Variant 21-41168486-G-A details in Genebe, Genetics Data Aggregator

Variant summary

Our verdict is Uncertain significance. Variant got 0 ACMG points: 2P and 2B. PM2BP4_Moderate

The NM_012105.5(BACE2):c.223G>A(p.Ala75Thr) variant causes a missense change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.00000653 in 1,377,580 control chromosomes in the GnomAD database, with no homozygous occurrence. In-silico tool predicts a benign outcome for this variant. 14/21 in silico tools predict a benign outcome for this variant. Variant has been reported in ClinVar as Uncertain significance (★).

Frequency

Genomes: 𝑓 0.0000066 ( 0 hom., cov: 31)

Exomes 𝑓: 0.0000065 ( 0 hom. )

Consequence

BACE2
NM_012105.5 missense

Scores

Clinical Significance

Uncertain significance criteria provided, single submitter U:1

Conservation

PhyloP100: 1.80

Variant links:

Genes affected

BACE2 (HGNC:934): (beta-secretase 2) This gene encodes an integral membrane glycoprotein that functions as an aspartic protease. The encoded protein cleaves amyloid precursor protein into amyloid beta peptide, which is a critical step in the etiology of Alzheimer's disease and Down syndrome. The protein precursor is further processed into an active mature peptide. Alternative splicing results in multiple transcript variants. [provided by RefSeq, Jul 2013]

BACE2 links:

Genome browser will be placed here

ACMG classification

Classification made for transcript

Verdict is Uncertain_significance. Variant got 0 ACMG points.

PM2

Very rare variant in population databases, with high coverage;

BP4

Computational evidence support a benign effect (MetaRNN=0.18168342).

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	MANE	Protein
BACE2	NM_012105.5 linkuse as main transcript	c.223G>A	p.Ala75Thr	missense_variant	1/9	ENST00000330333.11	NP_036237.2
BACE2	NM_138991.3 linkuse as main transcript	c.223G>A	p.Ala75Thr	missense_variant	1/8		NP_620476.1
BACE2	NM_138992.3 linkuse as main transcript	c.223G>A	p.Ala75Thr	missense_variant	1/8		NP_620477.1

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	TSL	MANE	Protein	Appris	UniProt
BACE2	ENST00000330333.11 linkuse as main transcript	c.223G>A	p.Ala75Thr	missense_variant	1/9	1	NM_012105.5	ENSP00000332979	P1	Q9Y5Z0-1
BACE2	ENST00000347667.5 linkuse as main transcript	c.223G>A	p.Ala75Thr	missense_variant	1/8	1		ENSP00000327528		Q9Y5Z0-2
BACE2	ENST00000328735.10 linkuse as main transcript	c.223G>A	p.Ala75Thr	missense_variant	1/8	1		ENSP00000333854		Q9Y5Z0-3

Frequencies

GnomAD3 genomes

AF:

0.00000659

AC:

AN:

151636

Hom.:

Cov.:

show subpopulations

Gnomad AFR

AF:

0.00

Gnomad AMI

AF:

0.00

Gnomad AMR

AF:

0.00

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:

0.0000147

Gnomad OTH

AF:

0.00

GnomAD4 exome

AF:

0.00000653

AC:

AN:

1225944

Hom.:

Cov.:

AF XY:

0.00000999

AC XY:

AN XY:

600558

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:

0.0000616

Gnomad4 FIN exome

AF:

0.00

Gnomad4 NFE exome

AF:

0.00000403

Gnomad4 OTH exome

AF:

0.0000207

GnomAD4 genome

AF:

0.00000659

AC:

AN:

151636

Hom.:

Cov.:

AF XY:

0.00

AC XY:

AN XY:

74024

show subpopulations

Gnomad4 AFR

AF:

0.00

Gnomad4 AMR

AF:

0.00

Gnomad4 ASJ

AF:

0.00

Gnomad4 EAS

AF:

0.00

Gnomad4 SAS

AF:

0.00

Gnomad4 FIN

AF:

0.00

Gnomad4 NFE

AF:

0.0000147

Gnomad4 OTH

AF:

0.00

Alfa

AF:

0.0000712

Hom.:

Bravo

AF:

0.0000264

ClinVar

Significance: Uncertain significance

Submissions summary: Uncertain:1

Revision: criteria provided, single submitter

LINK: link

Submissions by phenotype

not specified

Uncertain:1

Uncertain significance, criteria provided, single submitter

clinical testing

Ambry Genetics

Mar 19, 2024

The c.223G>A (p.A75T) alteration is located in exon 1 (coding exon 1) of the BACE2 gene. This alteration results from a G to A substitution at nucleotide position 223, causing the alanine (A) at amino acid position 75 to be replaced by a threonine (T). 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

0.085

BayesDel_addAF

Benign

-0.21

BayesDel_noAF

Benign

-0.53

CADD

Benign

DANN

Benign

0.94

DEOGEN2

Benign

0.13

T;.;.

Eigen

Benign

-0.66

Eigen_PC

Benign

-0.65

FATHMM_MKL

Benign

0.42

LIST_S2

Uncertain

0.87

D;D;D

M_CAP

Uncertain

0.28

MetaRNN

Benign

0.18

T;T;T

MetaSVM

Benign

-1.0

MutationAssessor

Benign

0.040

N;N;N

MutationTaster

Benign

0.99

N;N;N

PrimateAI

Pathogenic

0.90

PROVEAN

Benign

-0.31

N;N;N

REVEL

Benign

0.073

Sift

Benign

0.29

T;T;T

Sift4G

Benign

0.78

T;T;T

Polyphen

0.80

P;P;P

Vest4

0.052

MutPred

0.36

Gain of loop (P = 0.0045);Gain of loop (P = 0.0045);Gain of loop (P = 0.0045);

MVP

0.33

MPC

0.64

ClinPred

0.19

GERP RS

3.0

Varity_R

0.11

gMVP

0.32

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

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