4-150599064-G-T

Variant names:

• chr4-150599064-G-T
• rs35879351
• NM_001364905.1:c.5989C>A

Variant summary

Our verdict is Uncertain significance. Variant got 4 ACMG points: 4P and 0B. PM2 PP3_Moderate

The NM_001364905.1(LRBA):​c.5989C>A​(p.Arg1997Ser) variant causes a missense change. The variant was absent in control chromosomes in GnomAD project. 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. R1997C) has been classified as Likely benign.

• Frequency: Genomes: not found (cov: 32)
• Consequence: LRBA NM_001364905.1 missense
• Clinical Significance: Not reported in ClinVar
• Conservation: PhyloP100: 6.22

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]

ACMG classification

Verdict is Uncertain_significance. Variant got 4 ACMG points.

• PM2: Very rare variant in population databases, with high coverage
• PP3: Splicing scoreres supports a deletorius effect: Scorers claiming Pathogenic: max_spliceai. No scorers claiming Uncertain. No scorers claiming Benign.

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	MANE	Protein	UniProt
LRBA	NM_001364905.1	c.5989C>A	p.Arg1997Ser	missense_variant	Exon 38 of 57	ENST00000651943.2	NP_001351834.1

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	TSL	MANE	Protein	Appris	UniProt
LRBA	ENST00000651943.2	c.5989C>A	p.Arg1997Ser	missense_variant	Exon 38 of 57		NM_001364905.1	ENSP00000498582.2

Frequencies

GnomAD3 genomes Cov.: 32

GnomAD4 exome Cov.: 31

GnomAD4 genome Cov.: 32

Bravo AF: 0.00000378

ClinVar

Not reported in ClinVar

Computational scores

Source: dbNSFP v4.3

Name	Calibrated prediction	Score	Prediction
AlphaMissense	Pathogenic	0.77
BayesDel_addAF	Uncertain	0.14	D
BayesDel_noAF	Uncertain	-0.030
CADD	Pathogenic	35
DANN	Uncertain	1.0
DEOGEN2	Benign	0.20	.;T;.
Eigen	Pathogenic	0.76
Eigen_PC	Pathogenic	0.76
FATHMM_MKL	Uncertain	0.90	D
LIST_S2	Pathogenic	0.99	D;D;D
M_CAP	Benign	0.023	T
MetaRNN	Uncertain	0.73	D;D;D
MetaSVM	Benign	-0.53	T
MutationAssessor	Uncertain	2.3	M;M;.
PrimateAI	Pathogenic	0.83	D
PROVEAN	Pathogenic	-4.5	D;D;D
REVEL	Uncertain	0.31
Sift	Benign	0.035	D;D;D
Sift4G	Uncertain	0.034	D;D;D
Polyphen		0.98	D;D;.
Vest4		0.82
MutPred		0.60		Loss of MoRF binding (P = 0.0146);Loss of MoRF binding (P = 0.0146);Loss of MoRF binding (P = 0.0146);
MVP		0.63
MPC		0.34
ClinPred		0.98	D
GERP RS		5.5
RBP_binding_hub_radar		0.0
RBP_regulation_power_radar		1.8
Varity_R		0.69
gMVP		0.81

Splicing

Name	Calibrated prediction	Score	Prediction
SpliceAI score (max)		0.82		Details are displayed if max score is > 0.2
DS_DG_spliceai		0.82		Position offset: 4

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

Publications

LitVar

Other links and lift over

dbSNP: rs35879351; hg19: chr4-151520216;