Genetic Variant BAX:p.Glu41GlyfsTer33 (chr19-48955713-T-TG) – ACMG Classification: Pathogenic (10 pts)

Variant summary

Our verdict is Pathogenic. The variant received 10 ACMG points: 10P and 0B. PVS1PM2

The NM_138761.4(BAX):c.121dupG(p.Glu41GlyfsTer33) variant causes a frameshift change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.000061 in 1,458,432 control chromosomes in the GnomAD database, with no homozygous occurrence. Variant has been reported in ClinVar as Uncertain significance (★). Variant results in nonsense mediated mRNA decay.

Frequency

Genomes: 𝑓 0.000013 ( 0 hom., cov: 31)

Exomes 𝑓: 0.000061 ( 0 hom. )

Failed GnomAD Quality Control

Consequence

BAX
NM_138761.4 frameshift

Scores

Not classified

Clinical Significance

Uncertain significance criteria provided, single submitter P:1U:1

Conservation

PhyloP100: 0.473

Publications

17 publications found

Variant links:

Genes affected

BAX (HGNC:959): (BCL2 associated X, apoptosis regulator) The protein encoded by this gene belongs to the BCL2 protein family. BCL2 family members form hetero- or homodimers and act as anti- or pro-apoptotic regulators that are involved in a wide variety of cellular activities. This protein forms a heterodimer with BCL2, and functions as an apoptotic activator. The association and the ratio of BAX to BCL2 also determines survival or death of a cell following an apoptotic stimulus. This protein is reported to interact with, and increase the opening of, the mitochondrial voltage-dependent anion channel (VDAC), which leads to the loss in membrane potential and the release of cytochrome c. The expression of this gene is regulated by the tumor suppressor P53 and has been shown to be involved in P53-mediated apoptosis. Multiple alternatively spliced transcript variants, which encode different isoforms, have been reported for this gene. [provided by RefSeq, Dec 2019]

BAX Gene-Disease associations (from GenCC):

leukemia, acute lymphocytic, susceptibility to, 1
Inheritance: Unknown Classification: LIMITED Submitted by: Ambry Genetics

BAX links:

ENSG00000305635 (HGNC:):

ENSG00000305635 links:

Genome browser will be placed here

ACMG classification

Classification was made for transcript

Our verdict: Pathogenic. The variant received 10 ACMG points.

PVS1

Loss of function variant, product undergoes nonsense mediated mRNA decay. LoF is a known mechanism of disease.

PM2

Very rare variant in population databases, with high coverage;

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	MANE	Protein	UniProt
BAX	NM_138761.4 link	c.121dupG	p.Glu41GlyfsTer33	frameshift_variant	Exon 3 of 6	ENST00000345358.12	NP_620116.1

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	TSL	MANE	Protein	Appris	UniProt
BAX	ENST00000345358.12 link	c.121dupG	p.Glu41GlyfsTer33	frameshift_variant	Exon 3 of 6	1	NM_138761.4	ENSP00000263262.9

Frequencies

GnomAD3 genomes

AF:

0.0000133

AC:

AN:

150748

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:

0.0000296

Gnomad OTH

AF:

0.00

GnomAD2 exomes

AF:

0.000221

AC:

AN:

239912

AF XY:

0.000108

show subpopulations

Gnomad AFR exome

AF:

0.000317

Gnomad AMR exome

AF:

0.0000924

Gnomad ASJ exome

AF:

0.000107

Gnomad EAS exome

AF:

0.0000568

Gnomad FIN exome

AF:

0.00

Gnomad NFE exome

AF:

0.000368

Gnomad OTH exome

AF:

0.000173

GnomAD4 exome

AF:

0.0000610

AC:

AN:

1458432

Hom.:

Cov.:

AF XY:

0.0000607

AC XY:

AN XY:

725324

show subpopulations

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

African (AFR)

AF:

0.0000300

AC:

AN:

33384

American (AMR)

AF:

0.00

AC:

AN:

44424

Ashkenazi Jewish (ASJ)

AF:

0.0000385

AC:

AN:

25972

East Asian (EAS)

AF:

0.0000252

AC:

AN:

39618

South Asian (SAS)

AF:

0.0000349

AC:

AN:

86004

European-Finnish (FIN)

AF:

0.000910

AC:

AN:

52760

Middle Eastern (MID)

AF:

0.000174

AC:

AN:

5742

European-Non Finnish (NFE)

AF:

0.0000306

AC:

AN:

1110304

Other (OTH)

AF:

0.00

AC:

AN:

60224

⚠️ The allele balance in gnomAD4 Exomes is highly skewed from 0.5 (p-value = 0), which strongly suggests a high chance of mosaicism in these individuals.

Allele Balance Distribution

Red line indicates average allele balance

Average allele balance: 0.276

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

Data not reliable, filtered out with message: AS_VQSR

AF:

0.0000133

AC:

AN:

150748

Hom.:

Cov.:

AF XY:

0.0000136

AC XY:

AN XY:

73520

show subpopulations

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

African (AFR)

AF:

0.00

AC:

AN:

40958

American (AMR)

AF:

0.00

AC:

AN:

15142

Ashkenazi Jewish (ASJ)

AF:

0.00

AC:

AN:

3458

East Asian (EAS)

AF:

0.00

AC:

AN:

5138

South Asian (SAS)

AF:

0.00

AC:

AN:

4722

European-Finnish (FIN)

AF:

0.00

AC:

AN:

10432

Middle Eastern (MID)

AF:

0.00

AC:

AN:

316

European-Non Finnish (NFE)

AF:

0.0000296

AC:

AN:

67600

Other (OTH)

AF:

0.00

AC:

AN:

2072

⚠️ The allele balance in gnomAD version 4 Genomes is significantly skewed from the expected value of 0.5. (p-value = 0.00666416), which strongly suggests a high chance of mosaicism in these individuals.

Allele Balance Distribution

Red line indicates average allele balance

Average allele balance: 0.325

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:

0.000719

Hom.:

ClinVar

Significance: Uncertain significance

Submissions summary: Pathogenic:1Uncertain:1

Revision: criteria provided, single submitter

LINK: link

Submissions by phenotype

Carcinoma of colon

Pathogenic:1

Feb 14, 1997

OMIM

Significance:Pathogenic

Review Status:no assertion criteria provided

Collection Method:literature only

Inborn genetic diseases

Uncertain:1

Jan 18, 2018

Ambry Genetics

Significance:Uncertain significance

Review Status:criteria provided, single submitter

Collection Method:clinical testing

Computational scores

Source: dbNSFP v4.3

Name

Calibrated prediction

Score

Prediction

PhyloP100

0.47

Mutation Taster

=5/195

disease causing (fs/PTC)

(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

You must be logged in to view publications. This limit was set because tens of millions (!) of queries from AI bots are generated daily.

19-48955713-TGGGGGGG-TGGGGGGGG

Variant summary

Frequency

Consequence

Scores

Clinical Significance

Conservation

Publications

ACMG classification

Transcripts

RefSeq

Ensembl

Frequencies

Age Distribution

Age Distribution

ClinVar

Submissions by phenotype

Computational scores

Splicing

Publications

Other links and lift over