LAMB3 (Laminin subunit beta-3) variants and mutations

LAMB3 (also known as Laminin subunit beta-3) is a human protein-coding gene encoding a laminin subunit beta-3 protein. It contributes the beta3 chain of laminin-332, an essential ligand for hemidesmosomal adhesion at the epidermal basement membrane. Biallelic loss-of-function variants cause junctional epidermolysis bullosa, and selected variants can also cause amelogenesis imperfecta. This analysis covers 2,045 LAMB3 variants and mutations. Of these, 70% have computational variant effect predictions. Disease context includes junctional epidermolysis bullosa, non-Herlitz type, Junctional epidermolysis bullosa, Herlitz type, and junctional epidermolysis bullosa Herlitz type. Example LAMB3 variants include M1?, M1I, and M1L.

Variant analysis overview

Variant and mutation evidence

Clinical, disease, and population context

Protein structure and variant hotspots

Data sources

Evidence in this analysis draws on EBI Proteins Variation, UniProt, gnomAD v4, EuropePMC, 3D Hotspot Analysis, Interaction Network Analysis, AlphaFold DB, gnomAD constraint, Open Targets, MaveDB, LitVar.

Notable LAMB3 variants

Examples include M1?, M1I, M1L, R2S, P3Q, P3R, P3S, F4L. Listed records include available protein-change notation, database identifiers, clinical classifications, computational predictions, population evidence, experimental measurements, and disease context.