- ICH GCP
- US Clinical Trials Registry
- Clinical Trial NCT03973840
Assessment of Blood From Men Receiving Oral TU in Various Collection Tubes
July 8, 2019 updated by: Clarus Therapeutics, Inc.
A Study to Assess Post-collection Conversion of Testosterone Undecanoate (TU) to Testosterone in Blood From Men Receiving Oral TU Collected Into Different Types of Sample Tubes
To describe the rate of post-collection TU to testosterone conversion, as manifested by increases in testosterone concentration, in Plain tubes held at room temperature and sodium fluoride (NaF)-ethylenediaminetetraacetic acid (EDTA) tubes held at room temperature or on ice prior to centrifugation
Study Overview
Status
Completed
Conditions
Intervention / Treatment
Detailed Description
This was an open-label, non-randomized, single-sequence study in which men dosed with JATENZO had blood drawn into 3 different types of blood-collection tubes (ie, Plain, EDTA, and NaF-EDTA).
These tubes were then processed in different ways (ie, different durations between phlebotomy and centrifugation, different holding temperatures [room temperature or on ice] between phlebotomy and centrifugation).
After defined periods of incubation, the tubes were centrifuged and the serum/plasma transferred into vials and frozen.
The testosterone and TU levels in the serum/plasma were then measured using validated liquid chromatography/tandem mass spectrometry assays.
Study Type
Interventional
Enrollment (Actual)
13
Phase
- Phase 1
Contacts and Locations
This section provides the contact details for those conducting the study, and information on where this study is being conducted.
Study Locations
-
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Illinois
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Northbrook, Illinois, United States, 60062
- Clarus Therapeutics, Inc
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-
Participation Criteria
Researchers look for people who fit a certain description, called eligibility criteria. Some examples of these criteria are a person's general health condition or prior treatments.
Eligibility Criteria
Ages Eligible for Study
18 years to 65 years (Adult, Older Adult)
Accepts Healthy Volunteers
No
Genders Eligible for Study
Male
Description
Inclusion Criteria:
Subjects were required to meet all of the following criteria in order to be eligible for the study:
- Male (gender at birth) 18 to 65 years of age, inclusive, and legally able to give informed consent, as applicable by law. The percentage of non-Hispanic and Hispanic men was specified to be approximately ≥ 70% and ≤ 30%, respectively.
- Adequate venous access in the left or right arm to allow collection of a number of blood samples via a venous cannula or needle sticks
- Naïve to androgen-replacement therapy
- Willing to consume the entire protocol-specified breakfast and dinner meals
- Average screening systolic blood pressure < 140 mmHg and/or diastolic blood pressure < 90 mmHg
- Voluntarily gave written informed consent to participate in this study -
Exclusion Criteria:
Subjects who met any of the following criteria were not eligible for participation in this study:
- History of hypertension or taking anti-hypertensive medications
- Intercurrent disease deemed clinically significant, in the opinion of the Investigator, of any type; in particular, liver, kidney, uncontrolled or poorly controlled heart disease, including congestive heart failure, coronary heart disease, heart attack or cerebrovascular accident in prior 6 months, or psychiatric-illness, including severe depression
- Electrocardiogram which Principal Investigator, or designate, believed was clinically significantly abnormal
- Intercurrent process or disease which could have impacted the absorption of JATENZO, in particular vomiting, nausea, diarrhea, or inflammatory bowel disease
- Current use of the following groups of drugs that affect testosterone levels, testosterone metabolism, or levels of testosterone metabolites, namely antiandrogens, 5 alpha reductase inhibitors (eg, dutasteride, finasteride), estrogens, long-acting opioid analgesics (eg, methadone hydrochloride, buprenorphine hydrochloride), or human growth hormone
- History of or was currently being evaluated for breast or prostate cancer
- Prostate specific antigen above the upper limit of normal
- Positive test for antibodies to human immunodeficiency virus type 1 or 2, hepatitis B surface antigen, or antibodies to hepatitis C virus at the Screening visit
- Positive urine drug test at the Screening visit
- Current treatment with oral lipase inhibitors (eg, orlistat [Xenical]), bile acid-binding resins (eg, cholestyramine [Questran], colestipol [Colestid]), fibric acid derivatives (eg, clofibrate [Atromid-X], gemfibrozil [Lopid]), and probucol (Lorelco).
- Smokers who were unable to refrain from smoking during the confinement period required in this study
- Current evidence of or history of abuse of alcohol or any drug substance within the previous 2 years
- Receipt of any drug as part of a research study within 30 days of initial dose administration in this study
- Blood donation (usually 550 mL) within the 12-week period before the initial study drug dose
- Hematocrit < 35% or > 50%
- Body mass index ≥ 31 kg/m2 -
Study Plan
This section provides details of the study plan, including how the study is designed and what the study is measuring.
How is the study designed?
Design Details
- Primary Purpose: Diagnostic
- Allocation: N/A
- Interventional Model: Single Group Assignment
- Masking: None (Open Label)
Arms and Interventions
Participant Group / Arm |
Intervention / Treatment |
---|---|
Experimental: healthy men treatment arm
Subjects were given 15 doses over 8 days, and then blood was drawn into several types of collection tubes at different storage conditions.
|
dose was given orally and allowed to reach steady state
|
What is the study measuring?
Primary Outcome Measures
Outcome Measure |
Measure Description |
Time Frame |
---|---|---|
measure rate of post-collection TU-to-testosterone conversion in 3 types of collection tubes
Time Frame: 8 days
|
To describe the rate of post-collection TU to testosterone conversion, as manifested by increases in testosterone concentration, in Plain tubes held at room temperature and sodium fluoride (NaF)-ethylenediaminetetraacetic acid (EDTA) tubes held at room temperature or on ice prior to centrifugation
|
8 days
|
Secondary Outcome Measures
Outcome Measure |
Measure Description |
Time Frame |
---|---|---|
rate of post-collection TU-to-testosterone conversion, as manifested by increases in testosterone concentration, in EDTA and NaF-EDTA collection tubes
Time Frame: 8 days
|
To describe the rate of post-collection TU to testosterone conversion, as manifested by increases in testosterone concentration, in EDTA and NaF-EDTA tubes held at room temperature or on ice prior to centrifugation
|
8 days
|
magnitude of overestimation of the true circulating testosterone concentration at 5 hours postdose
Time Frame: 8 days
|
To estimate the magnitude of overestimation of the true circulating testosterone concentration at 5 hours postdose, when blood was collected in various tubes and the tubes were held at room temperature or on ice.
|
8 days
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healthy men's testosterone levels in serum and plasma
Time Frame: 8 days
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To compare healthy men's testosterone levels in serum and plasma from Plain and EDTA tubes, respectively
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8 days
|
Other Outcome Measures
Outcome Measure |
Measure Description |
Time Frame |
---|---|---|
Incidence of Treatment-Emergent Adverse Events
Time Frame: 8 days
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To characterize the safety and tolerability of JATENZO
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8 days
|
Collaborators and Investigators
This is where you will find people and organizations involved with this study.
Sponsor
Collaborators
Study record dates
These dates track the progress of study record and summary results submissions to ClinicalTrials.gov. Study records and reported results are reviewed by the National Library of Medicine (NLM) to make sure they meet specific quality control standards before being posted on the public website.
Study Major Dates
Study Start (Actual)
July 15, 2018
Primary Completion (Actual)
July 31, 2018
Study Completion (Actual)
July 31, 2018
Study Registration Dates
First Submitted
June 2, 2019
First Submitted That Met QC Criteria
June 3, 2019
First Posted (Actual)
June 4, 2019
Study Record Updates
Last Update Posted (Actual)
July 9, 2019
Last Update Submitted That Met QC Criteria
July 8, 2019
Last Verified
July 1, 2019
More Information
Terms related to this study
Additional Relevant MeSH Terms
- Endocrine System Diseases
- Gonadal Disorders
- Hypogonadism
- Eunuchism
- Physiological Effects of Drugs
- Antineoplastic Agents
- Hormones
- Hormones, Hormone Substitutes, and Hormone Antagonists
- Antineoplastic Agents, Hormonal
- Androgens
- Anabolic Agents
- Testosterone
- Methyltestosterone
- Testosterone undecanoate
- Testosterone enanthate
- Testosterone 17 beta-cypionate
Other Study ID Numbers
- CLAR-18019
Plan for Individual participant data (IPD)
Plan to Share Individual Participant Data (IPD)?
No
Drug and device information, study documents
Studies a U.S. FDA-regulated drug product
Yes
Studies a U.S. FDA-regulated device product
No
This information was retrieved directly from the website clinicaltrials.gov without any changes. If you have any requests to change, remove or update your study details, please contact register@clinicaltrials.gov. As soon as a change is implemented on clinicaltrials.gov, this will be updated automatically on our website as well.
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