GFAP and infection: The infection efficiency of AAV2.7m8‐gfaABC1D‐eGFP for SCs showed a decreasing trend from base‐to‐apex turn sequentially, which was consistent with the previously described pattern of GFAP expression in the inner ear.[47] In short, our results suggest that AAV2.7m8‐gfaABC1D‐eGFP can relatively specifically infect SCs with lower expression in HCs.