Genetic Variant AP5S1:p.Val2Ile (chr20-3822121-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_018347.3(AP5S1):c.4G>A(p.Val2Ile) variant causes a missense change. The variant allele was found at a frequency of 0.00000205 in 1,461,294 control chromosomes in the GnomAD database, with no homozygous occurrence. Variant has been reported in ClinVar as Uncertain significance (★).

Frequency

Genomes: not found (cov: 32)

Exomes 𝑓: 0.0000021 ( 0 hom. )

Consequence

AP5S1
NM_018347.3 missense

Scores

Clinical Significance

Uncertain significance criteria provided, single submitter U:1

Conservation

PhyloP100: 5.66

Variant links:

Genes affected

AP5S1 (HGNC:15875): (adaptor related protein complex 5 subunit sigma 1) Involved in double-strand break repair via homologous recombination and endosomal transport. Located in several cellular components, including late endosome; lysosome; and nucleoplasm. Part of AP-type membrane coat adaptor complex. [provided by Alliance of Genome Resources, Apr 2022]

AP5S1 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
AP5S1	NM_018347.3 link	c.4G>A	p.Val2Ile	missense_variant	Exon 2 of 3	ENST00000615891.2	NP_060817.1	Q9NUS5
AP5S1	NM_001204446.2 link	c.4G>A	p.Val2Ile	missense_variant	Exon 2 of 3		NP_001191375.1	Q9NUS5
AP5S1	NM_001204447.2 link	c.4G>A	p.Val2Ile	missense_variant	Exon 2 of 3		NP_001191376.1	Q9NUS5

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	TSL	MANE	Protein	Appris	UniProt
AP5S1	ENST00000615891.2 link	c.4G>A	p.Val2Ile	missense_variant	Exon 2 of 3	1	NM_018347.3	ENSP00000481750.1		Q9NUS5

Frequencies

GnomAD3 genomes

Cov.:

GnomAD3 exomes

AF:

0.00000398

AC:

AN:

251084

Hom.:

AF XY:

0.00000737

AC XY:

AN XY:

135736

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:

0.0000327

Gnomad FIN exome

AF:

0.00

Gnomad NFE exome

AF:

0.00

Gnomad OTH exome

AF:

0.00

GnomAD4 exome

AF:

0.00000205

AC:

AN:

1461294

Hom.:

Cov.:

AF XY:

0.00000413

AC XY:

AN XY:

726922

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:

0.0000348

Gnomad4 FIN exome

AF:

0.00

Gnomad4 NFE exome

AF:

0.00

Gnomad4 OTH exome

AF:

0.00

GnomAD4 genome

Cov.:

ExAC

AF:

0.00000824

AC:

ClinVar

Significance: Uncertain significance

Submissions summary: Uncertain:1

Revision: criteria provided, single submitter

LINK: link

Submissions by phenotype

not specified

Uncertain:1

May 23, 2023

Ambry Genetics

Significance: Uncertain significance

Review Status: criteria provided, single submitter

Collection Method: clinical testing

The c.4G>A (p.V2I) alteration is located in exon 2 (coding exon 1) of the AP5S1 gene. This alteration results from a G to A substitution at nucleotide position 4, causing the valine (V) at amino acid position 2 to be replaced by an isoleucine (I). Based on insufficient or conflicting evidence, the clinical significance of this alteration remains unclear. -

Computational scores

Source: dbNSFP v4.3

Name

Calibrated prediction

Score

Prediction

AlphaMissense

Benign

0.32

BayesDel_addAF

Uncertain

0.039

BayesDel_noAF

Uncertain

-0.080

CADD

Pathogenic

DANN

Uncertain

1.0

DEOGEN2

Benign

0.11

T;.;T;T;T

Eigen

Pathogenic

0.74

Eigen_PC

Pathogenic

0.72

FATHMM_MKL

Pathogenic

0.98

LIST_S2

Benign

0.78

T;T;.;T;.

M_CAP

Benign

0.0089

MetaRNN

Uncertain

0.43

T;T;T;T;T

MetaSVM

Uncertain

-0.22

MutationAssessor

Uncertain

2.4

M;.;M;.;M

PrimateAI

Uncertain

0.73

PROVEAN

Benign

-0.69

N;N;N;N;.

REVEL

Benign

0.24

Sift

Pathogenic

0.0

D;D;D;D;.

Sift4G

Pathogenic

0.0

D;D;D;D;D

Polyphen

0.99

D;.;D;.;D

Vest4

0.66

MutPred

0.55

Loss of sheet (P = 0.1907);Loss of sheet (P = 0.1907);Loss of sheet (P = 0.1907);Loss of sheet (P = 0.1907);Loss of sheet (P = 0.1907);

MVP

0.17

MPC

0.34

ClinPred

0.92

GERP RS

5.2

Varity_R

0.50

gMVP

0.55

Splicing

Name

Calibrated prediction

Score

Prediction

SpliceAI score (max)

0.040

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