- ICH GCP
- US Clinical Trials Registry
- Clinical Trial NCT00471185
ACY-6 Oral Administration of Acyline (ACY-6)
Oral Administration of the GnRH Antagonist Acyline in Normal Men
In this study, we propose oral dosing of GIPET enhanced oral acyline (MER-104) to determine if this potentially useful compound is safe and effective at suppression of gonadotropins after oral dosing in man.
Hypothesis: A single dose of Acyline will suppress gonadotropins, and testosterone, estradiol and dihydrotestosterone (DHT) for 24 hours in man, and the magnitude and duration of the suppression will increase with increasing doses of Acyline.
Study Overview
Detailed Description
The purpose of this study is to test how the body responds to a new oral form of acyline and to also look at the safety of oral acyline.
Acyline temporarily blocks the production of the hormone testosterone in normal men. It has been given to over 100 men in an injection form. This study will be testing acyline in a pill form. This is the first time the pill form has been tested in humans.
This study may help develop an oral form of a testosterone-blocker, which may be useful in the treatment of diseases such as prostate cancer, premature puberty and possibly in a male contraceptive.
This study requires three 12-hour blood draw periods for pharmacokinetics (PK) testing. PK testing looks to see how much study drug is in the blood. This gives information about how the body handles and gets rid of the study drug.
Study Type
Enrollment (Actual)
Phase
- Phase 1
Contacts and Locations
Study Locations
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Washington
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Seattle, Washington, United States, 98195
- University of Washington
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Participation Criteria
Eligibility Criteria
Ages Eligible for Study
Accepts Healthy Volunteers
Genders Eligible for Study
Description
Inclusion Criteria:
- Males between 18-50 years of Age in good health
Exclusion Criteria:
- Men in poor health, significant chronic or acute medical illness, known history of alcohol, illicit drug or anabolic steroid abuse
Study Plan
How is the study designed?
Design Details
- Primary Purpose: Treatment
- Allocation: Non-Randomized
- Interventional Model: Parallel Assignment
- Masking: None (Open Label)
Arms and Interventions
Participant Group / Arm |
Intervention / Treatment |
|---|---|
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Experimental: A
Subjects will receive progressively increasing doses of 10, 20 and 40 mg of oral acyline, on 3 occasions, each separated by 1 week
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10, 20 and 40 mg of Oral acyline, given on 3 occasions, separated by 1 week.
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What is the study measuring?
Primary Outcome Measures
Outcome Measure |
Time Frame |
|---|---|
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To evaluate the suppressive effects of GIPET-enhanced oral Acyline on pituitary gonadotropin and testosterone secretion in normal men and to assess any potential side effects of GIPET enhanced oral Acyline
Time Frame: 28-days
|
28-days
|
Secondary Outcome Measures
Outcome Measure |
Time Frame |
|---|---|
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To define the pharmacokinetics of GIPET enhanced oral Acyline
Time Frame: 28-days
|
28-days
|
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Assess any potential side effects of GIPET enhanced oral Acyline
Time Frame: 28-days
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28-days
|
Collaborators and Investigators
Sponsor
Collaborators
Investigators
- Principal Investigator: John K Amory, University of Washington
Publications and helpful links
General Publications
- Amory JK, Bremner WJ. Oral testosterone in oil plus dutasteride in men: a pharmacokinetic study. J Clin Endocrinol Metab. 2005 May;90(5):2610-7. doi: 10.1210/jc.2004-1221. Epub 2005 Feb 15.
- Amory JK, Page ST, Bremner WJ. Oral testosterone in oil: pharmacokinetic effects of 5alpha reduction by finasteride or dutasteride and food intake in men. J Androl. 2006 Jan-Feb;27(1):72-8. doi: 10.2164/jandrol.05058.
- Herbst KL, Coviello AD, Page S, Amory JK, Anawalt BD, Bremner WJ. A single dose of the potent gonadotropin-releasing hormone antagonist acyline suppresses gonadotropins and testosterone for 2 weeks in healthy young men. J Clin Endocrinol Metab. 2004 Dec;89(12):5959-65. doi: 10.1210/jc.2003-032123.
- Snyder CN, Clark RV, Caricofe RB, Bush MA, Roth MY, Page ST, Bremner WJ, Amory JK. Pharmacokinetics of 2 novel formulations of modified-release oral testosterone alone and with finasteride in normal men with experimental hypogonadism. J Androl. 2010 Nov-Dec;31(6):527-35. doi: 10.2164/jandrol.109.009746. Epub 2010 Apr 8.
- Page ST, Lin DW, Mostaghel EA, Hess DL, True LD, Amory JK, Nelson PS, Matsumoto AM, Bremner WJ. Persistent intraprostatic androgen concentrations after medical castration in healthy men. J Clin Endocrinol Metab. 2006 Oct;91(10):3850-6. doi: 10.1210/jc.2006-0968. Epub 2006 Aug 1.
- Herbst KL, Anawalt BD, Amory JK, Bremner WJ. Acyline: the first study in humans of a potent, new gonadotropin-releasing hormone antagonist. J Clin Endocrinol Metab. 2002 Jul;87(7):3215-20. doi: 10.1210/jcem.87.7.8675.
- Page ST, Amory JK, Anawalt BD, Irwig MS, Brockenbrough AT, Matsumoto AM, Bremner WJ. Testosterone gel combined with depomedroxyprogesterone acetate is an effective male hormonal contraceptive regimen and is not enhanced by the addition of a GnRH antagonist. J Clin Endocrinol Metab. 2006 Nov;91(11):4374-80. doi: 10.1210/jc.2006-1411. Epub 2006 Aug 29.
- Matthiesson KL, Amory JK, Berger R, Ugoni A, McLachlan RI, Bremner WJ. Novel male hormonal contraceptive combinations: the hormonal and spermatogenic effects of testosterone and levonorgestrel combined with a 5alpha-reductase inhibitor or gonadotropin-releasing hormone antagonist. J Clin Endocrinol Metab. 2005 Jan;90(1):91-7. doi: 10.1210/jc.2004-1228. Epub 2004 Oct 27.
Helpful Links
Study record dates
Study Major Dates
Study Start
Primary Completion (Actual)
Study Completion (Actual)
Study Registration Dates
First Submitted
First Submitted That Met QC Criteria
First Posted (Estimate)
Study Record Updates
Last Update Posted (Estimate)
Last Update Submitted That Met QC Criteria
Last Verified
More Information
Terms related to this study
Keywords
Additional Relevant MeSH Terms
Other Study ID Numbers
- 31511-W
- 07-4947-W 02 (Other Identifier: UW Human Subjects Division)
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