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Subcutaneous vs. Intramuscular Testosterone

Subcutaneous Testosterone Therapy in Men Compared to Intramuscular Testosterone Therapy in Men

Status
Completed
Phases
Phase 4
Study type
Interventional
Source
ClinicalTrials.gov
Registry ID
NCT03091348
Enrollment
4
Registered
2017-03-27
Start date
2017-08-29
Completion date
2018-01-02
Last updated
2019-10-08

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

Conditions

Hypogonadism, Male, Testosterone Deficiency

Brief summary

In this randomized, cross-over study 20 subjects who are undergoing testosterone (T) therapy for the treatment of T deficiency will receive both subcutaneous testosterone therapy and intramuscular testosterone therapy. One group will receive a SQ injection followed by an IM injection and one group will receive an IM injection followed by a SQ injection. The primary objective of this study is to measure testosterone concentration in men after these two treatment routes and determine if there are any significant differences due to modes of administration. Endpoints will include total serum testosterone and calculated free testosterone. A questionnaire will also be administered to assess overall patient experience with each route of administration.

Detailed description

Subjects planning to initiate testosterone treatment via injection at MHB will be consented into the study. Upon enrollment in the study, the randomization will be completed for each subject. Blood collection will occur before each injection. Subjects will rate pain on the Likert scale following each injection. After treatment with the first mode of T administration (SQ or IM depending on randomization), subjects will come in for blood draws 3 days and 7 days following the injection. Two weeks after the initial injection, subjects will come in for treatment with the second mode of T administration (SQ or IM depending on randomization). Subjects will come in for blood draws 3 days and 7 days following the second injection. Two weeks after the second injection, subjects will complete an end of study assessment with an Investigator and will complete a survey assessing their satisfaction with treatment. Subjects will likely continue testosterone therapy at Men's Health Boston after completion of the study.

Interventions

DRUGTestosterone

Testosterone cypionate injection

Sponsors

Men's Health Boston
Lead SponsorOTHER

Study design

Allocation
RANDOMIZED
Intervention model
CROSSOVER
Primary purpose
TREATMENT
Masking
NONE

Eligibility

Sex/Gender
MALE
Age
18 Years to 90 Years
Healthy volunteers
No

Inclusion criteria

* Ability to read, write, and understand English * Age greater than or equal to 18 * Diagnosed with testosterone deficiency * Pre-enrollment testosterone concentration of less than 350 ng/dL * Planning to initiate testosterone treatment at MHB * Willing to be followed at MHB for at least one month * Willing to provide informed consent for this study

Exclusion criteria

* Previous exposure to exogenous T, clomiphene citrate, or other Selective Estrogen Receptor Modulators, unless off therapy for at least 12 weeks * American Urological Association Prostate Symptom score of 15 or greater or significant prostatic symptoms * History of carcinoma, tumors or induration of the prostate or the male mammary gland, including suspicion thereof * Pre-enrollment serum PSA more than 4 ng/ml * Serious psychiatric disease or uncontrolled medical illness, as suspected from the history or clinical examination * Used any sex hormones or steroidal anabolic drug supplements within 28 days before pre-enrollment testosterone collection or at any time throughout the study * Incapable of giving informed consent or complying with the protocol

Design outcomes

Primary

MeasureTime frameDescription
Change in Levels of Serum Total Testosterone ConcentrationVisit 2, Visit 3, Visit 4, Visit 5, Visit 6 and Visit 7Blood samples measured by Beckman assays and equipment.
Change in Levels of Serum Calculated Free T ConcentrationLast visit ( Visit 7)Blood samples measured by Beckman assays and equipment.

Secondary

MeasureTime frameDescription
Change in Levels of Serum FSHVisit 2, Visit 3, Visit 4, Visit 5, Visit 6 and Visit 7Blood samples measured by Beckman assays and equipment.
Change in Levels of Serum SHBGVisit 2, Visit 3, Visit 4, Visit 5, Visit 6 and Visit 7Blood samples measured by Beckman assays and equipment.
Change in Level of Serum PSALast visit (Visit 7)Blood samples measured by Beckman assays and equipment.
Change in Levels of Serum EstradiolVisit 2, Visit 3, Visit 4, Visit 5, Visit 6 and Visit 7Blood samples measured by Beckman assays and equipment.
Change in Low Testosterone Questionnaire Responsesafter last vist #7Answers recorded at baseline, 2 weeks, up to 4 weeks. Scale is 1-5 (strongly disagree to strongly agree) Lower scores are better
Change in International Prostate Symptom Scoresafter last vist #7Answers recorded at baseline, 2 weeks, up to 4 weeks. Scale 0-35, from Mild to Severe Lower score is better
Change in Levels of Whole Blood HematocritLast visit (Visit 7)Blood samples measured by Quest assays and equipment.
Change in Levels of Serum LHVisit 2, Visit 3, Visit 4, Visit 5, Visit 6 and Visit 7Blood samples measured by Beckman assays and equipment.

Countries

United States

Participant flow

Participants by arm

ArmCount
SQ-IM
Subcutaneous testosterone injection followed by intramuscular testosterone injection Testosterone: Testosterone cypionate injection
0
IM-SQ
Intramuscular testosterone injection followed by subcutaneous testosterone injection Testosterone: Testosterone cypionate injection
1
Total1

Withdrawals & dropouts

PeriodReasonFG000FG001
Overall StudyLost to Follow-up21

Baseline characteristics

CharacteristicTotalIM-SQSQ-IM
Age, Continuous44 years
STANDARD_DEVIATION 0
44 years
STANDARD_DEVIATION 0
Estradiol (E2)24.5 pg/ml24.5 pg/ml
Hemophagocytic lymphohistiocytosis(hLH)3 miu/ml3 miu/ml
Human Follicle Stimulating Hormone (hFSH)3.5 miu/ml3.5 miu/ml
Race (NIH/OMB)
American Indian or Alaska Native
0 Participants0 Participants
Race (NIH/OMB)
Asian
0 Participants0 Participants
Race (NIH/OMB)
Black or African American
0 Participants0 Participants
Race (NIH/OMB)
More than one race
0 Participants0 Participants
Race (NIH/OMB)
Native Hawaiian or Other Pacific Islander
0 Participants0 Participants
Race (NIH/OMB)
Unknown or Not Reported
0 Participants0 Participants
Race (NIH/OMB)
White
1 Participants1 Participants
Region of Enrollment
United States
1 participants1 participants
Sex: Female, Male
Female
0 Participants0 Participants0 Participants
Sex: Female, Male
Male
1 Participants1 Participants0 Participants
Sex hormone binding globulin(SHBG)27.3 nmol/l27.3 nmol/l
Testosterone317.1 ng/dl317.1 ng/dl

Adverse events

Event typeEG000
affected / at risk
EG001
affected / at risk
deaths
Total, all-cause mortality
0 / 20 / 2
other
Total, other adverse events
0 / 20 / 2
serious
Total, serious adverse events
0 / 20 / 2

Outcome results

Primary

Change in Levels of Serum Calculated Free T Concentration

Blood samples measured by Beckman assays and equipment.

Time frame: Last visit ( Visit 7)

Population: loss to follow up

ArmMeasureValue (NUMBER)
SQChange in Levels of Serum Calculated Free T Concentration0.84 ng/dL
IMChange in Levels of Serum Calculated Free T Concentration14.74 ng/dL
Primary

Change in Levels of Serum Total Testosterone Concentration

Blood samples measured by Beckman assays and equipment.

Time frame: Visit 2, Visit 3, Visit 4, Visit 5, Visit 6 and Visit 7

Population: loss to follow up

ArmMeasureGroupValue (NUMBER)
SQChange in Levels of Serum Total Testosterone Concentrationvisit 2NA ng/dl
SQChange in Levels of Serum Total Testosterone Concentrationvisit 3NA ng/dl
SQChange in Levels of Serum Total Testosterone Concentrationvisit 4203.5 ng/dl
SQChange in Levels of Serum Total Testosterone Concentrationvist 51367.9 ng/dl
SQChange in Levels of Serum Total Testosterone Concentrationvisit 6980.8 ng/dl
SQChange in Levels of Serum Total Testosterone Concentrationvisit 7144.7 ng/dl
IMChange in Levels of Serum Total Testosterone Concentrationvisit 6NA ng/dl
IMChange in Levels of Serum Total Testosterone Concentrationvisit 21043.6 ng/dl
IMChange in Levels of Serum Total Testosterone Concentrationvist 5NA ng/dl
IMChange in Levels of Serum Total Testosterone Concentrationvisit 3785.7 ng/dl
IMChange in Levels of Serum Total Testosterone Concentrationvisit 7NA ng/dl
IMChange in Levels of Serum Total Testosterone Concentrationvisit 4NA ng/dl
Secondary

Change in International Prostate Symptom Scores

Answers recorded at baseline, 2 weeks, up to 4 weeks. Scale 0-35, from Mild to Severe Lower score is better

Time frame: after last vist #7

Population: loss to follow up

Secondary

Change in Level of Serum PSA

Blood samples measured by Beckman assays and equipment.

Time frame: Last visit (Visit 7)

Population: loss to follow up

ArmMeasureValue (NUMBER)
SQChange in Level of Serum PSA0.25 ng/mL
IMChange in Level of Serum PSA0.02 ng/mL
Secondary

Change in Levels of Serum Estradiol

Blood samples measured by Beckman assays and equipment.

Time frame: Visit 2, Visit 3, Visit 4, Visit 5, Visit 6 and Visit 7

Population: loss to follow up

ArmMeasureGroupValue (NUMBER)
SQChange in Levels of Serum Estradiolvisit 2NA pg/mL
SQChange in Levels of Serum Estradiolvisit 3NA pg/mL
SQChange in Levels of Serum Estradiolvisit 430.06 pg/mL
SQChange in Levels of Serum Estradiolvisit 545.12 pg/mL
SQChange in Levels of Serum Estradiolvisit 664.74 pg/mL
SQChange in Levels of Serum Estradiolvisit 725.99 pg/mL
IMChange in Levels of Serum Estradiolvisit 6NA pg/mL
IMChange in Levels of Serum Estradiolvisit 270.03 pg/mL
IMChange in Levels of Serum Estradiolvisit 5NA pg/mL
IMChange in Levels of Serum Estradiolvisit 352.00 pg/mL
IMChange in Levels of Serum Estradiolvisit 7NA pg/mL
IMChange in Levels of Serum Estradiolvisit 4NA pg/mL
Secondary

Change in Levels of Serum FSH

Blood samples measured by Beckman assays and equipment.

Time frame: Visit 2, Visit 3, Visit 4, Visit 5, Visit 6 and Visit 7

Population: loss to follow up

ArmMeasureGroupValue (NUMBER)
SQChange in Levels of Serum FSHvisit 40.2 miu/ml
SQChange in Levels of Serum FSHvisit 60.05 miu/ml
SQChange in Levels of Serum FSHvisit 50.1 miu/ml
SQChange in Levels of Serum FSHvisit 3NA miu/ml
SQChange in Levels of Serum FSHvisit 70.3 miu/ml
SQChange in Levels of Serum FSHvisit 2NA miu/ml
IMChange in Levels of Serum FSHvisit 7NA miu/ml
IMChange in Levels of Serum FSHvisit 21.3 miu/ml
IMChange in Levels of Serum FSHvisit 30.4 miu/ml
IMChange in Levels of Serum FSHvisit 4NA miu/ml
IMChange in Levels of Serum FSHvisit 6NA miu/ml
IMChange in Levels of Serum FSHvisit 5NA miu/ml
Secondary

Change in Levels of Serum LH

Blood samples measured by Beckman assays and equipment.

Time frame: Visit 2, Visit 3, Visit 4, Visit 5, Visit 6 and Visit 7

Population: loss to follow up

ArmMeasureGroupValue (NUMBER)
SQChange in Levels of Serum LHvisit 50.04 miu/ml
SQChange in Levels of Serum LHvisit 3NA miu/ml
SQChange in Levels of Serum LHvisit 60.1 miu/ml
SQChange in Levels of Serum LHvisit 2NA miu/ml
SQChange in Levels of Serum LHvisit 70.4 miu/ml
SQChange in Levels of Serum LHvisit 40.2 miu/ml
IMChange in Levels of Serum LHvisit 7NA miu/ml
IMChange in Levels of Serum LHvisit 4NA miu/ml
IMChange in Levels of Serum LHvisit 5NA miu/ml
IMChange in Levels of Serum LHvisit 20.4 miu/ml
IMChange in Levels of Serum LHvisit 30.3 miu/ml
IMChange in Levels of Serum LHvisit 6NA miu/ml
Secondary

Change in Levels of Serum SHBG

Blood samples measured by Beckman assays and equipment.

Time frame: Visit 2, Visit 3, Visit 4, Visit 5, Visit 6 and Visit 7

Population: loss to follow up

ArmMeasureGroupValue (NUMBER)
SQChange in Levels of Serum SHBGvisit 720.7 nmol/l
SQChange in Levels of Serum SHBGvisit 524.8 nmol/l
SQChange in Levels of Serum SHBGvisit 622.9 nmol/l
SQChange in Levels of Serum SHBGvisit 2NA nmol/l
SQChange in Levels of Serum SHBGvisit 3NA nmol/l
SQChange in Levels of Serum SHBGvisit 427.8 nmol/l
IMChange in Levels of Serum SHBGvisit 322 nmol/l
IMChange in Levels of Serum SHBGvisit 7NA nmol/l
IMChange in Levels of Serum SHBGvisit 225.5 nmol/l
IMChange in Levels of Serum SHBGvisit 5NA nmol/l
IMChange in Levels of Serum SHBGvisit 4NA nmol/l
IMChange in Levels of Serum SHBGvisit 6NA nmol/l
Secondary

Change in Levels of Whole Blood Hematocrit

Blood samples measured by Quest assays and equipment.

Time frame: Last visit (Visit 7)

Population: loss to follow up

ArmMeasureValue (NUMBER)
SQChange in Levels of Whole Blood HematocritNA g/dL
IMChange in Levels of Whole Blood Hematocrit1.9 g/dL
Secondary

Change in Low Testosterone Questionnaire Responses

Answers recorded at baseline, 2 weeks, up to 4 weeks. Scale is 1-5 (strongly disagree to strongly agree) Lower scores are better

Time frame: after last vist #7

Population: loss to follow up

Source: ClinicalTrials.gov · Data processed: Feb 4, 2026