Genetic Variant BCL7A:p.Lys140Arg (chr12-122044033-A-G) – ACMG Classification: Uncertain_significance (0 pts)

Variant summary

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

The NM_001024808.3(BCL7A):c.419A>G(p.Lys140Arg) variant causes a missense change. The variant allele was found at a frequency of 0.00000186 in 1,613,204 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 0.0000066 ( 0 hom., cov: 31)

Exomes 𝑓: 0.0000014 ( 0 hom. )

Consequence

BCL7A
NM_001024808.3 missense

Scores

Clinical Significance

Uncertain significance criteria provided, single submitter U:1

Conservation

PhyloP100: 6.50

Variant links:

Genes affected

BCL7A (HGNC:1004): (BAF chromatin remodeling complex subunit BCL7A) This gene is directly involved, with Myc and IgH, in a three-way gene translocation in a Burkitt lymphoma cell line. As a result of the gene translocation, the N-terminal region of the gene product is disrupted, which is thought to be related to the pathogenesis of a subset of high-grade B cell non-Hodgkin lymphoma. The N-terminal segment involved in the translocation includes the region that shares a strong sequence similarity with those of BCL7B and BCL7C. Two transcript variants encoding different isoforms have been found for this gene. [provided by RefSeq, Jul 2008]

BCL7A links:

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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=0.25051376).

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	MANE	Protein	UniProt
BCL7A	NM_001024808.3 link	c.419A>G	p.Lys140Arg	missense_variant	Exon 4 of 6	ENST00000261822.5	NP_001019979.1	Q4VC05-1
BCL7A	NM_020993.5 link	c.419A>G	p.Lys140Arg	missense_variant	Exon 4 of 6		NP_066273.1	Q4VC05-2

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	TSL	MANE	Protein	UniProt
BCL7A	ENST00000261822.5 link	c.419A>G	p.Lys140Arg	missense_variant	Exon 4 of 6	1	NM_001024808.3	ENSP00000261822.5	Q4VC05-1
BCL7A	ENST00000538010.5 link	c.419A>G	p.Lys140Arg	missense_variant	Exon 4 of 6	1		ENSP00000445868.1	Q4VC05-2
BCL7A	ENST00000432926.2 link	n.533A>G		non_coding_transcript_exon_variant	Exon 4 of 4	2

Frequencies

GnomAD3 genomes

AF:

0.00000657

AC:

AN:

152102

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:

0.00

Gnomad OTH

AF:

0.000479

GnomAD4 exome

AF:

0.00000137

AC:

AN:

1461102

Hom.:

Cov.:

AF XY:

0.00000275

AC XY:

AN XY:

726868

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:

0.00

Gnomad4 FIN exome

AF:

0.00

Gnomad4 NFE exome

AF:

0.00000180

Gnomad4 OTH exome

AF:

0.00

GnomAD4 genome

AF:

0.00000657

AC:

AN:

152102

Hom.:

Cov.:

AF XY:

0.00

AC XY:

AN XY:

74274

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:

0.00

Gnomad4 OTH

AF:

0.000479

Bravo

AF:

0.00000378

ClinVar

Significance: Uncertain significance

Submissions summary: Uncertain:1

Revision: criteria provided, single submitter

LINK: link

Submissions by phenotype

not specified

Uncertain:1

Jul 12, 2023

Ambry Genetics

Significance: Uncertain significance

Review Status: criteria provided, single submitter

Collection Method: clinical testing

The c.419A>G (p.K140R) alteration is located in exon 4 (coding exon 4) of the BCL7A gene. This alteration results from a A to G substitution at nucleotide position 419, causing the lysine (K) at amino acid position 140 to be replaced by an arginine (R). 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

0.083

BayesDel_addAF

Benign

-0.12

BayesDel_noAF

Benign

-0.41

CADD

Uncertain

DANN

Uncertain

1.0

DEOGEN2

Benign

0.043

.;T

Eigen

Benign

0.015

Eigen_PC

Benign

0.13

FATHMM_MKL

Uncertain

0.96

M_CAP

Benign

0.0098

MetaRNN

Benign

0.25

T;T

MetaSVM

Benign

-1.0

MutationAssessor

Benign

1.8

L;L

PrimateAI

Uncertain

0.60

PROVEAN

Benign

-1.1

N;N

REVEL

Benign

0.050

Sift

Uncertain

0.022

D;D

Sift4G

Benign

0.46

T;T

Polyphen

0.99

D;B

Vest4

0.54

MutPred

0.25

Loss of ubiquitination at K140 (P = 0.0014);Loss of ubiquitination at K140 (P = 0.0014);

MVP

0.61

MPC

0.45

ClinPred

0.66

GERP RS

4.4

Varity_R

0.057

gMVP

0.14

Splicing

Name

Calibrated prediction

Score

Prediction

SpliceAI score (max)

0.030

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