An Efficacy and Safety Study With Licroca Depot, a Controlled Release Product, Injected Into the Prostate (2-HOF)

Men, 45 years of age or older, with localized prostate cancer will be injected once with a ready made paste including 600 mg 2-hydroxyflutamide (Liproca Depot) into the site of the prostate where the tumour is localized. The patient will be monitored for prostate-specific antigen (PSA) for maximum 6 months or to progression within this time period. Patients that progress within 3-6 months after the injection will be offered a second injection.

Inclusion Criteria:

1. Age ≥ 45years
2. Histologically confirmed localized prostate cancer (T1-T2), predominantly in one side of the peripheral zone, verified by biopsy.
3. PSA value < 20 ng/ml within 6 weeks before enrolment.
4. Gleason score ≤ 3+4 at diagnostic biopsy
5. Adequate renal function: Creatinine < 1.5 times upper limit of normal.
6. Adequate hepatic function: ASAT, ALAT and ALP < 1.5 times upper limit of normal.
7. Negative dipstick for bacturia.
8. Patient must have ability to cope with the study procedures and to return to scheduled visits including follow up visit.

Exclusion Criteria:

1. Previous or ongoing hormone therapy for prostate cancer.
2. Ongoing or previous therapy (within3 month) of finasteride or dutasteride.
3. Ongoing or previous invasive therapy for benign prostate hyperplasia (TURP, TUMT).
4. Symptoms or signs of acute prostatitis.
5. Symptoms or signs of ulceric proctitis
6. Severe micturation symptoms (I-PSS >17)
7. Concomitant systemic treatment with corticosteroids, or immunomodulating agents.
8. Known immunosuppressive disease (e.g. HIV, insulin dependent diabetes).
9. Simultaneous participation in any other study involving not market authorized drugs or having participated in a study within the last 12 months prior to start of study treatment.