Effect of Vortioxetine, Paroxetine, and Placebo on Sexual Functioning in Healthy Volunteers

Study Overview
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Brief Summary
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The purpose of this study is to evaluate the effect of vortioxetine (10 and 20 mg, once daily) versus paroxetine (20 mg, once daily) on sexual functioning in healthy participants after 5 weeks of double-blind treatment.

Detailed Description
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The drug being tested in this study is called vortioxetine. This study will look at the effect of treatment on sexual functioning in healthy participants. The study will enroll approximately 352 participants. Participants will be randomly assigned (by chance, like flipping a coin) to one of the four treatment groups-which will remain undisclosed to the patient and study doctor during the study (unless there is an urgent medical need): Vortioxetine 10 mg Vortioxetine 20 mg Paroxetine 20 mg Placebo (dummy inactive pill) - this is a capsule that looks like the study drug but has no active ingredient All participants will be asked to take one tablet/capsule, daily, orally for up to 5 weeks. This multicenter trial will be conducted in United States. The overall time to participate in this study is approximately 7 weeks. Participants will be contacted by telephone 2 weeks after last dose of study drug for a follow-up assessment.

Official Title
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A Randomized, Double-Blind, Parallel Group, Placebo- and Active-Controlled, Phase 4 Study Evaluating the Effect of Vortioxetine 10 and 20 mg/Day vs Paroxetine 20 mg/Day on Sexual Functioning in Healthy Subjects

Conditions
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Healthy Volunteers

Intervention / Treatment
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* Drug: Vortioxetine
* Drug: Paroxetine
* Drug: Placebo


Participation Criteria
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Eligibility Criteria
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Inclusion Criteria: Is sexually active and has been in a steady relationship and plans to remain in that relationship for the duration of the study. Has a body mass index (BMI) of 18 to 35 kg/m^2, inclusive, at the Screening and Baseline Visits. If female, has a regular menstrual cycle. Has normal sexual functioning, as defined by a Changes in Sexual Functioning Questionnaire (CSFQ-14) total score >47 (men) or >41 (women) at the Screening and Baseline Visits. If females, taking allowed hormonal contraceptives is on a stable dose for ≥3 months prior to the Baseline Visit and continues on the stable dose for the duration of the study. Exclusion Criteria: Has received vortioxetine and/or paroxetine in a previous clinical study or as a therapeutic agent. Is positive for hepatitis B surface antigen (HBsAg), anti-hepatitis C virus (HCV) antibodies, or human immunodeficiency virus (HIV) at the Screening Visit or has any known sexually transmitted diseases. Has glycosylated hemoglobin (HbA1c) ≥7% at the Screening Visit. Has a clinically significant abnormal electrocardiogram (ECG) at the Screening Visit. Has a known history of or currently has increased intraocular pressure or is at risk of acute narrow-angle glaucoma. Has a history of depression or any other psychiatric illness. Has a significant risk of suicide according to the investigator's clinical judgment, or has made a suicide attempt in the previous 6 months. Has current sexual dysfunction, or a history of a diagnosis or treatment of sexual dysfunction. Has had a surgical or medical procedure on reproductive/genitourinary organs (excluding uncomplicated vasectomy and tubal ligation). If female, has polycystic ovarian syndrome. Has hypogonadism or has a free testosterone value outside the normal range at the Screening Visit that is indicative of hypogonadism. Has a thyroid-stimulating hormone (TSH) value outside the normal range at the Screening Visit that is deemed clinically significant by the investigator.

Ages Eligible for Study
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Minimum Age: 18 Years
Maximum Age: 40 Years

Sexes Eligible for Study
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All

Accepts Healthy Volunteers
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Accepts Healthy Volunteers

Study Plan
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How is the study designed?
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Design Details

Primary Purpose: Treatment
Allocation: Randomized
Intervention Model: Parallel Assignment
Masking: Quadruple


Arms and Interventions

| Participant Group/Arm | Intervention/Treatment |
| --- | --- |
| Experimental: Vortioxetine 10 mg<br>Vortioxetine 10 mg, overencapsulated tablets, orally, once daily for up to 5 weeks. | Drug: Vortioxetine<br>* Vortioxetine Overencapsulated Tablet<br>|
| Experimental: Vortioxetine 20 mg<br>Vortioxetine 10 mg, overencapsulated tablets, orally, once daily for up to 1 week followed by vortioxetine 20 mg, overencapsulated tablets, orally, once daily from Week 2, up to 4 weeks. | Drug: Vortioxetine<br>* Vortioxetine Overencapsulated Tablet<br>|
| Active Comparator: Paroxetine 20 mg<br>Paroxetine 20 mg, overencapsulated tablets, orally, once daily for up to 5 weeks. | Drug: Paroxetine<br>* Paroxetine Overencapsulated Tablets.<br>|
| Placebo Comparator: Placebo<br>Vortioxetine placebo matching-capsules, orally, once daily for up to 5 weeks. | Drug: Placebo<br>* Vortioxetine Placebo-matching Capsules.<br>|

What is the study measuring?
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Primary Outcome Measures

| Outcome Measure | Measure Description | Time Frame |
| --- | --- | --- |
| Change From Baseline in the Changes in Sexual Functioning Questionnaire (CSFQ-14) Total Score Difference for Vortioxetine Versus Paroxetine at Week 5 in Full Analysis Set (FAS) | The CSFQ-14 is a structured, self-reported questionnaire designed to measure illness- and medication-related changes in sexual functioning consisting of 14 items that measure sexual functioning as a total score (14 items) and on the subscales of pleasure (1 item), desire/frequency (2 items), desire/interest (3 items), arousal (3 items), orgasm (3 items) and 2 additional items are included in the total score, but do not map to a specific phase of the sexual response cycle, rated on a 5-point scale from 1 to 5 with a total score range from 14 to 70. Higher scores reflect higher sexual functioning. A negative change from baseline indicates that symptoms have worsened. | Baseline and Week 5 | 
| Change From Baseline in the CSFQ-14 Total Score Difference for Vortioxetine Versus Paroxetine at Week 5 in Modified Full Analysis Set 1 (mFAS1) | The CSFQ-14 is a structured, self-reported questionnaire designed to measure illness- and medication-related changes in sexual functioning consisting of 14 items that measure sexual functioning as a total score (14 items) and on the subscales of pleasure (1 item), desire/frequency (2 items), desire/interest (3 items), arousal (3 items), orgasm (3 items) and 2 additional items are included in the total score, but do not map to a specific phase of the sexual response cycle, rated on a 5-point scale from 1 to 5 with a total score range from 14 to 70. Higher scores reflect higher sexual functioning. A negative change from baseline indicates that symptoms have worsened. | Baseline and Week 5 | 
| Change From Baseline in the CSFQ-14 Total Score Difference for Vortioxetine Versus Paroxetine at Week 5 in Modified Full Analysis Set 2 (mFAS2) | The CSFQ-14 is a structured, self-reported questionnaire designed to measure illness- and medication-related changes in sexual functioning consisting of 14 items that measure sexual functioning as a total score (14 items) and on the subscales of pleasure (1 item), desire/frequency (2 items), desire/interest (3 items), arousal (3 items), orgasm (3 items) and 2 additional items are included in the total score, but do not map to a specific phase of the sexual response cycle, rated on a 5-point scale from 1 to 5 with a total score range from 14 to 70. Higher scores reflect higher sexual functioning. A negative change from baseline indicates that symptoms have worsened. | Baseline and Week 5 | 

Secondary Outcome Measures

| Outcome Measure | Measure Description | Time Frame |
| --- | --- | --- |
| Change From Baseline in the CSFQ-14 Total Score Difference for Vortioxetine Versus Paroxetine at Weeks 1, 2, 3 and 4 | The CSFQ-14 is a structured, self-reported questionnaire designed to measure illness- and medication-related changes in sexual functioning consisting of 14 items that measure sexual functioning as a total score (14 items) and on the subscales of pleasure (1 item), desire/frequency (2 items), desire/interest (3 items), arousal (3 items), orgasm (3 items) and 2 additional items are included in the total score, but do not map to a specific phase of the sexual response cycle, rated on a 5-point scale from 1 to 5 with a total score range from 14 to 70. Higher scores reflect higher sexual functioning. A negative change from baseline indicates that symptoms have worsened. | Baseline and Weeks 1, 2, 3 and 4 | 
| Change From Baseline in CSFQ-14 Total Score Difference for Paroxetine Versus Placebo at Weeks 1, 2, 3, 4 and 5 | The CSFQ-14 is a structured, self-reported questionnaire designed to measure illness- and medication-related changes in sexual functioning consisting of 14 items that measure sexual functioning as a total score (14 items) and on the subscales of pleasure (1 item), desire/frequency (2 items), desire/interest (3 items), arousal (3 items), orgasm (3 items) and 2 additional items are included in the total score, but do not map to a specific phase of the sexual response cycle, rated on a 5-point scale from 1 to 5 with a total score range from 14 to 70. Higher scores reflect higher sexual functioning. A negative change from baseline indicates that symptoms have worsened. | Baseline and Weeks 1, 2, 3, 4 and 5 | 
| Change From Baseline in CSFQ-14 Total Score Difference for Vortioxetine Versus Placebo at Weeks 1, 2, 3, 4 and 5 | The CSFQ-14 is a structured, self-reported questionnaire designed to measure illness- and medication-related changes in sexual functioning consisting of 14 items that measure sexual functioning as a total score (14 items) and on the subscales of pleasure (1 item), desire/frequency (2 items), desire/interest (3 items), arousal (3 items), orgasm (3 items) and 2 additional items are included in the total score, but do not map to a specific phase of the sexual response cycle, rated on a 5-point scale from 1 to 5 with a total score range from 14 to 70. Higher scores reflect higher sexual functioning. A negative change from baseline indicates that symptoms have worsened. | Baseline and Weeks 1, 2, 3, 4 and 5 | 
| Percentage of Participants Meeting Criteria for Sexual Dysfunction at Weeks 1, 2, 3, 4 and 5 | Sexual dysfunction is defined as CSFQ-14 score ≤47 for men and ≤41 for women. | Weeks 1, 2, 3, 4 and 5 | 
| Change From Baseline in CSFQ-14 Subscales 5 Dimensions at Weeks 1, 2, 3, 4 and 5 | The CSFQ-14 is a structured, self-reported questionnaire designed to measure illness- and medication-related changes in sexual functioning consisting of 14 items that measure sexual functioning on the subscales of pleasure (1 item, score range 1-5), desire/frequency (2 items, score range 2-10), desire/interest (3 items, score range 3-15), arousal (3 items, score range 3-15), and orgasm (3 items, score range 3-15), rated on a 5-point scale from 1 to 5. Higher scores reflect higher sexual functioning. A negative change from baseline indicates that symptoms have worsened. | Baseline and Weeks 1, 2, 3, 4 and 5 | 
| Change From Baseline in CSFQ-14 3 Phases of the Sexual Response Cycle (Desire, Arousal, and Orgasm/Completion) at Weeks 1, 2, 3, 4 and 5 | The CSFQ-14 is a structured, self-reported questionnaire designed to measure illness- and medication-related changes in sexual functioning consisting of 14 items that measure sexual functioning on the 3 phases of the sexual response cycle , desire (5 items, score range 5-25), arousal (3 items, score range 3-15), and orgasm (3 items, score range 3-15), rated on a 5-point scale from 1 to 5. Higher scores reflect higher sexual functioning. A negative change from baseline indicates that symptoms have worsened. | Baseline and Weeks 1, 2, 3, 4 and 5 | 

 Terms related to the study
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Keywords Provided by Centre Hospitalier Valida
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Drug therapy