SOUTH SAN FRANCISCO, CA -- (MARKET WIRE) -- April 26, 2007 -- Cytokinetics, Incorporated (NASDAQ: CYTK) reported revenues from research and development collaborations of $3.2 million for the first quarter of 2007. Net loss for the first quarter of 2007 was $11.7 million, or $0.25 per share. As of March 31, 2007, cash, cash equivalents, restricted cash and marketable securities totaled $175.7 million.