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Healthy MalesPhase 2Oral T7NCT00842751

Oral T7 Oral Testosterone in Man

A Phase 2 study testing First Intervention (7 days), First Washout (7 days) and Second Intervention (7 days) in people with Healthy Males and Male Contraceptive, run by University of Washington at 1 site in United States.

Completed

Finished. The study has ended and is not enrolling. Results may be posted on the official record.

Official record
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Trial summary

The purpose of this study is to test how the body absorbs and processes new forms of oral testosterone. Information gained during the study may help develop better forms of testosterone therapy in the future. Read more about this study

Who is it for?
Ages 18 to 50 years, men onlyHealthy volunteers can take part
Conditions the study is for
Healthy Males, Male Contraceptive
What is being tested?
First Intervention (7 days), First Washout (7 days) and Second Intervention (7 days)
Could I receive a placebo?
Yes, some participants may receive a placebo
How many people
11 participants
Where
1 siteUnited States
Study dates
Jul 2009to Dec 2009
Phase
Phase 2
Are there results?
Yes, posted in the registrySummary in the doctors' view

Key requirements

Who can take part, as listed by the sponsor. Only the study team can confirm whether you are eligible, so take this list to your doctor.

  • Ages 18 to 50 years
  • Men only
  • Healthy volunteers accepted
  • Adult

Who may be able to join

  • Males between 18 and 50 years of age
  • In good health based on normal screening evaluation (consisting of a medical history, physical exam normal serum chemistry, hematology, and baseline hormone levels.
  • Must agree to not participate in another research drug study
  • Must agree to not donate blood
  • Must be willing to comply with the study protocol and procedures

Who cannot join

  • Men in poor general health, with abnormal blood results (clinical laboratory tests or hormone values)
  • A known history of alcohol or drug abuse
  • Participation in a long-term male contraceptive study within the past month
  • History of bleeding disorders or current use of anti-coagulants
  • History of sleep apnea
  • History of major psychiatric disorder
Show all 10Show fewer
  • Body mass index > 37
  • Infertility
  • Hematocrit > 55 or < 30
  • PSA >4

Trial locations and contacts

1 site in 1 country.

United States1 site
  • University of Washington

    Seattle, Washington, 98195

Other trials in United States

About this study

Official title: Pharmacokinetics of a Novel Oral Testosterone Undecanoate Formulation With Concomitant Inhibition of 5alpha-Reductase by Finasteride

The purpose of this study is to test how the body absorbs and processes new forms of oral testosterone. Information gained during the study may help develop better forms of testosterone therapy in the future.

Read the detailed description

We will be using three drugs: The first, acyline, temporarily turns off the body's production of testosterone for about two weeks. Subjects will receive acyline as shots three times over a six-week drug administration period. During the time when the body's production of testosterone is turned off, we will give testosterone either by itself or with a medication called finasteride by mouth twice daily for one week to see how much is absorbed and present in the bloodstream after administration. Subjects will go through three one-week study drug exposure periods. During two of the three one-week study drug administration periods subjects will also take a second medication, finasteride, by mouth twice daily. On the last day of each one-week drug administration period, subjects will be admitted to the University of Washington General Clinical Research Center overnight for monitoring of your blood testosterone levels. There will be 3 overnight visits for this study. This study will allow us to determine the absorption of testosterone taken by mouth, and the relative impact of two different doses of oral finasteride on testosterone absorption.

Being tested
First Intervention (7 days), First Washout (7 days), Second Intervention (7 days), Third Intervention (7 days), Second wash-out period
Keywords
5α-reductase, androgen, dihydrotestosterone (DHT), drug delivery, oestradiol

What participants receive

What participants receive. In a randomised study each person is assigned to one group by chance.

  • First Intervention (7 days)Drug

    Also called propecia

    Acyline 300mcg/kg subcutaneous (days 1, 15 \& 29) + testosterone undecanoate 200 mg, twice daily orally + finasteride placebo

  • First Washout (7 days)Other

    Also called no active drugs

    Washout of 7 days between each of the 3 treatment arms

  • Second Intervention (7 days)Drug

    Also called propecia

    Acyline 300mcg/kg subcutaneous + testosterone undecanoate 200 mg, twice daily orally + finasteride 0.5mg twice daily, orally

  • Third Intervention (7 days)Drug

    Also called propecia

    Acyline 300mcg/kg subcutaneous + testosterone undecanoate 200 mg, twice daily orally + finasteride 1mg twice daily, orally

  • Second wash-out periodOther

    Also called no active drug

    Washout of 7 days between each of the 3 treatment arms

Study groups in NCT00842751
Study groupRoleWhat they receive
Testosterone Undecanoate + placebo finasteridePlacebo comparatorAcyline 300mcg/kg subcutaneous on days 1, 15 and 29 + Testosterone Undecanoate (TU)200mg twice daily, orally for 7 days + placebo finasteride twice daily, orally for 7 days during one of the three intervention periods (First Intervention, Second Intervention or Third Intervention)
Receives: Drug: First Intervention (7 days); Other: First Washout (7 days)
Testosterone Undecanoate + Finasteride 0.5mgExperimentalAcyline 300mcg/kg subcutaneous on days 1, 15 \& 29 + testosterone undecanoate 200mg, twice daily orally for 7 days + finasteride 0.5mg twice daily, orally for 7 days during one of the three intervention periods (First Intervention, Second Intervention or Third Intervention)
Receives: Drug: Second Intervention (7 days); Other: Second wash-out period
Testosterone Undecanoate + Finasteride 1mgExperimentalAcyline 300mcg/kg subcutaneous on days 1, 15 \& 29 + testosterone undecanoate 200mg, twice daily orally for 7 days + finasteride 1mg twice daily, orally for 7 days during one of the three intervention periods ((First Intervention, Second Intervention or Third Intervention)
Receives: Drug: Third Intervention (7 days)

What is being measured

The primary outcome is the main question the study is designed to answer.

  1. Maximum Testosterone Concentration

    Area under the curve of serum testosterone Pharmacokinetic measures time-weighted mean concentration calculated as area under the concentration curve (AUC) divided by time from initiation of dosing for the morning dose and corrected for differences in baseline hormone concentration.

    Measured: 0,1,2,4,8,and 12-hour post dose

  2. Serum Dihydrotestosterone Concentration

    Area under the curve of serum dihydrotestosterone

    Measured: 0,1,2,4,8,and 12-hour post dose

  3. Serum Estradiol Concentration

    Area under the curve of serum estradiol

    Measured: 0,1,2,4,8,and 12-hour post dose

Timeline

From the start of the study to its completion; the mark is today. Estimated dates are the sponsor’s plan.

  1. First posted12 Feb 2009 (estimated)
  2. Study startJul 2009
  3. Primary completionNov 2009
  4. Study completionDec 2009

Resources

More details

For doctors and researchers: how the study is designed, who runs it, and its registry IDs.

Study design
Study type
Interventional
Phase
Phase 2
Primary purpose
Treatment
Allocation
Randomised
Intervention model
Crossover
Masking
None (open label)
Enrolment
11 participants (actual)
IDs, dates and publications
ClinicalTrials.gov ID
NCT00842751
Sponsor's protocol ID
35724-W
Other IDs
1K23HD045386, 5U54HD042454
Acronym
Oral T7
Status last verified
Dec 2013
First submitted
10 Feb 2009
Last updated
13 Jan 2014
Data monitoring committee
Yes

Publications

  • Katznelson L, Finkelstein JS, Schoenfeld DA, Rosenthal DI, Anderson EJ, Klibanski A. Increase in bone density and lean body mass during testosterone administration in men with acquired hypogonadism. J Clin Endocrinol Metab. 1996 Dec;81(12):4358-65. doi: 10.1210/jcem.81.12.8954042.

    PubMed 8954042
  • Behre HM, Kliesch S, Leifke E, Link TM, Nieschlag E. Long-term effect of testosterone therapy on bone mineral density in hypogonadal men. J Clin Endocrinol Metab. 1997 Aug;82(8):2386-90. doi: 10.1210/jcem.82.8.4163.

    PubMed 9253305
  • Bhasin S, Bremner WJ. Clinical review 85: Emerging issues in androgen replacement therapy. J Clin Endocrinol Metab. 1997 Jan;82(1):3-8. doi: 10.1210/jcem.82.1.3640. No abstract available.

    PubMed 8989221
  • Wang C, Alexander G, Berman N, Salehian B, Davidson T, McDonald V, Steiner B, Hull L, Callegari C, Swerdloff RS. Testosterone replacement therapy improves mood in hypogonadal men--a clinical research center study. J Clin Endocrinol Metab. 1996 Oct;81(10):3578-83. doi: 10.1210/jcem.81.10.8855804.

    PubMed 8855804
  • Snyder PJ, Peachey H, Berlin JA, Hannoush P, Haddad G, Dlewati A, Santanna J, Loh L, Lenrow DA, Holmes JH, Kapoor SC, Atkinson LE, Strom BL. Effects of testosterone replacement in hypogonadal men. J Clin Endocrinol Metab. 2000 Aug;85(8):2670-7. doi: 10.1210/jcem.85.8.6731.

    PubMed 10946864
  • Kelch RP, Jenner MR, Weinstein R, Kaplan SL, Grumbach MM. Estradiol and testosterone secretion by human, simian, and canine testes, in males with hypogonadism and in male pseudohermaphrodites with the feminizing testes syndrome. J Clin Invest. 1972 Apr;51(4):824-30. doi: 10.1172/JCI106877.

    PubMed 4259253
  • Weinstein RL, Kelch RP, Jenner MR, Kaplan SL, Grumbach MM. Secretion of unconjugated androgens and estrogens by the normal and abnormal human testis before and after human chorionic gonadotropin. J Clin Invest. 1974 Jan;53(1):1-6. doi: 10.1172/JCI107526.

    PubMed 4271572
  • Bagatell CJ, Bremner WJ. Androgens in men--uses and abuses. N Engl J Med. 1996 Mar 14;334(11):707-14. doi: 10.1056/NEJM199603143341107. No abstract available.

    PubMed 8594431
  • Fossa SD, Opjordsmoen S, Haug E. Androgen replacement and quality of life in patients treated for bilateral testicular cancer. Eur J Cancer. 1999 Aug;35(8):1220-5. doi: 10.1016/s0959-8049(99)00123-9.

    PubMed 10615233
  • Amory JK, Matsumoto AM. The therapeutic potential of testosterone patches. Expert Opin Investig Drugs. 1998 Dec;7(12):1977-85. doi: 10.1517/13543784.7.12.1977.

    PubMed 15991940
  • Swerdloff RS, Wang C, Cunningham G, Dobs A, Iranmanesh A, Matsumoto AM, Snyder PJ, Weber T, Longstreth J, Berman N. Long-term pharmacokinetics of transdermal testosterone gel in hypogonadal men. J Clin Endocrinol Metab. 2000 Dec;85(12):4500-10. doi: 10.1210/jcem.85.12.7045.

    PubMed 11134099
  • Nieschlag E, Mauss J, Coert A, Kicovic P. Plasma androgen levels in men after oral administration of testosterone or testosterone undecanoate. Acta Endocrinol (Copenh). 1975 Jun;79(2):366-74. doi: 10.1530/acta.0.0790366.

    PubMed 1173495
  • Johnsen SG, Bennett EP, Jensen VG. Therapeutic effectiveness of oral testosterone. Lancet. 1974 Dec 21;2(7895):1473-5. doi: 10.1016/s0140-6736(74)90216-5. No abstract available.

    PubMed 4140393
  • Daggett PR, Wheeler MJ, Nabarro JD. Oral testosterone, a reappraisal. Horm Res. 1978;9(3):121-9. doi: 10.1159/000178904.

    PubMed 640576
  • 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.

    PubMed 15713724

Questions about this trial

What is this clinical trial studying?

A Phase 2 study testing First Intervention (7 days), First Washout (7 days) and Second Intervention (7 days) in people with Healthy Males and Male Contraceptive, run by University of Washington at 1 site in United States.

The full registered description is in the About this study section and the official record.

Who may be eligible to take part?

The sponsor lists 5 inclusion and 10 exclusion criteria. Eligibility is decided by the study team after screening, so read the full criteria and contact a listed site.

Is this clinical trial currently recruiting?

The record says: finished, as of the sponsor's last update on 13 Jan 2014. Status can change between updates, so confirm with the study contact before making plans.

Where is the study taking place?

The record lists 1 site in United States. Whether a site is taking part right now should be confirmed with that site. See every site.

What are the possible benefits and risks?

They depend on the study and the treatment, and no study can promise a benefit. Some participants in this study may receive a placebo. The study team explains the known risks during informed consent, before anyone joins; the record itself does not list them.

What does this phase mean?

Phase 2 studies give the treatment to a larger group to see whether it has the intended effect and to keep checking safety.

Not every study follows the same path, and some studies (observational studies, device studies) have no phase.

Are results available for this study?

Yes. Results are posted in the registry (first posted 13 Jan 2014). A summary is in the For doctors view, and the full results are on ClinicalTrials.gov.

How can a doctor refer a patient or contact the research team?

The record lists no contact. The official record names the sponsor, who can be asked directly. AzTrials does not enrol participants or take referrals.

What does the primary outcome measure?

Maximum Testosterone Concentration (time frame: 0,1,2,4,8,and 12-hour post dose). The study lists 3 primary outcomes in all. It is what the study was designed to measure, not a finding.

Where can I read the original study information?

On the ClinicalTrials.gov record for NCT00842751, which also lists 20 linked publications.

Does a listing mean the treatment is approved or proven to work?

No. A listing means the study is registered. It does not show that the treatment is safe, works, or is approved by a regulator.

How often is this information updated?

AzTrials copies changed records from ClinicalTrials.gov every night and reloads the whole registry every week. The sponsor last updated this record on 13 Jan 2014.

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