Testosterone 2% gel can normalize testosterone concentrations in men with low testosterone regardless of body mass index.

Authors:
Adrian Dobs
Adrian Dobs
Johns Hopkins University School of Medicine
United States
Dr Paul Norwood, MD
Dr Paul Norwood, MD
University of California at San Francisco
Associate Clinical Professor of Medicine at UC San Francisco
Diabetes, cholesterol, hypertension,
Fresno, CA | United States
Errol Gould
Errol Gould
University of Washington
United States
Surya Chitra
Surya Chitra
International Clinical Research Institute

J Sex Med 2014 Mar 28;11(3):857-64. Epub 2013 Nov 28.

Johns Hopkins University, Baltimore, MD, USA.

Introduction: Little is known about the effect of body mass index (BMI) on the efficacy and safety of testosterone therapy in hypogonadal men. A prior noncomparative trial demonstrated that testosterone 2% gel restored testosterone levels in hypogonadal men and was generally well tolerated.

Aim: This post hoc analysis evaluated the influence of BMI on the pharmacokinetics of testosterone therapy in men with low testosterone.

Methods: Men (N = 149) aged 18-75 applied testosterone 2% gel to the front and inner thigh once daily for 90 days. Starting dose was 40 mg/day, which could be adjusted at days 14, 35, and 60. Patients were split into categories depending on baseline BMI: Tertile 1 (≤ 29.1 kg/m(2)), Tertile 2 (29.2-32.4 kg/m(2)), and Tertile 3 (>32.4 kg/m(2)).

Main Outcome Measures: Efficacy end points were average serum total testosterone concentrations over 24 hours and maximum serum testosterone concentrations at day 90. Adverse events were recorded.

Results: The efficacy analysis included 129 men with low testosterone (mean age 52.9, 54.0, and 54.2 years for Tertiles 1, 2, and 3, respectively) defined as serum testosterone <250-300 ng/dL. Baseline testosterone levels were comparable across BMI tertiles. After 90 days of treatment with testosterone 2% gel (≥ 40 mg/day), 79.1%, 79.5%, and 73.8% of patients in Tertiles 1, 2, and 3, respectively, achieved serum testosterone concentrations in the physiologic range (i.e., ≥ 300 to ≤ 1,140 ng/dL). The mean average daily dose at day 90 was higher in participants in Tertiles 3 vs. 2 (P = 0.039) and Tertiles 3 vs. 1 (P = 0.010). The gel was generally well tolerated, with skin reactions the most commonly reported adverse event (16.1%; n = 24).

Conclusions: In this study, daily application of testosterone 2% gel was effective at returning serum testosterone to physiologic levels in men with low testosterone and high BMI, although required dose was affected by BMI.

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Source
https://linkinghub.elsevier.com/retrieve/pii/S17436095153070
Publisher Site
http://dx.doi.org/10.1111/jsm.12411DOI Listing
March 2014
26 Reads
3.151 Impact Factor

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