SOUTH SAN FRANCISCO, CA--(Marketwire - August 29, 2008) - Cytokinetics, Incorporated (NASDAQ: CYTK) announced today that data from an ongoing Phase I/II clinical trial of ispinesib are scheduled to be presented as a poster presentation at the 2008 American Society of Clinical Oncology (ASCO) Breast Cancer Symposium, to be held September 5-7, 2008 at the Hilton Washington in Washington, DC.