Abstract | PURPOSE: Symptomatic, hormone refractory prostate cancer (HRCAP) is a major cause of morbidity with a median survival of less than 12 months and a 2-year survival of only up to 10% in most series. Mitoxantrone has been approved by the Food and Drug Administration for HRCAP. Preliminary data suggest that DPPE (N,N-diethyl-2-[4-(phenylmethyl) phenoxy]-ethanamine) or tesmilifene modulates cytotoxics to enhance the anticancer effect. In this phase II trial we assessed whether there is sufficient evidence of enhanced efficacy of DPPE and mitoxantrone to lead to a phase III clinical trial. MATERIALS AND METHODS: A total of 29 patients with a median age of 73 years, of whom 10% were older than 80 years, with progressive HRCAP received 5.3 mg/kg DPPE intravenously every 3 weeks, 12 mg/m mitoxantrone intravenously every weeks and 5 mg prednisone orally twice daily. All patients had pain at presentation, while 97% had bone metastases, 10% had liver metastases and 17% had lung metastases. Median prostate specific antigen (PSA) was 210 ng/ml (IQR 77 to 430). RESULTS: Of the patients 75% had some pain improvement, 66% had decreased analgesia, 59% had a PSA decrease of 50% or greater and 45% had a PSA decrease of 75% or greater. Actual (not actuarial) 2-year survival was 21%. CONCLUSIONS: Despite major limitations of historical comparison the PSA decrease and decreased symptoms with DPPE- mitoxantrone- prednisone compare favorably to those of mitoxantrone- prednisone and docetaxel- estramustine in the literature. The 2-year survival rate of 21% mandates further assessment. This will be tested in a phase III Southwest Oncology Group trial.
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Authors | D Raghavan, L J Brandes, K Klapp, T Snyder, E Styles, D Tsao-Wei, G Lieskovsky, D I Quinn, E W Ramsey |
Journal | The Journal of urology
(J Urol)
Vol. 174
Issue 5
Pg. 1808-13; discussion 1813
(Nov 2005)
ISSN: 0022-5347 [Print] United States |
PMID | 16217292
(Publication Type: Clinical Trial, Clinical Trial, Phase II, Journal Article, Research Support, Non-U.S. Gov't)
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Chemical References |
- Phosphatidylethanolamines
- 1,2-dipalmitoyl-3-phosphatidylethanolamine
- Mitoxantrone
- Prostate-Specific Antigen
- Prednisone
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Topics |
- Adenocarcinoma
(drug therapy, mortality, pathology, secondary)
- Aged
- Aged, 80 and over
- Antineoplastic Combined Chemotherapy Protocols
(adverse effects, therapeutic use)
- Dose-Response Relationship, Drug
- Drug Administration Schedule
- Humans
- Male
- Maximum Tolerated Dose
- Middle Aged
- Mitoxantrone
(administration & dosage)
- Neoplasm Staging
- Phosphatidylethanolamines
(administration & dosage)
- Prednisone
(administration & dosage)
- Prognosis
- Prostate-Specific Antigen
(blood)
- Prostatic Neoplasms
(diagnosis, drug therapy, mortality)
- Survival Analysis
- Treatment Outcome
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