4-150436793-T-G

Position:

chr4-150436793-T-G

Variant summary

Our verdict is Uncertain significance. Variant got 1 ACMG points: 2P and 1B. PM2BP4

The NM_001364905.1(LRBA):c.6852A>C(p.Gln2284His) variant causes a missense change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.000368 in 1,613,632 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 0.00019 ( 0 hom., cov: 32)

Exomes 𝑓: 0.00039 ( 0 hom. )

Consequence

LRBA
NM_001364905.1 missense

Scores

Clinical Significance

Uncertain significance criteria provided, multiple submitters, no conflicts U:2

Conservation

PhyloP100: 0.667

Variant links:

Genes affected

LRBA (HGNC:1742): (LPS responsive beige-like anchor protein) The protein encoded by this gene is a member of the WDL-BEACH-WD (WBW) gene family. Its expression is induced in B cells and macrophages by bacterial lipopolysaccharides (LPS). The encoded protein associates with protein kinase A and may be involved in leading intracellular vesicles to activated receptor complexes, which aids in the secretion and/or membrane deposition of immune effector molecules. Defects in this gene are associated with the disorder common variable immunodeficiency-8 with autoimmunity. Two transcript variants encoding different isoforms have been found for this gene. [provided by RefSeq, Dec 2012]

LRBA links:

Genome browser will be placed here

ACMG classification

Classification made for transcript

Verdict is Uncertain_significance. Variant got 1 ACMG points.

PM2

Very rare variant in population databases, with high coverage;

BP4

Computational evidence support a benign effect (MetaRNN=0.30959278).

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	MANE	Protein	UniProt
LRBA	NM_001364905.1 linkuse as main transcript	c.6852A>C	p.Gln2284His	missense_variant	45/57	ENST00000651943.2	NP_001351834.1

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	TSL	MANE	Protein	Appris	UniProt
LRBA	ENST00000651943.2 linkuse as main transcript	c.6852A>C	p.Gln2284His	missense_variant	45/57		NM_001364905.1	ENSP00000498582	P3

Frequencies

GnomAD3 genomes

AF:

0.000191

AC:

AN:

152168

Hom.:

Cov.:

show subpopulations

Gnomad AFR

AF:

0.0000965

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:

0.0000942

Gnomad MID

AF:

0.00

Gnomad NFE

AF:

0.000353

Gnomad OTH

AF:

0.00

GnomAD3 exomes

AF:

0.000124

AC:

AN:

250924

Hom.:

AF XY:

0.000103

AC XY:

AN XY:

135614

show subpopulations

Gnomad AFR exome

AF:

0.000123

Gnomad AMR exome

AF:

0.00

Gnomad ASJ exome

AF:

0.00

Gnomad EAS exome

AF:

0.00

Gnomad SAS exome

AF:

0.00

Gnomad FIN exome

AF:

0.0000925

Gnomad NFE exome

AF:

0.000238

Gnomad OTH exome

AF:

0.00

GnomAD4 exome

AF:

0.000387

AC:

565

AN:

1461464

Hom.:

Cov.:

AF XY:

0.000366

AC XY:

266

AN XY:

727014

show subpopulations

Gnomad4 AFR exome

AF:

0.0000598

Gnomad4 AMR exome

AF:

0.00

Gnomad4 ASJ exome

AF:

0.0000383

Gnomad4 EAS exome

AF:

0.00

Gnomad4 SAS exome

AF:

0.00

Gnomad4 FIN exome

AF:

0.0000562

Gnomad4 NFE exome

AF:

0.000490

Gnomad4 OTH exome

AF:

0.000232

GnomAD4 genome

AF:

0.000191

AC:

AN:

152168

Hom.:

Cov.:

AF XY:

0.000148

AC XY:

AN XY:

74330

show subpopulations

Gnomad4 AFR

AF:

0.0000965

Gnomad4 AMR

AF:

0.00

Gnomad4 ASJ

AF:

0.00

Gnomad4 EAS

AF:

0.00

Gnomad4 SAS

AF:

0.00

Gnomad4 FIN

AF:

0.0000942

Gnomad4 NFE

AF:

0.000353

Gnomad4 OTH

AF:

0.00

Alfa

AF:

0.000202

Hom.:

Bravo

AF:

0.000159

TwinsUK

AF:

0.000270

AC:

ALSPAC

AF:

0.000519

AC:

ESP6500AA

AF:

0.00

AC:

ESP6500EA

AF:

0.000581

AC:

ExAC

AF:

0.000132

AC:

EpiCase

AF:

0.000218

EpiControl

AF:

0.000119

ClinVar

Significance: Uncertain significance

Submissions summary: Uncertain:2

Revision: criteria provided, multiple submitters, no conflicts

LINK: link

Submissions by phenotype

Combined immunodeficiency due to LRBA deficiency

Uncertain:1

Uncertain significance, criteria provided, single submitter

clinical testing

Labcorp Genetics (formerly Invitae), Labcorp

Dec 11, 2023

This sequence change replaces glutamine, which is neutral and polar, with histidine, which is basic and polar, at codon 2295 of the LRBA protein (p.Gln2295His). This variant is present in population databases (rs140538555, gnomAD 0.02%). This variant has not been reported in the literature in individuals affected with LRBA-related conditions. ClinVar contains an entry for this variant (Variation ID: 567991). Advanced modeling of protein sequence and biophysical properties (such as structural, functional, and spatial information, amino acid conservation, physicochemical variation, residue mobility, and thermodynamic stability) performed at Invitae indicates that this missense variant is not expected to disrupt LRBA protein function with a negative predictive value of 80%. 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. -

Inborn genetic diseases

Uncertain:1

Uncertain significance, criteria provided, single submitter

clinical testing

Ambry Genetics

Aug 12, 2021

The c.6885A>C (p.Q2295H) alteration is located in exon 46 (coding exon 45) of the LRBA gene. This alteration results from a A to C substitution at nucleotide position 6885, causing the glutamine (Q) at amino acid position 2295 to be replaced by a histidine (H). 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

0.24

BayesDel_addAF

Benign

-0.043

BayesDel_noAF

Uncertain

-0.010

CADD

Benign

DANN

Uncertain

1.0

DEOGEN2

Benign

0.39

.;T;.;.

Eigen

Benign

0.12

Eigen_PC

Benign

0.16

FATHMM_MKL

Uncertain

0.83

LIST_S2

Uncertain

0.91

D;D;D;D

M_CAP

Uncertain

0.097

MetaRNN

Benign

0.31

T;T;T;T

MetaSVM

Uncertain

-0.039

MutationAssessor

Benign

1.6

.;L;.;.

MutationTaster

Benign

1.0

D;D;D;D

PrimateAI

Uncertain

0.70

PROVEAN

Uncertain

-2.8

D;D;.;D

REVEL

Uncertain

0.57

Sift

Benign

0.035

D;D;.;D

Sift4G

Benign

0.12

T;T;.;T

Polyphen

0.11

B;D;.;.

Vest4

0.44

MutPred

0.38

.;Gain of disorder (P = 0.0813);.;.;

MVP

0.61

MPC

0.11

ClinPred

0.23

GERP RS

3.5

RBP_binding_hub_radar

0.0

RBP_regulation_power_radar

1.7

Varity_R

0.69

gMVP

0.70

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