Inclusion Criteria:

- 20 years or older

- Has a histological confirmed prostate cancer

- Has a screening serum testosterone above 1.5 ng/mL

- Has a Eastern Cooperative Oncology Group (ECOG) score of ≤ 2

- Has a life expectancy of at least 168 days

Exclusion Criteria:

- Current or previous hormone therapy

- Is currently treated with 5-α-reductase inhibitor

- Has a history of severe untreated asthma, anaphylactic reactions, or severe urticaria
and/or angioedema

- Is considered to be a candidate for curative therapy, i.e radical prostatectomy or
radiotherapy

- Has had cancer within the last five years except prostate cancer and surgically
removed basal or squamous cell carcinoma of the skin.

- Has a clinically significant disorder (other than prostate cancer) or any other
condition , including alcohol or drug abuse, which may interfere with trial
participation or which may affect the conclusion of the trial as judged by the
investigator

- Has received an investigational drug within the last 28 days preceding Screening
Visit or longer if considered to possibly influence the outcome of the current trial