"Electrifying dysmorphology": Potassium channelopathies causing dysmorphic syndromes.

Area of Science:

• Genetics
• Neuroscience
• Developmental Biology

Background:

• Potassium channels are vital membrane proteins with diverse biological roles.
• Mutations in potassium channels typically cause acute neurological or cardiac dysfunction.
• A rare subgroup of potassium channelopathies presents as developmental disorders.

Purpose of the Study:

• To review a distinct subgroup of rare potassium channelopathies presenting with developmental disorders.
• To aid in the recognition of these conditions by providing detailed clinical descriptions and photographs.
• To highlight the potential for targeted therapies based on genetic insights.

Main Methods:

• Literature review of rare potassium channelopathies with developmental features.
• Clinical phenotyping including detailed descriptions and photographic examples.
• Review of genetic mutation characterization and potential therapeutic strategies.

Main Results:

• Identified seven rare potassium channelopathies with developmental features: Andersen-Tawil, Birk-Barel, Cantú, Keppen-Lubinsky, Temple-Baraitser, Zimmerman-Laband, and Bauer-Tartaglia/FHEIG syndromes.
• Clinical presentations include intellectual disability, craniofacial dysmorphism, and other physical anomalies.
• Functional studies of genetic mutations have identified potential candidate therapies.

Conclusions:

• Potassium channelopathies should be considered in the differential diagnosis of developmental disorders.
• Prompt recognition of these rare conditions is crucial for timely intervention.
• Genetic insights into these disorders can drive the development of targeted, disease-modifying therapies.