Hypogonadism Clinical Trial
Official title:
Pilot Open Study of Testosterone Replacement in Non-alcoholic Steatohepatitis
The main research questions are: In hypogonadal men with non-alcoholic steatohepatitis
(NASH), does Testosterone Replacement Therapy (TRT), given for 12 months
1. improve severity of steatosis on liver biopsy (Primary Question)?
2. improve severity of associated steatohepatitis on liver biopsy?
3. reduce liver fat content as assessed by proton Magnetic Resonance Spectroscopy
(1H-MRS)?
The work proposed here is an open pilot study of 10 patients, the main aim of which is to
assess the effect size of TRT in regard to these end points (regarding which there are no
published data), thereby allowing power calculations for a more definitive phase II trial.
Other aims would be assessing recruitment and consent rates, which would also inform the
design of the larger study.
20-35% of adults have non-alcoholic fatty liver disease (NAFLD), which often leads to liver
inflammation and damage and sometimes to cirrhosis, liver failure and liver cancer; it is
now a common indication for liver transplantation in the UK. No medical treatment has been
shown to be effective in preventing its progression.
Some men with NAFLD have low serum levels of testosterone (male hormone). Often, levels are
only slightly low and do not cause symptoms. However there are several reasons to think that
these low levels may be aggravating the liver disease. NAFLD is thought to be caused by
resistance of tissues to the actions of the hormone insulin (Insulin Resistance or IR). Low
testosterone levels may cause IR. Treatments for prostatic cancer which lower testosterone
levels result in both IR and in NAFLD. Mice who cannot produce testosterone also develop
NAFLD and this is reversed by testosterone replacement.
The investigators therefore speculate that testosterone replacement in men with NAFLD and
low blood testosterone levels will reduce liver fat. Investigators will study 10 men with
NAFLD and some inflammation or scarring (proven on liver biopsy performed for clinical
diagnosis) and who have mildly reduced testosterone levels. Investigators will see if giving
a 12 month course of Testosterone Replacement Therapy (TRT) to these men will lessen the
severity of their liver damage.
Consented patients will be seen after 6, 18, 30, 42 and 52 weeks. Patients will undergo a
baseline clinical assessment, blood tests, an ultra sound scan, magnetic resonance scanning
of the liver (to estimate liver fat), and a repeat liver biopsy to end the study.
Patients will complete questionnaires, and undergo clinical assessment, blood tests, an
ultrasound scan, and magnetic resonance (MR) scanning of the liver (to estimate liver fat)
at baseline. Patients will have clinical assessments and blood tests at 6-weekly intervals
for 12 months. At 12 months patients will have a repeat liver biopsy, ultrasound and MR
scan.
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