Variant 22-22244979-C-T details in Genebe, Genetics Data Aggregator

Variant summary

Our verdict is Benign. Variant got -8 ACMG points: 0P and 8B. BP4_StrongBS2

The NM_007128.4(VPREB1):c.80C>T(p.Pro27Leu) variant causes a missense change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.0000818 in 1,614,168 control chromosomes in the GnomAD database, including 4 homozygotes. In-silico tool predicts a benign outcome for this variant. 14/21 in silico tools predict a benign outcome for this variant. Variant has been reported in ClinVar as Uncertain significance (★).

Frequency

Genomes: 𝑓 0.000072 ( 0 hom., cov: 32)

Exomes 𝑓: 0.000083 ( 4 hom. )

Consequence

VPREB1
NM_007128.4 missense

Scores

Clinical Significance

Uncertain significance criteria provided, single submitter U:1

Conservation

PhyloP100: 0.361

Variant links:

Genes affected

VPREB1 (HGNC:12709): (V-set pre-B cell surrogate light chain 1) The protein encoded by this gene belongs to the immunoglobulin superfamily and is expressed selectively at the early stages of B cell development, namely, in proB and early preB cells. This gene encodes the iota polypeptide chain that is associated with the Ig-mu chain to form a molecular complex which is expressed on the surface of pre-B cells. The complex is thought to regulate Ig gene rearrangements in the early steps of B-cell differentiation. Alternative splicing results in multiple transcript variants. [provided by RefSeq, Jan 2015]

VPREB1 links:

Genome browser will be placed here

ACMG classification

Classification made for transcript

Verdict is Benign. Variant got -8 ACMG points.

BP4

Computational evidence support a benign effect (MetaRNN=0.020707667).

BS2

High Homozygotes in GnomAdExome4 at 4 AR gene

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	MANE	Protein	UniProt
VPREB1	NM_007128.4 linkuse as main transcript	c.80C>T	p.Pro27Leu	missense_variant	2/2	ENST00000403807.4	NP_009059.1
VPREB1	NM_001303509.2 linkuse as main transcript	c.77C>T	p.Pro26Leu	missense_variant	2/2		NP_001290438.1

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	TSL	MANE	Protein	Appris	UniProt
VPREB1	ENST00000403807.4 linkuse as main transcript	c.80C>T	p.Pro27Leu	missense_variant	2/2	1	NM_007128.4	ENSP00000385361	P2
VPREB1	ENST00000302273.2 linkuse as main transcript	c.77C>T	p.Pro26Leu	missense_variant	2/2	3		ENSP00000304590	A2

Frequencies

GnomAD3 genomes

AF:

0.0000723

AC:

AN:

152170

Hom.:

Cov.:

show subpopulations

Gnomad AFR

AF:

0.000145

Gnomad AMI

AF:

0.00

Gnomad AMR

AF:

0.00

Gnomad ASJ

AF:

0.00

Gnomad EAS

AF:

0.00

Gnomad SAS

AF:

0.00103

Gnomad FIN

AF:

0.00

Gnomad MID

AF:

0.00

Gnomad NFE

AF:

0.00

Gnomad OTH

AF:

0.00

GnomAD3 exomes

AF:

0.000147

AC:

AN:

250940

Hom.:

AF XY:

0.000206

AC XY:

AN XY:

135634

show subpopulations

Gnomad AFR exome

AF:

0.0000616

Gnomad AMR exome

AF:

0.00

Gnomad ASJ exome

AF:

0.00

Gnomad EAS exome

AF:

0.00

Gnomad SAS exome

AF:

0.00114

Gnomad FIN exome

AF:

0.00

Gnomad NFE exome

AF:

0.00000883

Gnomad OTH exome

AF:

0.00

GnomAD4 exome

AF:

0.0000828

AC:

121

AN:

1461882

Hom.:

Cov.:

AF XY:

0.000128

AC XY:

AN XY:

727240

show subpopulations

Gnomad4 AFR exome

AF:

0.0000896

Gnomad4 AMR exome

AF:

0.00

Gnomad4 ASJ exome

AF:

0.00

Gnomad4 EAS exome

AF:

0.00

Gnomad4 SAS exome

AF:

0.00119

Gnomad4 FIN exome

AF:

0.00

Gnomad4 NFE exome

AF:

0.00000540

Gnomad4 OTH exome

AF:

0.000149

GnomAD4 genome

AF:

0.0000722

AC:

AN:

152286

Hom.:

Cov.:

AF XY:

0.0000940

AC XY:

AN XY:

74464

show subpopulations

Gnomad4 AFR

AF:

0.000144

Gnomad4 AMR

AF:

0.00

Gnomad4 ASJ

AF:

0.00

Gnomad4 EAS

AF:

0.00

Gnomad4 SAS

AF:

0.00103

Gnomad4 FIN

AF:

0.00

Gnomad4 NFE

AF:

0.00

Gnomad4 OTH

AF:

0.00

Bravo

AF:

0.0000227

ESP6500AA

AF:

0.000227

AC:

ESP6500EA

AF:

0.00

AC:

ExAC

AF:

0.000231

AC:

Asia WGS

AF:

0.000289

AC:

AN:

3476

ClinVar

Significance: Uncertain significance

Submissions summary: Uncertain:1

Revision: criteria provided, single submitter

LINK: link

Submissions by phenotype

not specified

Uncertain:1

Uncertain significance, criteria provided, single submitter

clinical testing

Ambry Genetics

Apr 20, 2024

The c.80C>T (p.P27L) alteration is located in exon 2 (coding exon 2) of the VPREB1 gene. This alteration results from a C to T substitution at nucleotide position 80, causing the proline (P) at amino acid position 27 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

Benign

0.13

BayesDel_addAF

Benign

-0.48

BayesDel_noAF

Benign

-0.51

CADD

Benign

DANN

Benign

0.90

DEOGEN2

Uncertain

0.65

D;T

Eigen

Benign

-0.40

Eigen_PC

Benign

-0.51

FATHMM_MKL

Benign

0.048

LIST_S2

Benign

0.39

T;T

M_CAP

Benign

0.026

MetaRNN

Benign

0.021

T;T

MetaSVM

Benign

-0.88

MutationAssessor

Benign

2.0

M;.

MutationTaster

Benign

1.0

N;N

PrimateAI

Benign

0.44

PROVEAN

Pathogenic

-7.0

D;D

REVEL

Benign

0.15

Sift

Uncertain

0.022

D;D

Sift4G

Uncertain

0.023

D;D

Polyphen

0.14

B;.

Vest4

0.19

MVP

0.47

MPC

0.059

ClinPred

0.073

GERP RS

3.6

Varity_R

0.23

gMVP

0.43

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