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Subcutaneous Testosterone Enanthate Safety in Adult Men Diagnosed With Hypogonadism

A 6-Month Safety Study of QuickShot™ Testosterone Administered Subcutaneously Once Each Week to Adult Males With Hypogonadism

Status
Completed
Phases
Phase 3
Study type
Interventional
Source
ClinicalTrials.gov
Registry ID
NCT02504541
Enrollment
133
Registered
2015-07-22
Start date
2015-07-31
Completion date
2016-06-30
Last updated
2018-03-30

For informational purposes only — not medical advice. Sourced from public registries and may not reflect the latest updates. Terms

Conditions

Hypogonadism

Keywords

Hypogonadism, Testosterone enanthate

Brief summary

Evaluation of safety of a concentration controlled testosterone enanthate QuickShot Testosterone regimen administered subcutaneously once each week to adult males with hypogonadism.

Detailed description

Safety assessments, including laboratory assessments, adverse events and injection site assessments, will be conducted for all patients at scheduled intervals during the Treatment Titration Period.

Interventions

Dose Adjustment 50 mg or 75 mg or 100 mg based upon Testosterone levels

Sponsors

Antares Pharma Inc.
Lead SponsorINDUSTRY

Study design

Allocation
NA
Intervention model
SINGLE_GROUP
Primary purpose
TREATMENT
Masking
NONE

Eligibility

Sex/Gender
MALE
Age
18 Years to 75 Years
Healthy volunteers
No

Inclusion criteria

* Adult men ≥18 and ≤75 years of age with a documented history of hypogonadism * Total testosterone levels \< 300 ng/dL at two qualification visits * Patients in good general health

Exclusion criteria

* Allergy to sesame or testosterone products * BMI ≥ 40 kg/m2 * Hematocrit ≥ 52% * History or current evidence of breast or prostate cancer * Elevated prostate-specific antigen (PSA) for age. * Abnormal digital rectal examination (DRE) * Unstable psychiatric illnesses * Obstructive uropathy of prostatic origin * Poorly controlled diabetes * Congestive heart failure * Within 6 months of screening, myocardial infarction (MI), unstable angina leading to hospitalization, percutaneous coronary intervention, coronary artery bypass graft, uncontrolled cardiac arrhythmia, stroke transient ischemia attack, carotid revascularization, endovascular procedure, or surgical intervention for peripheral vascular disease. * History or current treatment of thromboembolic disease. * Use of adrenocorticotropic hormone (ACTH) or oral/depot corticosteroids within 6 weeks of screening. * History of severe, untreated sleep apnea * Subjects with any clinically significant medical condition which, in the opinion of the investigator, would make the subject an unsuitable candidate for enrollment in the study * Positive serology for HIV, hepatitis B or hepatitis C * Current evidence of drug or alcohol abuse. * Skin conditions in injection site that could confound injection site assessments. * Administration of other investigational compounds within one month of screening or 5 half-lives of the investigational compound, whichever is longer). * Use of estrogen, gonadotropin-releasing hormone (GnRH) or growth hormone within 12 months of screening. * Use of other androgens (DHEA), anabolic steroids, other sex hormones) or other substances/supplements know to affect the pharmacokinetics (PK) of testosterone enanthate * Considered or scheduled surgical or dental procedures associated with blood loss ≥500 mL during study. * Donation of plasma or blood within 56 days of screening or history of donation of \> 50 mL of blood or plasma within 3 months of screening. * Donation of plasma or blood during study

Design outcomes

Primary

MeasureTime frameDescription
Incidence of Adverse Events as a Measure of Safety of QuickShot™ Testosterone (QST) Administered Subcutaneously (SC) Once Each Week to Adult Males With Hypogonadism26 weeksNumber of participants experiencing adverse events that started on or after the first dose of QST, or existed prior to the first dose and woresened in severity or relatedness to QST after dosing, were evaluated in this population. Although a patient may have had 2 or more TEAEs or SAEs, the patient was counted only once within a SOC category. The same patient may have contributed to 2 or more preferred term categories. (Four patients had a total of 9 SAEs during the study)

Countries

United States

Participant flow

Recruitment details

133 patients were enrolled in this study. 113 (85.0%) patients completed the study (through the Follow-up Visit) and 20 (15.0%) patients prematurely withdrew from the study.

Pre-assignment details

Although 21 sites participated in the study, only 19 sites enrolled patients in the United States. This study was intended to collect additional safety and exposure data, to ensure compliance and accuracy.

Participants by arm

ArmCount
Testosterone Enanthate Auto-injector
Testosterone enanthate 50 mg / 75 mg / 100 mg administered subcutaneously once each week with possible titration to a higher or lower dose at scheduled intervals during study.
133
Total133

Withdrawals & dropouts

PeriodReasonFG000
Overall StudyAdverse Event4
Overall StudyLost to Follow-up1
Overall StudyMet Stopping Criteria1
Overall StudyMultiple5
Overall StudyOther2
Overall StudyProtocol Violation2
Overall StudyTermination by Sponsor1
Overall StudyWithdrawal by Subject4

Baseline characteristics

CharacteristicTestosterone Enanthate Auto-injector
Age, Continuous54.5 years
STANDARD_DEVIATION 10.3
Ethnicity (NIH/OMB)
Hispanic or Latino
17 Participants
Ethnicity (NIH/OMB)
Not Hispanic or Latino
116 Participants
Ethnicity (NIH/OMB)
Unknown or Not Reported
0 Participants
Race (NIH/OMB)
American Indian or Alaska Native
0 Participants
Race (NIH/OMB)
Asian
1 Participants
Race (NIH/OMB)
Black or African American
18 Participants
Race (NIH/OMB)
More than one race
0 Participants
Race (NIH/OMB)
Native Hawaiian or Other Pacific Islander
0 Participants
Race (NIH/OMB)
Unknown or Not Reported
1 Participants
Race (NIH/OMB)
White
113 Participants
Region of Enrollment
United States
133 participants
Sex: Female, Male
Female
0 Participants
Sex: Female, Male
Male
133 Participants

Adverse events

Event typeEG000
affected / at risk
deaths
Total, all-cause mortality
0 / 133
other
Total, other adverse events
68 / 133
serious
Total, serious adverse events
4 / 133

Outcome results

Primary

Incidence of Adverse Events as a Measure of Safety of QuickShot™ Testosterone (QST) Administered Subcutaneously (SC) Once Each Week to Adult Males With Hypogonadism

Number of participants experiencing adverse events that started on or after the first dose of QST, or existed prior to the first dose and woresened in severity or relatedness to QST after dosing, were evaluated in this population. Although a patient may have had 2 or more TEAEs or SAEs, the patient was counted only once within a SOC category. The same patient may have contributed to 2 or more preferred term categories. (Four patients had a total of 9 SAEs during the study)

Time frame: 26 weeks

ArmMeasureGroupValue (COUNT_OF_PARTICIPANTS)
Testosterone Enanthate Auto-injectorIncidence of Adverse Events as a Measure of Safety of QuickShot™ Testosterone (QST) Administered Subcutaneously (SC) Once Each Week to Adult Males With HypogonadismPatients with any TEAE87 Participants
Testosterone Enanthate Auto-injectorIncidence of Adverse Events as a Measure of Safety of QuickShot™ Testosterone (QST) Administered Subcutaneously (SC) Once Each Week to Adult Males With HypogonadismPatients with any TEAE related to QST34 Participants
Testosterone Enanthate Auto-injectorIncidence of Adverse Events as a Measure of Safety of QuickShot™ Testosterone (QST) Administered Subcutaneously (SC) Once Each Week to Adult Males With HypogonadismPatients with SAE4 Participants
Testosterone Enanthate Auto-injectorIncidence of Adverse Events as a Measure of Safety of QuickShot™ Testosterone (QST) Administered Subcutaneously (SC) Once Each Week to Adult Males With HypogonadismPatients with TEAE leading to Discontinuation8 Participants
Testosterone Enanthate Auto-injectorIncidence of Adverse Events as a Measure of Safety of QuickShot™ Testosterone (QST) Administered Subcutaneously (SC) Once Each Week to Adult Males With HypogonadismPatients with QST related TEAE and discontinuation4 Participants

Source: ClinicalTrials.gov · Data processed: Feb 20, 2026