Safety and Efficacy Trial of Oral Testosterone Undecanoate (TU) in Hypogonadal Men
Condition: Male Hypogonadism
MeSH terms: Hypogonadism
Study type: Interventional
Phase: Phase 3

Summary: 
      The purpose of this study is to determine the safety and efficacy of an oral testosterone
      undecanoate formulation for use as testosterone-replacement therapy in men with low
      testosterone.
    

Detailed description: 
      This was a randomized, open-label, 2-arm, active controlled, 12-month study of Oral TU that
      planned to enroll ≈ 300 hypogonadal men (≈ 150/group) at multiple study sites. Incorporated
      in the design was dose titration based on serum T concentration assessed 4-6 hrs post AM
      dose. Following a 2-visit screening period during which a serum T concentration was measured,
      eligible subjects were randomized to either Oral TU (Group A) or transdermal T-gel (Group B)
      for dosing during Treatment Period 1 (Days 0 to 42). Group A was initially dosed with 400 mg
      T daily (two 100 mg capsules, orally, twice a day [BID]), and Group B was initially dosed
      with 5 g of transdermal 1% T-gel.

      Serum T sampling was done on Day 30, 4-6 hours after the morning dose and these T
      concentration results were used to determine the need for dose titration. Dose titration
      occurred on Day 42 for Treatment Period 2, until Day 90. Subjects whose dose was titrated on
      Day 42 were re-evaluated on Day 60 , with dose adjustments made as necessary on Day 74.

      Serum T sampling was performed on Day 90, for Oral TU subjects who had dose titration on Day
      74, on Day 105. If the serum T level was > 1800 ng/dL, the sample was repeated; subjects were
      discontinued if the second assayed T concentration was > 1800 ng/dL. An additional dose
      titration was done for subjects whose Day 180 occurred after a protocol amendment. Subjects
      taking 150 mg T BID with serum T over 1500 ng/dL on two separate draws were discontinued.

      Safety measures included physical examination, vital signs, fasting laboratory analysis
      (hematology, chemistry, urinalysis), CV biomarker monitoring [hs-CRP, Lp-PLA2, Lp(a), and
      ApoA1], measurement of sex hormone binding globulin (SHBG); luteinizing hormone (LH),
      follicle-stimulating hormone (FSH); prostate specific antigen (PSA), and the American
      Urological Association/International Prostate Symptom Score (AUA/I-PSS).
    

Intervention name(s): Oral testosterone undecanoate; topical testosterone gel
Intervention type(s): Drug; Drug
Intervention description(s): Starting dose: 200 mg T (as TU) BID. Doses may be titrated up to a maximum dose of 300 mg T (as TU) BID or down to a minimum dose of 100 mg T (as TU) BID based on serum T values collected at 4-6 hours post AM dose on Days 30 and 60.; Starting dose: 5 g T applied once daily. Doses may be titrated up to a maximum dose of 10 g daily or down to a minimum dose of 2.5 g daily based on serum T values collected at 4-6 hours post AM dose on Days 30 and 60.
Other intervention name(s): Oral TU; T-gel
Intervention MeSH terms: Methyltestosterone; Testosterone; Testosterone undecanoate; Testosterone enanthate; Testosterone 17 beta-cypionate
Allocation: Randomized
Intervention model: Parallel Assignment
Masking: None (Open Label)
Primary purpose: Treatment
Keywords: testosterone; male hypogonadism; low testosterone