GJB2 and deafness: We recently developed a capsid-modified AAV vector (AAV-Sia6e) with high infection tropism for Deiters’ cells, Hensen’s cells, inner and outer sulcus cells, and fibrocytes expressing the GJB2 gene, and its AAV-mediated efficient delivery of the GJB2 gene improved the auditory responses in an adult mouse model of Gjb2-related deafness (our unpublished observations).