Investigating the effects of kisspeptin in postmenopausal women with low sexual desire
| ISRCTN | ISRCTN10669888 |
|---|---|
| DOI | https://doi.org/10.1186/ISRCTN10669888 |
| ClinicalTrials.gov (NCT) | Nil known |
| Clinical Trials Information System (CTIS) | Nil known |
| Integrated Research Application System (IRAS) | 326800 |
| Protocol serial number | 23HH8444 Version 3, IRAS 326800, CPMS 58453 |
| Sponsor | Imperial College London |
| Funder | NIHR Imperial Biomedical Research Centre |
- Submission date
- 18/12/2023
- Registration date
- 19/12/2023
- Last edited
- 17/09/2025
- Recruitment status
- No longer recruiting
- Overall study status
- Completed
- Condition category
- Nutritional, Metabolic, Endocrine
Plain English summary of protocol
Background and study aims
Hypoactive Sexual Desire Disorder (HSDD) is characterised by a lack or absence of sexual fantasies and a desire for sexual activity. Studies estimate that HSDD affects 9-26% of postmenopausal women with marked emotional and psychological distress. However, despite the high clinical and psychological burden, there are limited treatment options available. The naturally-occurring reproductive hormone kisspeptin may represent a safe pharmacological option given two recently published studies showing that administration safely enhances sexual desire and arousal in premenopausal women and men with HSDD. However, kisspeptin’s effects in postmenopausal women with low sexual desire remain to be studied.
Who can participate?
Women aged ≥40 years old who are postmenopausal, right-handed, heterosexual, with HSDD (≥6-months duration) and are receiving systemic Hormone Replacement Therapy (stable dose for at least 6-months before screening to maintain that regimen).
What does the study involve?
Interested participants who meet the inclusion criteria will be asked to complete a three-stage recruitment process (i. self-reported questionnaire, ii. telephone screening, iii. face-to-face appointment) to confirm eligibility. The study consists of an initial screening visit followed by 2-weekday 4-hour visits. You will receive an injection of a natural and safe hormone (called Kisspeptin), give blood samples, answer some questionnaires and have an MRI scan with physiological monitoring (no radiation).
What are the possible benefits and risks of participating?
Despite the significant burden of HSDD in postmenopausal women, medical and psychological treatments have shown only modest benefit. This indicates a need to better understand the underlying sexual and emotional brain activity in HSDD (to help develop more effective treatments), which this study will help address. Whilst kisspeptin is a naturally occurring hormone, which has been given safely to > 500 men and women without side effects (by our group and others), a team of senior doctors will supervise visits with appropriate safety monitoring.
Where is the study run from?
Imperial College London (UK)
When is the study starting and how long is it expected to run for?
August 2023 to September 2025
Who is funding the study?
NIHR Biomedical Research Centre at Imperial College London (UK)
Who is the main contact?
Professor Waljit Dhillo, Professor Alexander Comninos and Dr Edouard Mills. The team can be contacted at Imperial.FemaleHSDD@nhs.net
Contact information
Scientific, Principal investigator
6th Floor Commonwealth Building
Imperial College London
Hammersmith Campus
Du Cane Road
London
W12 0NN
United Kingdom
 ORCID ID |
0000-0001-5950-4316 |
|---|---|
| Phone | +44 (0)207 594 3487 |
| w.dhillo@imperial.ac.uk |
Scientific, Principal investigator
6th Floor Commonwealth Building
Imperial College London
Hammersmith Campus
Du Cane Road
London
W12 0NN
United Kingdom
| ORCID ID |
0000-0002-7104-2297 |
|---|---|
| Phone | +44 (0)207 594 3487 |
| a.comninos@imperial.ac.uk |
Public
6th Floor Commonwealth Building
Imperial College London
Hammersmith Campus
Du Cane Road
London
W12 0NN
United Kingdom
| ORCID ID |
0000-0002-8937-6463 |
|---|---|
| Phone | +44 (0)207 594 3487 |
| e.mills@imperial.ac.uk |
Study information
| Primary study design | Interventional |
|---|---|
| Study design | Randomized double-blind placebo-controlled two-way crossover study |
| Secondary study design | Randomised controlled trial |
| Participant information sheet | 44769_PIS_v3.0_04Oct2023.pdf |
| Scientific title | Investigating the effects of kisspeptin in postmenopausal women with hypoactive sexual desire disorder |
| Study objectives | Kisspeptin administration to women with Hypoactive Sexual Desire Disorder (HSDD) modulates sexual brain processing and associated behavioural and physiological measures of sexual desire and arousal in response to visual erotic stimuli, compared to placebo. |
| Ethics approval(s) |
Approved 11/10/2023, London - Westminster Research Ethics Committee (2 Redman Place, Stratford, London, E20 1JQ, United Kingdom; +44 (0)207 104 8066; westminster.rec@hra.nhs.uk), ref: 23/LO/0763 |
| Health condition(s) or problem(s) studied | Postmenopausal women with distressing low sexual desire caused by Hypoactive Sexual Desire Disorder, according to the International Classification of Diseases 11th Revision (ICD-11), including categorisation as both acquired (versus lifelong) and generalised (versus situational). |
| Intervention | Participants will attend two study visits each for subcutaneous administration of kisspeptin (12.8 nmol/kg) and placebo (using 0.9% saline; identical in volume and appearance to kisspeptin). Study visits will be scheduled at least 1 month apart. The study will explore changes in: 1. Brain activity, as determined by functional MRI (fMRI) in response to visual erotic stimuli 2. Peripheral physiological sexual arousal (determined by infrared thermography) 3. Behavioural measures of sexual desire and arousal. The order of the interventions will be randomised (with the randomisation list created by an independent statistician) and counterbalanced. Participants, radiographers/study doctors interacting with the participant and data analysts will be blinded to the identity of the intervention. |
| Intervention type | Biological/Vaccine |
| Phase | Not Applicable |
| Drug / device / biological / vaccine name(s) | Kisspeptin |
| Primary outcome measure(s) |
Change in brain activity measured using fMRI blood oxygen level-dependent (BOLD) activity in response to visual erotic stimuli at the study visits when participants are administered kisspeptin compared to placebo |
| Key secondary outcome measure(s) |
The following secondary outcome measures are assessed at study visits when participants are administered kisspeptin compared to placebo: |
| Completion date | 29/09/2025 |
Eligibility
| Participant type(s) | Patient |
|---|---|
| Age group | Adult |
| Lower age limit | 40 Years |
| Sex | Female |
| Target sample size at registration | 38 |
| Total final enrolment | 44 |
| Key inclusion criteria | 1. Women ≥40 years old 2. Postmenopausal (i.e., no spontaneous period for > 1 year) caused by natural menopause 3. Heterosexual 4. Right-hand dominant 5. Body mass index (BMI) 18-30 kg/m2 6. Currently in a relationship and the relationship has been stable for at least 6 months before screening 7. The participant’s partner must be sexually functional without erectile dysfunction or premature ejaculation 8. In the subject’s opinion, previously experienced “normal sexual function,” defined as a normal level of desire at some point in the past 9. Hypoactive Sexual Desire Disorder according to the International Classification of Diseases 11th Revision (ICD-11), including categorisation as both acquired (versus lifelong) and generalised (versus situational) 10. All of the following at Screening: 10.1. Patient Health Questionnaire (PHQ-9) total score is <5, and score for Question 9 is 0 10.2. Generalised Anxiety Disorder (GAD-7) total score is <5 10.3. Either Female Sexual Function Index (FSFI) total score ≤26 if diagnosed with HSDD (with or without symptoms of decreased arousal) or subjects diagnosed with HSDD only (without symptoms of decreased arousal), FSFI desire domain score of ≤5 (regardless of total FSFI score) 10.4. Female Sexual Distress Scale - Desire/Arousal/Orgasm (FSDS-DAO) total score is >18 11. Receiving systemic Hormone Replacement Therapy (HRT) and be on a stable dose for at least 6-months prior to screening with the intention of maintaining that regimen during the study 12. Prior experience in viewing sexually explicit material 13. Participants must be able to provide full informed consent. We will make every reasonable effort to accommodate a participant who does not speak English as their first language, such as using an interpreter. However, where there is doubt as to whether the potential participant can fully understand the study, we will not be able to include them as their consent would not be fully informed and there may be difficulty in performing the tasks required for the study which would impact the data collected and hence the robustness of the study |
| Key exclusion criteria | 1. History of any medical, psychological, or other condition, or use of any medications, including over-the-counter products, which, in the opinion of the investigators, would either interfere with the study or potentially cause harm to the participant. 2. Medical or psychological conditions that would impair their ability to participate reliably in the study or give informed consent. 3. History of major haematological, renal, thyroid, or hepatic abnormalities or significant cardiovascular disease. 4. History of significant pelvic surgery (including hysterectomy). 5. History of cancer. 6. History of unresolved sexual trauma/abuse 7. Diagnosis of another sexual disorder. 8. Receiving any other treatment for HSDD (beyond HRT) at the time of screening, such as testosterone therapy. 9. Any implanted material in the body that would preclude magnetic resonance imaging (MRI) for safety reasons. 10. Inability to tolerate MRI scanning (e.g., claustrophobia or inability to lie flat). 11. Impaired vision which would preclude the ability to view erotic material. 12. Without access at home to a telephone, or other factor likely to interfere with ability to participate reliably in the study. 13. History of hypersensitivity to any of the components administered. 14. Participation in any research study within the preceding 30 days (or 2 months if an investigational drug was administered). 15. Those who have or intend to donate blood or blood products within three months before or following study completion. |
| Date of first enrolment | 15/01/2024 |
| Date of final enrolment | 19/06/2025 |
Locations
Countries of recruitment
- United Kingdom
- England
Study participating centre
Du Cane Road
London
W12 0NN
United Kingdom
Results and Publications
| Individual participant data (IPD) Intention to share | Yes |
|---|---|
| IPD sharing plan summary | Published as a supplement to the results publication |
| IPD sharing plan | All data generated or analysed during this study will be included in the subsequent results publication. |
Study outputs
| Output type | Details | Date created | Date added | Peer reviewed? | Patient-facing? |
|---|---|---|---|---|---|
| Participant information sheet | version 3.0 | 04/10/2023 | 19/12/2023 | No | Yes |
| Participant information sheet | Participant information sheet | 11/11/2025 | 11/11/2025 | No | Yes |
| Study website | Study website | 11/11/2025 | 11/11/2025 | No | Yes |
Additional files
- 44769_PIS_v3.0_04Oct2023.pdf
- Participant information sheet
Editorial Notes
17/09/2025: The following changes were made to the trial record:
1. The date of final enrolment was changed from 11/08/2025 to 19/06/2025.
2. The total final enrolment was added.
18/08/2025: The completion date was changed from 25/08/2025 to 29/09/2025.
16/07/2025: The following changes were made to the trial record:
1. The date of final enrolment was changed from 21/07/2025 to 11/08/2025.
2. The completion date was changed from 04/08/2025 to 25/08/2025.
3. The plain English summary was updated to reflect these changes.
18/06/2025: The following changes were made to the trial record:
1. The recruitment end date was changed from 02/06/2025 to 21/07/2025.
2. The overall end date was changed from 03/08/2026 to 04/08/2025.
3. The plain English summary was updated to reflect these changes.
23/01/2025: The following changes were made to the study record:
1. The recruitment end date was changed from 15/01/2025 to 02/06/2025.
2. The intention to publish date was changed from 01/08/2025 to 01/10/2025.
09/01/2024: Internal review.
19/12/2023: Study's existence confirmed by the HRA and Health and Care Research Wales (HCRW).
