1. MyoKardia, South San Francisco, CA 94080, USA.
2. Department of Genetics, Harvard Medical School, Boston, MA 02115, USA.
3. Department of Molecular, Cellular, and Developmental Biology and BioFrontiers Institute, University of Colorado, Boulder, CO 80309, USA.
4. Department of Biochemistry, Stanford University School of Medicine, Stanford, CA 94305, USA.
5. Division of Cardiovascular Medicine, Brigham and Women’s Hospital, Boston, MA 02115, USA.
6. Howard Hughes Medical Institute, Chevy Chase, MD 20815, USA.