Ahmed A. Alfares MD, Melissa A. Kelly MS, Gregory McDermott BA, Birgit H. Funke PhD, Matthew S. Lebo PhD, Samantha B. Baxter MS, Jun Shen PhD, Heather M. McLaughlin PhD, Eugene H. Clark BM, Larry J. Babb BS, Stephanie W. Cox BS, Steven R. DePalma PhD, Carolyn Y. Ho MD, J. G. Seidman PhD, Christine E. Seidman MD and Heidi L. Rehm PhD

Genet Med advance online publication, January 22, 2015; doi:10.1038/gim.2014.205

In the Advance Online Publication version, of this article, there is a mistake on page 2 in the first paragraph of the Materials and Methods section. The sentence beginning “Among 3,459 probands initially referred for HCM genetic testing ...” the correct number of probands is 3,473 not 3,459. The authors regret the error.