A Novel Claudinopathy Based on Claudin-10 Mutations

Area of Science:

• Molecular biology
• Human genetics
• Physiology

Background:

• Claudins form tight junctions, regulating paracellular transport.
• Claudin-10 has two isoforms: claudin-10a (anion channel) and claudin-10b (cation channel).
• The clinical significance of claudin-10 in humans was previously unclear.

Purpose of the Study:

• To review and synthesize recent findings on claudin-10 mutations.
• To describe a novel autosomal-recessive disorder linked to CLDN10 variants.
• To compare patient presentations and genetic findings.

Main Methods:

• Literature review of recent studies on CLDN10 gene variants.
• Analysis of patient data reporting kidney, exocrine gland, and skin dysfunction.
• Comparison of pathogenic variants and associated phenotypes.

Main Results:

• Several pathogenic variants in the CLDN10 gene have been identified.
• These variants lead to an autosomal-recessive disorder.
• Affected individuals exhibit dysfunction in kidneys, exocrine glands, and skin.

Conclusions:

• CLDN10 mutations cause a newly recognized human disorder.
• Claudin-10 plays a critical role in kidney, skin, and exocrine gland function.
• Further research is needed to fully understand the pathophysiology and therapeutic options.