Copyright © American Speech-Language-Hearing Association From: X-Linked Hearing Loss: Two Gene Mutation Examples Provide Generalizable Implications for Clinical Care Am J Audiol. 2014;23(2):190-200. doi:10.1044/2014_AJA-13-0040 Legend: SMPX Families 1 and 2 auditory phenotype: Longitudinal air conduction thresholds for the male and female subjects from SMPX Families 1 and 2 are combined. The results for male subjects indicate the onset of hearing loss in the first decade, with rapid decline in the high frequencies. The results for female subjects indicate the variation in the auditory phenotype. Date of download: 9/30/2017 Copyright © American Speech-Language-Hearing Association