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CompletedNCT03792321SETH2Updated Jan 4, 2019

Study on Effects of Testosterone Replacement Therapy in Hypogonadal Type 2 Diabetic Patients" (SETH2)

A Phase 4 interventional study of Testosterone Undecanoate and Placebo in Hypogonadism, Male, Diabetes Mellitus, Type 2 and Obesity, sponsored by University Medical Centre Ljubljana. Completed. Open to male participants aged 35 Years and older. Per ClinicalTrials.gov, last updated 2019-01-04.

Sponsored by University Medical Centre Ljubljana · Phase 4, Interventional, and Treatment

From the registry’s dates

  • Registered 4 years 11 months after the study started (first participant enrolled Jan 2014, registered Dec 2018).
Phase
Phase 4
Study type
Interventional
Enrollment
55
Allocation
Randomized
Ages
35 Years and older
Sex
Male
01

Study summary

Aim of the study was to investigate the effects of testosterone replacement therapy on components of metabolic syndrome, vascular function and morphology, grade of non-alcoholic fatty liver disease (NAFLD), bone mineral density (BMD) and health-related quality of life.

Read the detailed description

Studies have shown that approximately 50 % of older obese males, who are being treated for diabetes mellitus type 2, also exhibit low testosterone levels. Hypogonadism negatively affects glycemic control, exacerbates early cardio-vascular disease, causes osteoporosis, erectile disfunction, reduces lean body mass, accelerates the accumulation of visceral fat and leads to obesity.

Patients with diabetes mellitus type 2 and confirmed hypogonadism were enrolled into this randomized, double-blind, placebo-controlled clinical study. Placebo group patients were receiving placebo throughout the first year of this study and Testosterone group patients were receiving testosterone undecanoate during first year. Both groups were receiving testosterone undecanoate throughout the second year of this study.

02

Conditions studied

  • Hypogonadism, Male
  • Diabetes Mellitus, Type 2
  • Obesity

Keywords

  • testosterone
  • hypogonadism
  • diabetes mellitus
  • visceral obesity
  • insulin resistance
  • metabolic syndrome
  • NAFLD
  • endothelial function
03

In context

Eunuchism

75 studies on the registry are indexed under Eunuchism; 21 are open to participants now.

This study's enrollment of 55 is close to the median of 60 across 55 interventional studies indexed under Eunuchism.

Browse Eunuchism studies →

Lead sponsor

University Medical Centre Ljubljana is the lead sponsor of 296 studies on the registry; 72 are open to participants now.

Counted across the registry records on this site, refreshed daily.

04

Who can participate

Ages eligible
35 Years and older
Sexes eligible
Male
Accepts healthy volunteers
No

Go through the criteria one by one — yes, no or not sure — and take the list to your doctor or the study team. Kept in this browser only.

Inclusion criteria

  • men aged > 35 years
  • > 30 kg/m2
  • confirmed hypogonadism
  • type 2 diabetes mellitus treated with non-insulin therapy

Exclusion criteria

Exclusion Criteria:

  • previously treated hypogonadism
  • the 2 diabetes mellitus treated with insulin therapy
  • a history of current prostate or breast cancer
  • severe benign prostatic hyperplasia
  • elevated prostate-specific antigen (PSA > 4.0 lg/l)
  • severe heart failure
  • acute coronary event or procedure during the six months leading up to the study
  • chronic obstructive lung disease
  • hypothyroidism
  • severe obstructive sleep apnea (OSA)
  • active infection
  • rheumatoid arthritis
Terms in these criteria, in plain language(1)

Underlined terms in the criteria open these too. Explained by clinicaltrials.gg, not part of the registry record. The study team decides who can take part.

BMI (body mass index)

Weight in kilograms divided by height in metres squared. Example: 70 kg and 1.75 m gives 70 ÷ (1.75 × 1.75) ≈ 22.9.

What counts as overweight or obesity differs between countries (some use lower cut-offs), so go by the range the study states.

05

Study design

Phase
Phase 4
Primary purpose
Treatment
Allocation
Randomized
Intervention model
Parallel assignment
Masking
Double (Participant, Investigator)
Enrollment
55 participants (actual)

Study arms

  • Active comparator
    Testosterone

    Testosterone arm patients were receiving testosterone undecanoate 1000 mg intramuscular injections two years; according to the protocol every 10 weeks

    Drug: Testosterone Undecanoate

  • Placebo comparator
    Placebo

    Placebo arm patients were receiving placebo throughout the first year of this study and testosterone undecanoate 1000 mg intramuscular injections during second year.

    Drug: Testosterone Undecanoate · Drug: Placebo

Interventions

06

What researchers measure

Primary outcomes

  1. Effects of testosterone replacement therapy on glycemic control - fasting plasma glucose (FPG) mmol/l

    The primary outcome measure was change in glycemic control - fasting plasma glucose (FPG) mmol/l

    Time frame: FPG was measured at baseline, after 12 months and after 24 months

  2. Effects of testosterone replacement therapy on glycemic control - glycated hemoglobin A1c (HbA1c) %

    The primary outcome measure was change in glycemic control - glycated hemoglobin A1c (HbA1c) %

    Time frame: HbA1c was measured at baseline, after 12 months and after 24 months

  3. Effects of testosterone replacement therapy on parameters of metabolic syndrome - change in HOMA-IR

    The primary outcome measure was change in Homeostasis model assessment of insulin resistance (HOMA-IR)

    Time frame: HOMA-IR was calculated at the baseline, after 12 months and after 24 months of clinical trial.

  4. Effects of testosterone replacement therapy on vascular function - change in flow mediated dilatation (FMD) %

    The primary outcome measure was change in flow mediated dilatation (FMD) % assessed by vascular ultrasound

    Time frame: FMD was measured at baseline, after 12 months and after 24 months

  5. Effects of testosterone replacement therapy on vascular morphology - intima-media thickness (IMT)

    The primary outcome measure was change in intima-media thickness (IMT) mm assessed by vascular ultrasound

    Time frame: IMT was measured at baseline, after 12 months and after 24 months

Secondary outcomes

  1. Effects of testosterone replacement therapy on non-alcoholic fatty liver disease (NAFLD)

    The secondary outcome was change in grade of non-alcoholic fatty liver disease (NAFLD) graded as either "none", "mild", "moderate" and "severe", assessed by abdominal ultrasound

    Time frame: Grade of NAFLD was determined at baseline and after 24 months

  2. Effects of testosterone replacement therapy on bone mineral density (BMD)

    The secondary outcome was change in bone mineral density assessed by dual-energy x-ray absorptiometry (DXA) g/cm\^2

    Time frame: Change in bone mineral density was measured at baseline and after 24 months

  3. Effects of testosterone replacement on total testosterone (TT), calculated free testosterone (cFT), and calculated bioavailable testosterone (BT) concentrations

    The secondary outcome were changes in total testosterone (TT), calculated free testosterone (cFT), and calculated bioavailable testosterone (BT) concentrations - all in nmol/l

    Time frame: Changes in total testosterone (TT), calculated free testosterone (cFT), and calculated bioavailable testosterone (BT) concentrations were measured baseline, after 12 months and 24 months

  4. Effects of testosterone replacement on prostate specific antigen (PSA)

    The secondary outcome was change in prostate specific antigen (PSA) ng/ml

    Time frame: Prostate specific antigen (PSA) was measured at baseline,3,6,12,15,18 and 24 months

  5. Effects of testosterone replacement on hematocrit

    The secondary outcome was change in hematocrit (Hct) %

    Time frame: Hematocrit was measured at baseline,3,6,12,15,18 and 24 months

07

Study locations

No study locations are listed for this record.

08

References and documents

Individual participant data

Plan to share: Undecided

No publications or documents are linked to this record.

09

Updates

Tracking since Sep 25, 2026
No changes since tracking began. The registry record was last updated on Jan 4, 2019, before this site started recording changes on Sep 25, 2026. Its history is on ClinicalTrials.gov ↗
10

Registry details

Key details

Study ID
NCT03792321
Responsible party
Kristina Groti (Principal Investigator; MD, PhD, specialist in Internal medicine, University Medical Centre Ljubljana) — Principal investigator
First posted
Jan 3, 2019
Start date
Jan 10, 2014
Primary completion
Mar 5, 2015
Completion
Mar 5, 2018
Last update
Jan 4, 2019

Study contacts

Kristina Groti Antonic, MD, PhD
principal investigator · University Medical Centre Ljubljana

Oversight

Data monitoring committee
Yes
FDA-regulated drug
No
FDA-regulated device
No
View the source record on ClinicalTrials.gov ↗

Not currently enrolling

This study is completed, as verified in Jan 2019. You cannot join it, but the record below documents what was studied.

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Studies of the drug tested here: Testosterone undecanoate

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