[The high phenotypic variability of RYR1 gene mutations]

Area of Science:

• Genetics and Molecular Biology
• Muscle Physiology

Context:

• The RYR1 gene encodes ryanodine-receptor 1, essential for muscle excitation-contraction coupling.
• This receptor regulates calcium release from the endoplasmic reticulum, vital for muscle function.
• Mutations in RYR1 are associated with various clinical phenotypes.

Purpose:

• To describe two distinct and potentially misleading clinical phenotypes associated with pathogenic variants in the RYR1 gene.

Summary:

• This research investigates the RYR1 gene and its role in muscle contraction.
• Two unique patient cases with unusual symptoms linked to RYR1 mutations are presented.
• The findings contribute to understanding the diverse clinical presentations of RYR1-related disorders.

Impact:

• Enhances understanding of RYR1 gene mutation effects on muscle function.
• Provides insights into diagnosing and managing complex neuromuscular conditions.
• Contributes to the clinical genetics knowledge base for rare diseases.