chr17-63930286-T-G

Position:

chr17-63930286-T-G

Variant summary

Our verdict is Uncertain significance. Variant got 0 ACMG points: 4P and 4B. PM1PM2BP4_Strong

The NM_000626.4(CD79B):c.218A>C(p.Asn73Thr) variant causes a missense change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.0000229 in 1,614,232 control chromosomes in the GnomAD database, with no homozygous occurrence. In-silico tool predicts a benign outcome for this variant. 16/21 in silico tools predict a benign outcome for this variant. Variant has been reported in ClinVar as Uncertain significance (★).

Frequency

Genomes: 𝑓 0.000039 ( 0 hom., cov: 33)

Exomes 𝑓: 0.000021 ( 0 hom. )

Consequence

CD79B
NM_000626.4 missense

Scores

Clinical Significance

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

Conservation

PhyloP100: -7.32

Variant links:

Genes affected

CD79B (HGNC:1699): (CD79b molecule) The B lymphocyte antigen receptor is a multimeric complex that includes the antigen-specific component, surface immunoglobulin (Ig). Surface Ig non-covalently associates with two other proteins, Ig-alpha and Ig-beta, which are necessary for expression and function of the B-cell antigen receptor. This gene encodes the Ig-beta protein of the B-cell antigen component. Alternatively spliced transcript variants encoding different isoforms have been described. [provided by RefSeq, Jul 2008]

CD79B links:

Genome browser will be placed here

ACMG classification

Classification made for transcript

Verdict is Uncertain_significance. Variant got 0 ACMG points.

PM1

In a glycosylation_site N-linked (GlcNAc...) asparagine (size 0) in uniprot entity CD79B_HUMAN

PM2

Very rare variant in population databases, with high coverage;

BP4

Computational evidence support a benign effect (MetaRNN=0.014385343).

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	MANE	Protein
CD79B	NM_000626.4 linkuse as main transcript	c.218A>C	p.Asn73Thr	missense_variant	3/6	ENST00000006750.8	NP_000617.1
CD79B	NM_001039933.3 linkuse as main transcript	c.221A>C	p.Asn74Thr	missense_variant	3/6		NP_001035022.1
CD79B	NM_001329050.2 linkuse as main transcript	c.122-398A>C		intron_variant			NP_001315979.1
CD79B	NM_021602.4 linkuse as main transcript	c.119-398A>C		intron_variant			NP_067613.1

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	TSL	MANE	Protein	Appris	UniProt
CD79B	ENST00000006750.8 linkuse as main transcript	c.218A>C	p.Asn73Thr	missense_variant	3/6	1	NM_000626.4	ENSP00000006750	P4	P40259-1

Frequencies

GnomAD3 genomes

AF:

0.0000394

AC:

AN:

152248

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:

0.00115

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:

0.000123

AC:

AN:

251400

Hom.:

AF XY:

0.0000810

AC XY:

AN XY:

135884

show subpopulations

Gnomad AFR exome

AF:

0.00

Gnomad AMR exome

AF:

0.00

Gnomad ASJ exome

AF:

0.00

Gnomad EAS exome

AF:

0.00169

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:

0.0000212

AC:

AN:

1461866

Hom.:

Cov.:

AF XY:

0.0000193

AC XY:

AN XY:

727238

show subpopulations

Gnomad4 AFR exome

AF:

0.00

Gnomad4 AMR exome

AF:

0.00

Gnomad4 ASJ exome

AF:

0.00

Gnomad4 EAS exome

AF:

0.000756

Gnomad4 SAS exome

AF:

0.00

Gnomad4 FIN exome

AF:

0.00

Gnomad4 NFE exome

AF:

0.00

Gnomad4 OTH exome

AF:

0.0000166

GnomAD4 genome

AF:

0.0000394

AC:

AN:

152366

Hom.:

Cov.:

AF XY:

0.0000537

AC XY:

AN XY:

74506

show subpopulations

Gnomad4 AFR

AF:

0.00

Gnomad4 AMR

AF:

0.00

Gnomad4 ASJ

AF:

0.00

Gnomad4 EAS

AF:

0.00116

Gnomad4 SAS

AF:

0.00

Gnomad4 FIN

AF:

0.00

Gnomad4 NFE

AF:

0.00

Gnomad4 OTH

AF:

0.00

Bravo

AF:

0.0000680

ExAC

AF:

0.0000906

AC:

Asia WGS

AF:

0.000866

AC:

AN:

3478

ClinVar

Significance: Uncertain significance

Submissions summary: Uncertain:1Other:1

Revision: criteria provided, single submitter

LINK: link

Submissions by phenotype

Agammaglobulinemia 6, autosomal recessive

Uncertain:1

Uncertain significance, criteria provided, single submitter

clinical testing

Labcorp Genetics (formerly Invitae), Labcorp

Jun 15, 2022

This sequence change replaces asparagine, which is neutral and polar, with threonine, which is neutral and polar, at codon 73 of the CD79B protein (p.Asn73Thr). This variant is present in population databases (rs200126941, gnomAD 0.2%). This variant has not been reported in the literature in individuals affected with CD79B-related conditions. ClinVar contains an entry for this variant (Variation ID: 133838). Algorithms developed to predict the effect of missense changes on protein structure and function output the following: SIFT: "Not Available"; PolyPhen-2: "Benign"; Align-GVGD: "Not Available". The threonine amino acid residue is found in multiple mammalian species, which suggests that this missense change does not adversely affect protein function. In summary, the available evidence is currently insufficient to determine the role of this variant in disease. Therefore, it has been classified as a Variant of Uncertain Significance. -

not specified

Other:1

not provided, no classification provided

reference population

ITMI

Sep 19, 2013

- -

Computational scores

Source: dbNSFP v4.3

Name

Calibrated prediction

Score

Prediction

AlphaMissense

Benign

0.081

BayesDel_addAF

Benign

-0.59

BayesDel_noAF

Benign

-0.64

CADD

Benign

0.0010

DANN

Benign

0.37

DEOGEN2

Benign

0.32

.;T

Eigen

Benign

-2.2

Eigen_PC

Benign

-2.3

FATHMM_MKL

Benign

0.0016

LIST_S2

Benign

0.20

T;T

M_CAP

Benign

0.0076

MetaRNN

Benign

0.014

T;T

MetaSVM

Benign

-0.97

MutationAssessor

Benign

1.1

.;L

MutationTaster

Benign

1.0

N;N;N

PrimateAI

Benign

0.27

PROVEAN

Benign

-0.070

N;N

REVEL

Benign

0.090

Sift

Benign

0.57

T;T

Sift4G

Benign

0.58

T;T

Polyphen

0.0

.;B

Vest4

0.16

MVP

0.33

MPC

0.57

ClinPred

0.080

GERP RS

-11

Varity_R

0.14

gMVP

0.57

Splicing

Name

Calibrated prediction

Score

Prediction

SpliceAI score (max)

0.010

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