GENETICS. For the article “Disruption of the murine nuclear factor I-A gene (Nfia) results in perinatal lethality, hydrocephalus, and agenesis of the corpus callosum” by Liomar das Neves, Cynthia S. Duchala, Fatima Godinho, Musa A. Haxhiu, Clemencia Colmenares, Wendy B. Macklin, Christine E. Campbell, Kenneth G. Butz, and Richard M. Gronostajski, which appeared in number 21, October 12, 1999, of Proc. Natl. Acad. Sci. USA (96, 11946–11951), the authors note the following correction. The name Fatima Godinho is incorrect and should be Fatima Tolentino-Silva.