In most cases, theyhave considered the genetic-epidemiological and clinical-genetic peculiarities ofthe inherited forms of hearing loss, and a series of papers are devoted to themolecular-genetic analysis of the GJB2  gene or its singlemutations [17–21, 25–30].Some authors have obtained data on the specificity of the range and frequency ofseparate mutations in the GJB2  gene function in the studiedregion. The gene discussed is GJB2; the disease is hearing loss disorder.