To evaluate the difference in percentages of patients with PSA progression treated with either bicalutamide 150 mg/day in monotherapy or bicalutamide 150 mg/day + dutasteride 0.5 mg/day after 3 years of follow-up in patients with locally advanced or…
ID
Bron
Verkorte titel
Aandoening
Locally advanced or metastatic carcinoma of the prostate.
Ondersteuning
(Foundation for the stimulation of Scientific Urological Research.)
Onderzoeksproduct en/of interventie
Uitkomstmaten
Primaire uitkomstmaten
PSA progression after 3 years of study treatment
Achtergrond van het onderzoek
Patients will be randomised for treatment with either:
1. Antiandrogen monotherapy: bicalutamide 150 mg taken orally, three tablets of 50 mg bicalutamide daily without interruption or
2. Bicalutamide 150 mg taken orally, three tablets of 50 mg bicalutamide daily plusDutasteride 0.5 mg, 1 capsule, once daily.
It is reasonable to consider that the combination of the 5-alpha-reductase inhibitor, dutasteride, and a pure antiandrogen such as bicalutamide should provide an effective form of maximal androgen blockade (MAB). Dutasteride decreases intraprostatic levels of 5-alpha dihydrotestosterone (DHT), and the antiandrogen would restrain the biological action of the residual DHT by interfering with its association with androgen receptor. This form of MAB should sustain the concentration of testosterone in plasma, thereby maintaining sexual function and reasonable quality of life. In earlier studies with locally advanced prostate cancer patients, finasteride provided additional intraprostatic androgen blockade to flutamide, as measured by additional PSA suppression and a median protocol treatment failure-free survival of 29,9 months, a median castration-free survival of 37 months and an overall survival of 65 % after 5 years. With bicalutamide 150 mg therapy PSA progression is expected in 17-20 % of the patients with locally advanced prostate cancer with 3-4 years of follow up. With the combination finasteride and flutamide therapy PSA progression is expected in 40 % of the patients with locally advanced or M1 prostate cancer with 3 years of follow up.
In order to investigate if the combination of dutasteride and bicalutamide is more effective than bicalutamide therapy alone, this randomized multicenter phase III clinical trial of patients with locally advanced or metastatic cancer of the prostate is proposed.
Doel van het onderzoek
To evaluate the difference in percentages of patients with PSA progression treated with either bicalutamide 150 mg/day in monotherapy or bicalutamide 150 mg/day + dutasteride 0.5 mg/day after 3 years of follow-up in patients with locally advanced or metastatic prostate cancer.
Onderzoeksproduct en/of interventie
Group 1 will be hormonally treated with bicalutamide 150 mg/day monotherapy.
Group 2 will be hormonally treated with bicalutamide 150 mg/day + 0.5 mg dutasteride/day
Publiek
P.O. Box 30016l
W.J. Bruijn, de
Arnhem 6803 AA
The Netherlands
+31 (0)26 389 0677
w.debruijn@curatrial.com
Wetenschappelijk
P.O. Box 30016l
W.J. Bruijn, de
Arnhem 6803 AA
The Netherlands
+31 (0)26 389 0677
w.debruijn@curatrial.com
Belangrijkste voorwaarden om deel te mogen nemen (Inclusiecriteria)
1. Patients aged 18 years and above
2. Patients with histologically proven prostate cancer.
3. Patients with locally advanced carcinoma of the prostate (T3-4, N0-x) or (T0-x, N1-3; N category should be confirmed histologically or cytologically) or metastatic carcinoma of the prostate (M1).
4. Patients with a high (> 10 ng/ml) PSA level at baseline.
5. Written informed consent to participate in the study.
6. Life expectancy is at least 12 months.
Belangrijkste redenen om niet deel te kunnen nemen (Exclusiecriteria)
1. Patients simultaneously participating in another study.
2. Previous or concurrent chemotherapy, 5-alpha reductase inhibitor therapy or hormonal therapy specifically for the treatment of prostate cancer other than temporary neo-adjuvant hormonal therapy administered longer than 1 year prior to study entry.
3. Development of another invasive neoplastic disease during the previous 5 years, or concomitant presence of another invasive neoplastic disease, except basal cell carcinoma or squamous cell carcinoma of the skin.
4. Patients with a history or presence of hepatic or renal disease or other condition known to interfere with metabolism or excretion of drugs.
5. Patients with a history of alcohol or drug abuse.
Opzet
Deelname
Opgevolgd door onderstaande (mogelijk meer actuele) registratie
Geen registraties gevonden.
Andere (mogelijk minder actuele) registraties in dit register
Geen registraties gevonden.
In overige registers
| Register | ID |
|---|---|
| NTR-new | NL752 |
| NTR-old | NTR763 |
| Ander register | : N/A |
| ISRCTN | ISRCTN47114653 |