Genetic Variant BCL6B:p.Val123Leu (chr17-7024270-G-T) – ACMG Classification: Uncertain_significance (2 pts)

Variant summary

Our verdict is Uncertain significance. Variant got 2 ACMG points: 2P and 0B. PM2

The NM_181844.4(BCL6B):c.367G>T(p.Val123Leu) variant causes a missense change involving the alteration of a conserved nucleotide. The variant allele was found at a frequency of 0.0000118 in 1,613,672 control chromosomes in the GnomAD database, with no homozygous occurrence. Variant has been reported in ClinVar as Uncertain significance (★).

Frequency

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

Exomes 𝑓: 0.000012 ( 0 hom. )

Consequence

BCL6B
NM_181844.4 missense

Scores

Clinical Significance

Uncertain significance criteria provided, single submitter U:1

Conservation

PhyloP100: 9.54

Variant links:

Genes affected

BCL6B (HGNC:1002): (BCL6B transcription repressor) Enables sequence-specific double-stranded DNA binding activity. Predicted to be involved in several processes, including regulation of gene expression; regulation of inflammatory response; and type 2 immune response. Predicted to be located in nucleus. Predicted to be active in nucleoplasm. [provided by Alliance of Genome Resources, Apr 2022]

BCL6B links:

Genome browser will be placed here

ACMG classification

Classification made for transcript

Verdict is Uncertain_significance. Variant got 2 ACMG points.

PM2

Very rare variant in population databases, with high coverage;

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	MANE	Protein	UniProt
BCL6B	NM_181844.4 link	c.367G>T	p.Val123Leu	missense_variant	Exon 3 of 9	ENST00000293805.10	NP_862827.2	Q8N143A8KA13

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	TSL	MANE	Protein	UniProt
BCL6B	ENST00000293805.10 link	c.367G>T	p.Val123Leu	missense_variant	Exon 3 of 9	1	NM_181844.4	ENSP00000293805.5	Q8N143
BCL6B	ENST00000576705.1 link	c.367G>T	p.Val123Leu	missense_variant	Exon 3 of 3	4		ENSP00000460071.1	I3L304
BCL6B	ENST00000572216.1 link	n.275G>T		non_coding_transcript_exon_variant	Exon 3 of 4	4
BCL6B	ENST00000573503.1 link	c.*33G>T		downstream_gene_variant		2		ENSP00000460282.1	I3L396

Frequencies

GnomAD3 genomes

AF:

0.0000131

AC:

AN:

152196

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

GnomAD3 exomes

AF:

0.00000804

AC:

AN:

248716

Hom.:

AF XY:

0.00000740

AC XY:

AN XY:

135154

show subpopulations

Gnomad AFR exome

AF:

0.0000649

Gnomad AMR exome

AF:

0.0000290

Gnomad ASJ exome

AF:

0.00

Gnomad EAS exome

AF:

0.00

Gnomad SAS exome

AF:

0.00

Gnomad FIN exome

AF:

0.00

Gnomad NFE exome

AF:

0.00

Gnomad OTH exome

AF:

0.00

GnomAD4 exome

AF:

0.0000116

AC:

AN:

1461358

Hom.:

Cov.:

AF XY:

0.0000138

AC XY:

AN XY:

727000

show subpopulations

Gnomad4 AFR exome

AF:

0.0000299

Gnomad4 AMR exome

AF:

0.0000224

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:

0.0000126

Gnomad4 OTH exome

AF:

0.0000166

GnomAD4 genome

AF:

0.0000131

AC:

AN:

152314

Hom.:

Cov.:

AF XY:

0.00

AC XY:

AN XY:

74466

show subpopulations

Gnomad4 AFR

AF:

0.0000481

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:

0.00

Bravo

AF:

0.00000756

ESP6500AA

AF:

0.000237

AC:

ESP6500EA

AF:

0.00

AC:

ExAC

AF:

0.0000165

AC:

ClinVar

Significance: Uncertain significance

Submissions summary: Uncertain:1

Revision: criteria provided, single submitter

LINK: link

Submissions by phenotype

not specified

Uncertain:1

Aug 08, 2023

Ambry Genetics

Significance: Uncertain significance

Review Status: criteria provided, single submitter

Collection Method: clinical testing

The c.367G>T (p.V123L) alteration is located in exon 3 (coding exon 2) of the BCL6B gene. This alteration results from a G to T substitution at nucleotide position 367, causing the valine (V) at amino acid position 123 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

0.77

BayesDel_addAF

Benign

-0.072

BayesDel_noAF

Benign

-0.10

CADD

Pathogenic

DANN

Uncertain

0.99

DEOGEN2

Benign

0.18

T;.

Eigen

Uncertain

0.67

Eigen_PC

Pathogenic

0.69

FATHMM_MKL

Uncertain

0.96

LIST_S2

Uncertain

0.97

D;D

M_CAP

Benign

0.028

MetaRNN

Uncertain

0.48

T;T

MetaSVM

Benign

-0.65

MutationAssessor

Benign

1.8

L;.

PrimateAI

Pathogenic

0.89

PROVEAN

Benign

-1.5

N;.

REVEL

Benign

0.25

Sift

Benign

0.13

T;.

Sift4G

Benign

0.20

T;T

Polyphen

1.0

D;.

Vest4

0.75

MutPred

0.57

Loss of catalytic residue at V123 (P = 0.111);Loss of catalytic residue at V123 (P = 0.111);

MVP

0.84

MPC

1.2

ClinPred

0.80

GERP RS

5.2

Varity_R

0.25

gMVP

0.56

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