COMPARATIVE STUDY
JOURNAL ARTICLE
RANDOMIZED CONTROLLED TRIAL

Comparison of a new long-acting testosterone undecanoate formulation vs testosterone enanthate for intramuscular androgen therapy in male hypogonadism

T Minnemann, M Schubert, S Freude, D Hübler, I Gouni-Berthold, C Schumann, A Christoph, M Oettel, M Ernst, U Mellinger, W Krone, F Jockenhövel
Journal of Endocrinological Investigation 2008, 31 (8): 718-23
18852533

OBJECTIVE: To assess the efficacy and safety of a novel long-acting im testosterone undecanoate (TU) formulation in comparison with testosterone enanthate (TE).

SUBJECTS AND METHODS: An open-label, randomized, prospective clinical trial in 40 hypogonadal men (baseline serum testosterone levels <5 nmol/l), randomly assigned to 250 mg TE/3 weeks (no.=20) or 1000 mg TU im every 6 to 9 weeks for 30 weeks (no.=20). Subsequently, 32/40 men continued the study for another 114 weeks, now receiving TU 1000 mg/12 weeks.

RESULTS: TU and TE produced no statistically significant improvements in grip strength over the first 30 weeks, which only occurred after approximately 90 weeks when all subjects received TU. There were no changes in body mass index with TU and TE, neither in the follow-up period when all patients received TU. But ratios of waist to hip circumferences declined in the longer term. Total serum cholesterol, LDL cholesterol, and triglycerides declined over the first 30 weeks, while plasma HDL also declined. Plasma LDL decreased further under long-term TU therapy, while HDL then increased. Hemoglobin and hematocrit values significantly increased over the first 30 weeks in both treatment groups and then no further increase was observed. Levels did not exceed the upper limit of normal. In both treatment groups, serum prostate specific antigen levels rose slightly after 30 weeks, with no further increase over the first 12 months, remaining stable within the normal range. Plasma T before the following TU injection was above the lower limit of reference values. Four injections per year are adequate.

CONCLUSIONS: Administration of TU every 12 weeks is at least as safe and efficacious for treatment of hypogonadal men as TE, with a substantially lower frequency of administration. Follow-up over 114 weeks, when all subjects received TU, showed an excellent profile of efficacy and safety.

Full Text Links

Find Full Text Links for this Article

Discussion

You are not logged in. Sign Up or Log In to join the discussion.

Related Papers

Remove bar
Read by QxMD icon Read
18852533
×

Save your favorite articles in one place with a free QxMD account.

×

Search Tips

Use Boolean operators: AND/OR

diabetic AND foot
diabetes OR diabetic

Exclude a word using the 'minus' sign

Virchow -triad

Use Parentheses

water AND (cup OR glass)

Add an asterisk (*) at end of a word to include word stems

Neuro* will search for Neurology, Neuroscientist, Neurological, and so on

Use quotes to search for an exact phrase

"primary prevention of cancer"
(heart or cardiac or cardio*) AND arrest -"American Heart Association"