4-150893091-T-A

Variant names:

• chr4-150893091-T-A
• rs1011931648
• NM_001364905.1:c.2126A>T
• LRBA p.Asn709Ile

Variant summary

Our verdict is Uncertain significance. The variant received 0 ACMG points: 2P and 2B. PM2 BP4_Moderate

The NM_001364905.1(LRBA):​c.2126A>T​(p.Asn709Ile) variant causes a missense change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.00000186 in 1,612,078 control chromosomes in the GnomAD database, with no homozygous occurrence. In-silico tool predicts a benign outcome for this variant. 14/22 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. N709S) has been classified as Uncertain significance.

• Frequency:
  • Genomes: 𝑓 0.0000066 (0 hom., cov: 32)
  • Exomes 𝑓: 0.0000014 (0 hom.)
• Consequence: LRBA NM_001364905.1 missense
• Clinical Significance: Not reported in ClinVar
• Conservation: PhyloP100: 1.90
• Publications: 0 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: Labcorp Genetics (formerly Invitae), Genomics England PanelApp, Orphanet, G2P, ClinGen

ACMG classification

Our verdict: Uncertain_significance. The variant received 0 ACMG points.

• PM2: Very rare variant in population databases, with high coverage
• BP4: Computational evidence support a benign effect (MetaRNN=0.19383729).

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.2126A>T	p.Asn709Ile	missense	Exon 17 of 57	NP_001351834.1	A0A494C1L5
	LRBA	NM_001440430.1		c.2126A>T	p.Asn709Ile	missense	Exon 17 of 58	NP_001427359.1
	LRBA	NM_006726.5		c.2126A>T	p.Asn709Ile	missense	Exon 17 of 58	NP_006717.2

Ensembl Transcripts

Sel.	Gene	Transcript	Tags	HGVSc	HGVSp	Effect	Exon Rank	Protein	UniProt
	LRBA	ENST00000651943.2	MANE Select	c.2126A>T	p.Asn709Ile	missense	Exon 17 of 57	ENSP00000498582.2	A0A494C1L5
	LRBA	ENST00000357115.9	TSL:1	c.2126A>T	p.Asn709Ile	missense	Exon 17 of 58	ENSP00000349629.3	P50851-1
	LRBA	ENST00000510413.5	TSL:1	c.2126A>T	p.Asn709Ile	missense	Exon 17 of 57	ENSP00000421552.1	P50851-2

Frequencies

GnomAD3 genomes AF: 0.00000658 AC: 1 AN: 152014 Hom.: 0 Cov.: 32

Gnomad AFR AF: 0.00

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: 0.00

Gnomad MID AF: 0.00

Gnomad NFE AF: 0.0000147

Gnomad OTH AF: 0.00

GnomAD4 exome AF: 0.00000137 AC: 2 AN: 1460064 Hom.: 0 Cov.: 29 AF XY: 0.00000275 AC XY: 2 AN XY: 726376

African (AFR) AF: 0.00 AC: 0 AN: 33446

American (AMR) AF: 0.00 AC: 0 AN: 44664

Ashkenazi Jewish (ASJ) AF: 0.00 AC: 0 AN: 26100

East Asian (EAS) AF: 0.00 AC: 0 AN: 39556

South Asian (SAS) AF: 0.00 AC: 0 AN: 85980

European-Finnish (FIN) AF: 0.00 AC: 0 AN: 53340

Middle Eastern (MID) AF: 0.00 AC: 0 AN: 5758

European-Non Finnish (NFE) AF: 0.00000180 AC: 2 AN: 1110906

Other (OTH) AF: 0.00 AC: 0 AN: 60314

GnomAD4 genome AF: 0.00000658 AC: 1 AN: 152014 Hom.: 0 Cov.: 32 AF XY: 0.0000135 AC XY: 1 AN XY: 74248

African (AFR) AF: 0.00 AC: 0 AN: 41392

American (AMR) AF: 0.00 AC: 0 AN: 15244

Ashkenazi Jewish (ASJ) AF: 0.00 AC: 0 AN: 3472

East Asian (EAS) AF: 0.00 AC: 0 AN: 5196

South Asian (SAS) AF: 0.00 AC: 0 AN: 4804

European-Finnish (FIN) AF: 0.00 AC: 0 AN: 10580

Middle Eastern (MID) AF: 0.00 AC: 0 AN: 316

European-Non Finnish (NFE) AF: 0.0000147 AC: 1 AN: 68006

Other (OTH) AF: 0.00 AC: 0 AN: 2092

Alfa AF: 0.00 Hom.: 0

Bravo AF: 0.00000756

ClinVar

Not reported in ClinVar

Computational scores

Source: dbNSFP v4.9

Name	Calibrated prediction	Score	Prediction
AlphaMissense	Benign	0.091
BayesDel_addAF	Benign	-0.12	T
BayesDel_noAF	Benign	-0.41
CADD	Benign	21
DANN	Uncertain	0.99
DEOGEN2	Benign	0.14	T
Eigen	Benign	-0.12
Eigen_PC	Benign	0.0072
FATHMM_MKL	Uncertain	0.88	D
LIST_S2	Uncertain	0.95	D
M_CAP	Benign	0.0091	T
MetaRNN	Benign	0.19	T
MetaSVM	Benign	-1.0	T
MutationAssessor	Benign	0.0	N
PhyloP100		1.9
PrimateAI	Benign	0.43	T
PROVEAN	Uncertain	-2.8	D
REVEL	Benign	0.059
Sift	Uncertain	0.016	D
Sift4G	Uncertain	0.0050	D
RBP_binding_hub_radar		0.0
RBP_regulation_power_radar		1.7
Varity_R		0.17
gMVP		0.18
Mutation Taster		=84/16	polymorphism

Splicing

Name	Calibrated prediction	Score	Prediction
SpliceAI score (max)		0.060		Details are displayed if max score is > 0.2

Find out detailed SpliceAI scores and Pangolin per-transcript scores at spliceailookup.broadinstitute.org

MaxEntScan Visualizer can be used to analyze the impact of this mutation on the neighboring sequence.

Other links and lift over

dbSNP: rs1011931648;

hg19: chr4-151814243;