This trial is an open-label, multi-centre, single arm extension for the 000006 trial in Chinese patients with prostate cancer. Eligible patients will receive monthly (28-day intervals) maintenance doses of 80 mg (20 mg/mL) degarelix administered by subcutaneous (s.c.) injection for a period of 2 years from first visit in this extension trial. Patients, who received goserelin treatment in the main trial, will get a degarelix starting dose (240 mg; 40 mg/mL) at the first visit and continue on degarelix treatment. The purpose of this 2-year extension trial is to collect long-term safety and tolerability data for the one-month dosing regimen.