Spots Global Cancer Trial Database for Zometa on Bone Mineral Density in Prostate Cancer Patients Undergoing Androgen Ablation Therapy

Study Description

Brief Summary: The purpose of this research is to determine the effect of timing of Zometa® administration on bone mineral density of the lumbar spine and femoral neck in men undergoing androgen deprivation therapy for prostate adenocarcinoma. In addition, the researchers will also determine the effects of treatment with Zometa® on peripheral blood markers of bone turnover, on peripheral blood gd T-cell frequencies and function, and to determine if the above treatments elicit prostate antigen-specific IgG immune responses. The effects of the above treatments on serial serum PSA measurements will also be examined.

Detailed Description: Castration by GnRH agonist therapy with or without androgen antagonists has been a mainstay for advanced prostate cancer. One of the most significant side effects of the use of androgen ablative therapies has been a decrease in bone mineral density, potentially placing patients at greater risk of osteoporosis and bone fractures. It is prudent to anticipate this adverse effect of therapy and to minimize its severity with appropriate and timely pharmacologic intervention. Zometa is a bisphosphonates and bisphosphonates are effective inhibitors of osteoclastic bone resorption. Recent studies have shown that other bisphosphonates were able to reduce the bone loss observed after 24 and 48 weeks of treatment with a GnRH analogue. An unanswered question remains, however, in how frequently these agents should be employed in clinical practice. This is a three-arm randomized trial of Zometa® on bone mineral density in subjects with stage D prostate cancer undergoing androgen ablation therapy. If subjects are enrolled in Arm 1, the GnRH analogue would be administered every 3 months for 1 year. Four milligrams of Zometa® would be administered IV over 15 minutes 7 days prior to beginning androgen deprivation therapy. If subjects are enrolled in Arm 2, the GnRH analogue would be administered every 3 months for one year, and 4 mg of Zometa® would be administered IV over 15 minutes at month 6. If subjects are enrolled in Arm 3, the GnRH analogue is administered every 3 months for 1 year, with 4 mg of Zometa® administered IV over 15 minutes monthly for 6 months, beginning at month 6.

Keywords

Eligibility

Minimum Age: 18 Years

Eligible Ages: ADULT, OLDER_ADULT

Sex: MALE

Healthy Volunteers: No

Locations

Contact Details

Useful links and downloads for this trial