E.1 Medical condition or disease under investigation |
E.1.1 | Medical condition(s) being investigated |
Female Sexual Arousal Disorder (FSAD) |
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MedDRA Classification |
E.1.2 Medical condition or disease under investigation |
E.1.2 | Classification code | 10062641 |
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E.1.3 | Condition being studied is a rare disease | No |
E.2 Objective of the trial |
E.2.1 | Main objective of the trial |
Part A: Primary:To investigate the reproducibility of the vaginal photoplethysmography (VPP) technique in healthy pre-menopausal female volunteers and pre-menopausal subjects suffering from FSAD. Part B: Primary: To investigate the effect of single doses of UK-447,841 on vaginal blood flow (VBF) as measured by VPP in pre-menopausal subjects suffering from FSAD. |
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E.2.2 | Secondary objectives of the trial |
Part A: To assess the degree of undesirable artefacts and fluctuations in the vaginal pulse amplitude (VPA) traces. To assess the variability of subjective feeling of arousal at baseline and during visual sexual stimulation (VSS). To investigate differences in VPA between healthy volunteers and subjects suffering from FSAD. Part B: To investigate the suitability of this technique in determining sensitivity to change on VBF following dosing with UK-447,841.To assess the correlation between changes in VPA and subjective feeling of arousal during sexual arousal.To investigate the safety and toleration of single oral doses of UK-447,841 in FSAD subjects.To determine plasma concentrations of UK-447,841 in FSAD subjects. To determine the effect of UK-447,841 on levels of plasma biomarkers such as VIP, ANP, big endothelin and cGMP. |
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E.2.3 | Trial contains a sub-study | Information not present in EudraCT |
E.3 | Principal inclusion criteria |
All subjects 1. Pre-menopausal female subjects aged 18-40. 2. Subjects must personally sign and date the informed consent documentation indicating that the subject (or a legally acceptable representative) has been informed of all pertinent aspects of the trial. 3. Subjects must have been in a stable heterosexual relationship for at least 3 months prior to study start and must remain in a stable relationship throughout the duration of the study. 4. Subjects must be willing and able to comply with scheduled visits, laboratory tests and other trial procedures.
FSAD subject group 5. Subjects must suffer from FSAD that has been present for at least 6 months prior to study entry which may or may not be associated with female orgasmic disorder and/or superficial/introital dyspareunia. |
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E.4 | Principal exclusion criteria |
All subjects 1. Subjects who are post-menopausal. Post-menopausal status is defined by a documented history of Naturally amenorrhoeic for > 1 year, or A six-month history of amenorrhoea and an FSH level of >50 IU/L and serum estradiol <20 pg/mL, or Bilateral oophorectomy or Subjects who are surgically menopausal. 2. Subjects who have an estradiol plasma concentration of less than 40pg/mL and a free plasma testosterone concentration <0.9pg/mL. Estradiol levels are only required in subjects not taking estrogen-containing oral contraception. 3. Subjects with a recent (past 6 months) history of alcohol or controlled substance abuse. 4. Subjects who have given birth in the previous 6 months, are pregnant, lactating or planning to become pregnant during this study. 5. Subjects with recent (past 3 months) exacerbation of pelvic inflammatory disease, a recent untreated vaginal infection, salpingitis, or other severe or chronic gynecologic disease. 6. Subjects who have had previous surgery to the vagina (including that for stress incontinence or vaginal hysterectomy) and those who have any anatomical abnormality of the vagina. 7. Subjects who have a history of gynaecological malignancy or those with recent abnormal cervical cytology suggestive of neoplastic changes. 8. Subjects who drink more than 21 units of alcohol per week. (1 unit = 285mls of beer or 25ml of spirits or 125ml of wine). 9. Subjects with a history of involuntary movement disorders. 10. Subjects with any clinically significant abnormality following review of pre-study laboratory data and full physical examination. 11. Subjects who, in the opinion of the PI, have any medical or psychological condition or social circumstances which would impair their ability to participate reliably in the study, or who may increase the risk to themselves or others by participating. 12. In the opinion of the investigator, a subject who is not likely to complete the study for what ever reason. FSAD subject group 13. Acceptable contraception includes, but is not limited to; oral contraceptives, IUDs, documented history of surgical sterilization, condoms or partner vasectomy. Unacceptable contraception includes, but is not limited to; withdrawal method, rhythm method or spermicides. (This criterion will only apply to subjects recruited for Part B of the study.) 14. Subjects who suffer from HSDD as determined by the SFQ and subsequent semi-structured interview. 15. Subjects whose sexual dysfunction is considered to be situational, i.e. limited to certain types of stimulation, situation or specific partners. 16. Subjects who have significant dyspareunia, which is due to an inflammatory or anatomical condition (e.g. pelvic inflammatory disease, vulvovestibulitis, fibroids). 17. Subjects who have received treatment for any major psychiatric disorder (e.g. psychosis or hospitalization due to major depression) within the past 12 months. Subjects on SSRIs (selective serotonin re-uptake inhibitors), SNRIs (selective noradrenaline reuptake inhibitors), Tricyclic antidepressants as well as buproprion. 18. Subjects who are currently receiving Hormone Replacement Treatment. 19. Subjects who are currently receiving medication known to interact with NEP-inhibitors such as ACE inhibitors. (This criterion will only apply to subjects recruited for Part B of the study.) 20. Subjects who suffers from hypo– or hypertension (treated as well as untreated) or have a resting supine blood pressure below 90/45mmHg or above 140/90 or who show a postural drop in either systolic blood pressure of >20mmHg and diastolic blood pressure of >10mmHg at screening. (This criterion will only apply to subjects recruited for Part B of the study.) 21. Subjects with any other major psychological or sexual disorder, not otherwise listed in the inclusion criteria, which is considered to be the primary diagnosis explaining the sexual dysfunction. 22. Subjects with otherwise treatable causes of FSAD including inadequately controlled diabetes, thyroid dysfunction or clinical significant hyperprolactinemia. 23. Subjects who currently participate in a structured psychosexual therapy program. 24. Subjects who have undergone major surgery in the past 6 months. 25. Subjects with any clinically significant abnormality from the screening physical examination. Healthy Volunteer group: 26. Subjects who are taking, or have taken, any prescribed or over the counter drug (with the exception of simple analgesics, oral contraceptives and simple vitamin and mineral supplements) in the three weeks prior to the first study period. Subjects who are taking other concomitant therapies than these may be enrolled, but this must be discussed and agreed with Pfizer prior to enrollment. 27. Subjects with evidence of a female sexual disorder as determined by the Female SFQ. |
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E.5 End points |
E.5.1 | Primary end point(s) |
Part A: VPA mean change from baseline to mean VSS as measured by VPP. VPA mean change from baseline to maximum level during VSS as measured by VPP.
Part B: VPA mean change from pre-dose baseline to mean VSS as measured by VPP. VPA mean change from pre-dose baseline to maximum level during VSS as measured by VPP. |
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E.6 and E.7 Scope of the trial |
E.6 | Scope of the trial |
E.6.1 | Diagnosis | No |
E.6.2 | Prophylaxis | No |
E.6.3 | Therapy | No |
E.6.4 | Safety | Yes |
E.6.5 | Efficacy | Yes |
E.6.6 | Pharmacokinetic | Yes |
E.6.7 | Pharmacodynamic | Yes |
E.6.8 | Bioequivalence | No |
E.6.9 | Dose response | No |
E.6.10 | Pharmacogenetic | Information not present in EudraCT |
E.6.11 | Pharmacogenomic | No |
E.6.12 | Pharmacoeconomic | No |
E.6.13 | Others | No |
E.7 | Trial type and phase |
E.7.1 | Human pharmacology (Phase I) | No |
E.7.1.1 | First administration to humans | No |
E.7.1.2 | Bioequivalence study | No |
E.7.1.3 | Other | No |
E.7.1.3.1 | Other trial type description | |
E.7.2 | Therapeutic exploratory (Phase II) | Yes |
E.7.3 | Therapeutic confirmatory (Phase III) | No |
E.7.4 | Therapeutic use (Phase IV) | No |
E.8 Design of the trial |
E.8.1 | Controlled | Yes |
E.8.1.1 | Randomised | Yes |
E.8.1.2 | Open | No |
E.8.1.3 | Single blind | No |
E.8.1.4 | Double blind | Yes |
E.8.1.5 | Parallel group | No |
E.8.1.6 | Cross over | Yes |
E.8.1.7 | Other | No |
E.8.2 | Comparator of controlled trial |
E.8.2.1 | Other medicinal product(s) | No |
E.8.2.2 | Placebo | Yes |
E.8.2.3 | Other | No |
E.8.3 |
The trial involves single site in the Member State concerned
| No |
E.8.4 | The trial involves multiple sites in the Member State concerned | Yes |
E.8.5 | The trial involves multiple Member States | Yes |
E.8.6 Trial involving sites outside the EEA |
E.8.6.1 | Trial being conducted both within and outside the EEA | Yes |
E.8.6.2 | Trial being conducted completely outside of the EEA | Information not present in EudraCT |
E.8.6.3 | If E.8.6.1 or E.8.6.2 are Yes, specify the regions in which trial sites are planned |
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E.8.7 | Trial has a data monitoring committee | Information not present in EudraCT |
E.8.8 |
Definition of the end of the trial and justification where it is not the last
visit of the last subject undergoing the trial
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E.8.9 Initial estimate of the duration of the trial |
E.8.9.1 | In the Member State concerned years | 1 |
E.8.9.1 | In the Member State concerned months | 4 |
E.8.9.1 | In the Member State concerned days | |
E.8.9.2 | In all countries concerned by the trial years | 1 |
E.8.9.2 | In all countries concerned by the trial months | 4 |