In the article “Synaptic Autoregulation by Metalloproteases and γ-Secretase,” by Sophie Restituito, Latika Khatri, Ipe Ninan, Paul M. Mathews, Xin Liu, Richard J. Weinberg, and Edward B. Ziff, which originally appeared on pages 12083–12093 of the August 24, 2011 issue, the wrong NIH grant number, R01 AG13620 (to E.B.Z.), was cited. The correct NIH grant number is R37 AG13620 (to E.B.Z.). The authors regret this mistake.