got -10 ACMG points: 0P and 10B. BP4_StrongBP6_ModerateBS2

The NM_014481.4(APEX2):​c.805C>T​(p.His269Tyr) variant causes a missense change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.000392 in 1,165,491 control chromosomes in the GnomAD database, with no homozygous occurrence. There are 195 hemizygotes in GnomAD. In-silico tool predicts a benign outcome for this variant. 13/20 in silico tools predict a benign outcome for this variant. Variant has been reported in ClinVar as Likely benign (★). Another nucleotide change resulting in same amino acid change has been previously reported as Likely benignin UniProt.

Frequency

Genomes: 𝑓 0.00026 ( 0 hom., 10 hem., cov: 23)
Exomes 𝑓: 0.00041 ( 0 hom. 185 hem. )

Consequence

APEX2
NM_014481.4 missense

Scores

1
3
13

Clinical Significance

Likely benign criteria provided, single submitter B:1

Conservation

PhyloP100: 3.02
Variant links:
Genes affected
APEX2 (HGNC:17889): (apurinic/apyrimidinic endodeoxyribonuclease 2) Apurinic/apyrimidinic (AP) sites occur frequently in DNA molecules by spontaneous hydrolysis, by DNA damaging agents or by DNA glycosylases that remove specific abnormal bases. AP sites are pre-mutagenic lesions that can prevent normal DNA replication so the cell contains systems to identify and repair such sites. Class II AP endonucleases cleave the phosphodiester backbone 5' to the AP site. This gene encodes a protein shown to have a weak class II AP endonuclease activity. Most of the encoded protein is located in the nucleus but some is also present in mitochondria. This protein may play an important role in both nuclear and mitochondrial base excision repair. Alternatively spliced transcript variants encoding multiple isoforms have been observed for this gene. [provided by RefSeq, Nov 2012]

Genome browser will be placed here

ACMG classification

Classification made for transcript

Verdict is Benign. Variant got -10 ACMG points.

BP4
Computational evidence support a benign effect (MetaRNN=0.00992167).
BP6
Variant X-55006683-C-T is Benign according to our data. Variant chrX-55006683-C-T is described in ClinVar as [Likely_benign]. Clinvar id is 2660688.Status of the report is criteria_provided_single_submitter, 1 stars.
BS2
High Hemizygotes in GnomAd4 at 10 gene

Transcripts

RefSeq

Gene Transcript HGVSc HGVSp Effect #exon/exons MANE UniProt
APEX2NM_014481.4 linkuse as main transcriptc.805C>T p.His269Tyr missense_variant 6/6 ENST00000374987.4
APEX2NM_001271748.2 linkuse as main transcriptc.292C>T p.His98Tyr missense_variant 5/5

Ensembl

Gene Transcript HGVSc HGVSp Effect #exon/exons TSL MANE Appris UniProt
APEX2ENST00000374987.4 linkuse as main transcriptc.805C>T p.His269Tyr missense_variant 6/61 NM_014481.4 P1
APEX2ENST00000471758.1 linkuse as main transcriptn.654C>T non_coding_transcript_exon_variant 5/52

Frequencies

GnomAD3 genomes
AF:
0.000258
AC:
29
AN:
112245
Hom.:
0
Cov.:
23
AF XY:
0.000291
AC XY:
10
AN XY:
34389
show subpopulations
Gnomad AFR
AF:
0.0000324
Gnomad AMI
AF:
0.00
Gnomad AMR
AF:
0.00
Gnomad ASJ
AF:
0.00
Gnomad EAS
AF:
0.00
Gnomad SAS
AF:
0.00558
Gnomad FIN
AF:
0.00
Gnomad MID
AF:
0.00
Gnomad NFE
AF:
0.000207
Gnomad OTH
AF:
0.00133
GnomAD3 exomes
AF:
0.000490
AC:
68
AN:
138647
Hom.:
0
AF XY:
0.000614
AC XY:
23
AN XY:
37453
show subpopulations
Gnomad AFR exome
AF:
0.00
Gnomad AMR exome
AF:
0.00
Gnomad ASJ exome
AF:
0.000245
Gnomad EAS exome
AF:
0.00
Gnomad SAS exome
AF:
0.00501
Gnomad FIN exome
AF:
0.00
Gnomad NFE exome
AF:
0.000223
Gnomad OTH exome
AF:
0.000895
GnomAD4 exome
AF:
0.000406
AC:
428
AN:
1053190
Hom.:
0
Cov.:
31
AF XY:
0.000551
AC XY:
185
AN XY:
335570
show subpopulations
Gnomad4 AFR exome
AF:
0.0000397
Gnomad4 AMR exome
AF:
0.00
Gnomad4 ASJ exome
AF:
0.00
Gnomad4 EAS exome
AF:
0.00
Gnomad4 SAS exome
AF:
0.00555
Gnomad4 FIN exome
AF:
0.00
Gnomad4 NFE exome
AF:
0.000161
Gnomad4 OTH exome
AF:
0.000363
GnomAD4 genome
AF:
0.000258
AC:
29
AN:
112301
Hom.:
0
Cov.:
23
AF XY:
0.000290
AC XY:
10
AN XY:
34455
show subpopulations
Gnomad4 AFR
AF:
0.0000323
Gnomad4 AMR
AF:
0.00
Gnomad4 ASJ
AF:
0.00
Gnomad4 EAS
AF:
0.00
Gnomad4 SAS
AF:
0.00560
Gnomad4 FIN
AF:
0.00
Gnomad4 NFE
AF:
0.000207
Gnomad4 OTH
AF:
0.00131
Alfa
AF:
0.000255
Hom.:
1
Bravo
AF:
0.000117
ESP6500AA
AF:
0.00
AC:
0
ESP6500EA
AF:
0.000297
AC:
2
ExAC
AF:
0.000803
AC:
97

ClinVar

Significance: Likely benign
Submissions summary: Benign:1
Revision: criteria provided, single submitter
LINK: link

Submissions by phenotype

not provided Benign:1
Likely benign, criteria provided, single submitterclinical testingCeGaT Center for Human Genetics TuebingenMar 01, 2023APEX2: BS2 -

Computational scores

Source: dbNSFP v4.3

Name
Calibrated prediction
Score
Prediction
AlphaMissense
Benign
0.073
BayesDel_addAF
Benign
-0.59
T
BayesDel_noAF
Benign
-0.61
CADD
Benign
15
DANN
Benign
0.92
DEOGEN2
Benign
0.29
T
FATHMM_MKL
Uncertain
0.77
D
LIST_S2
Benign
0.60
T
M_CAP
Pathogenic
0.43
D
MetaRNN
Benign
0.0099
T
MetaSVM
Benign
-0.96
T
MutationAssessor
Benign
1.3
L
MutationTaster
Benign
0.89
N
PrimateAI
Uncertain
0.52
T
PROVEAN
Benign
-1.3
N
REVEL
Benign
0.12
Sift
Benign
0.091
T
Sift4G
Uncertain
0.020
D
Polyphen
0.75
P
Vest4
0.035
MVP
0.49
MPC
0.17
ClinPred
0.042
T
GERP RS
1.6
Varity_R
0.11
gMVP
0.37

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: rs145122391; hg19: chrX-55033116; COSMIC: COSV58189869; COSMIC: COSV58189869; API