Research Progress of MYO6 Variant-Associated Hereditary Hearing Loss

Area of Science:

• Genetics
• Otolaryngology
• Molecular Biology

Background:

• Hearing loss (HL) is the most common sensory disorder, with genetics underlying ~60% of congenital cases.
• Hereditary hearing loss often involves complex genetic factors and varying degrees of impairment.
• The MYO6 gene encodes myosin VI, essential for inner ear hair cell function and stereocilia structure.

Purpose of the Study:

• To review the current understanding of MYO6-related pathogenesis in hearing loss.
• To provide an overview of MYO6 gene structure, function, and associated diseases.
• To explore genotype-phenotype correlations and emerging gene therapy strategies for MYO6-related hearing loss.

Main Methods:

• Literature review of MYO6 gene variants and associated hearing loss.
• Analysis of MYO6 gene structure and protein function.
• Summary of genotype-phenotype correlations and preclinical gene therapy approaches.

Main Results:

• MYO6 variants are implicated in hearing loss at loci DFNA22 and DFNB37.
• Different MYO6 variants lead to diverse forms and severity of sensorineural hearing loss.
• Understanding genotype-phenotype correlations is crucial for managing this heterogeneous disorder.

Conclusions:

• MYO6 plays a critical role in auditory function, and its variants cause significant hearing loss.
• Further research into MYO6 pathogenesis and gene therapy holds promise for treating hereditary hearing loss.
• Enhanced understanding facilitates improved genetic counseling for affected families.