4-150852021-C-G

Position:

• chr4-150852021-C-G

Variant summary

Our verdict is Likely benign. Variant got -2 ACMG points: 2P and 4B. PM2 BP4_Strong

The NM_001364905.1(LRBA):​c.3689G>C​(p.Gly1230Ala) variant causes a missense change involving the alteration of a non-conserved nucleotide. The variant was absent in control chromosomes in GnomAD project. In-silico tool predicts a benign outcome for this variant. 15/21 in silico tools predict a benign outcome for this variant. No clinical diagnostic laboratories have submitted clinical-significance assessments for this variant to ClinVar. Another variant affecting the same amino acid position, but resulting in a different missense (i.e. G1230D) has been classified as Benign.

• Frequency: Genomes: not found (cov: 32)
• Consequence: LRBA NM_001364905.1 missense
• Clinical Significance: Not reported in ClinVar
• Conservation: PhyloP100: -0.764

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 (HGNC:):

ACMG classification

Verdict is Likely_benign. Variant got -2 ACMG points.

• PM2: Very rare variant in population databases, with high coverage
• BP4: Computational evidence support a benign effect (MetaRNN=0.04147601).

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	MANE	Protein	UniProt
LRBA	NM_001364905.1	c.3689G>C	p.Gly1230Ala	missense_variant	23/57	ENST00000651943.2	NP_001351834.1

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	TSL	MANE	Protein	Appris	UniProt
LRBA	ENST00000651943.2	c.3689G>C	p.Gly1230Ala	missense_variant	23/57		NM_001364905.1	ENSP00000498582.2

Frequencies

GnomAD3 genomes Cov.: 32

GnomAD4 exome Cov.: 32

GnomAD4 genome Cov.: 32

ClinVar

Not reported in ClinVar

Computational scores

Source: dbNSFP v4.3

Name	Calibrated prediction	Score	Prediction
AlphaMissense	Benign	0.073
BayesDel_addAF	Benign	-0.24	T
BayesDel_noAF	Benign	-0.59
CADD	Benign	0.010
DANN	Benign	0.42
DEOGEN2	Benign	0.013	.;T;.
Eigen	Benign	-1.6
Eigen_PC	Benign	-1.6
FATHMM_MKL	Benign	0.021	N
LIST_S2	Benign	0.57	T;T;T
M_CAP	Benign	0.0072	T
MetaRNN	Benign	0.041	T;T;T
MetaSVM	Benign	-1.0	T
MutationAssessor	Benign	0.20	N;N;.
PrimateAI	Benign	0.22	T
PROVEAN	Benign	-0.52	N;N;N
REVEL	Benign	0.044
Sift	Benign	0.88	T;T;T
Sift4G	Benign	0.44	T;T;T
Polyphen		0.0	B;B;.
Vest4		0.068
MutPred		0.16		Gain of helix (P = 0.1736);Gain of helix (P = 0.1736);Gain of helix (P = 0.1736);
MVP		0.14
MPC		0.12
ClinPred		0.050	T
GERP RS		-5.5
RBP_binding_hub_radar		0.0
RBP_regulation_power_radar		1.7
Varity_R		0.021
gMVP		0.19

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

Other links and lift over

dbSNP: rs34708681; hg19: chr4-151773173;