Correction
After the April issue went to press, a small error and omission was noted in the article “Topiramate Treatment for Heavy Drinkers: Moderation by a GRIK1 Polymorphism” by Henry R. Kranzler, M.D., et al. (Am J Psychiatry 2014; 171:Original article: 445–452). In the 4th paragraph of the introduction, the sentence should read “Topiramate's effects on glutamate receptors are most potent and selective for those containing the GluK1 and GluK2 (formerly referred to as GluR5 and GluR6) subunits (encoded by GRIK1 and GRIK2, respectively).” This information was updated for the online edition of the article and for the accompanying PDF.