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Testosterone Treatment in a Patient With 17β-hydroxysteroid Dehydrogenase Type 3 Deficiency: an N-of-1 Study (N-of-1 DSD)

Primary Purpose

Disorder of Sex Development, 46,XY

Status
Unknown status
Phase
Phase 3
Locations
Netherlands
Study Type
Interventional
Intervention
Testosterone gel
Placebo
Sponsored by
Erasmus Medical Center
About
Eligibility
Locations
Arms
Outcomes
Full info

About this trial

This is an interventional treatment trial for Disorder of Sex Development, 46,XY focused on measuring 17-beta-hydroxysteroid dehydrogenase type 3 deficiency

Eligibility Criteria

38 Years - undefined (Adult, Older Adult)FemaleDoes not accept healthy volunteers

Inclusion Criteria:

- N/A

Exclusion Criteria:

- N/A

The study is especially designed for a specific female patient. The patient is 38 years old at the moment. Since the study is especially designed for this patient, there are no formal inclusion and exclusion criteria.

Sites / Locations

  • Erasmus MC

Arms of the Study

Arm 1

Arm 2

Arm Type

Experimental

Placebo Comparator

Arm Label

Testosterone

Placebo

Arm Description

Testosterone gel (20 mg/day) for 8 weeks per period.

Placebo gel (20 mg/day) for 8 weeks per period.

Outcomes

Primary Outcome Measures

Fatigue (Checklist of Individual Strength)
Fatigue is measured with the Checklist of Individual Strength (CIS-20). The CIS-20 consists of 20 questions. The score ranges from 20 - 140. A score of 27-35 means increased fatigue. A score >35 means extreme fatigue.

Secondary Outcome Measures

Quality of Life (5-level EQ-5D)
Quality of life is measured with the 5-level EQ-5D (EQ-5D-L5). The range of the EQ-5D-5L is from 0 to 100. A higher score means a better outcome.
Laboratory levels
The following laboratory levels will be measured: Testosterone (nmol/L) Dehydroepiandorosterone (DHEA) (micromol/L) Estradiol (pg/mL) Hematocrit (%)
Bone density
Dual Energy X-ray Absorptiometry scan will be performed to measure bone density.
Goal attainment scaling
GAS is an individualized outcome measure in which several personal goals and the corresponding scaling are defined in consultation with the patient. The scaling is standardized, which makes it possible to reliably measure the change in the situation of the patient. The levels range from -3 to +2. A higher level means a better outcome. The predefined personal goals are a measure of the effectivity of the treatment. If possible, three goals will be set.
Number of adverse events
All adverse events that occur from start of treatment until 30 days after last administration will be described to assess the safety of testosterone treatment. Adverse events are defined as any undesirable experience occurring during the study, whether or not considered related to testosterone treatment

Full Information

First Posted
March 26, 2021
Last Updated
April 2, 2021
Sponsor
Erasmus Medical Center
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1. Study Identification

Unique Protocol Identification Number
NCT04831099
Brief Title
Testosterone Treatment in a Patient With 17β-hydroxysteroid Dehydrogenase Type 3 Deficiency: an N-of-1 Study
Acronym
N-of-1 DSD
Official Title
Testosterone Treatment in a Patient With 17β-hydroxysteroid Dehydrogenase Type 3 Deficiency: an N-of-1 Study
Study Type
Interventional

2. Study Status

Record Verification Date
April 2021
Overall Recruitment Status
Unknown status
Study Start Date
June 1, 2021 (Anticipated)
Primary Completion Date
July 26, 2022 (Anticipated)
Study Completion Date
July 26, 2022 (Anticipated)

3. Sponsor/Collaborators

Responsible Party, by Official Title
Principal Investigator
Name of the Sponsor
Erasmus Medical Center

4. Oversight

Studies a U.S. FDA-regulated Drug Product
No
Studies a U.S. FDA-regulated Device Product
No
Data Monitoring Committee
No

5. Study Description

Brief Summary
A 38-year old women with a 46,XY disorder of sex development (DSD) based on a 17β-hydroxysteroid dehydrogenase type 3 deficiency (17β-HSD3) was seen at the department of Internal Medicine-Endocrinology at the Erasmus MC, Rotterdam, the Netherlands. The patient presented with fatigue, concentration problems and feelings of restlessness. In the past, the patient had undergone a gonadectomy at 9 months of age. In a follow-up visit at the outpatient clinic, the patient mentioned that friends with DSD had successfully been treated with testosterone and the patient requested testosterone treatment for her complaints. In the literature, nothing is known about the usefulness of testosterone treatment for women with 17β-HSD3. For other forms of 46,XY DSD like complete androgen insensitivity syndrome (CAIS), limited data are available about testosterone treatment. Two studies have compared the effects of estrogen and testosterone replacement therapy on psychological wellbeing, quality of life (QoL) and sexual function in women with CAIS. The results were not conclusive, as one of them found a positive effect of testosterone replacement therapy on sexual function compared to estrogen, whereas the other study found no differences. In order to evaluate the effect of testosterone treatment independent of a possible placebo effect, the usefulness of testosterone treatment in this individual patient with 17β-HSD3 will be investigated in an N-of-1 trial in order to improve the clinical care for this patient. The primary objective is to determine the efficacy of testosterone treatment for fatigue on an individual level in a patient with 17β-HSD3 as assessed with the Checklist Individual Strength (CIS-20).
Detailed Description
A 38-year old women with a 46,XY disorder of sex development (DSD) based on a 17β-hydroxysteroid dehydrogenase type 3 deficiency (17β-HSD3) was seen at the department of Internal Medicine-Endocrinology at the Erasmus MC, Rotterdam, the Netherlands. 17β-HSD3 is a rare disorder characterized by a (despite the presence of a Y chromosome) female habitus in almost all newborns, with congenital agenesis of the uterus and ovaries. During puberty, patients with 17β-HSD3 often develop secondary male characteristics, such as deepening of the voice, male pattern body hair, and clitoromegaly. The patient presented with fatigue, concentration problems and feelings of restlessness. In the past, the patient had undergone a gonadectomy at 9 months of age. In a follow-up visit at the outpatient clinic, the patient mentioned that friends with DSD had successfully been treated with testosterone and the patient requested testosterone treatment for her complaints. The patient was aware of the fact that the positive effect noticed by the patients' friends could be (partly) explained by placebo effect. In the literature, nothing is known about the usefulness of testosterone treatment for women with 17β-HSD3. For other forms of 46,XY DSD like complete androgen insensitivity syndrome (CAIS), limited data are available about testosterone treatment. Two studies have compared the effects of estrogen and testosterone replacement therapy on psychological wellbeing, quality of life (QoL) and sexual function in women with CAIS. The results were not conclusive, as one of them found a positive effect of testosterone replacement therapy on sexual function compared to estrogen, whereas the other study found no differences. In order to evaluate the effect of testosterone treatment independent of a possible placebo effect, the usefulness of testosterone treatment in this individual patient with 17β-HSD3 will be investigated in an N-of-1 trial in order to improve the clinical care for this patient. The primary objective is to determine the efficacy of testosterone treatment for fatigue on an individual level in a patient with 17β-HSD3 as assessed with the Checklist Individual Strength (CIS-20). Secondary objectives are to determine the effect of testosterone treatment on the QoL (5-level EQ-5D), testosterone, dehydroepiandorosterone (DHEA), and estradiol levels, on bone density, and on specific personalized goals that are important to the patient and her environment (Goal Attainment Scaling). To monitor the safety of testosterone treatment, hematocrit levels will be measured and the occurrence of adverse events will be evaluated.

6. Conditions and Keywords

Primary Disease or Condition Being Studied in the Trial, or the Focus of the Study
Disorder of Sex Development, 46,XY
Keywords
17-beta-hydroxysteroid dehydrogenase type 3 deficiency

7. Study Design

Primary Purpose
Treatment
Study Phase
Phase 3
Interventional Study Model
Crossover Assignment
Model Description
N-of-1 study: cross-over study in 1 patient with 2 cycles that each consists of 2 periods (one period of placebo and one period of active treatment).
Masking
ParticipantCare ProviderInvestigatorOutcomes Assessor
Masking Description
The participant and investigator are blinded. The investigator is also the care provider and investigator.
Allocation
Randomized
Enrollment
1 (Anticipated)

8. Arms, Groups, and Interventions

Arm Title
Testosterone
Arm Type
Experimental
Arm Description
Testosterone gel (20 mg/day) for 8 weeks per period.
Arm Title
Placebo
Arm Type
Placebo Comparator
Arm Description
Placebo gel (20 mg/day) for 8 weeks per period.
Intervention Type
Drug
Intervention Name(s)
Testosterone gel
Other Intervention Name(s)
AndroGel
Intervention Description
The route of administration is transdermal.
Intervention Type
Drug
Intervention Name(s)
Placebo
Intervention Description
The route of administration is transdermal
Primary Outcome Measure Information:
Title
Fatigue (Checklist of Individual Strength)
Description
Fatigue is measured with the Checklist of Individual Strength (CIS-20). The CIS-20 consists of 20 questions. The score ranges from 20 - 140. A score of 27-35 means increased fatigue. A score >35 means extreme fatigue.
Time Frame
Baseline to 420 days
Secondary Outcome Measure Information:
Title
Quality of Life (5-level EQ-5D)
Description
Quality of life is measured with the 5-level EQ-5D (EQ-5D-L5). The range of the EQ-5D-5L is from 0 to 100. A higher score means a better outcome.
Time Frame
Baseline to 420 days
Title
Laboratory levels
Description
The following laboratory levels will be measured: Testosterone (nmol/L) Dehydroepiandorosterone (DHEA) (micromol/L) Estradiol (pg/mL) Hematocrit (%)
Time Frame
Baseline to 420 days
Title
Bone density
Description
Dual Energy X-ray Absorptiometry scan will be performed to measure bone density.
Time Frame
Baseline to 420 days
Title
Goal attainment scaling
Description
GAS is an individualized outcome measure in which several personal goals and the corresponding scaling are defined in consultation with the patient. The scaling is standardized, which makes it possible to reliably measure the change in the situation of the patient. The levels range from -3 to +2. A higher level means a better outcome. The predefined personal goals are a measure of the effectivity of the treatment. If possible, three goals will be set.
Time Frame
Baseline to 420 days
Title
Number of adverse events
Description
All adverse events that occur from start of treatment until 30 days after last administration will be described to assess the safety of testosterone treatment. Adverse events are defined as any undesirable experience occurring during the study, whether or not considered related to testosterone treatment
Time Frame
Baseline to 450 days

10. Eligibility

Sex
Female
Minimum Age & Unit of Time
38 Years
Accepts Healthy Volunteers
No
Eligibility Criteria
Inclusion Criteria: - N/A Exclusion Criteria: - N/A The study is especially designed for a specific female patient. The patient is 38 years old at the moment. Since the study is especially designed for this patient, there are no formal inclusion and exclusion criteria.
Central Contact Person:
First Name & Middle Initial & Last Name or Official Title & Degree
Laura de Graaff, MD, PhD
Phone
+31618843010
Email
l.degraaff@erasmusmc.nl
Overall Study Officials:
First Name & Middle Initial & Last Name & Degree
Laura de Graaff, MD, PhD
Organizational Affiliation
Department of Internal Medicine - Endocrinology, Erasmus MC, Rotterdam, the Netherlands
Official's Role
Principal Investigator
Facility Information:
Facility Name
Erasmus MC
City
Rotterdam
State/Province
Zuid-Holland
ZIP/Postal Code
3015GD
Country
Netherlands
Facility Contact:
First Name & Middle Initial & Last Name & Degree
Laura de Graaff, MD, PhD
Phone
+31618843010
Email
l.degraaff@erasmusmc.nl
First Name & Middle Initial & Last Name & Degree
Laura de Graaff, MD, PhD

12. IPD Sharing Statement

Plan to Share IPD
Yes
IPD Sharing Plan Description
Individual participant data is available upon reasonable request.
IPD Sharing Time Frame
The data will become available after completion of the study and only upon reasonable request and with permission of the participant.
IPD Sharing Access Criteria
A motivated request.

Learn more about this trial

Testosterone Treatment in a Patient With 17β-hydroxysteroid Dehydrogenase Type 3 Deficiency: an N-of-1 Study

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