dbSNP rs1181668776: AP5Z1:p.Ala121Thr (chr7-4781749-G-A) – ACMG Classification: Uncertain_significance (2 pts)

Variant summary

Our verdict is Uncertain significance. Variant got 2 ACMG points: 2P and 0B. PM2

The NM_014855.3(AP5Z1):c.361G>A(p.Ala121Thr) variant causes a missense change. The variant allele was found at a frequency of 0.00000213 in 1,410,010 control chromosomes in the GnomAD database, with no homozygous occurrence. Variant has been reported in ClinVar as Uncertain significance (★).

Frequency

Genomes: not found (cov: 33)

Exomes 𝑓: 0.0000021 ( 0 hom. )

Consequence

AP5Z1
NM_014855.3 missense

Scores

Clinical Significance

Uncertain significance criteria provided, single submitter U:1

Conservation

PhyloP100: 4.26

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 links:

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ACMG classification

Classification made for transcript

Verdict is Uncertain_significance. Variant got 2 ACMG points.

PM2

Very rare variant in population databases, with high coverage;

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	MANE	Protein	UniProt
AP5Z1	NM_014855.3 link	c.361G>A	p.Ala121Thr	missense_variant	Exon 3 of 17	ENST00000649063.2	NP_055670.1	O43299-1
AP5Z1	NM_001364858.1 link	c.-103+437G>A		intron_variant	Intron 2 of 15		NP_001351787.1
AP5Z1	NR_157345.1 link	n.454G>A		non_coding_transcript_exon_variant	Exon 3 of 17

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	TSL	MANE	Protein	Appris	UniProt
AP5Z1	ENST00000649063.2 link	c.361G>A	p.Ala121Thr	missense_variant	Exon 3 of 17		NM_014855.3	ENSP00000497815.1		O43299-1

Frequencies

GnomAD3 genomes

Cov.:

GnomAD3 exomes

AF:

0.00000451

AC:

AN:

221840

Hom.:

AF XY:

0.00

AC XY:

AN XY:

120306

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 SAS exome

AF:

0.0000388

Gnomad FIN exome

AF:

0.00

Gnomad NFE exome

AF:

0.00

Gnomad OTH exome

AF:

0.00

GnomAD4 exome

AF:

0.00000213

AC:

AN:

1410010

Hom.:

Cov.:

AF XY:

0.00000144

AC XY:

AN XY:

692430

show subpopulations

Gnomad4 AFR exome

AF:

0.00

Gnomad4 AMR exome

AF:

0.00

Gnomad4 ASJ exome

AF:

0.00

Gnomad4 EAS exome

AF:

0.00

Gnomad4 SAS exome

AF:

0.00

Gnomad4 FIN exome

AF:

0.00

Gnomad4 NFE exome

AF:

0.00000279

Gnomad4 OTH exome

AF:

0.00

GnomAD4 genome

Cov.:

Alfa

AF:

0.0000329

Hom.:

Bravo

AF:

0.00000378

ClinVar

Significance: Uncertain significance

Submissions summary: Uncertain:1

Revision: criteria provided, single submitter

LINK: link

Submissions by phenotype

Hereditary spastic paraplegia 48

Uncertain:1

Oct 05, 2017

Labcorp Genetics (formerly Invitae), Labcorp

Significance: Uncertain significance

Review Status: criteria provided, single submitter

Collection Method: clinical testing

This variant is not present in population databases (ExAC no frequency). This variant has not been reported in the literature in individuals with AP5Z1-related disease. Algorithms developed to predict the effect of missense changes on protein structure and function do not agree on the potential impact of this missense change (SIFT: "Deleterious"; PolyPhen-2: "Possibly 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. This sequence change replaces alanine with threonine at codon 121 of the AP5Z1 protein (p.Ala121Thr). The alanine residue is highly conserved and there is a small physicochemical difference between alanine and threonine. -

Computational scores

Source: dbNSFP v4.3

Name

Calibrated prediction

Score

Prediction

AlphaMissense

Benign

0.30

BayesDel_addAF

Uncertain

0.013

BayesDel_noAF

Benign

-0.11

CADD

Uncertain

DANN

Uncertain

1.0

DEOGEN2

Benign

0.037

T;T

Eigen

Uncertain

0.57

Eigen_PC

Uncertain

0.53

FATHMM_MKL

Uncertain

0.89

LIST_S2

Benign

0.79

.;T

M_CAP

Benign

0.026

MetaRNN

Uncertain

0.52

D;D

MetaSVM

Benign

-0.30

MutationAssessor

Uncertain

2.8

M;M

PrimateAI

Uncertain

0.50

PROVEAN

Benign

-1.6

N;.

REVEL

Benign

0.19

Sift

Uncertain

0.0080

D;.

Sift4G

Uncertain

0.011

D;.

Polyphen

0.99

D;D

Vest4

0.77

MutPred

0.45

Gain of relative solvent accessibility (P = 0.0479);Gain of relative solvent accessibility (P = 0.0479);

MVP

0.24

ClinPred

0.86

GERP RS

5.1

RBP_binding_hub_radar

0.0

RBP_regulation_power_radar

1.7

Varity_R

0.13

gMVP

0.18

Splicing

Name

Calibrated prediction

Score

Prediction

SpliceAI score (max)

0.030

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.

Variant summary

Frequency

Consequence

Scores

Clinical Significance

Conservation

ACMG classification

Transcripts

RefSeq

Ensembl

Frequencies

ClinVar

Submissions by phenotype

Computational scores

Splicing

Publications

LitVar

Other links and lift over