Genetic Variant BCL2:p.Met166Leu (chr18-63318171-T-A) – ACMG Classification: Uncertain_significance (1 pts)

Variant summary

Our verdict is Uncertain significance. The variant received 1 ACMG points: 2P and 1B. PM2BP4

The NM_000633.3(BCL2):c.496A>T(p.Met166Leu) variant causes a missense change. The variant allele was found at a frequency of 0.0000132 in 152,058 control chromosomes in the GnomAD database, with no homozygous occurrence. In-silico tool predicts a benign outcome for this variant. Variant has been reported in ClinVar as Uncertain significance (★).

Frequency

Genomes: 𝑓 0.000013 ( 0 hom., cov: 32)

Consequence

BCL2
NM_000633.3 missense

Scores

Clinical Significance

Uncertain significance criteria provided, single submitter U:1

Conservation

PhyloP100: 6.06

Publications

1 publications found

Variant links:

Genes affected

BCL2 (HGNC:990): (BCL2 apoptosis regulator) This gene encodes an integral outer mitochondrial membrane protein that blocks the apoptotic death of some cells such as lymphocytes. Constitutive expression of BCL2, such as in the case of translocation of BCL2 to Ig heavy chain locus, is thought to be the cause of follicular lymphoma. Alternative splicing results in multiple transcript variants. [provided by RefSeq, Feb 2016]

BCL2 links:

Genome browser will be placed here

ACMG classification

Classification was made for transcript

Our verdict: Uncertain_significance. The variant received 1 ACMG points.

PM2

Very rare variant in population databases, with high coverage;

BP4

Computational evidence support a benign effect (MetaRNN=0.3986681).

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	MANE	Protein	UniProt
BCL2	NM_000633.3 link	c.496A>T	p.Met166Leu	missense_variant	Exon 2 of 3	ENST00000333681.5	NP_000624.2	P10415-1A0A024R2B3

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	TSL	MANE	Protein	Appris	UniProt
BCL2	ENST00000333681.5 link	c.496A>T	p.Met166Leu	missense_variant	Exon 2 of 3	1	NM_000633.3	ENSP00000329623.3		P10415-1

Frequencies

GnomAD3 genomes

AF:

0.0000132

AC:

AN:

152058

Hom.:

Cov.:

show subpopulations

Gnomad AFR

AF:

0.0000483

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:

0.00

Gnomad OTH

AF:

0.00

GnomAD4 exome

Cov.:

GnomAD4 genome

AF:

0.0000132

AC:

AN:

152058

Hom.:

Cov.:

AF XY:

0.0000135

AC XY:

AN XY:

74260

show subpopulations

African (AFR)

AF:

0.0000483

AC:

AN:

41406

American (AMR)

AF:

0.00

AC:

AN:

15260

Ashkenazi Jewish (ASJ)

AF:

0.00

AC:

AN:

3470

East Asian (EAS)

AF:

0.00

AC:

AN:

5172

South Asian (SAS)

AF:

0.00

AC:

AN:

4826

European-Finnish (FIN)

AF:

0.00

AC:

AN:

10602

Middle Eastern (MID)

AF:

0.00

AC:

AN:

316

European-Non Finnish (NFE)

AF:

0.00

AC:

AN:

68006

Other (OTH)

AF:

0.00

AC:

AN:

2088

Allele Balance Distribution

Red line indicates average allele balance

Average allele balance: 0.525

Heterozygous variant carriers

0.00

0.20

0.40

0.60

0.80

0.95

Allele balance

Alfa

AF:

0.0000712

Hom.:

Bravo

AF:

0.00000756

ClinVar

Significance: Uncertain significance

Submissions summary: Uncertain:1

Revision: criteria provided, single submitter

LINK: link

Submissions by phenotype

not specified

Uncertain:1

Oct 01, 2024

Ambry Genetics

Significance:Uncertain significance

Review Status:criteria provided, single submitter

Collection Method:clinical testing

The c.496A>T (p.M166L) alteration is located in exon 2 (coding exon 1) of the BCL2 gene. This alteration results from a A to T substitution at nucleotide position 496, causing the methionine (M) at amino acid position 166 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

Pathogenic

0.76

BayesDel_addAF

Uncertain

0.065

BayesDel_noAF

Benign

-0.14

CADD

Pathogenic

(source)

DANN

Benign

0.95

DEOGEN2

Uncertain

0.45

T;T;.

Eigen

Uncertain

0.53

Eigen_PC

Uncertain

0.48

FATHMM_MKL

Benign

0.13

LIST_S2

Uncertain

0.88

.;D;D

M_CAP

Benign

0.015

MetaRNN

Benign

0.40

T;T;T

MetaSVM

Benign

-1.2

MutationAssessor

Benign

1.5

L;L;L

PhyloP100

6.1

PrimateAI

Uncertain

0.72

PROVEAN

Uncertain

-2.9

D;D;.

REVEL

Uncertain

0.34

Sift

Uncertain

0.0010

D;D;.

Sift4G

Uncertain

0.0070

D;D;T

Polyphen

1.0

D;D;.

Vest4

0.49

MutPred

0.64

Loss of catalytic residue at V162 (P = 0.0276);Loss of catalytic residue at V162 (P = 0.0276);Loss of catalytic residue at V162 (P = 0.0276);

MVP

0.88

MPC

1.9

ClinPred

0.96

GERP RS

4.6

Varity_R

0.94

gMVP

0.95

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