GJB2 and otosclerosis: We also compared the ratios of EH in group with genetic variants of GJB2, SLC26A4, LMX1A and all the other causes of hearing loss, which comprises idiopathic, sudden sensorineural hearing loss, other genetic causes, otosclerosis, chronic otitis media related labyrinthitis, ANCA + vasculitis, postoperative labyringhitis, stroke- related, and cochlear nerve deficiency in Table 1.