RecruitingA Comparative Analysis of Speech Perception Between Cochlear Implant Patients and DFNB9 Patients Receiving Gene TherapyThis cohort study aims to explore the trends and differences in multidimensional perceptual levels of patients after cochlear implants or gene therapy, as well as to comprehensively assess the efficacy of gene therapy for congenital deafness, thus providing a reference for making a well-rounded postoperative rehabilitation protocol for gene therapy patients.