PREG2 is a randomized controlled trial that aims to evaluate efficacy in preventing intrauterine adhesion recurrence after hysteroscopic adhesiolysis of a novel intrauterine barrier film named Womed Leaf
PREG2 is a prospective, multi-center, randomized, controlled, two arm clinical study. The objective is to evaluate the efficacy of Womed Leaf in preventing intrauterine adhesion recurrence after adhesiolysis compared to adhesiolysis alone. The study will be performed on women with moderate or severe adhesions (AFS score \>=5) scheduled for adhesiolysis. Indeed, the risk of intrauterine adhesion is very high (up to 60%) in this population of patients. A follow-up diagnostic hysteroscopy will be performed 6-8 weeks after the adhesiolysis procedure to determine the presence and severity of IUAs according to the American Fertility Society and European Society of Gynecologic Endoscopy classification systems of adhesions. Fertility-related outcome will include live pregnancy at 1 year, 2 years and 3 years and will be reported as secondary endpoints. 154 women are planned to be included in the PREG2 study.
Study Type
INTERVENTIONAL
Allocation
RANDOMIZED
Purpose
PREVENTION
Masking
DOUBLE
Enrollment
160
Womed Leaf™ device is composed of a uterine anti-adhesion film pre-loaded inside a flexible inserter. Womed Leaf™ is inserted in the uterine cavity by the gynecologist surgeon as a film folded into a 5 mm diameter flexible inserter. Once released, the film will unfold and swell into the uterine cavity to keep uterus walls separated. It is degraded and discharged naturally through the cervix and vagina.
Gent UZ
Ghent, Belgium
Guangdong Maternal and Child Health Hospital
Guangzhou, China
Women's Hospital School Of Medicine Zhejiang University
Hangzhou, China
Efficacy - IUA Severity
Change of AFS score between pre-adhesiolysis and second-look hysteroscopy (AFS) score The scale used to assess the severity of intrauterine adhesions is the American Fertility Society score. It is a 12 points composite score that adds-up 3 subcomponents: - Extend of adhesions (1 = less than 1/3 of the uterine cavity involved with adhesions to 4 = more than 2/3 of the uterine cavity involved with adhesions), * Type of adhesions (1 = Filmy adhesions to 4 = dense adhesions) * Menstrual pattern (0= normal to 4 = amenorrhea). The final score allows the following prognostic classification: 1-4 = mild disease, 5-8 = moderate disease 9-12 = severe disease
Time frame: At second look hysteroscopy between 4 and 8 weeks
Safety - Adverse Events
Adverse events up to second look hysteroscopy.
Time frame: At second look hysteroscopy between 4 and 8 weeks
High-responder Rate
Percentage of patients who have improved from severe to mild adhesions or from severe to no adhesions or from moderate to no adhesions
Time frame: At second look hysteroscopy between 4 and 8 weeks
Change of "Extent of Cavity Involved" Component
Average of AFS score component "extent of cavity involved"
Time frame: At second look hysteroscopy between 4 and 8 weeks
Change in "Extent of Cavity Involved" Component Between Post-adhesiolysis and Second Look Hysteroscopy
Average of AFS score component "extent of cavity involved"
Time frame: At second look hysteroscopy between 4 and 8 weeks
AFS Score
Average of AFS score
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The Obstetrics & Gynecology Hospital Affiliated to Fudan University
Shanghai, China
Gynprenatal
Ostrava, Czechia
CHU Bicêtre
Le Kremlin-Bicêtre, France
CHU de Lille
Lille, France
Hopital La Conception
Marseille, France
CHU Lariboisière
Paris, France
Clinique Mutualiste La sagesse
Rennes, France
...and 5 more locations
Time frame: At second look hysteroscopy between 4 and 8 weeks
Change of Extent of IUA AFS Score Component
Average of the change of the AFS score component "Extent of IUA"
Time frame: At second look hysteroscopy between 4 and 8 weeks
Change of Type of IUA AFS Score Component
Average of the change of the AFS score component "type of IUA"
Time frame: At second look hysteroscopy between 4 and 8 weeks
Menstrual Pattern AFS Score Component
Average of the change of the AFS score component "Menstrual Pattern"
Time frame: At second look hysteroscopy between 4 and 8 weeks
Percentage of Patients Who Have Mild Adhesions or no Adhesion
Percentage of patients who have AFS \< 5
Time frame: At second look hysteroscopy between 4 and 8 weeks
Freedom From IUA
Rate of patients who don't have adhesion
Time frame: At second look hysteroscopy between 4 and 8 weeks
ESGE Stage
Rate of ECGE stage
Time frame: At second look hysteroscopy between 4 and 8 weeks
Level of Post-operative Pain
Level of post-operative pain on a numeric rating scale, with 0 = no pain and 10 = the worst pain.
Time frame: At second look hysteroscopy between 4 and 8 weeks
Level of Discomfort Related to Vaginal Discharge
Level of discomfort related to vaginal discharge on a numeric rating scale, with 0 = no discomfort and 10 = extremely disturbing
Time frame: At second look hysteroscopy between 4 and 8 weeks
Timing of Vaginal Discharge
Timing of vaginal discharge as recalled by the patient
Time frame: At second look hysteroscopy between 4 and 8 weeks
Duration of the Vaginal Discharge
Duration of the vaginal discharge as recalled by the patient
Time frame: At second look hysteroscopy between 4 and 8 weeks
Qualitative Description of the Vaginal Discharge
Qualitative description of the vaginal discharge as recalled by the patient
Time frame: At second look hysteroscopy between 4 and 8 weeks
Change of Menstrual Pattern
Change of menstrual pattern
Time frame: At second look hysteroscopy between 4 and 8 weeks, 1 year, 2 years
Reintervention Rate
Reintervention rate, during second look hysteroscopy or scheduled later up to one year
Time frame: At second look hysteroscopy or scheduled later up to one year
Number of Adhesiolysis Procedures
Number of adhesiolysis procedures after second look to one year
Time frame: After second look to one year
Pregnancy Rate
Pregnancy rate defined as presence of foetal sac or heartbeat by ultrasound at 1 year and 2 years, whether spontaneous or IVF
Time frame: 1 year, 2 years, 3 years
Live Birth Rate
Live birth rate at 1 year and 2 years
Time frame: 1 year 2 years, 3 years
Pregnancy Complication Rate
Pregnancy complication rate
Time frame: 3 years
Time to Pregnancy
Time to pregnancy (i.e. time between the second look hysteroscopy and pregnancy start)
Time frame: 3 years
IUA Severity According to Chinese Scoring System
IUA severity according to Chinese scoring system (for patients enrolled in China only)
Time frame: At second look hysteroscopy between 4 and 8 weeks
Responder Rate
Percentage of patients with an improvement of one clinical category i.e from Severe to Moderate or from Moderate to Mild
Time frame: At second look hysteroscopy between 4 and 8 weeks