PCDH19 (Protocadherin-19) variants and mutations

PCDH19 (also known as Protocadherin-19) is a human protein-coding gene encoding a protocadherin-19 protein. It mediates calcium-dependent cell adhesion in developing neural circuits, where mixed populations of variant and normal cells can disrupt network organization. Heterozygous loss-of-function variants classically cause clustering epilepsy in females with variable developmental and behavioral impairment. This analysis covers 1,713 PCDH19 variants and mutations. Of these, 71% have computational variant effect predictions. Disease context includes developmental and epileptic encephalopathy, 9, hereditary disease, and Seizure. Example PCDH19 variants include M1I, S3*, and L4F.

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, Protein Data Bank, AlphaFold DB, gnomAD constraint, Open Targets, ClinGen, MaveDB, LitVar.

Notable PCDH19 variants

Examples include M1I, S3*, L4F, L6V, P7L, P7Q, V8M, L9V. Listed records include available protein-change notation, database identifiers, clinical classifications, computational predictions, population evidence, experimental measurements, and disease context.