rs147369435

Variant summary

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

The NM_014855.3(AP5Z1):​c.2287G>A​(p.Val763Met) variant causes a missense change involving the alteration of a conserved nucleotide. The variant allele was found at a frequency of 0.0000986 in 1,612,768 control chromosomes in the GnomAD database, with no homozygous occurrence. Variant has been reported in ClinVar as Uncertain significance (★★). Another variant affecting the same amino acid position, but resulting in a different missense (i.e. V763L) has been classified as Uncertain significance.

Frequency

Genomes: 𝑓 0.00016 ( 0 hom., cov: 33)
Exomes 𝑓: 0.000092 ( 0 hom. )

Consequence

AP5Z1
NM_014855.3 missense

Scores

6
9
4

Clinical Significance

Uncertain significance criteria provided, multiple submitters, no conflicts U:8

Conservation

PhyloP100: 7.46

Publications

6 publications found
Variant links:
Genes affected
AP5Z1 (HGNC:22197): (adaptor related protein complex 5 subunit zeta 1) This gene was identified by genome-wide screen for genes involved in homologous recombination DNA double-strand break repair (HR-DSBR). The encoded protein was found in a complex with other proteins that have a role in HR-DSBR. Knockdown of this gene reduced homologous recombination, and mutations in this gene were found in patients with spastic paraplegia. It was concluded that this gene likely encodes a helicase (PMID:20613862). [provided by RefSeq, Jan 2011]
AP5Z1 Gene-Disease associations (from GenCC):
  • hereditary spastic paraplegia
    Inheritance: AR Classification: DEFINITIVE Submitted by: ClinGen
  • hereditary spastic paraplegia 48
    Inheritance: AR Classification: STRONG, MODERATE, SUPPORTIVE Submitted by: Genomics England PanelApp, Ambry Genetics, Labcorp Genetics (formerly Invitae), Orphanet

Genome browser will be placed here

ACMG classification

Classification was made for transcript

Our verdict: Uncertain_significance. The variant received 0 ACMG points.

Transcripts

RefSeq

Gene Transcript HGVSc HGVSp Effect Exon rank MANE Protein UniProt
AP5Z1NM_014855.3 linkc.2287G>A p.Val763Met missense_variant Exon 17 of 17 ENST00000649063.2 NP_055670.1 O43299-1
AP5Z1NM_001364858.1 linkc.1819G>A p.Val607Met missense_variant Exon 16 of 16 NP_001351787.1
AP5Z1XM_047421098.1 linkc.1951G>A p.Val651Met missense_variant Exon 15 of 15 XP_047277054.1
AP5Z1NR_157345.1 linkn.2418G>A non_coding_transcript_exon_variant Exon 17 of 17

Ensembl

Gene Transcript HGVSc HGVSp Effect Exon rank TSL MANE Protein Appris UniProt
AP5Z1ENST00000649063.2 linkc.2287G>A p.Val763Met missense_variant Exon 17 of 17 NM_014855.3 ENSP00000497815.1 O43299-1

Frequencies

GnomAD3 genomes
AF:
0.000158
AC:
24
AN:
152222
Hom.:
0
Cov.:
33
show subpopulations
Gnomad AFR
AF:
0.000193
Gnomad AMI
AF:
0.00
Gnomad AMR
AF:
0.000196
Gnomad ASJ
AF:
0.00
Gnomad EAS
AF:
0.00
Gnomad SAS
AF:
0.00
Gnomad FIN
AF:
0.00
Gnomad MID
AF:
0.00316
Gnomad NFE
AF:
0.000162
Gnomad OTH
AF:
0.000478
GnomAD2 exomes
AF:
0.000113
AC:
28
AN:
247596
AF XY:
0.000126
show subpopulations
Gnomad AFR exome
AF:
0.0000654
Gnomad AMR exome
AF:
0.000232
Gnomad ASJ exome
AF:
0.00
Gnomad EAS exome
AF:
0.00
Gnomad FIN exome
AF:
0.00
Gnomad NFE exome
AF:
0.000143
Gnomad OTH exome
AF:
0.000166
GnomAD4 exome
AF:
0.0000924
AC:
135
AN:
1460428
Hom.:
0
Cov.:
32
AF XY:
0.0000922
AC XY:
67
AN XY:
726482
show subpopulations
African (AFR)
AF:
0.000358
AC:
12
AN:
33480
American (AMR)
AF:
0.000291
AC:
13
AN:
44708
Ashkenazi Jewish (ASJ)
AF:
0.0000383
AC:
1
AN:
26126
East Asian (EAS)
AF:
0.0000252
AC:
1
AN:
39700
South Asian (SAS)
AF:
0.0000464
AC:
4
AN:
86242
European-Finnish (FIN)
AF:
0.0000192
AC:
1
AN:
52210
Middle Eastern (MID)
AF:
0.00121
AC:
7
AN:
5766
European-Non Finnish (NFE)
AF:
0.0000773
AC:
86
AN:
1111838
Other (OTH)
AF:
0.000166
AC:
10
AN:
60358
Allele Balance Distribution
Red line indicates average allele balance
Average allele balance: 0.488
Heterozygous variant carriers
0
11
21
32
42
53
0.00
0.20
0.40
0.60
0.80
0.95
Allele balance

Age Distribution

Exome Het
Variant carriers
0
4
8
12
16
20
<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:
0.000158
AC:
24
AN:
152340
Hom.:
0
Cov.:
33
AF XY:
0.000134
AC XY:
10
AN XY:
74494
show subpopulations
African (AFR)
AF:
0.000192
AC:
8
AN:
41586
American (AMR)
AF:
0.000196
AC:
3
AN:
15300
Ashkenazi Jewish (ASJ)
AF:
0.00
AC:
0
AN:
3472
East Asian (EAS)
AF:
0.00
AC:
0
AN:
5180
South Asian (SAS)
AF:
0.00
AC:
0
AN:
4832
European-Finnish (FIN)
AF:
0.00
AC:
0
AN:
10628
Middle Eastern (MID)
AF:
0.00340
AC:
1
AN:
294
European-Non Finnish (NFE)
AF:
0.000162
AC:
11
AN:
68022
Other (OTH)
AF:
0.000473
AC:
1
AN:
2114
Allele Balance Distribution
Red line indicates average allele balance
Average allele balance: 0.494
Heterozygous variant carriers
0
1
2
3
4
5
0.00
0.20
0.40
0.60
0.80
0.95
Allele balance

Age Distribution

Genome Het
Variant carriers
0
2
4
6
8
10
<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:
0.000142
Hom.:
0
Bravo
AF:
0.000208
ESP6500AA
AF:
0.000461
AC:
2
ESP6500EA
AF:
0.000353
AC:
3
ExAC
AF:
0.0000991
AC:
12
EpiCase
AF:
0.000218
EpiControl
AF:
0.000415

ClinVar

Significance: Uncertain significance
Submissions summary: Uncertain:8
Revision: criteria provided, multiple submitters, no conflicts
LINK: link

Submissions by phenotype

not provided Uncertain:4
-
Breakthrough Genomics, Breakthrough Genomics
Significance:Uncertain significance
Review Status:criteria provided, single submitter
Collection Method:not provided

- -

Feb 08, 2023
Clinical Genetics Laboratory, Skane University Hospital Lund
Significance:Uncertain significance
Review Status:criteria provided, single submitter
Collection Method:clinical testing

- -

Dec 29, 2023
Athena Diagnostics
Significance:Uncertain significance
Review Status:criteria provided, single submitter
Collection Method:clinical testing

Available data are insufficient to determine the clinical significance of the variant at this time. The frequency of this variant in the general population is uninformative in assessment of its pathogenicity. (http://gnomad.broadinstitute.org) Computational tools disagree on the variant's effect on normal protein function. -

Apr 19, 2022
Mayo Clinic Laboratories, Mayo Clinic
Significance:Uncertain significance
Review Status:criteria provided, single submitter
Collection Method:clinical testing

- -

Hereditary spastic paraplegia 48 Uncertain:3
Mar 29, 2024
Genomic Medicine Center of Excellence, King Faisal Specialist Hospital and Research Centre
Significance:Uncertain significance
Review Status:criteria provided, single submitter
Collection Method:clinical testing

- -

Aug 12, 2022
Labcorp Genetics (formerly Invitae), Labcorp
Significance:Uncertain significance
Review Status:criteria provided, single submitter
Collection Method:clinical testing

This sequence change replaces valine, which is neutral and non-polar, with methionine, which is neutral and non-polar, at codon 763 of the AP5Z1 protein (p.Val763Met). This variant is present in population databases (rs147369435, gnomAD 0.02%). This variant has not been reported in the literature in individuals affected with AP5Z1-related conditions. ClinVar contains an entry for this variant (Variation ID: 412232). Algorithms developed to predict the effect of missense changes on protein structure and function are either unavailable or do not agree on the potential impact of this missense change (SIFT: "Deleterious"; PolyPhen-2: "Probably Damaging"; Align-GVGD: "Class C0"). In summary, the available evidence is currently insufficient to determine the role of this variant in disease. Therefore, it has been classified as a Variant of Uncertain Significance. -

Mar 30, 2018
Illumina Laboratory Services, Illumina
Significance:Uncertain significance
Review Status:criteria provided, single submitter
Collection Method:clinical testing

This variant was observed in the ICSL laboratory as part of a predisposition screen in an ostensibly healthy population. It had not been previously curated by ICSL or reported in the Human Gene Mutation Database (HGMD: prior to June 1st, 2018), and was therefore a candidate for classification through an automated scoring system. Utilizing variant allele frequency, disease prevalence and penetrance estimates, and inheritance mode, an automated score was calculated to assess if this variant is too frequent to cause the disease. Based on the score, this variant could not be ruled out of causing disease and therefore its association with disease required further investigation. A literature search was performed for the gene, cDNA change, and amino acid change (if applicable). No publications were found based on this search. This variant was therefore classified as a variant of unknown significance for this disease. -

not specified Uncertain:1
Jan 11, 2023
Women's Health and Genetics/Laboratory Corporation of America, LabCorp
Significance:Uncertain significance
Review Status:criteria provided, single submitter
Collection Method:clinical testing

Variant summary: KIAA0415 c.2287G>A (p.Val763Met) results in a conservative amino acid change in the encoded protein sequence. Three of five in-silico tools predict a damaging effect of the variant on protein function. The variant allele was found at a frequency of 0.00011 in 247596 control chromosomes (gnomAD). The available data on variant occurrences in the general population are insufficient to allow any conclusion about variant significance. c.2287G>A has been reported in the literature in at-least one individual affected with Hereditary Spastic Paraplegia (example: DAmore_2018). These report(s) do not provide unequivocal conclusions about association of the variant with Hereditary Spastic Paraplegia 48. To our knowledge, no experimental evidence demonstrating an impact on protein function has been reported. Two clinical diagnostic laboratories have submitted clinical-significance assessments for this variant to ClinVar after 2014 and classified the variant as uncertain significance. Based on the evidence outlined above, the variant was classified as uncertain significance. -

Computational scores

Source: dbNSFP v4.3

Name
Calibrated prediction
Score
Prediction
AlphaMissense
Uncertain
0.42
BayesDel_addAF
Benign
-0.013
T
BayesDel_noAF
Uncertain
0.010
CADD
Pathogenic
29
DANN
Pathogenic
1.0
DEOGEN2
Benign
0.12
T;T
Eigen
Pathogenic
0.74
Eigen_PC
Uncertain
0.66
FATHMM_MKL
Pathogenic
0.98
D
LIST_S2
Uncertain
0.91
.;D
M_CAP
Uncertain
0.15
D
MetaRNN
Uncertain
0.49
T;T
MetaSVM
Uncertain
-0.22
T
MutationAssessor
Pathogenic
2.9
M;M
PhyloP100
7.5
PrimateAI
Uncertain
0.65
T
PROVEAN
Benign
-2.1
N;.
REVEL
Uncertain
0.37
Sift
Pathogenic
0.0
D;.
Sift4G
Pathogenic
0.0
D;.
Polyphen
1.0
D;D
Vest4
0.73
MVP
0.22
ClinPred
0.44
T
GERP RS
4.4
Varity_R
0.24
gMVP
0.56
Mutation Taster
=74/26
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

Publications

Other links and lift over

dbSNP: rs147369435; hg19: chr7-4830879; COSMIC: COSV62241600; COSMIC: COSV62241600; API