DO_rare_slim X-linked nonsyndromic deafness X-linked deafness 7 ORDO:500188 DOID:0111738 disease_ontology An X-linked nonsyndromic deafness characterized by congenital, bilateral, mixed or conductive hearing loss and other ear anomalies that has_material_basis_in homozygous or hemizygous mutation in the GPRASP2 gene on chromosome Xq22.1. DFNX7 MIM:301018 X-linked external auditory canal atresia-dilated internal auditory canal-facial dysmorphism syndrome