Combination of somatostatin analog, dexamethasone, and standard androgen ablation therapy in stage D3 prostate cancer patients with bone metastases

Clinical Cancer Research : an Official Journal of the American Association for Cancer Research
M KoutsilierisAthanassios Tsintavis

Abstract

Androgen ablation-refractory prostate cancer patients (stage D3) develop painful bone metastases and limited responsiveness to conventional therapies, hence the lack of universally accepted "gold standard" treatment for this poor prognosis clinical setting. We tested the safety and efficacy in stage D3 patients of the combination hormonal therapy, which combines administration of somatostatin analog and dexamethasone with standard androgen ablation monotherapy (luteinizing-hormone releasing-hormone analog or orchiectomy). Thirty eight patients with stage D3 prostate cancer (mean age 71.8 +/- 5.9 years) continued receiving androgen ablation therapy in combination with oral dexamethasone (4 mg daily for the 1st month of treatment, tapered down to 1 mg daily by the 4th month, with 1 mg daily maintenance dose thereafter) and somatostatin analog (20 mg octreotide i.m. injections every 28 days). Twenty-three of 38 patients (60.5%) receiving this combination regimen had partial responses [PR, >/=50% prostate-specific antigen (PSA) decline], 9 (21.1%) had stable disease, and 7 (18.4%) had progressive disease. In 47.7% (18 of 38) of patients, their serum PSA levels decreased with treatment but did not return to their respective baseline...Continue Reading

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