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Sexual DysfunctionPhase 3NCT00210613

A Study of Withdrawal Effects With Dapoxetine in the Treatment of Premature Ejaculation

A Phase 3 study testing Dapoxetine in people with Sexual Dysfunction and Ejaculation, run by Johnson & Johnson Pharmaceutical Research & Development, L.L.C..

Completed

Finished. The study has ended and is not enrolling. Results may be posted on the official record.

Official record
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Trial summary

The primary purpose of the study is to assess the possible withdrawal effects after abruptly stopping daily therapy with dapoxetine compared with continuing daily therapy in men with premature ejaculation (PE). Read more about this study

Who is it for?
Ages 18 years and older, men only
Conditions the study is for
Sexual Dysfunction, Ejaculation
What is being tested?
Dapoxetine
How many people
199 participants
Where
No sites listed yet
Study dates
Nov 2004to Aug 2005
Phase
Phase 3
Are there results?
None posted in the registry

Key requirements

Who can take part, as listed by the sponsor. Only the study team can confirm whether you are eligible, so take this list to your doctor.

  • Ages 18 years and older
  • Men only
  • No healthy volunteers
  • Adult, Older adult

Who may be able to join

  • Patient is in a stable, monogamous sexual relationship with the same woman for at least 6 months and plans to maintain this relationship for the duration of the study
  • diagnosis of premature ejaculation (PE) according to the criteria of Diagnostic and Statistical Manual of Mental Disorders (DSM-IV-TR) for at least 6 months before study initiation
  • experience PE in the majority of sexual intercourse events
  • good general health at study initiation
  • patient and partner willing to avoid situations or activities that may have an effect o their sexual activity (for example, avoid pregnancy, refrain from any preplanned surgery)

Who cannot join

  • Not taken dapoxetine or participated in another study investigating pharmacologic treatment of PE within the last 3 months
  • no history of any medical events such as surgery, injury, infections, or neurological conditions that are associated with the development of PE
  • not taken an investigational drug within 1 month, or used an experimental medical device within 6 months, of study initiation
  • no positive diagnosis of depressive or anxiety disorder, manic episode, panic disorder, obsessive-compulsive disorder, posttraumatic stress disorder, alcohol abuse and dependence, schizophrenia, or other psychotic disorders
  • no known allergy or hypersensitivity to selective serotonin reuptake inhibitors (SSRIs) or serotonin norepinephrine reuptake inhibitors (SNRIs)

About this study

Official title: A Placebo-Controlled, Double-Blind, Randomized, Parallel Study of the Withdrawal Effects of Chronic Daily and As-Needed Dosing With Dapoxetine in the Treatment of Premature Ejaculation

The primary purpose of the study is to assess the possible withdrawal effects after abruptly stopping daily therapy with dapoxetine compared with continuing daily therapy in men with premature ejaculation (PE).

Read the detailed description

Premature ejaculation (PE) is a form of male sexual dysfunction. A measure of withdrawal effects associated with stopping therapy for PE is the Discontinuation-Emergent Signs and Symptoms (DESS), a series of questions for signs and symptoms experienced by the patient. This study of men with PE is a multicenter, randomized, double-blind trial consisting of 3 phases: pre-randomization phase (a screening visit and 1-week baseline period); 10-week double-blind treatment phase during which patients receive dapoxetine or placebo; and 2-week follow-up phase. The total duration of the study is approximately 13 weeks. During the double-blind phase patients receive study medication for once daily treatment and for use on as "as-needed" basis prior to sexual activity. After 9 weeks, some patients (half of the active patients) continue treatment with dapoxetine and other (another half of the active patients) are switched to placebo for the last week of therapy, abruptly stopping the study drug. Assessments of effectiveness include the incidence of withdrawal symptoms, assessed by changes in DESS; control over ejaculation, satisfaction with sexual intercourse, and severity of symptom impressions, based on questions asked at specified intervals during the study. Safety assessments include the incidence, severity, and type of adverse events throughout the study, as well as laboratory tests and questionnaires to monitor sexual function at specified times during the study.The study hypothesis is that abruptly stopping treatment with dapoxetine in men with PE does not result in an increase in withdrawal symptoms (as assessed by DESS), compared with the men who stay with the treatment. Oral tablets of dapoxetine (60 milligrams) taken once daily and also as needed during 10 weeks of treatment. No more than 1 tablet for daily treatment and 1 as-needed tablet within a 24-hour period.

Being tested
Dapoxetine
Keywords
dapoxetine, premature ejaculation, sexual dysfunction, orgasmic disorder, sexual intercourse, ejaculation
Medical subject headings
Sexual Dysfunction, Physiological, Premature Ejaculation, Sexual Dysfunctions, Psychological, Coitus

What participants receive

What participants receive. In a randomised study each person is assigned to one group by chance.

  • DapoxetineDrug

What is being measured

The primary outcome is the main question the study is designed to answer.

  1. Incidence of withdrawal symptoms (defined by a checklist of signs and symptoms associated with stopping the therapy) at Weeks 9, 10, and 11 of treatment

Secondary outcomes (1)
  1. Control over ejaculation, satisfaction with sexual intercourse, and severity of symptom impressions, based on questions asked at start of study through Week 11; adverse incidence and severity throughout study and follow up (Week 12)

Timeline

From the start of the study to its completion; the mark is today. Estimated dates are the sponsor’s plan.

  1. First posted21 Sep 2005 (estimated)
  2. Study startNov 2004
  3. Study completionAug 2005

Resources

More details

For doctors and researchers: how the study is designed, who runs it, and its registry IDs.

Study design
Study type
Interventional
Phase
Phase 3
Primary purpose
Treatment
Allocation
Randomised
Intervention model
Parallel groups
Masking
Double blind
Enrolment
199 participants (actual)
IDs, dates and publications
ClinicalTrials.gov ID
NCT00210613
Sponsor's protocol ID
CR003451
Status last verified
Dec 2010
First submitted
13 Sep 2005
Last updated
8 Jun 2011
Results posted
No

Publications

  • Porst H, McMahon CG, Althof SE, Sharlip I, Bull S, Aquilina JW, Tesfaye F, Rivas DA. Baseline characteristics and treatment outcomes for men with acquired or lifelong premature ejaculation with mild or no erectile dysfunction: integrated analyses of two phase 3 dapoxetine trials. J Sex Med. 2010 Jun;7(6):2231-2242. doi: 10.1111/j.1743-6109.2010.01820.x. Epub 2010 Apr 19.

    PubMed 20412423
  • McMahon CG, Althof SE, Kaufman JM, Buvat J, Levine SB, Aquilina JW, Tesfaye F, Rothman M, Rivas DA, Porst H. Efficacy and safety of dapoxetine for the treatment of premature ejaculation: integrated analysis of results from five phase 3 trials. J Sex Med. 2011 Feb;8(2):524-39. doi: 10.1111/j.1743-6109.2010.02097.x. Epub 2010 Nov 8.

    PubMed 21059176

Questions about this trial

What is this clinical trial studying?

A Phase 3 study testing Dapoxetine in people with Sexual Dysfunction and Ejaculation, run by Johnson & Johnson Pharmaceutical Research & Development, L.L.C..

The full registered description is in the About this study section and the official record.

Who may be eligible to take part?

The sponsor lists 5 inclusion and 5 exclusion criteria. Eligibility is decided by the study team after screening, so read the full criteria and contact a listed site.

Is this clinical trial currently recruiting?

The record says: finished, as of the sponsor's last update on 8 Jun 2011. Status can change between updates, so confirm with the study contact before making plans.

What are the possible benefits and risks?

They depend on the study and the treatment, and no study can promise a benefit. The study team explains the known risks during informed consent, before anyone joins; the record itself does not list them.

What does this phase mean?

Phase 3 studies compare the treatment with the current standard treatment or a placebo in a large group, to confirm how well it works and watch for side effects.

Not every study follows the same path, and some studies (observational studies, device studies) have no phase.

Are results available for this study?

The study is completed, but results are not available in the source record. That does not mean the treatment did or did not work.

How can a doctor refer a patient or contact the research team?

The record lists no contact. The official record names the sponsor, who can be asked directly. AzTrials does not enrol participants or take referrals.

What does the primary outcome measure?

Incidence of withdrawal symptoms (defined by a checklist of signs and symptoms associated with stopping the therapy) at Weeks 9, 10, and 11 of treatment. It is what the study was designed to measure, not a finding.

Where can I read the original study information?

On the ClinicalTrials.gov record for NCT00210613, which also lists 2 linked publications.

Does a listing mean the treatment is approved or proven to work?

No. A listing means the study is registered. It does not show that the treatment is safe, works, or is approved by a regulator.

How often is this information updated?

AzTrials copies changed records from ClinicalTrials.gov every night and reloads the whole registry every week. The sponsor last updated this record on 8 Jun 2011.

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