21-41252197-G-A

Variant names:

• chr21-41252197-G-A
• rs2837994
• NM_012105.5:c.1134+1296G>A

Variant summary

Our verdict is Benign. The variant received -12 ACMG points: 0P and 12B. BP4_Strong BA1

The NM_012105.5(BACE2):​c.1134+1296G>A variant causes a intron change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.111 in 152,058 control chromosomes in the GnomAD database, including 1,030 homozygotes. In-silico tool predicts a benign outcome for this variant. No clinical diagnostic laboratories have submitted clinical-significance assessments for this variant to ClinVar.

• Frequency: Genomes: 𝑓 0.11 (1030 hom., cov: 32)
• Consequence: BACE2 NM_012105.5 intron
• Clinical Significance: Not reported in ClinVar
• Conservation: PhyloP100: 0.0870
• Publications: 2 publications found

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]

ACMG classification

Our verdict: Benign. The variant received -12 ACMG points.

• BP4: Computational evidence support a benign effect (BayesDel_noAF=-0.91).
• BA1: GnomAd4 highest subpopulation (AFR) allele frequency at 95% confidence interval = 0.13 is higher than 0.05.

Variant Effect in Transcripts

ACMG analysis was done for transcript: NM_012105.5. You can select a different transcript below to see updated ACMG assignments.

RefSeq Transcripts

Selected	Gene	Transcript	Tags	HGVSc	HGVSp	Effect	Exon Rank	Protein	UniProt
	BACE2	NM_012105.5	MANE Select	c.1134+1296G>A		intron	N/A	NP_036237.2
	BACE2	NM_138991.3		c.985-4961G>A		intron	N/A	NP_620476.1
	BACE2	NM_138992.3		c.1134+1296G>A		intron	N/A	NP_620477.1

Ensembl Transcripts

Selected	Gene	Transcript	Tags	HGVSc	HGVSp	Effect	Exon Rank	Protein	UniProt
	BACE2	ENST00000330333.11	TSL:1 MANE Select	c.1134+1296G>A		intron	N/A	ENSP00000332979.6
	BACE2	ENST00000347667.5	TSL:1	c.985-4961G>A		intron	N/A	ENSP00000327528.4
	BACE2	ENST00000328735.10	TSL:1	c.1134+1296G>A		intron	N/A	ENSP00000333854.6

Frequencies

GnomAD3 genomes AF: 0.111 AC: 16901 AN: 151940 Hom.: 1030 Cov.: 32

Gnomad AFR AF: 0.133

Gnomad AMI AF: 0.0945

Gnomad AMR AF: 0.0944

Gnomad ASJ AF: 0.146

Gnomad EAS AF: 0.000966

Gnomad SAS AF: 0.101

Gnomad FIN AF: 0.0821

Gnomad MID AF: 0.108

Gnomad NFE AF: 0.114

Gnomad OTH AF: 0.105

We have no GnomAD4 exomes data on this position. Probably position not covered by the project.

GnomAD4 genome AF: 0.111 AC: 16912 AN: 152058 Hom.: 1030 Cov.: 32 AF XY: 0.109 AC XY: 8080 AN XY: 74332

African (AFR) AF: 0.132 AC: 5493 AN: 41474

American (AMR) AF: 0.0942 AC: 1438 AN: 15270

Ashkenazi Jewish (ASJ) AF: 0.146 AC: 507 AN: 3470

East Asian (EAS) AF: 0.000968 AC: 5 AN: 5166

South Asian (SAS) AF: 0.102 AC: 491 AN: 4818

European-Finnish (FIN) AF: 0.0821 AC: 867 AN: 10562

Middle Eastern (MID) AF: 0.116 AC: 34 AN: 294

European-Non Finnish (NFE) AF: 0.114 AC: 7772 AN: 67986

Other (OTH) AF: 0.104 AC: 219 AN: 2108

Alfa AF: 0.115 Hom.: 1663

Bravo AF: 0.112

Asia WGS AF: 0.0390 AC: 138 AN: 3478

ClinVar

Not reported in ClinVar

Computational scores

Source: dbNSFP v4.9

Name	Calibrated prediction	Score	Prediction
BayesDel_noAF	Benign	-0.91
CADD	Benign	5.4
DANN	Benign	0.44
PhyloP100		0.087
Mutation Taster		=100/0	polymorphism (auto)

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

Other links and lift over

dbSNP: rs2837994; hg19: chr21-42624124;