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HypogonadismPhase 4TRADENCT00194675

TRADE-Testosterone Replacement and Dutasteride Effectiveness

A Phase 4 study testing Dutasteride and Testosterone gel in people with Hypogonadism and Benign Prostatic Hyperplasia, 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 research study is to determine whether the combination of the male hormone testosterone [T] in gel form and the oral drug dutasteride [D], used to shrink large prostate glands can safely reduce the size of the prostate gland and symptoms of prostate enlargement (called benign prostatic hyperplasia… Read more about this study

Who is it for?
Ages 50 years and older, men onlyHealthy volunteers can take part
Conditions the study is for
Hypogonadism, Benign Prostatic Hyperplasia
What is being tested?
Dutasteride and Testosterone gel
Type of treatment
Pill or oral medicine
Could I receive a placebo?
Yes, some participants may receive a placebo
How many people
53 participants
Where
1 siteUnited States
Study dates
Mar 2005to Dec 2010
Phase
Phase 4
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 50 years and older
  • Men only
  • Healthy volunteers accepted
  • Adult, Older adult

Who may be able to join

  • Generally healthy older men 50 years old or older
  • Hypogonadism; low testosterone (total T less than 280 ng/dL on one occasion or an average of equal to or less than 300 ng/dl on two occasions)
  • Prostate volume equal to or more than 30 cc by prostate MRI
  • Prostate Specific Antigen (PSA) equal to or more than 1.5 ng/mL and equal to or less than 10 ng/mL
  • Subjects with a PSA greater than 4.0 ng/ml must have a negative prostate biopsy
  • International Prostate Symptom Score (IPSS) greater than or equal to 8 and less than or equal to 20 at screening
Show all 9Show fewer
  • Comply with study procedures for the full 10 months
  • No contraindications to MRI
  • Subjects with symptomatic Benign Prostatic Hyperplasia (BPH) will be recruited from the Urology and General Internal Medicine Clinics at the VA Puget Sound Health Care System and University of Washington Medical Center in Seattle.

Who cannot join

  • A history of prostate or breast cancer
  • Invasive therapy for BPH in the past
  • History of acute urinary retention in the 3 months prior to screening
  • Previous treatment with a 5 alpha-reductase inhibitor (finasteride or dutasteride)
  • Medical therapy for BPH within the past month (alpha-blocker, phytotherapy)
  • Use of androgenic or antiandrogenic drugs in the past year
Show all 16Show fewer
  • History or evidence of prostate cancer including suspicious DRE or history of high-grade PIN on prostate biopsy.
  • Severe systemic illness (renal, liver, cardiac, lung disease, cancer, diabetes)
  • Known untreated obstructive sleep apnea
  • Hematocrit greater than 52
  • Severe skin disease which may interfere with testosterone gel absorption
  • Hypersensitivity to any of the drugs used in the study
  • History of a bleeding disorder or need for chronic anticoagulation
  • Participation in a drug study concurrently or in the last 90 days
  • History or current evidence of drug or alcohol abuse within 12 mo.
  • Weight more than 300 lbs.

Trial locations and contacts

1 site in 1 country.

United States1 site
  • VA Puget Sound Health Care System

    Seattle, Washington, 98108

Other trials in United States

About this study

Official title: Testosterone Replacement and Dutasteride Effectiveness (TRADE)

The purpose of this research study is to determine whether the combination of the male hormone testosterone [T] in gel form and the oral drug dutasteride [D], used to shrink large prostate glands can safely reduce the size of the prostate gland and symptoms of prostate enlargement (called benign prostatic hyperplasia [BPH]) compared to T treatment alone in men with low testosterone (called hypogonadism).

Read the detailed description

The primary aim of this study is to determine whether correction of hypogonadism using a combination of testosterone and dutasteride spares subjects from increases in prostate size and symptoms of BPH which may be associated with T alone.

We will also determine the effects of changes in serum T and dihydrotestosterone (DHT) on both the hormonal milieu and genetic program within the prostate gland itself. The technology employed will allow us to determine which genes are androgen responsive within each prostate tissue compartment. Together, these data may determine whether the combination of testosterone and dutasteride safely corrects the symptoms of BPH and hypogonadism and minimizes growth stimulus to the prostate at the genetic level. We will also assess the effects of the combination of T and dutasteride on cognitive function.

This is a six-month, double-blind, randomized, placebo-controlled, single-site study of older hypogonadal men with mild to moderate BPH.

Within each treatment group, a sub-group of subjects will undergo additional procedures as part of a Prostate Biopsy sub-study to obtain prostate tissue for hormonal and genetic analyses. Selection of subjects will be based on clinical indication and/or willingness to undergo prostate biopsies.

Being tested
Dutasteride, Testosterone gel, Placebo dutasteride
Keywords
androgen deficiency, testosterone, Benign Prostatic Hyperplasia, hypogonadism, prostate, BPH
Medical subject headings
Hypogonadism, Prostatic Hyperplasia

What participants receive

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

  • DutasterideDrug

    Also called AndroGel

    Dutasteride 0.5 mg orally daily

  • Testosterone gelDrug

    Also called Testim

    Testosterone gel 7.5 g daily topical

  • Placebo dutasterideDrug

    placebo dutasteride orally daily

Study groups in NCT00194675
Study groupRoleWhat they receive
Testosterone gel + oral placeboActive comparatorTestosterone 1% gel 7.5 topical daily + placebo dutasteride orally daily
Receives: Drug: Testosterone gel; Drug: Placebo dutasteride
Testosterone gel + oral dutasterideActive comparatorTestosterone 1% gel 7.5 topical daily + dutasteride 0.5 mg orally daily
Receives: Drug: Dutasteride; Drug: Testosterone gel

What is being measured

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

  1. Effects of Testosterone Gel Alone or in Combination With Oral Dutasteride on Prostate Volume in Hypogonadal Men With Benign Prostatic Hyperplasia.

    Measured: Baseline, Month 6

Secondary outcomes (5)
  1. Serum and Intraprostatic Hormone Levels: Prostate Specific Antigen (PSA)

    Measured: Baseline, Month 6

  2. The Effects of T Alone or in Combination With Dutasteride on Signs and Symptoms of Benign Prostatic Hyperplasia (BPH) in Hypogonadal Men With Benign Prostatic Hyperplasia. (International Prostate Symptom Score)

    International Prostate Symptom Score to assess lower urinary tract symptoms (LUTS) due to benign prostatic hyperplasia (BPH). Minimum score = 0, maximum score = 35; mildly symptomatic score = 0-7; moderately symptomatic score = 8-19; severely symptomatic score = 20-35; no subscales.

    Measured: Baseline, Month 3, Month 6

  3. Signs and Symptoms of Benign Prostatic Hyperplasia (BPH) in Hypogonadal Men (Uroflow)

    Measured: Baseline, 3-months, 6-months

  4. Signs and Symptoms Benign Prostatic Hyperplasia (BPH): Post-voiding Residual (PVR) Urinary Volume

    Measured: Baseline, 3-months, 6-months

  5. Serum Hormone Levels: Total Testosterone, Free Testosterone, and Dihydrotestosterone(DHT), Dehydroepiandrosterone(DHEA), and Androstenedione.

    Measured: Baseline, 3-months, 6-months

Timeline

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

  1. First posted19 Sep 2005 (estimated)
  2. Study startMar 2005
  3. Primary completionApr 2010
  4. Study completionDec 2010

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 4
Primary purpose
Treatment
Allocation
Randomised
Intervention model
Parallel groups
Masking
Double blind
Who is masked
Participant, Investigator
Enrolment
53 participants (actual)
IDs, dates and publications
ClinicalTrials.gov ID
NCT00194675
Sponsor's protocol ID
01166
Other IDs
01166, 4-2280-V
Acronym
TRADE
Status last verified
Oct 2017
First submitted
13 Sep 2005
Last updated
5 Dec 2017
Data monitoring committee
Yes

Publications

  • Gruenewald DA, Matsumoto AM. Testosterone supplementation therapy for older men: potential benefits and risks. J Am Geriatr Soc. 2003 Jan;51(1):101-15; discussion 115. doi: 10.1034/j.1601-5215.2002.51018.x.

    PubMed 12534854
  • Yialamas MA, Hayes FJ. Androgens and the ageing male and female. Best Pract Res Clin Endocrinol Metab. 2003 Jun;17(2):223-36. doi: 10.1016/s1521-690x(03)00018-6.

    PubMed 12787549
  • Jin B, Conway AJ, Handelsman DJ. Effects of androgen deficiency and replacement on prostate zonal volumes. Clin Endocrinol (Oxf). 2001 Apr;54(4):437-45. doi: 10.1046/j.1365-2265.2001.01240.x.

    PubMed 11318778
  • Behre HM, Bohmeyer J, Nieschlag E. Prostate volume in testosterone-treated and untreated hypogonadal men in comparison to age-matched normal controls. Clin Endocrinol (Oxf). 1994 Mar;40(3):341-9. doi: 10.1111/j.1365-2265.1994.tb03929.x.

    PubMed 7514512
  • Huggins C, Hodges CV. Studies on prostatic cancer. I. The effect of castration, of estrogen and androgen injection on serum phosphatases in metastatic carcinoma of the prostate. CA Cancer J Clin. 1972 Jul-Aug;22(4):232-40. doi: 10.3322/canjclin.22.4.232. No abstract available.

    PubMed 4625049
  • Bhasin S, Singh AB, Mac RP, Carter B, Lee MI, Cunningham GR. Managing the risks of prostate disease during testosterone replacement therapy in older men: recommendations for a standardized monitoring plan. J Androl. 2003 May-Jun;24(3):299-311. doi: 10.1002/j.1939-4640.2003.tb02676.x. No abstract available.

    PubMed 12721204
  • Morgentaler A, Bruning CO 3rd, DeWolf WC. Occult prostate cancer in men with low serum testosterone levels. JAMA. 1996 Dec 18;276(23):1904-6.

    PubMed 8968017
  • Schatzl G, Madersbacher S, Thurridl T, Waldmuller J, Kramer G, Haitel A, Marberger M. High-grade prostate cancer is associated with low serum testosterone levels. Prostate. 2001 Apr;47(1):52-8. doi: 10.1002/pros.1046.

    PubMed 11304729
  • Thompson IM, Goodman PJ, Tangen CM, Lucia MS, Miller GJ, Ford LG, Lieber MM, Cespedes RD, Atkins JN, Lippman SM, Carlin SM, Ryan A, Szczepanek CM, Crowley JJ, Coltman CA Jr. The influence of finasteride on the development of prostate cancer. N Engl J Med. 2003 Jul 17;349(3):215-24. doi: 10.1056/NEJMoa030660. Epub 2003 Jun 24.

    PubMed 12824459
  • Monti S, Di Silverio F, Iraci R, Martini C, Lanzara S, Falasca P, Poggi M, Stigliano A, Sciarra F, Toscano V. Regional variations of insulin-like growth factor I (IGF-I), IGF-II, and receptor type I in benign prostatic hyperplasia tissue and their correlation with intraprostatic androgens. J Clin Endocrinol Metab. 2001 Apr;86(4):1700-6. doi: 10.1210/jcem.86.4.7413.

    PubMed 11297606
  • Page ST, Hirano L, Gilchriest J, Dighe M, Amory JK, Marck BT, Matsumoto AM. Dutasteride reduces prostate size and prostate specific antigen in older hypogonadal men with benign prostatic hyperplasia undergoing testosterone replacement therapy. J Urol. 2011 Jul;186(1):191-7. doi: 10.1016/j.juro.2011.03.026. Epub 2011 May 14.

    PubMed 21575967

Questions about this trial

What is this clinical trial studying?

A Phase 4 study testing Dutasteride and Testosterone gel in people with Hypogonadism and Benign Prostatic Hyperplasia, 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 9 inclusion and 16 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 5 Dec 2017. 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. 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 4 studies take place after a treatment is approved, to learn more about its long-term benefits and risks in everyday use.

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 20 Aug 2012). 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?

Effects of Testosterone Gel Alone or in Combination With Oral Dutasteride on Prostate Volume in Hypogonadal Men With Benign Prostatic Hyperplasia. (time frame: Baseline, Month 6). 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 NCT00194675, which also lists 11 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 5 Dec 2017.

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