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.
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
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 group | Role | What they receive |
|---|---|---|
| Dysport - Dose Escalation stage 1 | Experimental | Intramuscular injection of Dysport on day 1 of each cycle. Receives: Biological: Botulinum toxin type A |
| Placebo - Dose Escalation stage 1 and Dose Expansion stage 2 | Placebo comparator | Intramuscular injection on day 1 of cycle 1. Receives: Drug: Placebo |
| Dysport - Dose Expansion stage 2 | Active comparator | Depending 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.
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)
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)
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)
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)
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)
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)
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)
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)
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)
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)
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)
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)
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)
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)
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.
- First posted26 Jul 2018
- Study start11 Jun 2018
- Primary completion21 Jan 2021
- Study completion21 Jan 2021
Why it stopped: lack of efficacy
Resources
- Official record on ClinicalTrials.govThe registry entry this page is built from, with its full change history.
- Posted resultsParticipant flow, outcome measures and adverse events reported by the sponsor.
- Publications (1)Papers the sponsor has linked to this study.
- Other trials for VulvodyniaStudies of the same condition, open and under way.
- More trials run by IpsenThe sponsor's other registered studies.
- What the trial phases meanHow a treatment moves from first tests in people to approval.
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)
Sponsor and investigators
- Lead sponsor
- Ipsen
- Sponsor type
- Industry (pharma, biotech, devices)
- Responsible party
- Sponsor
- Investigators
- Ipsen Medical Director, Study director, Ipsen
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
- Results posted
- Yes, on ClinicalTrials.gov
- 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
Study at a glance
From the registry record, last updated by the sponsor on 9 Dec 2021. Recruitment status is as the sponsor reported it: confirm with the study team.
- 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
- ClinicalTrials.gov ID
- NCT03598777
- Acronym / sponsor ID
- DYVINIA / D-FR-52120-236
- Conditions
- Vulvodynia
- Phase
- Phase 2
- Study type
- Interventional
- Recruitment status
- TerminatedReason stopped: lack of efficacy
- Enrolment
- 60 participants (actual)
- Lead sponsor
- IpsenIndustry (pharma, biotech, devices)
- Study start
- 11 Jun 2018 (actual)
- Primary completion
- 21 Jan 2021 (actual)
- Study completion
- 21 Jan 2021 (actual)
- First posted
- 26 Jul 2018 (actual)
- Results
- Posted 9 Dec 2021
Clinical summary
The research question as the sponsor registered it. This describes what the study plans to test, not what it found.
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.
Study design
- Primary purpose
- Treatment
- Allocation
- Randomised
- Intervention model
- Sequential
- Masking
- Double blind (participant, investigator)
- Number of arms
- 3
| Arm | Type | Receives |
|---|---|---|
| Dysport - Dose Escalation stage 1 | Experimental | Biological: Botulinum toxin type AIntramuscular injection of Dysport on day 1 of each cycle. |
| Placebo - Dose Escalation stage 1 and Dose Expansion stage 2 | Placebo comparator | Drug: PlaceboIntramuscular injection on day 1 of cycle 1. |
| Dysport - Dose Expansion stage 2 | Active comparator | Biological: Botulinum toxin type ADepending 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. |
Who may qualify
- Ages
- 18 years and older
- Sex
- Female only
- Healthy volunteers
- Not accepted
- Age groups
- Adult, Older adult
Key inclusion criteria (3 listed)
- 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
Key exclusion criteria (3 listed)
- 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
Eligibility is decided by the study team after screening; this overview does not establish that a patient qualifies. Full inclusion and exclusion criteria.
Interventions
| Intervention | Type | Arms |
|---|---|---|
| Botulinum toxin type AAlso: AbobotulinumtoxinA (Dysport®)Botulinum Toxin Type A (Dysport) using a vial of 500 U will be injected intramuscularly across pelvic floor muscles. | Biological | Dysport - Dose Escalation stage 1, Dysport - Dose Expansion stage 2 |
| PlaceboThe reconstituted solution will be injected intramuscularly across pelvic floor muscles. | Drug | Placebo - Dose Escalation stage 1 and Dose Expansion stage 2 |
Primary outcome
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)
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.
Mean Change From Baseline in Vaginal Dilator Induced Pain During the DB Treatment Period at Week 6 (Stage 2)
Time frame: Baseline (Cycle 1 Day 1) and Cycle 1 Week 6 (DB treatment period, Stage 2)
13 secondary outcomes
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)
Time frame: Baseline (Cycle 1 Day 1) and Cycle 1 Week 6 and Week 12 (DB treatment period, Stage 1)
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)
Time frame: Baseline (Cycle 1 Day 1) and Cycle 1 Week 6 and Week 12 (DB treatment period, Stage 1)
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)
Time frame: Baseline (Cycle 1 Day 1) and Cycle 1 Week 6 and Week 12 (DB treatment period, Stage 1)
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)
Time frame: Baseline (Cycle 1 Day 1) and Cycle 1 Week 6 and Week 12 (DB treatment period, Stage 1)
Mean Change From Baseline in the DTMS During the DB Treatment Period at Week 6 and Week 12 (Stage 1)
Time frame: Baseline (Cycle 1 Day 1) and Cycle 1 Week 6 and Week 12 (DB treatment period, Stage 1)
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)
Time frame: Baseline (Cycle 1 Day 1) and Cycle 1 Week 6 and Week 12 (DB treatment period, Stage 1)
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)
Time frame: Baseline (Cycle 1 Day 1) and Cycle 1 Week 6 and Week 12 (DB treatment period, Stage 1)
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)
Time frame: Baseline (Cycle 1 Day 1) and Cycle 1 Week 6 and Week 12 (DB treatment period, Stage 1)
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)
Time frame: Baseline (Cycle 1 Day 1) and Cycle 1 Week 6 and Week 12 (DB treatment period, Stage 1)
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)
Time frame: Baseline (Cycle 1 Day 1) and Cycle 1 Week 6 and Week 12 (DB treatment period, Stage 1)
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)
Time frame: Baseline (Cycle 1 Day 1) and Cycle 1 Week 6 and Week 12 (DB treatment period, Stage 1)
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)
Time frame: Baseline (Cycle 1 Day 1) and Cycle 1 Week 6 and Week 12 (DB treatment period, Stage 1)
Use of Pain Rescue Medication Associated With Intercourse During the DB Treatment Period at Week 6 and Week 12
Time frame: Baseline (Cycle 1 Day 1) and Cycle 1 Week 6 and Week 12 (DB treatment period, Stage 1)
Results and safety
Loading the posted results from ClinicalTrials.gov…
Research links
- Official record on ClinicalTrials.govLast updated by the sponsor 9 Dec 2021.
- Posted resultsParticipant flow, baseline, all outcome measures and adverse events.
- Derived from this study: PubMed 39953376Goldstein 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.
- Individual participant dataSharing planned: Undecided
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Referral and contact
AzTrials does not enrol participants or take referrals. Contact the study team or a site listed below; they decide who can take part. This study is not recruiting at the moment.
Ipsen Medical Director study director
Ipsen
9 sites in 2 countries: see every site and its status.
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.