Efficacy Study for Use of Dutasteride (Avodart) With Testosterone Replacement
キーワード
概要
説明
Termination criteria
1. Serum AST or ALT > 3 times ULN
2. Total serum bilirubin > 1.5 times ULN
- no study termination of a patient with documented Gilberts disease for an isolated bilirubin elevation unless it exceeds 2.5x the upper limit of normal.
3. Hematocrit > 55%
4. Subject experiences any unacceptable or intolerable adverse effect.
5. Subject is non-compliant with the study protocol.
6. Subject needs to take any medication that would interfere with study measurements
7. Subject develops prostate or breast cancer
日付
最終確認済み: | 01/31/2013 |
最初に提出された: | 09/14/2008 |
提出された推定登録数: | 09/14/2008 |
最初の投稿: | 09/15/2008 |
最終更新が送信されました: | 02/24/2013 |
最終更新日: | 02/25/2013 |
実際の研究開始日: | 08/31/2008 |
一次完了予定日: | 02/29/2012 |
研究完了予定日: | 02/29/2012 |
状態または病気
介入/治療
Drug: A
Drug: B
段階
アームグループ
腕 | 介入/治療 |
---|---|
Placebo Comparator: B This group will meet the same inclusion and exclusion criteria as the group receiving the study drug | Drug: B one tablet per day for 1 year |
Active Comparator: A This arm will receive the active medication dutasteride | Drug: A 0.5mg by mouth one time per day for 1 year |
適格基準
研究の対象となる年齢 | 40 Years に 40 Years |
研究に適格な性別 | Male |
健康なボランティアを受け入れる | はい |
基準 | Inclusion Criteria: 1. Subjects currently on stable testosterone replacement therapy for 3 months' duration using either the approved transdermal products Androgel® or Testim®, or injections of testosterone enanthate or cypionate with a morning serum testosterone concentration within the normal range (300 - 1000 ng/dl). These will dispensed either by prescription or for injections by the PI or co-PI in the office. 2. Total Serum PSA >1.5 - 10 ng/mL - If the total serum PSA is >4ng/mL, the investigator, or a qualified urologist, will perform a 12-core prostate biopsy prior to entry unless such a biopsy has already been performed within the past 6 months. - If the PSA rises above 4 during any time of the study, the patient will be referred to urology for biopsy. - Patients with any suspicious rise in PSA of >1.0 ng/ml/yr will have a repeat PSA performed within one month of the original value. If the rise in PSA remains >1.0 ng/ml/yr, the patient will undergo a prostate biopsy. - b. If the individual has had a negative biopsy more than 6 months previously, with documentation of stable PSA since that time, ie, no sustained increase >1.0ng/ml. 3. Subject is able to read and comprehend the informed consent document. 4. If the subject is on current replacement therapy for hypopituitarism or other multiple endocrine abnormalities, the subject must be on stable doses of thyroid hormone and/or adrenal replacement hormones for at least 14 days prior to enrollment. Exclusion Criteria: 1. Use of medications including those interactive with dutasteride from prior studies 2. Hematocrit greater than 51% 3. Prostate cancer in men found to have a prostate nodule on initial exam and subsequent positive biopsy 4. No prostate surgery within 2 months of entry 5. No prior use of finasteride, dutasteride within 6 months prior 6. A history of hepatic impairment or abnormal liver function tests (defined as ALT, AST, alkaline phosphatase or bilirubin >1.5 times the upper limit of normal) with the exception that bilirubin elevations up to 2.0 times the upper limit of normal in the presence of normal liver enzymes will be permitted in patients with documented Gilbert's Disease. Subjects with Gilbert's disease not to be excluded. 7. No serum creatinine greater than 2.0 times upper limit of normal 8. No history of alcohol abuse with last 12 months 9. Has received any medication in a clinical trial within 2 months of enrollment 10. Use of anti-androgens, estrogens or coumadin 11. A history or evidence of newly discovered prostate cancer (e.g. positive biopsy or ultrasound, suspicious DRE). In patients with suspicious ultrasound or DRE, including patients with a focal nodule, biopsy shall be performed by a qualified urologist upon study entry unless one was performed and found to be negative within the preceding 6 months. 12. History of or current prostate or breast cancer 13. Baseline EKG with clinically significant abnormal rhythm or abnormal QT interval 14. Systolic blood pressure above 170mmHg or diastolic blood pressure above 90 mm Hg on baseline physical exam 15. Clinically significant peripheral edema on baseline physical exam 16. History of sleep apnea 17. History of psychiatric disorders or major depression 18. Consumption of grapefruit juice within 7 days of enrollment or is unwilling to eliminate use of grapefruit juice during the study period 19. History of allergy to study medication 20. Hemoglobin A1c > 9% in a non-insulin dependent diabetic 21. Subjects with abnormal thyroid function 22. Subjects with significantly elevated triglycerides |
結果
主な結果の測定
1. PSA reduction [with up to 12 months of treatment]
二次的な結果の測定
1. PV reduction with up to 12 months of treatment [1 year treatment]
2. DHT and T levels: serum [1 year treatment]
3. Prostatic TRUS pre and post treatment [1 year treatment]
4. IIEF; MHSQ: Questionnaires examining the domains of erectile and orgasmic function in men in the two treatment arms [1 year treatment]