Skip to content
GenoLensGenoLens

SCNN1G

Chr 16p12.2

sodium channel epithelial 1 subunit gamma

Aliases:
ENaCgamma, SCNEG
MANE:
ENST00000300061.3

Annotations refreshed 1 month ago.

Predicted protein structure

Clinical relevance (Genomics England PanelApp)

Diagnostic Grade (Green)

  • Extreme early-onset hypertension

    BOTH monoallelic and biallelic, autosomal or pseudoautosomal
  • Non-CF bronchiectasis

    MONOALLELIC, autosomal or pseudoautosomal, NOT imprinted
  • Renal tubulopathies

    BOTH monoallelic and biallelic, autosomal or pseudoautosomal
  • Respiratory ciliopathies including non-CF bronchiectasis

    MONOALLELIC, autosomal or pseudoautosomal, NOT imprinted
  • Familial pulmonary fibrosis

  • Fetal anomalies

    BIALLELIC, autosomal or pseudoautosomal
  • Primary ciliary disorders

  • Rare multisystem ciliopathy disorders

+2 more panels — install the extension to see the full list inline on any page.

Disease associations (Open Targets)

  • bronchiectasis with or without elevated sweat chloride 3

    0.67
  • Liddle syndrome

    0.64
  • Liddle syndrome 2

    0.63
  • pseudohypoaldosteronism, type IB1, autosomal recessive

    0.63
  • Generalized pseudohypoaldosteronism type 1

    0.62
  • hypertensive disorder

    0.61
  • idiopathic bronchiectasis

    0.60
  • congestive heart failure

    0.58
  • cardiac arrhythmia

    0.56
  • pseudohypoaldosteronism type 1

    0.54

Score is the Open Targets composite evidence score (0-1). Higher = stronger gene-disease association.

Protein function (UniProt)

Epithelial sodium channel subunit gamma

This is one of the three pore-forming subunits of the heterotrimeric epithelial sodium channel (ENaC), a critical regulator of sodium balance and fluid homeostasis (PubMed:30251954, PubMed:32729833, PubMed:7550319, PubMed:7762608, PubMed:9792722). ENaC operates in epithelial tissues, where it mediates the electrodiffusion of sodium ions from extracellular fluid through the apical membrane of cells, with water following osmotically (PubMed:24124190). It plays a key role in maintaining sodium homeostasis through electrogenic sodium reabsorption in the kidneys (PubMed:12107247, PubMed:7550319, PubMed:8640238). Additionally, ENaC is essential for airway surface liquid homeostasis, which is crucial for proper mucus clearance (PubMed:18507830, PubMed:19017867, PubMed:24124190)

Curated MONDO disease pages that list SCNN1G among their top associated genes.

Data sources: HGNC (CC BY 4.0), AlphaFold (CC BY 4.0, Jumper et al. Nature 2021), Genomics England PanelApp (CC BY 4.0), ClinGen, Open Targets (CC0), UniProt.

Not for sole clinical decision-making. Always verify against primary sources.