LRBA

Chr 4AR

LPS responsive beige-like anchor protein

Also known as: BGL, CDC4L, CVID8, LAB300, LBA, uc.147

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]

OMIMResearchGenerating clinical summary…

Primary Disease Associations & Inheritance

Immunodeficiency, common variable, 8, with autoimmunityMIM #614700
AR

Clinical highlights

Gene-disease validity (ClinGen)
combined immunodeficiency due to LRBA deficiency · ARDefinitivesufficient evidence for diagnostic panels
Interpreting a novel variant
Loss of function is the curated mechanism (Gene2Phenotype) and the gene is intolerant of it in the population — truncating, frameshift and canonical splice variants carry more prior weight here than missense.Curated gene-level mechanism — a prior for triage, not a per-variant call.
1
Active trials
58
Pubs (1 yr)
P/LP submissions
P/LP missense
0.42
LOEUF
LOF
Mechanism· G2P

Population Genetics & Constraint

gnomAD v4 — loss-of-function & missense intolerance

Moderate LoF intolerance
LoF Constraint?
0.42LOEUF
pLI 0.000
Z-score 7.59
OE 0.33 (0.260.42)
Moderately constrained

More LoF-intolerant than ~75% of genes

Missense Constraint?
0.69Z-score
OE missense 0.95 (0.910.99)
1419 obs / 1494.3 exp
Tolerant

Mild missense constraint

Observed / Expected Ratios?
LoF OE?0.33 (0.260.42)
00.351.4
Missense OE?0.95 (0.910.99)
00.61.4
Synonymous OE?1.06
01.21.6
LoF obs/exp: 49 / 149.0Missense obs/exp: 1419 / 1494.3Syn Z: -1.13

ClinVar Variant Classifications

0 submitted variants in ClinVar

Protein Context — Lollipop Plot

LRBA · protein map & ClinVar variants

Showing all ClinVar variants across the protein. Search a specific variant to highlight its position.