Clinical Trial: Clomid in Men With Low Testosterone With and Without Prior Treatment

Study Status: Recruiting
Recruit Status: Recruiting
Study Type: Interventional

Official Title: A Comparison of Clomiphene Citrate Responses in Men With Hypothalamic Hypogonadism naïve to, and Previously Treated With, Testosterone

Brief Summary: This study aims to explore whether men with low testosterone levels, due to altered brain regulation of male hormone function, who have been previously treated with testosterone, respond as well as men who have not been so treated to clomiphene citrate, an agent commonly used for female infertility that has been shown to improve male hormone secretion in some cases.

Detailed Summary: Clomiphene, an oral FDA-approved agent for female infertility has been shown to normalize testosterone levels in men with hypogonadotropic hypogonadism. It appears to be safe and well tolerated. This study will compare testosterone responses to clomiphene citrate in male veterans with hypothalamic hypogonadism naïve to treatment with responses of similar patients already receiving treatment with injectable or transdermal testosterone. This is an open-label, prospective, interventional trial to be conducted in an outpatient specialty care setting. We will randomize 64 hypogonadal male veterans evenly divided between naive and previous treatment and treat for 8 weeks with clomid, increasing the initial dose of 25 mg to 50 mg/day in those who fail to achieve target testosterone level (450 ng/dl) after the first 3 weeks. Endpoint measurements performed in the Phoenix VA Health Care System (PVAHCS) clinical laboratory will be total testosterone as well as bioavailable testosterone and sex hormone binding globulin. Total testosterone level at 8 weeks of treatment will be reported as the primary endpoint. Safety measures (CBC,liver functions, PSA) will be assessed at 8 weeks as well. This study will help serve as a guide for design of future studies of clomiphene in hypogonadal men.
Sponsor: Phoenix VA Health Care System

Current Primary Outcome: Total serum testosterone [ Time Frame: at the end of 8 weeks of treatment ]

laboratory measurement by standard immunometric method


Original Primary Outcome: Same as current

Current Secondary Outcome:

  • Bioavailable testosterone [ Time Frame: at the end of 8 weeks of treatment ]
    Non-SHBG bound testosterone by ammonium sulfate precipitation method
  • Serum sex hormone binding globulin (SHBG)level [ Time Frame: at the end of 8 weeks of treatment ]
    Laboratory measurement of SHBG by standard immunometric technique


Original Secondary Outcome: Same as current

Information By: Phoenix VA Health Care System

Dates:
Date Received: July 15, 2013
Date Started: October 2012
Date Completion: October 2015
Last Updated: October 20, 2015
Last Verified: October 2015