Genetic Variant APBA3:p.Tyr550Cys (chr19-3751196-T-C) – ACMG Classification: Uncertain_significance (2 pts)

Variant summary

Our verdict is Uncertain significance. The variant received 2 ACMG points: 2P and 0B. PM2

The NM_004886.4(APBA3):c.1649A>G(p.Tyr550Cys) variant causes a missense change. The variant allele was found at a frequency of 0.0000155 in 1,552,032 control chromosomes in the GnomAD database, with no homozygous occurrence. In-silico tool predicts a benign outcome for this variant. 14/24 in silico tools predict a benign outcome for this variant. Variant has been reported in ClinVar as Uncertain significance (★).

Frequency

Genomes: 𝑓 0.000059 ( 0 hom., cov: 33)

Exomes 𝑓: 0.000011 ( 0 hom. )

Consequence

APBA3
NM_004886.4 missense

Scores

Clinical Significance

Uncertain significance criteria provided, single submitter U:1

Conservation

PhyloP100: 3.66

Publications

0 publications found

Variant links:

Genes affected

APBA3 (HGNC:580): (amyloid beta precursor protein binding family A member 3) The protein encoded by this gene is a member of the X11 protein family. It is an adapter protein that interacts with the Alzheimer's disease amyloid precursor protein. This gene product is believed to be involved in signal transduction processes. This gene is a candidate gene for Alzheimer's disease. [provided by RefSeq, Jul 2008]

APBA3 links:

Genome browser will be placed here

ACMG classification

Classification was made for transcript

Our verdict: Uncertain_significance. The variant received 2 ACMG points.

PM2

Very rare variant in population databases, with high coverage;

Variant Effect in Transcripts

ACMG analysis was done for transcript: NM_004886.4. You can select a different transcript below to see updated ACMG assignments.

RefSeq Transcripts

Sel.	Gene	Transcript	Tags	HGVSc	HGVSp	Effect	Exon Rank	Protein	UniProt
	APBA3	NM_004886.4	MANE Select	c.1649A>G	p.Tyr550Cys	missense	Exon 10 of 11	NP_004877.1	O96018

Ensembl Transcripts

Gene	Transcript	Tags	HGVSc	HGVSp	Effect	Exon Rank	Protein	UniProt
APBA3	ENST00000316757.4	TSL:1 MANE Select	c.1649A>G	p.Tyr550Cys	missense	Exon 10 of 11	ENSP00000315136.2	O96018
APBA3	ENST00000590064.1	TSL:1	n.4024A>G		non_coding_transcript_exon	Exon 3 of 4
APBA3	ENST00000591678.1	TSL:1	n.536A>G		non_coding_transcript_exon	Exon 1 of 2

Frequencies

GnomAD3 genomes

AF:

0.0000591

AC:

AN:

152180

Hom.:

Cov.:

show subpopulations

Gnomad AFR

AF:

0.0000724

Gnomad AMI

AF:

0.00

Gnomad AMR

AF:

0.000262

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:

0.0000294

Gnomad OTH

AF:

0.00

GnomAD2 exomes

AF:

0.0000318

AC:

AN:

157358

AF XY:

0.0000240

show subpopulations

Gnomad AFR exome

AF:

0.00

Gnomad AMR exome

AF:

0.000160

Gnomad ASJ exome

AF:

0.00

Gnomad EAS exome

AF:

0.00

Gnomad FIN exome

AF:

0.00

Gnomad NFE exome

AF:

0.0000162

Gnomad OTH exome

AF:

0.00

GnomAD4 exome

AF:

0.0000107

AC:

AN:

1399852

Hom.:

Cov.:

AF XY:

0.0000116

AC XY:

AN XY:

690868

show subpopulations

African (AFR)

AF:

0.00

AC:

AN:

31864

American (AMR)

AF:

0.000139

AC:

AN:

35970

Ashkenazi Jewish (ASJ)

AF:

0.00

AC:

AN:

25164

East Asian (EAS)

AF:

0.00

AC:

AN:

36110

South Asian (SAS)

AF:

0.00

AC:

AN:

79436

European-Finnish (FIN)

AF:

0.00

AC:

AN:

47620

Middle Eastern (MID)

AF:

0.00

AC:

AN:

5010

European-Non Finnish (NFE)

AF:

0.00000925

AC:

AN:

1080642

Other (OTH)

AF:

0.00

AC:

AN:

58036

Allele Balance Distribution

Red line indicates average allele balance

Average allele balance: 0.472

Heterozygous variant carriers

0.00

0.20

0.40

0.60

0.80

0.95

Allele balance

Age Distribution

Exome Het

Variant carriers

<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:

0.0000591

AC:

AN:

152180

Hom.:

Cov.:

AF XY:

0.0000538

AC XY:

AN XY:

74346

show subpopulations

African (AFR)

AF:

0.0000724

AC:

AN:

41442

American (AMR)

AF:

0.000262

AC:

AN:

15278

Ashkenazi Jewish (ASJ)

AF:

0.00

AC:

AN:

3466

East Asian (EAS)

AF:

0.00

AC:

AN:

5198

South Asian (SAS)

AF:

0.00

AC:

AN:

4834

European-Finnish (FIN)

AF:

0.00

AC:

AN:

10620

Middle Eastern (MID)

AF:

0.00

AC:

AN:

316

European-Non Finnish (NFE)

AF:

0.0000294

AC:

AN:

68020

Other (OTH)

AF:

0.00

AC:

AN:

2094

Allele Balance Distribution

Red line indicates average allele balance

Average allele balance: 0.519

Heterozygous variant carriers

0.00

0.20

0.40

0.60

0.80

0.95

Allele balance

Age Distribution

Genome Het

Variant carriers

<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:

0.00

Hom.:

Bravo

AF:

0.0000718

ClinVar

ClinVar submissions

Significance:Uncertain significance

Revision:criteria provided, single submitter

View on ClinVar

Pathogenic

VUS

Benign

Condition

not specified (1)

Computational scores

Source: dbNSFP v4.9

Name

Calibrated prediction

Score

Prediction

AlphaMissense

Benign

0.063

BayesDel_addAF

Benign

-0.38

BayesDel_noAF

Benign

-0.52

CADD

Benign

(source)

DANN

Uncertain

0.99

DEOGEN2

Benign

0.059

Eigen

Benign

-0.15

Eigen_PC

Benign

-0.17

FATHMM_MKL

Uncertain

0.79

LIST_S2

Benign

0.28

M_CAP

Benign

0.029

MetaRNN

Benign

0.24

MetaSVM

Benign

-1.1

MutationAssessor

Benign

0.34

PhyloP100

3.7

PrimateAI

Benign

0.33

PROVEAN

Benign

-0.51

REVEL

Benign

0.080

Sift

Benign

0.16

Sift4G

Uncertain

0.013

Polyphen

0.87

Vest4

0.31

MutPred

0.46

Loss of phosphorylation at Y550 (P = 0.0294)

MVP

0.43

MPC

0.25

ClinPred

0.17

GERP RS

3.2

Varity_R

0.039

gMVP

0.55

Mutation Taster

=90/10

polymorphism

(source)

Splicing

Name

Calibrated prediction

Score

Prediction

SpliceAI score (max)

0.25

Details are displayed if max score is > 0.2

DS_DG_spliceai

0.25

Position offset: 5

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

Variant Effect in Transcripts

RefSeq Transcripts

Ensembl Transcripts

Frequencies

Age Distribution

Age Distribution

ClinVar

Computational scores

Splicing

Publications

Other links and lift over