[Treatment for hormone-refractory or relapsing prostatic cancer].
Androgen ablative treatments for advanced prostatic cancer have achieved great progress with new concepts of therapy in the last decade such as chemical castration with LH-RH analogue and total androgen ablation. However, in treatment for hormone-refractory or relapsing prostatic cancer it remains controversial whether cytotoxic chemotherapy is acceptable or palliative, and whether there is an alternative treatment for this incurable disease. The current status of cytotoxic chemotherapy for advanced prostatic cancer patients in Nara Medical University since 1980 is reported in this paper with the some review of recent advances in hormone-independent prostatic cancer treatment. The overall objective response rate of CDDP-based multi-drug regimens including CDDP monotherapy was 49.6% (CR 0% + PR 49.6%). Response rate of primary chemotherapy group constituted with untreated patient was 67.2%, against 23.9% in the hormone refractory or relapse group. Five-year survival rate was 61.1% in the primary chemotherapy group, 35.5% in the hormone refractory group and 40.6% in the relapse group. Basically, there was no significant difference in response rates and survival rates among the groups of CDDP monotherapy, CDDP+bleomycin+vinblastine, CDDP+cyclophosphamide+adriamycin or CDDP+etoposide. The different response rates among the regimens seemed mainly to depend on the population of refractory or relapsing cases in each group. The important problems remaining unsolved in the research of chemotherapy for prostatic cancer are that there is no effective breakthrough agent and the lack of the harmonization in response criteria. The new agents are under development based on the cellular biology of hormone-refractory prostatic cancer, and there is a bright future in the treatment of this intractable disease.
Hirao
Y
Y
Department of Urology, Nara Medical University, Japan.
Ozono
S
S
Okajima
E
E
D000368:Aged; D000369:Aged, 80 and over; D000971:Antineoplastic Combined Chemotherapy Protocols / Q000627:therapeutic use*; D001761:Bleomycin / Q000008:administration & dosage; D002945:Cisplatin / Q000008:administration & dosage*; D002986:Clinical Trials as Topic; D003520:Cyclophosphamide / Q000008:administration & dosage; D004317:Doxorubicin / Q000008:administration & dosage; D005047:Etoposide / Q000008:administration & dosage; D006801:Humans; D008297:Male; D008875:Middle Aged; D009364:Neoplasm Recurrence, Local / Q000188:drug therapy; D011471:Prostatic Neoplasms / Q000188:drug therapy* / Q000401:mortality; D015996:Survival Rate; D014747:Vinblastine / Q000008:administration & dosage
D001761:Bleomycin; D014747:Vinblastine; D005047:Etoposide; D004317:Doxorubicin; D003520:Cyclophosphamide; D002945:Cisplatin