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VulvodyniaPhase 2DYVINIANCT03598777

Dysport in Vulvodynia Phase II Study

A Phase 2 study testing Botulinum toxin type A in people with Vulvodynia, run by Ipsen at 9 sites in 2 countries.

Terminated

Stopped early. The study ended before it was planned to and will not resume.

Official record
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Trial summary

This study is designed to define optimal doses of Dysport and evaluate its efficacy and safety compared with placebo for the treatment of vulvodynia. The study will consist of a dose escalation stage (Stage 1) and a dose expansion stage (Stage 2). Read more about this study

Who is it for?
Ages 18 years and older, women only
Conditions the study is for
Vulvodynia
What is being tested?
Botulinum toxin type A
Type of treatment
Injection or infusion
Could I receive a placebo?
Yes, some participants may receive a placebo
How many people
60 participants
Where
9 sitesin 2 countries
Study dates
11 Jun 2018to 21 Jan 2021
Phase
Phase 2
Are there results?
Yes, posted in the registrySummary in the doctors' view

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
  • Women only
  • No healthy volunteers
  • Adult, Older adult

Who may be able to join

  • Premenopausal
  • Have vulvodynia for at least 6 months and for no more than 15 years
  • Have provoked pain at the vestibule on a Q tip test

Who cannot join

  • Deep pain during intercourse
  • Have genitourinary or gastrointestinal conditions which may interfere with the study
  • Previous surgery that according to investigator's judgement may impact on study outcome (including but not limited to hysterectomy, vestibulectomy, urologic surgery, perianal surgery) or genital trauma or mutilation/cutting

Trial locations and contacts

9 sites in 2 countries.

9 sites in 2 countries

United States8 sites
  • University of Kansas Medical Center

    Kansas City, Missouri, 66160

  • New Age Medical Research Corporation

    Miami, Florida, 33186

  • Women's Institute for Sexual Health (WISH)

    Nashville, Tennessee, 37209

  • The Center for Vulvovaginal Disorders

    New York, New York, 10036

  • Omaha OB-GYN Associates, PC

    Omaha, Nebraska, 68130

  • Seattle Women's: Health, Research, Gynecology®

    Seattle, Washington, 98105

  • James A. Simon, MD, PC

    Washington D.C., District of Columbia, 20036

  • The Center for Vulvovaginal Disorders

    Washington D.C., District of Columbia, 20037

Other trials in United States

Canada1 site
  • Clinique de Santé des Femmes

    Québec, G15 2L6

Other trials in Canada

About this study

Official title: A Phase II, Multicentre, Double-blind, Randomised, Placebo Controlled, Dose Escalation and Dose Finding Study to Evaluate the Efficacy and Safety of Dysport in Vulvodynia Patients

This study is designed to define optimal doses of Dysport and evaluate its efficacy and safety compared with placebo for the treatment of vulvodynia.

The study will consist of a dose escalation stage (Stage 1) and a dose expansion stage (Stage 2). Both Stage 1 and Stage 2 will consist of a double-blind period (with treatment cycle 1; Dysport or placebo) followed by an open label treatment period. One or two optimally safe and effective doses of Dysport selected from Stage 1 will be further investigated in the Stage 2.

Conditions
Vulvodynia
Being tested
Botulinum toxin type A, Placebo
Medical subject headings
Vulvodynia

What participants receive

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

  • Botulinum toxin type ABiological

    Also called AbobotulinumtoxinA (Dysport®)

    Botulinum Toxin Type A (Dysport) using a vial of 500 U will be injected intramuscularly across pelvic floor muscles.

  • PlaceboDrug

    The reconstituted solution will be injected intramuscularly across pelvic floor muscles.

Study groups in NCT03598777
Study groupRoleWhat they receive
Dysport - Dose Escalation stage 1ExperimentalIntramuscular injection of Dysport on day 1 of each cycle.
Receives: Biological: Botulinum toxin type A
Placebo - Dose Escalation stage 1 and Dose Expansion stage 2Placebo comparatorIntramuscular injection on day 1 of cycle 1.
Receives: Drug: Placebo
Dysport - Dose Expansion stage 2Active comparatorDepending upon the results from Stage 1 one or two doses of Dysport will be selected. Intramuscular injection of Dysport on day 1 of each cycle.
Receives: Biological: Botulinum toxin type A

What is being measured

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

  1. Number of Participants With Treatment-emergent Adverse Events (TEAEs) During the DB Treatment Period (Stage 1)

    For Stage 1, the primary endpoint was safety during the DB treatment period as assessed by the incidence of adverse events (AEs). An AE was the development of an undesirable medical condition or the deterioration of a pre-existing medical condition following or during exposure to a pharmaceutical product, whether or not considered causally related to the product. An undesirable medical condition could have been symptoms, signs or abnormal results of an investigation. A TEAE was an event with start date on or after the date of the first investigational medicinal product (IMP). Relatedness to treatment was assessed by the investigator. TEAEs of special interest included events suggesting a possible remote spread of effect of the toxin, events related to urinary incontinence or faecal incontinence and events assessed as a potential hypersensitivity reaction. Results for this outcome are reported as the number of participants experiencing at least one TEAE in each specified category.

    Measured: From Baseline (Cycle 1 Day 1) to Cycle 1 Week 12 (DB treatment period, Stage 1)

  2. Mean Change From Baseline in Vaginal Dilator Induced Pain During the DB Treatment Period at Week 6 (Stage 2)

    Measured: Baseline (Cycle 1 Day 1) and Cycle 1 Week 6 (DB treatment period, Stage 2)

Secondary outcomes (13)
  1. Mean Change From Baseline in Vaginal Dilator Induced Pain as Reported on an 11-point Numeric Rating Scale (NRS) During the DB Treatment Period at Week 6 and Week 12 (Stage 1)

    For the dilator test, a vaginal dilator was used by the investigator to provoke pain to allow assessment of vestibular pain intensity in each participant. Participants rated their pain using an 11-point NRS ranging from 0 to 10, where 0 was no pain and 10 was the worst possible pain. Higher scores indicate a worse outcome. The dilator test was used to assess the change from Baseline in the vaginal dilator induced pain (using the DMTS reported at Baseline). Baseline was defined as the last value available prior to the first study IMP treatment administration. Results for this outcome are reported as change from Baseline during the DB treatment period at Week 6 and Week 12.

    Measured: Baseline (Cycle 1 Day 1) and Cycle 1 Week 6 and Week 12 (DB treatment period, Stage 1)

  2. Number of Participants Who Reported at Least a 50% Decrease From Baseline in Vaginal Dilator Induced Pain as Reported on an 11-point NRS During the DB Treatment Period at Week 6 and Week 12 (Stage 1)

    For the dilator test, a vaginal dilator was used by the investigator to provoke pain to allow assessment of vestibular pain intensity in each participant. Participants rated their pain using an 11-point NRS ranging from 0 to 10, where 0 was no pain and 10 was the worst possible pain. Higher scores indicate a worse outcome. The dilator test was used to assess the change from Baseline in the vaginal dilator induced pain (using the DMTS reported at Baseline). Baseline was defined as the last value available prior to the first study IMP treatment administration. Results for this outcome are reported as the number of participants who had a ≥50% decrease from Baseline during the DB treatment period at Week 6 and Week 12.

    Measured: Baseline (Cycle 1 Day 1) and Cycle 1 Week 6 and Week 12 (DB treatment period, Stage 1)

  3. Number of Participants Who Reported at Least a 30% Decrease From Baseline in Vaginal Dilator Induced Pain as Reported on an 11-point NRS During the DB Treatment Period at Week 6 and Week 12 (Stage 1)

    For the dilator test, a vaginal dilator was used by the investigator to provoke pain to allow assessment of vestibular pain intensity in each participant. Participants rated their pain using an 11-point NRS ranging from 0 to 10, where 0 was no pain and 10 was the worst possible pain. Higher scores indicate a worse outcome. The dilator test was used to assess the change from Baseline in the vaginal dilator induced pain (using the DMTS reported at Baseline). Baseline was defined as the last value available prior to the first study IMP treatment administration. Results for this outcome are reported as the number of participants who had a ≥30% decrease from Baseline during the DB treatment period at Week 6 and Week 12.

    Measured: Baseline (Cycle 1 Day 1) and Cycle 1 Week 6 and Week 12 (DB treatment period, Stage 1)

  4. Number of Participants Who Reported at Least a 2-point Decrease From Baseline in Vaginal Dilator Induced Pain as Reported on an 11-point NRS During the DB Treatment Period at Week 6 and Week 12 (Stage 1)

    For the dilator test, a vaginal dilator was used by the investigator to provoke pain to allow assessment of vestibular pain intensity in each participant. Participants rated their pain using an 11-point NRS ranging from 0 to 10, where 0 was no pain and 10 was the worst possible pain. Higher scores indicate a worse outcome. The dilator test was used to assess the change from Baseline in the vaginal dilator induced pain (using the DMTS reported at Baseline). Baseline was defined as the last value available prior to the first study IMP treatment administration. Results for this outcome are reported as the number of participants who had a ≥2-point decrease from Baseline during the DB treatment period at Week 6 and Week 12.

    Measured: Baseline (Cycle 1 Day 1) and Cycle 1 Week 6 and Week 12 (DB treatment period, Stage 1)

  5. Mean Change From Baseline in the DTMS During the DB Treatment Period at Week 6 and Week 12 (Stage 1)

    For the dilator test, a set of 8 vaginal dilators of increasing diameter (#1 being the smallest and #8 being the largest) were used by the investigator to provoke pain to allow assessment of vestibular pain intensity in each participant. Based on the subjective pain threshold, the largest sized dilator that the participant accepted/tolerated for the test, was defined as the DMTS. Participants rated their pain using an 11-point NRS ranging from 0 to 10, where 0 was no pain and 10 was the worst possible pain. Higher scores indicate a worse outcome. Baseline was defined as the last value available prior to the first study IMP treatment administration. Results for this outcome are reported as change from Baseline in the DTMS during the DB treatment period at Week 6 and Week 12.

    Measured: Baseline (Cycle 1 Day 1) and Cycle 1 Week 6 and Week 12 (DB treatment period, Stage 1)

  6. Mean Change From Baseline in the Composite Score for the Vaginal Dilator Induced Pain and Dilator Size During the DB Treatment Period at Week 6 and Week 12 (Stage 1)

    For the dilator test, a set of 8 vaginal dilators of increasing diameter (#1 being the smallest and #8 being the largest) were used by the investigator to provoke pain to allow assessment of vestibular pain intensity in each participant. The composite score for the vaginal dilator induced pain and dilator size was the sum of all pain measurements across the full range of dilator sizes. For any dilator size that was beyond the DMTS, the pain score was 10. There was to be at least 6 pain scores (recorded by the investigator) to calculate the composite score. Participants rated their pain using an 11-point NRS ranging from 0 to 10, where 0 was no pain and 10 was the worst possible pain. Higher scores indicate a worse outcome. Baseline was defined as the last value available prior to the first study IMP treatment administration. Results for this outcome are reported as change from Baseline in the composite score for the dilator test during the DB treatment period at Week 6 and Week 12.

    Measured: Baseline (Cycle 1 Day 1) and Cycle 1 Week 6 and Week 12 (DB treatment period, Stage 1)

  7. Mean Change From Baseline in Pain During Insertion of Vaginal Dilator Number 6 Size as Reported on an 11-point NRS During the DB Treatment Period at Week 6 and Week 12 (Stage 1)

    From 2 weeks prior to the next planned visit, all participants rated in the electronic diary (eDiary) once a week the level of the corresponding pain following insertion of the number 6 vaginal dilator into the vagina. Participants rated their pain using an 11-point NRS ranging from 0 to 10, where 0 was no pain and 10 was the worst possible pain. Higher scores indicate a worse outcome. Baseline was defined as the last value available prior to the first study IMP treatment administration. Results for this outcome are reported as the change from Baseline in participant reported pain score for the number 6 dilator test during the DB treatment period at Week 6 and Week 12.

    Measured: Baseline (Cycle 1 Day 1) and Cycle 1 Week 6 and Week 12 (DB treatment period, Stage 1)

  8. Number of Participants Who Reported at Least a 50% Decrease From Baseline in Pain During Insertion of Vaginal Dilator Number 6 Size as Reported on an 11-point NRS During the DB Treatment Period at Week 6 and Week 12 (Stage 1)

    From 2 weeks prior to the next planned visit, all participants rated in the eDiary once a week the level of the corresponding pain following insertion of the number 6 vaginal dilator into the vagina. Participants rated their pain using an 11-point NRS ranging from 0 to 10, where 0 was no pain and 10 was the worst possible pain. Higher scores indicate a worse outcome. Baseline was defined as the last value available prior to the first study IMP treatment administration. Results for this outcome are reported as the number of participants who had a ≥50% decrease from Baseline in participant reported pain score for the number 6 dilator test during the DB treatment period at Week 6 and Week 12.

    Measured: Baseline (Cycle 1 Day 1) and Cycle 1 Week 6 and Week 12 (DB treatment period, Stage 1)

  9. Number of Participants Who Reported at Least a 30% Decrease From Baseline in Pain During Insertion of Vaginal Dilator Number 6 Size as Reported on an 11-point NRS During the DB Treatment Period at Week 6 and Week 12 (Stage 1)

    From 2 weeks prior to the next planned visit, all participants rated in the eDiary once a week the level of the corresponding pain following insertion of the number 6 vaginal dilator into the vagina. Participants rated their pain using an 11-point NRS ranging from 0 to 10, where 0 was no pain and 10 was the worst possible pain. Higher scores indicate a worse outcome. Baseline was defined as the last value available prior to the first study IMP treatment administration. Results for this outcome are reported as the number of participants who had a ≥30% decrease from Baseline in participants reported pain score for the number 6 dilator test during the DB treatment period at Week 6 and Week 12.

    Measured: Baseline (Cycle 1 Day 1) and Cycle 1 Week 6 and Week 12 (DB treatment period, Stage 1)

  10. Number of Participants Who Reported at Least a 2-point Decrease From Baseline in Pain During Insertion of Vaginal Dilator Number 6 Size as Reported on an 11-point NRS During the DB Treatment Period at Week 6 and Week 12 (Stage 1)

    From 2 weeks prior to the next planned visit, all participants rated in the eDiary once a week the level of the corresponding pain following insertion of the number 6 vaginal dilator into the vagina. Participants rated their pain using an 11-point NRS ranging from 0 to 10, where 0 was no pain and 10 was the worst possible pain. Higher scores indicate a worse outcome. Baseline was defined as the last value available prior to the first study IMP treatment administration. Results for this outcome are reported as the number of participants who had a 2-point decrease from Baseline in participant reported pain score for the number 6 dilator test during the DB treatment period at Week 6 and Week 12.

    Measured: Baseline (Cycle 1 Day 1) and Cycle 1 Week 6 and Week 12 (DB treatment period, Stage 1)

  11. Mean Change From Baseline in Pain During Intercourse as Reported on an 11-point NRS During the DB Treatment Period at Week 6 and Week 12 (Stage 1)

    From the Screening visit, and then 2 weeks prior to the next planned visit, participants recorded on a daily basis in the eDiary if they had intercourse and if yes, the level of the corresponding pain during each intercourse instance. Participants rated their pain using an 11-point NRS ranging from 0 to 10, where 0 was no pain and 10 was the worst possible pain. Higher scores indicate a worse outcome. The 2-week average was used, which was calculated as the average of the score over the last 2 weeks (14 days) prior to the visit. Baseline was defined as the last value available prior to the first study IMP treatment administration. Results for this outcome are reported as the change from Baseline in participant reported pain score during intercourse (over the last 2 weeks prior to each visit) during the DB treatment period at Week 6 and Week 12.

    Measured: Baseline (Cycle 1 Day 1) and Cycle 1 Week 6 and Week 12 (DB treatment period, Stage 1)

  12. Mean Change From Baseline in the Number of Intercourse Instances in Participants With Partners During the DB Treatment Period at Week 6 and Week 12 (Stage 1)

    From the Screening visit, and then 2 weeks prior to the next planned visit, participants recorded on a daily basis in the eDiary if they had intercourse and if yes, the number of intercourse instances in the previous 24-hour period. The number of intercourse instances over the 2 weeks preceding the visit was calculated as the total recorded number of intercourse instances over 14 days prior to the visit. Baseline was defined as the last value available prior to the first study IMP treatment administration. Results for this outcome are reported as the change from Baseline in number of intercourse instances (over the last 2 weeks prior to each visit) during the DB treatment period at Week 6 and Week 12.

    Measured: Baseline (Cycle 1 Day 1) and Cycle 1 Week 6 and Week 12 (DB treatment period, Stage 1)

  13. Use of Pain Rescue Medication Associated With Intercourse During the DB Treatment Period at Week 6 and Week 12

    From the Screening visit, and then 2 weeks prior to the next planned visit, participants recorded on a daily basis in the eDiary if they had intercourse and also details of any pain rescue medication consumed for each intercourse instance to prevent or treat the vestibular pain. If a participant used the rescue medication associated with at least one instance during the 2-week prior to a visit, the participant was considered as having used the rescue medication for that visit. Results for this outcome are reported as the number of participants using pain rescue medication associated with intercourse (over the last 2 weeks prior to each visit) during the DB treatment period at Baseline, Week 6 and Week 12.

    Measured: Baseline (Cycle 1 Day 1) and Cycle 1 Week 6 and Week 12 (DB treatment period, Stage 1)

Timeline

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

  1. First posted26 Jul 2018
  2. Study start11 Jun 2018
  3. Primary completion21 Jan 2021
  4. Study completion21 Jan 2021

Why it stopped: lack of efficacy

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 2
Primary purpose
Treatment
Allocation
Randomised
Intervention model
Sequential
Masking
Double blind
Who is masked
Participant, Investigator
Enrolment
60 participants (actual)
IDs, dates and publications
ClinicalTrials.gov ID
NCT03598777
Sponsor's protocol ID
D-FR-52120-236
Acronym
DYVINIA
Status last verified
Oct 2021
First submitted
8 Jun 2018
Last updated
9 Dec 2021
Data monitoring committee
Yes
FDA-regulated drug
Yes
FDA-regulated device
No
Individual data sharing
Undecided

Publications

  • Goldstein A, Rubin R, Dahir M, Goldstein I, Faught BM, Bohm-Starke N, Krapf J, Caetano P, Volteau M, Silva R. Phase 2 randomized study of abobotulinumtoxinA in patients with provoked vestibulodynia: dose-finding results. J Sex Med. 2025 Apr 15;22(4):588-596. doi: 10.1093/jsxmed/qdaf022.

    PubMed 39953376

Questions about this trial

What is this clinical trial studying?

A Phase 2 study testing Botulinum toxin type A in people with Vulvodynia, run by Ipsen at 9 sites in 2 countries.

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 3 inclusion and 3 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: stopped early, as of the sponsor's last update on 9 Dec 2021. Status can change between updates, so confirm with the study contact before making plans.

Where is the study taking place?

The record lists 9 sites in United States, Canada. Whether a site is taking part right now should be confirmed with that site. See every site.

What are the possible benefits and risks?

They depend on the study and the treatment, and no study can promise a benefit. Some participants in this study may receive a placebo. 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 2 studies give the treatment to a larger group to see whether it has the intended effect and to keep checking safety.

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

Are results available for this study?

Yes. Results are posted in the registry (first posted 9 Dec 2021). A summary is in the For doctors view, and the full results are on ClinicalTrials.gov.

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?

Number of Participants With Treatment-emergent Adverse Events (TEAEs) During the DB Treatment Period (Stage 1) (time frame: From Baseline (Cycle 1 Day 1) to Cycle 1 Week 12 (DB treatment period, Stage 1)). The study lists 2 primary outcomes in all. 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 NCT03598777, which also lists 1 linked publication.

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 9 Dec 2021.

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