GJB2 and sensorineural hearing loss disorder: This is expected based on the similarity of the incidence rates of detection of c.235delC of GJB2 between the one (0.63% (1 [SH166-367]/160 [our total SNHL cohort]) calculated from group I and reported figures from normal hearing Korean subjects (0.44%–1.25%) (Tables 1 and 2).4,27