Hearing loss can be defined as conductive or sensorineural. Conductive hearing loss occurs due to dysfunction of the outer or middle ear, which prevents transmission of sound waves from reaching the inner ear. Sensorineural hearing loss, on the other hand, is the result of inner ear or auditory nerve dysfunction preventing neuronal transmission to the brain. In developed countries, approximately 1/1,000 children have severe or profound hearing loss at birth or during childhood. In most cases, hearing loss is a multifactorial disorder caused by genetic and environmental factors. Clinically, it has many different presentations, from mild to profound, including low and high-pitch patterns. Non-syndromic forms are responsible for about 70% of the cases of hereditary etiology and syndromic cases represent 30% of them. Among the patterns of inheritance, autosomal recessive remains the most common form of inheritance, although it can be autosomal dominant, X-linked or mitochondrial.
The Igenomix Syndromic and Nonsyndromic Deafness Precision Panel can be used to make an accurate and directed diagnosis as well as a differential diagnosis of hearing loss ultimately leading to a better management and prognosis of the disease. It provides a comprehensive analysis of the genes involved in this disease using next-generation sequencing (NGS) to fully understand the spectrum of relevant genes involved.
The clinical utility of this panel is:
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