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HOP-2A - Intratesticular Hormone Levels (HOP-2A)

This study has been completed.
ClinicalTrials.gov Identifier:
First Posted: September 22, 2008
Last Update Posted: June 13, 2016
The safety and scientific validity of this study is the responsibility of the study sponsor and investigators. Listing a study does not mean it has been evaluated by the U.S. Federal Government. Read our disclaimer for details.
Information provided by (Responsible Party):
John Amory, University of Washington
The purpose of this investigational study is to find out what hormones are present in healthy male testicles using fine needle aspiration.

Healthy Male Infertility Prostate Disease

Study Type: Observational
Study Design: Observational Model: Case-Only
Time Perspective: Retrospective
Official Title: Intratesticular Hormone Levels in Healthy Young Men

Resource links provided by NLM:

Further study details as provided by John Amory, University of Washington:

Primary Outcome Measures:
  • Intratesticular Hormones in Normal Men [ Time Frame: 6-weeks ]
    Average between right and left testis for each subject and serum hormone concentration in 10 normal men

Biospecimen Retention:   Samples Without DNA
serum blood, testicular tissue

Enrollment: 10
Study Start Date: September 2008
Study Completion Date: December 2009
Primary Completion Date: January 2009 (Final data collection date for primary outcome measure)
Detailed Description:
We will collect a very small amount of fluid from each testicle. Participation will last up to 12 weeks. The study involves a minimum of 4 visits, the screening visit and procedure Day, fine needle aspiration of the testes (about 1-1.5 hours each) and two follow-up visits (about 30-45 minutes). Over the course of the study, you will have a little less than a 1/3-cup of blood drawn (roughly 2-3 tablespoons at each visit).

Information from the National Library of Medicine

Choosing to participate in a study is an important personal decision. Talk with your doctor and family members or friends about deciding to join a study. To learn more about this study, you or your doctor may contact the study research staff using the contacts provided below. For general information, Learn About Clinical Studies.

Ages Eligible for Study:   18 Years to 50 Years   (Adult)
Sexes Eligible for Study:   Male
Accepts Healthy Volunteers:   Yes
Sampling Method:   Non-Probability Sample
Study Population
Healthy males

Inclusion Criteria:

  • males between 18 and 50 years of age
  • sperm count greater than 20 million/ml, greater than 50% motility, and greater than 15% normal morphology
  • in good general health based on normal screening evaluation (consisting of a medical history, physical exam, normal sperm count, normal serum chemistry, hematology and baseline T, LH, and FSH levels)
  • body mass index ≥18 and ≤32 kg/m2
  • must agree not to participate in another research study involving drug exposure for the duration of the study

Exclusion Criteria:

  • men in poor general health, with abnormal blood results
  • sperm counts <20 million/ml on two tests
  • chronic, ongoing alcohol or drug abuse
  • participation in a long-term male contraceptive study within the past three months
  • history of testicular or scrotal surgery
  • history of infertility
  • abnormal testicular exam
  • abnormal DRE
  • chronic pain syndrome
  • use of steroids, testosterone, or medications which might interfere with androgen metabolism including ketoconazole, glucocorticoids
  • known bleeding disorder
  • use of medications which may affect bleeding time (ongoing aspirin or anti-inflammatory use, coumadin)
  Contacts and Locations
Information from the National Library of Medicine

To learn more about this study, you or your doctor may contact the study research staff using the contact information provided by the sponsor.

Please refer to this study by its ClinicalTrials.gov identifier (NCT number): NCT00756561

United States, Washington
University of Washington
Seattle, Washington, United States, 98195
Sponsors and Collaborators
University of Washington
Principal Investigator: John K Amory, MD, MPH University of Washington
  More Information

Additional Information:
Roth MY, Lin K, Amory JK, Matsumoto AM, Anawalt BD, Snyder CN, Kalhorn TF, Bremner WJ, Page ST. Serum LH correlates highly with intratesticular steroid levels in normal men. J Androl. 2010 Mar-Apr;31(2):138-45. doi: 10.2164/jandrol.109.008391. Epub 2009 Sep 24.
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. Epub 2006 Aug 29.
Anawalt BD, Amory JK, Herbst KL, Coviello AD, Page ST, Bremner WJ, Matsumoto AM. Intramuscular testosterone enanthate plus very low dosage oral levonorgestrel suppresses spermatogenesis without causing weight gain in normal young men: a randomized clinical trial. J Androl. 2005 May-Jun;26(3):405-13.
Coviello AD, Bremner WJ, Matsumoto AM, Herbst KL, Amory JK, Anawalt BD, Yan X, Brown TR, Wright WW, Zirkin BR, Jarow JP. Intratesticular testosterone concentrations comparable with serum levels are not sufficient to maintain normal sperm production in men receiving a hormonal contraceptive regimen. J Androl. 2004 Nov-Dec;25(6):931-8.
Coviello AD, Matsumoto AM, Bremner WJ, Herbst KL, Amory JK, Anawalt BD, Sutton PR, Wright WW, Brown TR, Yan X, Zirkin BR, Jarow JP. Low-dose human chorionic gonadotropin maintains intratesticular testosterone in normal men with testosterone-induced gonadotropin suppression. J Clin Endocrinol Metab. 2005 May;90(5):2595-602. Epub 2005 Feb 15.
Page ST, Kalhorn TF, Bremner WJ, Anawalt BD, Matsumoto AM, Amory JK. Intratesticular androgens and spermatogenesis during severe gonadotropin suppression induced by male hormonal contraceptive treatment. J Androl. 2007 Sep-Oct;28(5):734-41. Epub 2007 May 9.
Zhao M, Baker SD, Yan X, Zhao Y, Wright WW, Zirkin BR, Jarow JP. Simultaneous determination of steroid composition of human testicular fluid using liquid chromatography tandem mass spectrometry. Steroids. 2004 Oct-Nov;69(11-12):721-6.
Kalhorn TF, Page ST, Howald WN, Mostaghel EA, Nelson PS. Analysis of testosterone and dihydrotestosterone from biological fluids as the oxime derivatives using high-performance liquid chromatography/tandem mass spectrometry. Rapid Commun Mass Spectrom. 2007;21(19):3200-6.

Responsible Party: John Amory, Professor, University of Washington
ClinicalTrials.gov Identifier: NCT00756561     History of Changes
Other Study ID Numbers: 34593-B
First Submitted: September 18, 2008
First Posted: September 22, 2008
Results First Submitted: November 8, 2010
Results First Posted: July 19, 2013
Last Update Posted: June 13, 2016
Last Verified: May 2016

Keywords provided by John Amory, University of Washington:
Fine Needle Aspiration
Male Health
Male Contraception

Additional relevant MeSH terms:
Infertility, Male
Prostatic Diseases
Genital Diseases, Male
Genital Diseases, Female
Hormones, Hormone Substitutes, and Hormone Antagonists
Physiological Effects of Drugs

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