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Cardiome Pharma Corp.'s (COM.TO) Pivotal AF Study Achieves Primary Endpoint


10/19/2005 5:12:30 PM

VANCOUVER, Canada, and DEERFIELD, IL, USA, Dec. 20 /PRNewswire-FirstCall/ -- Cardiome Pharma Corp (TSX: COM) and its co-development partner Fujisawa Healthcare, Inc. today announced results from their recently completed 416- patient atrial arrhythmia phase 3 clinical study, called ACT 1. The study showed that of the 237 patients with recent-onset atrial fibrillation (AF), 52% of those receiving an IV dose of RSD1235 converted to normal heart rhythm, as compared to 4% of placebo patients (p less than .001).

The ACT 1 study data suggests that RSD1235 is also safe and well- tolerated in the targeted patient population. In the 30 day interval following drug administration, serious adverse events occurred in 18% of placebo patients and 13% of drug group patients. Potentially drug-related serious adverse events occurred in 0% of placebo patients and 1.4% of patients receiving RSD1235. There were no cases of drug-related "Torsades de Pointes", a well-characterized arrhythmia which is an occasional side effect of many current anti-arrhythmia drugs.

ACT 1 measured the safety and efficacy of intravenous RSD1235 in 416 patients with atrial arrhythmia. The study looked at three sub-groups of patients, including 237 patients with recent-onset AF (more than 3 hrs but less than 7 days), 119 patients with longer-term AF (more than 7 days but less than 45 days) and 60 patients with atrial flutter. The primary endpoint in ACT 1 was conversion of recent-onset AF to normal heart rhythm for a period of at least 1 minute post-dosing within 90 minutes of the start of dosing. The study was initiated in August 2003, and was carried out in 45 centers in the US, Canada and Scandinavia. Co-chairmen of the study steering committee were Dr. Denis Roy from the Montreal Heart Institute and Dr. Craig Pratt from the Baylor College of Medicine. The independent Data Safety Monitoring Board was chaired by Prof. John Camm of St. George's Hospital, London U.K.

In the overall AF study population (AF duration of 3 hours to 45 days) 38% of patients who were dosed with RSD1235 experienced termination of AF, as compared to 3% of placebo patients (p less than .001). In the longer-term AF population, 8% of patients who were dosed with RSD1235 had their AF terminated, as compared to 0% of placebo patients. In the recent-onset AF population, 52% of those who were dosed with RSD1235 experienced conversion to normal heart rhythm, as compared to 4% of placebo patients (p less than .001).

"We are excited about the clear and decisive results shown in this important study of RSD 1235." stated Bob Rieder, President and CEO of Cardiome. "As promised, we have disclosed this top-line data as soon as we have received it. We look forward to disclosing additional detail from this study in two instalments. The first will occur in January in the form of a press release providing specific detail on the atrial flutter sub-study. Full study details will be presented at the Heart Rhythm Society meeting in New Orleans on May 4-7, 2005."

In October 2003, Cardiome licensed North American rights to the intravenous formulation of RSD1235 to Fujisawa Healthcare, Inc. Cardiome retains worldwide rights to oral RSD1235 for the prevention of AF recurrence and all rights to the intravenous formulations outside of Canada, US and Mexico. Intravenous RSD1235 is currently being evaluated in two further Phase 3 clinical trials, entitled ACT 2 and ACT 3.

AF is an arrhythmia (erratic heartbeat) of the upper storage chambers of the heart. The disease is caused by irregular electrical impulses that regulate the heart's rate and rhythm. AF is often associated with other forms of heart disease and is a leading contributor to stroke, congestive heart failure and sudden cardiac arrest. In 1999 there were 6.2 million cases of atrial arrhythmia in the developed world. The worldwide market for drugs to treat atrial fibrillation, the main category of atrial arrhythmia, was US$1.16 billion in 1999, with approximately $800 million of this in the US alone. Currently available drugs to acutely treat AF lack sufficient efficacy and have serious safety risks. These safety issues include risk of drug induced pro-arrhythmia and other cardiac liabilities. Market growth will be driven by an aging population and safer alternatives such as RSD1235.

About Cardiome Pharma Corp.

Cardiome Pharma Corp. is a product-focused cardiovascular drug development company with three clinical drug programs, two of which focus on atrial arrhythmia (intravenous and oral dosing) and one directed at congestive heart failure.

Cardiome's lead anti-arrhythmic product, RSD1235, is designed to be an acute-use, intravenous (IV) administration treatment for termination of atrial fibrillation (AF) and a chronic-use oral drug for the maintenance of normal heart rhythm following termination of AF. RSD1235 selectively blocks ion channels in the heart that are known to be active during episodes of AF. Controlled-release oral formulations of RSD1235 are currently being evaluated in clinical trials.

Cardiome's lead drug in the congestive heart failure (CHF) area is oxypurinol, a xanthine oxidase inhibitor. CHF is the failure of the heart to pump blood at a rate sufficient to support the body's needs. Oxypurinol is currently in a Phase 2 clinical trial that will evaluate the safety and effectiveness of oxypurinol in the treatment of patients with moderate to severe symptomatic CHF.

Cardiome is traded on the Toronto Stock Exchange (COM) and the NASDAQ National Market (CRME). Further information about Cardiome can be found at http://www.cardiome.com/.

About Fujisawa Healthcare, Inc.

Fujisawa Healthcare, Inc., headquartered in Deerfield, Ill., develops, manufactures, and markets proprietary pharmaceutical products in the United States and abroad. Fujisawa Healthcare, Inc. is a subsidiary of Fujisawa Pharmaceutical Co., Ltd. based in Osaka, Japan. Fujisawa Pharmaceutical Co., Ltd., founded in 1894, is a leading pharmaceutical manufacturer with a major presence in the global market. Additional information on Fujisawa Healthcare, Inc. and its products can be found on the Internet at http://www.fujisawa.com/. On April 1, 2005, Astellas Pharma Inc. will be created by the merger of Fujisawa Pharmaceutical Co., Ltd. and Yamanouchi Pharmaceutical Co., Ltd. (subject to regulatory approval). More information regarding the formation of Astellas Pharma Inc. can be found at http://www.astellas.com/.

For Further Information: Don Graham Cardiome Pharma Corp Director of Corporate Communication (604) 676-6963 or Toll Free: 1-800-330-9928 Email: dgraham@cardiome.com Maribeth Landwehr Fujisawa Healthcare, Inc. Manager, Corporate Communications (847) 317-8988 E-mail: maribeth_landwehr@fujisawa.com Forward-Looking Statement Disclaimer

Statements contained in this news release relating to future results, events and expectation are forward-looking statements within the meaning of the United States Private Securities Litigation Reform Act of 1995. These forward-looking statements involve known and unknown risks, uncertainties and other factors which may cause the actual results, performance or achievement of the company, or industry results, to be materially different from any future results, performance or achievements expressed or implied by such statements. Such factors include, among others, those described in the Company's annual report on Form 40-F. The Toronto Stock Exchange has not reviewed and does not accept responsibility for the adequacy or accuracy of this release.

Cardiome Pharma Corp.

CONTACT: Don Graham, Cardiome Pharma Corp, Director of CorporateCommunication, (604) 676-6963 or Toll Free: 1-800-330-9928, Email:dgraham@cardiome.com; Maribeth Landwehr, Fujisawa Healthcare, Inc.,Manager, Corporate Communications, (847) 317-8988, E-mail:maribeth_landwehr@fujisawa.com


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