Genetic Variant AP5M1:p.Val6Leu (chr14-57269330-G-C) – ACMG Classification: Likely_benign (-4 pts)

Variant summary

Our verdict is Likely benign. The variant received -4 ACMG points: 0P and 4B. BP4_Strong

The NM_018229.4(AP5M1):c.16G>C(p.Val6Leu) variant causes a missense change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.00000743 in 1,614,010 control chromosomes in the GnomAD database, with no homozygous occurrence. In-silico tool predicts a benign outcome for this variant. 16/22 in silico tools predict a benign outcome for this variant. Variant has been reported in ClinVar as Uncertain significance (★).

Frequency

Genomes: 𝑓 0.000053 ( 0 hom., cov: 32)

Exomes 𝑓: 0.0000027 ( 0 hom. )

Consequence

AP5M1
NM_018229.4 missense

Scores

Clinical Significance

Uncertain significance criteria provided, single submitter U:1

Conservation

PhyloP100: 0.534

Publications

0 publications found

Variant links:

Genes affected

AP5M1 (HGNC:20192): (adaptor related protein complex 5 subunit mu 1) Involved in endosomal transport. Located in several cellular components, including cytosol; late endosome; and lysosome. Part of AP-type membrane coat adaptor complex. [provided by Alliance of Genome Resources, Apr 2022]

AP5M1 links:

Genome browser will be placed here

ACMG classification

Classification was made for transcript

Our verdict: Likely_benign. The variant received -4 ACMG points.

BP4

Computational evidence support a benign effect (MetaRNN=0.065475225).

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	MANE	Protein	UniProt
AP5M1	NM_018229.4 link	c.16G>C	p.Val6Leu	missense_variant	Exon 1 of 8	ENST00000261558.8	NP_060699.3	Q9H0R1-1A0A024R654
AP5M1	XM_011536940.4 link	c.16G>C	p.Val6Leu	missense_variant	Exon 1 of 9		XP_011535242.1	E7EQ45
AP5M1	NR_026895.2 link	n.360G>C		non_coding_transcript_exon_variant	Exon 1 of 7

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	TSL	MANE	Protein	Appris	UniProt
AP5M1	ENST00000261558.8 link	c.16G>C	p.Val6Leu	missense_variant	Exon 1 of 8	1	NM_018229.4	ENSP00000261558.3		Q9H0R1-1
AP5M1	ENST00000431972.6 link	c.16G>C	p.Val6Leu	missense_variant	Exon 1 of 9	2		ENSP00000390531.2		E7EQ45

Frequencies

GnomAD3 genomes

AF:

0.0000526

AC:

AN:

152154

Hom.:

Cov.:

show subpopulations

Gnomad AFR

AF:

0.00

Gnomad AMI

AF:

0.00

Gnomad AMR

AF:

0.000524

Gnomad ASJ

AF:

0.00

Gnomad EAS

AF:

0.00

Gnomad SAS

AF:

0.00

Gnomad FIN

AF:

0.00

Gnomad MID

AF:

0.00

Gnomad NFE

AF:

0.00

Gnomad OTH

AF:

0.00

GnomAD2 exomes

AF:

0.0000199

AC:

AN:

251410

AF XY:

0.0000294

show subpopulations

Gnomad AFR exome

AF:

0.00

Gnomad AMR exome

AF:

0.000145

Gnomad ASJ exome

AF:

0.00

Gnomad EAS exome

AF:

0.00

Gnomad FIN exome

AF:

0.00

Gnomad NFE exome

AF:

0.00

Gnomad OTH exome

AF:

0.00

GnomAD4 exome

AF:

0.00000274

AC:

AN:

1461856

Hom.:

Cov.:

AF XY:

0.00000550

AC XY:

AN XY:

727228

show subpopulations

⚠️ The allele balance in gnomAD version 4 Exomes is significantly skewed from the expected value of 0.5.

African (AFR)

AF:

0.00

AC:

AN:

33478

American (AMR)

AF:

0.0000894

AC:

AN:

44718

Ashkenazi Jewish (ASJ)

AF:

0.00

AC:

AN:

26136

East Asian (EAS)

AF:

0.00

AC:

AN:

39700

South Asian (SAS)

AF:

0.00

AC:

AN:

86258

European-Finnish (FIN)

AF:

0.00

AC:

AN:

53416

Middle Eastern (MID)

AF:

0.00

AC:

AN:

5766

European-Non Finnish (NFE)

AF:

0.00

AC:

AN:

1111990

Other (OTH)

AF:

0.00

AC:

AN:

60394

⚠️ The allele balance in gnomAD4 Exomes is highly skewed from 0.5 (p-value = 0.000000), which strongly suggests a high chance of mosaicism in these individuals.

Allele Balance Distribution

Red line indicates average allele balance

Average allele balance: 0.338

Heterozygous variant carriers

0.00

0.20

0.40

0.60

0.80

0.95

Allele balance

GnomAD4 genome

AF:

0.0000526

AC:

AN:

152154

Hom.:

Cov.:

AF XY:

0.0000942

AC XY:

AN XY:

74348

show subpopulations

African (AFR)

AF:

0.00

AC:

AN:

41420

American (AMR)

AF:

0.000524

AC:

AN:

15278

Ashkenazi Jewish (ASJ)

AF:

0.00

AC:

AN:

3472

East Asian (EAS)

AF:

0.00

AC:

AN:

5196

South Asian (SAS)

AF:

0.00

AC:

AN:

4830

European-Finnish (FIN)

AF:

0.00

AC:

AN:

10620

Middle Eastern (MID)

AF:

0.00

AC:

AN:

316

European-Non Finnish (NFE)

AF:

0.00

AC:

AN:

68022

Other (OTH)

AF:

0.00

AC:

AN:

2088

Allele Balance Distribution

Red line indicates average allele balance

Average allele balance: 0.488

Heterozygous variant carriers

0.00

0.20

0.40

0.60

0.80

0.95

Allele balance

Alfa

AF:

0.00

Hom.:

Bravo

AF:

0.0000567

ClinVar

Significance: Uncertain significance

Submissions summary: Uncertain:1

Revision: criteria provided, single submitter

LINK: link

Submissions by phenotype

not specified

Uncertain:1

Sep 16, 2021

Ambry Genetics

Significance:Uncertain significance

Review Status:criteria provided, single submitter

Collection Method:clinical testing

The c.16G>C (p.V6L) alteration is located in exon 1 (coding exon 1) of the AP5M1 gene. This alteration results from a G to C substitution at nucleotide position 16, causing the valine (V) at amino acid position 6 to be replaced by a leucine (L). 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

0.10

BayesDel_addAF

Benign

-0.43

BayesDel_noAF

Benign

-0.61

CADD

Benign

(source)

DANN

Benign

0.66

DEOGEN2

Benign

0.00097

T;T

Eigen

Benign

-0.85

Eigen_PC

Benign

-0.66

FATHMM_MKL

Benign

0.088

LIST_S2

Benign

0.71

T;T

M_CAP

Benign

0.0072

MetaRNN

Benign

0.065

T;T

MetaSVM

Benign

-0.97

MutationAssessor

Benign

-0.69

N;.

PhyloP100

0.53

PrimateAI

Benign

0.43

PROVEAN

Benign

0.67

N;N

REVEL

Benign

0.077

Sift

Benign

1.0

T;T

Sift4G

Benign

1.0

T;T

Polyphen

0.0

B;.

Vest4

0.12

MutPred

0.53

Loss of sheet (P = 0.0126);Loss of sheet (P = 0.0126);

MVP

0.25

MPC

0.11

ClinPred

0.043

GERP RS

1.6

PromoterAI

-0.0059

Neutral

(source)

Varity_R

0.041

gMVP

0.36

Mutation Taster

=96/4

polymorphism

(source)

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

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Variant summary

Frequency

Consequence

Scores

Clinical Significance

Conservation

Publications

ACMG classification

Transcripts

RefSeq

Ensembl

Frequencies

ClinVar

Submissions by phenotype

Computational scores

Splicing

Publications

Other links and lift over