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Bronchitol Cystic Fibrosis Dose Trial Results Positive
Date:8/11/2008

Bronchitol Demonstrates Dose-Related Improvements in Lung Function of

Cystic Fibrosis Patients

SYDNEY, Australia, Aug. 11 /Xinhua-PRNewswire-FirstCall/ -- Speciality pharmaceutical company Pharmaxis (ASX: PXS; Nasdaq: PXSL) today announced results from its Phase II trial, DPM-CF-202, in subjects with cystic fibrosis.

The trial achieved its primary end point of demonstrating a dose dependent improvement in lung function as measured by FVC (forced vital capacity) and FEV1 (the amount of air that can be forcibly exhaled in 1 second). At the end of the two-week Bronchitol treatment periods, changes in lung function were as follows:

-- 400 mg treatment group: FEV1 increased by 8.6%

(139 mls, p=0.0006 vs 40 mg)

-- 240 mg treatment group: FEV1 increased by 4.6% (87 mls)

-- 120 mg treatment group: FEV1 increased by 3.7% (42 mls)

-- 40 mg treatment group: FEV1 decreased by -1.6% (-33 mls)

FVC changed by +7.9% on 400 mg (p=0.0004 vs 40 mg), +3.9% on 240 mg, +1.5% on 120 mg and -0.6% on 40 mg.

Pharmaxis Chief Executive Officer Alan Robertson said, "The excellent result from this trial reaffirms that the 400 mg Bronchitol dose being used in the Phase 3 trials is optimal for its clinical effectiveness. We look forward to the results from the ongoing Phase 3 studies and to bringing Bronchitol to the market as rapidly as possible."

The study was an open, randomised comparison of 400mg, 240 mg, 120 mg and 40 mg of Bronchitol in 48 patients with cystic fibrosis at 12 centres across Canada and Argentina. Bronchitol was administered twice a day for 14 days in a crossover design.

Secondary endpoints of the study included other spirometry and quality of life measures. These measures also showed a positive effect for 400 mg Bronchitol on MMEF (maximum mid expiratory flow) and the respiratory domain of the cystic fibrosis quality of life questionnaire (CFQR).

Additionally, no serious adverse events emerged during the 400 mg treatment period and the adverse event profile was similar across all doses.

People affected by cystic fibrosis typically experience a decline in lung function of 1-2% per year during their life, as measured by FEV1.

Pharmaxis has received Orphan Drug Designation and fast track status from the Food and Drug Administration (FDA) for Bronchitol in cystic fibrosis.

Bronchitol is designed to hydrate the airway surface, improve lung hygiene and promote normal lung clearance. Additional data from this trial will be presented at a forthcoming scientific congress. A European, Pharmaxis sponsored, regulatory Phase III clinical trial, designed to lead to a marketing application for Bronchitol in adults and children with cystic fibrosis is due to report preliminary data early in 2009.

Approximately 75,000 people in the major pharmaceutical markets are affected with cystic fibrosis and no products have been approved to improve lung hydration.

To find out more about Pharmaxis, go to http://www.pharmaxis.com.au .

About the Trial

The following information is provided in accord with the ASX and AusBiotech Code of Best Practice for Reporting by Biotechnology, Medical Device and other Life Sciences Companies.

Name of Trial DPM-CF-202 (a Phase II study with Bronchitol)

Blinding Status Open

Design Crossover, Dose response

Treatment Route Inhalation

Frequency Twice daily

Dose levels 400mg, 240 mg, 120 mg, 40 mg for 2 weeks,

1-2 weeks washout between doses

No of subjects PP population 38

Subject Selection diagnosis of cystic fibrosis (sweat test or

Criteria genotype), of either gender, aged 7 years or

more, baseline FEV1 of between 40%

and 80% of the predicted normal value or a

decline in FEV1 of 20% or more in the last 12

months for those >80% predicted

Study population Median age: 16 yrs, mean FEV1: 63% predicted

Trial Location Canada and Argentina

Commercial partners None

Primary end points:

Change in FEV1 8.6% increase (139 mls) on 400 mg Bronchitol.

-1.6% on 40 mg (p=0.0006). 4.6% on 240 mg,

3.7% on 120 mg

Change in FVC 7.9% increase in FVC on 400 mg vs -0.6% on 40 mg

(p=0.0004). 3.9% on 240 mg, 1.5% on 120 mg

Secondary end points:

Other lung function 11.9% increase in MMEF on 400 mg (vs -0.3% on 40

measures; mg, change did not reach significance)

CF Questionnaire Improved 6.3 points on 400 mg vs -0.2 on 40 mg

Safety/adverse events No serious adverse events on 400 mg Bronchitol

Forward-Looking Statements

The statements contained in this media release that are not purely historical are forward-looking statements within the meaning of Section 21E of the Securities Exchange Act of 1934, as amended. Forward-looking statements in this media release include statements regarding our expectations, beliefs, hopes, goals, intentions, initiatives or strategies, including statements regarding the potential for Aridol and/or Bronchitol. All forward-looking statements included in this media release are based upon information available to us as of the date hereof, and we assume no obligation to update any such forward-looking statement as a result of new information, future events or otherwise. We cannot guarantee that any product candidate will receive FDA or other regulatory approval or that we will seek any such approval. Factors that could cause or contribute to such differences include, but are not limited to, factors discussed in the "Risk Factors and Other Uncertainties" section of our Form 20-F lodged with the U.S. Securities and Exchange Commission.

CONTACT:

Alan Robertson

Chief Executive Officer

Tel: +61-2-9454-7200

Email: alan.robertson@pharmaxis.com.au

RELEASED THROUGH:

Australia:

Virginia Nicholls

Tel: +61-417-610-824

Email: virginia.nicholls@pharmaxis.com.au

United States:

Brandon Lewis, Trout Group

Tel: +1-646-378-2915

Email: blewis@troutgroup.com


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SOURCE Pharmaxis Ltd
Copyright©2008 PR Newswire.
All rights reserved

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