4-150852021-C-G

Variant names:

• chr4-150852021-C-G
• rs34708681
• NM_001364905.1:c.3689G>C

Variant summary

Our verdict is Likely benign. The variant received -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. 16/22 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
• Publications: 2 publications found

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 Gene-Disease associations (from GenCC):

• combined immunodeficiency due to LRBA deficiency

  Inheritance: AR Classification: DEFINITIVE, STRONG, SUPPORTIVE Submitted by: ClinGen, Orphanet, Labcorp Genetics (formerly Invitae), Genomics England PanelApp, G2P

ENSG00000298996 (HGNC:):

ACMG classification

Our verdict: Likely_benign. The variant received -2 ACMG points.

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

Variant Effect in Transcripts

ACMG analysis was done for transcript: NM_001364905.1. You can select a different transcript below to see updated ACMG assignments.

RefSeq Transcripts

Sel.	Gene	Transcript	Tags	HGVSc	HGVSp	Effect	Exon Rank	Protein	UniProt
	LRBA	NM_001364905.1	MANE Select	c.3689G>C	p.Gly1230Ala	missense	Exon 23 of 57	NP_001351834.1	A0A494C1L5
	LRBA	NM_001440430.1		c.3689G>C	p.Gly1230Ala	missense	Exon 23 of 58	NP_001427359.1
	LRBA	NM_006726.5		c.3689G>C	p.Gly1230Ala	missense	Exon 23 of 58	NP_006717.2

Ensembl Transcripts

Sel.	Gene	Transcript	Tags	HGVSc	HGVSp	Effect	Exon Rank	Protein	UniProt
	LRBA	ENST00000651943.2	MANE Select	c.3689G>C	p.Gly1230Ala	missense	Exon 23 of 57	ENSP00000498582.2	A0A494C1L5
	LRBA	ENST00000357115.9	TSL:1	c.3689G>C	p.Gly1230Ala	missense	Exon 23 of 58	ENSP00000349629.3	P50851-1
	LRBA	ENST00000510413.5	TSL:1	c.3689G>C	p.Gly1230Ala	missense	Exon 23 of 57	ENSP00000421552.1	P50851-2

Frequencies

GnomAD3 genomes Cov.: 32

GnomAD4 exome Cov.: 32

GnomAD4 genome Cov.: 32

ClinVar

Not reported in ClinVar

Computational scores

Source: dbNSFP v4.9

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
M_CAP	Benign	0.0072	T
MetaRNN	Benign	0.041	T
MetaSVM	Benign	-1.0	T
MutationAssessor	Benign	0.20	N
PhyloP100		-0.76
PrimateAI	Benign	0.22	T
PROVEAN	Benign	-0.52	N
REVEL	Benign	0.044
Sift	Benign	0.88	T
Sift4G	Benign	0.44	T
Polyphen		0.0	B
Vest4		0.068
MutPred		0.16		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
Mutation Taster		=97/3	polymorphism

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

Other links and lift over

dbSNP: rs34708681; hg19: chr4-151773173;