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Debiopharm Group(TM) – First Patient Treated in Phase III Study With Subcutaneous Administration of Debio 8206 for Treatment of Advanced Prostate Cancer

July 23, 2012

LAUSANNE, Switzerland, July 24, 2012 /PRNewswire/ –

Debiopharm Group(TM) (Debiopharm), a Swiss-based global biopharmaceutical group of
companies with a focus on the development of prescription drugs that target unmet medical
needs and companion diagnostics, today announced the treatment of its first patient in a
multicentre, open, non-comparative Phase III study to investigate the efficacy, safety,
and pharmacokinetics of two subcutaneous (SC) injections of Debio 8206 (triptorelin
pamoate 22.5 mg 6-month formulation) in patients with advanced prostate cancer.

The study will be conducted in the Republic of South Africa and will involve 120
patients suffering mainly from advanced prostate cancer. Patients with recurrent lower
stage prostate cancer and rising prostate specific antigen (PSA) following local therapy
failure who are candidates for androgen deprivation therapy will also take part.

The 6-month formulation is currently commercialised for an administration by the
intramuscular (IM) route in several countries.

“We believe that the SC route of administration of Debio 8206 will prove very
convenient, in prostate cancer patients also suffering from concomitant diseases requiring
anticoagulation treatments. In these patients SC administration is often preferred due to
a potential risk of haematomas at the injection site after intramuscular injection,” said
Rolland-Yves Mauvernay, President and founder of Debiopharm.

Patient evaluation will be primarily based on the efficacy in achieving castrate
levels of testosterone (< 1.735 nmol/L [50 ng/dL]) 28 days after the first injection of
Debio 8206 and in maintaining castrate levels of testosterone from Day 57 to Day 337. The
safety profile will also be evaluated. Additional efficacy measures will include the
assessment of the percentage of patients who show an increase in testosterone levels 48
hours after the second injection of Debio 8206, as well as the absence of gonadotropin
(LH) stimulation 2 hours after the second injection of Debio 8206 and the change in PSA
from baseline to study end. In addition, Debio 8206 pharmacokinetics and testosterone
pharmacodynamics will be assessed in a subset of 15 patients.

About Triptorelin

Triptorelin is a synthetic decapeptide agonist analogue of GnRH that was first
registered in France in 1986 and is currently marketed in more than 80 countries in
various indications including advanced prostate cancer. Chronic administration of
triptorelin causes down regulation of the pituitary GnRH receptors and suppresses
gonadotropin (LH and FSH) secretion and finally the release of gonadal sex hormones.
Triptorelin shows a safety profile similar to other GnRH agonists. Except for injection
site reactions or rare immunoallergic reactions, the side effects of triptorelin are
mostly due to the initial increase in testosterone (temporary worsening of the symptoms
including bone pain within the first days of treatment) followed by almost complete
suppression of testosterone (e.g. hot flushes and headaches).

About Debiopharm Group(TM)

Debiopharm Group(TM) (Debiopharm) is a Swiss-based global biopharmaceutical group of
companies with a focus on the development of prescription drugs that target unmet medical
needs. The group in-licenses, develops and/or co-develops promising biological and small
molecule drug candidates having reached clinical development phases I, II or III, as well
as earlier stage candidates. It develops its products for global registration and maximum
commercial potential. The products are out-licensed to pharmaceutical partners for sales
and marketing. Debiopharm is also active in the field of companion diagnostics with a view
to progressing in the area of personalised medicine. Debiopharm independently funds the
worldwide development of all of its products while providing expertise in pre-clinical and
clinical trials, manufacturing, drug delivery and formulation, and regulatory affairs.

For more information on Debiopharm Group(TM), please visit:

http://www.debiopharm.com.

        Debiopharm S.A. Contact
        Maurice Wagner
        Director Corporate Affairs & communication
        Tel.: +41(0)21-321-01-11
        Fax: +41(0)21-321-01-69
        mwagner@debiopharm.com

        Additional Media Contacts
        In London
        Maitland
        Brian Hudspith
        Tel: +44(0)20-7379-5151
        bhudspith@maitland.co.uk

        In New York
        Russo Partners, LLC
        Martina Schwarzkopf, Ph.D.
        Account Executive
        Tel: +1-212-845-4292
        Fax: +1-212-845-4260
        martina.schwarzkopf@russopartnersllc.com

SOURCE Debiopharm Group


Source: PR Newswire