Clinical trial NCT06123299: A Randomised, Partly-blinded Investigation to Evaluate the Clinical Performance and Safety of pHyph in Adult Women With Bacterial Vaginosis Compared With an Untreated Control Group
Official title: A Randomised, Partly-blinded Investigation to Evaluate the Clinical Performance and Safety of pHyph in Adult Women With Bacterial Vaginosis Compared With an Untreated Control Group
Study type: INTERVENTIONAL
Overall status: COMPLETED
Phase: NA
Conditions: Bacterial Vaginosis
Lead sponsor: Gedea Biotech AB
Sponsor class: INDUSTRY
First posted: 2023-11-08
Enrollment: 61
Sex: FEMALE
Minimum age (years): 18
Standard ages: ADULT
OLDER_ADULT
Accepts healthy volunteers: no
Allocation: RANDOMIZED
Intervention model: PARALLEL
Primary purpose: TREATMENT

Brief summary: This is a randomised, parallel group, partly blinded investigation to evaluate the clinical performance and safety of pHyph in adult women with bacterial vaginosis. Patients will be randomised to active treatment or no treatment (untreated controls) in a 1:1 ratio. The Investigators carrying out the gynaecological assessments will be blinded. Patients will not be blinded.

The population of this investigation will consist of post-menarchal, pre-menopausal females 18 years or older seeking treatment for BV symptoms ("fishy smell", irritation and burning).

Approximately 82-92 patients will be recruited and randomised. BV will be diagnosed according to Amsel's criteria, defined as having at least 3 of the 4 criteria.

Active treatment (from the start of the investigation) will be compared to no treatment at day 7 after screening (primary endpoint). Clinical cure rate on Day 7 is defined as the absence of all of the following 3 Amsel criteria:

* Thin, white, yellow, homogeneous discharge.
* Clue cells on microscopy (\>20% of epithelial cells).
* Release of a "fishy odour", i.e., a positive "whiff test" when alkali (10% KOH solution) is added.

Patients receiving rescue treatment before Day 7 will be considered as treatment failures.

Patients in the "no treatment group" will receive pHyph as rescue treatment if they are not cured day 7. They will thereafter follow the same scheme as the patients starting with pHyph treatment.

After the initial pHyph treatment, daily during 6 days, patients will continue with pHyph twice weekly until day 25 when an additional assessment will be performed. If the patients are cured, they will continue to receive pHyph as preventive treatment during 6 weeks and possible BV recurrences will be assessed.


Eligibility criteria: Inclusion Criteria:

1. Willing and able to give written informed consent for participation in the clinical investigation, and to comply with all clinical investigation requirements.
2. Adult, post-menarchal, pre-menopausal women aged 18 years or older.
3. Diagnosis of BV according to Amsel's criteria, defined as having at least 3 of the 4 following criteria:

   * Thin, white, yellow, homogeneous discharge.
   * Clue cells on microscopy (\>20% of epithelial cells).
   * pH of vaginal fluid \>4.5.
   * Release of "fishy odour", i.e., a positive "whiff test" when alkali (10% KOH solution) is added. This symptom must be present.
4. Negative urine pregnancy test at screening.
5. Willing to refrain from using any intravaginal products (e.g., contraceptive creams, gels, foams, sponges, lubricants or tampons, etc.) until Day 7 and the following 24 hours after each pHyph administration during weekly treatment.
6. Willing to use condoms during any sexual intercourse with a male sexual partner until the initial pHyph treatment is completes. For patients starting with pHyph on Day 0, this means from Visit 1 (Day 0) until Visit 2 (Day 7). For patients that do not receive any treatment between Day 0 and Day 7, this means from Visit 1 (Day 0), and if they receive pHyph from Day 7, until their Visit 2 (Day 14).
7. Willing to use a method of contraception, e.g., condoms, hormonal contraception (oral, injectable, implantable, intravaginal, or transdermal), intrauterine device (IUD) or intrauterine hormone-releasing system (IUS), during any sexual intercourse that might result in pregnancy from Visit 2 (Day 7 or 14) until Visit 4 (70-77 days) to prevent pregnancy.

Exclusion Criteria:

1. Patients with known or apparent signs of other infectious causes of vaginitis (e.g., vulvovaginal candidiasis, Trichomonas vaginalis, Neisseria gonorrhoeae, Chlamydia trachomatis, Herpes simplex, or human papillomavirus) at screening.
2. History of or presence at screening (Day 0) of any other clinically significant disease or disorder, medical/surgical procedure, or trauma, which, in the opinion of the Investigator, may either put the patient at risk because of participation in the clinical investigation, or influence the results or the patient's ability to participate in the clinical investigation.
3. Anticipated menstruation during the initial daily treatment period (Day 0 until Day 5).
4. Patients who are pregnant or breastfeeding.
5. Patients who are planning to conceive within the 70-77 days of the investigation.
6. Patients who were treated for BV within the 14 days preceding screening.
7. Patients who are currently receiving antibiotic therapy unrelated to BV or have received antibiotic therapy within the 14 days preceding screening.
8. Patients who have used any pH-modifying vaginal products within the 14 days preceding screening.
9. Patients who have received an investigational drug in a clinical trial within 30 days prior to screening.
10. History of severe allergy/hypersensitivity or ongoing allergy/hypersensitivity, as judged by the Investigator, to any of the product components.
11. The Investigator considers the patient unlikely to comply with clinical investigation procedures, restrictions and requirements.

Primary outcomes:
measure: Clinical cure rate on Day 7
timeFrame: 7 days
Secondary outcomes:
measure: Proportion of patients that do not have the symptom "fishy odour" on Days 1 to 7 after start of treatment, compared to Day 0, measured by using a patient questionnaire administered via mobile application.
timeFrame: 7 days
measure: Proportion of patients that do not have the symptom "fishy odour" on Day 7 after start of treatment, compared to Day 0, as assessed by the Investigator as part of the Amsel criteria.
timeFrame: 7 days
measure: Proportion of patients having a reduction in each of 3 BV symptoms scores on Days 1 to 7 after start of treatment, compared to Day 0, measured by using a patient questionnaire administered via mobile application.
timeFrame: 7 days
measure: Safety and local tolerability of pHyph for patients receiving daily treatment for 6 days, based on the reported treatment-emergent AEs up until Day 7 after start of treatment.
timeFrame: 7 days
measure: Clinical cure rate on Day 7 after start of treatment, defined as clinical cure according to secondary endpoint 1 and Nugent score <4, i.e., both criteria have to be fulfilled.
timeFrame: 7 days
measure: Clinical cure rate on Day 7 after start of treatment, defined as Nugent score <4.
timeFrame: 7 days
measure: Usability measured using a patient questionnaire administered via mobile application on Day 7 and Day 25.
timeFrame: Day 7 and 25
measure: Difference between Day 0, Day 7, and Day 25 after start of treatment in the occurrence of anaerobic vaginal dysbiosis, as assessed by analysis of the vaginal microbiome.
timeFrame: Day 25
measure: Difference between Day 0, Day 7, and Day 25 after start of treatment in the occurrence of vaginal yeasts, as assessed by analysis of the vaginal microbiome.
timeFrame: Day 25
measure: For the subgroup of patients with a Nugent score ≥7 on Day 0: Primary endpoint and secondary endpoints 1-4, and 6.
timeFrame: 7 days
measure: Proportion of patients that do not have the symptom "fishy odour" on Day 25 after start of treatment, as assessed by the Investigator as part of the Amsel criteria.
timeFrame: 25 days
measure: Proportion of patients that do not have the symptom fishy "odour" on Day 25 after start of treatment, as assessed by the Investigator as part of the Amsel criteria, and Nugent score <4, i.e., both criteria have to be fulfilled.
timeFrame: 25 days
measure: Clinical cure rate on Day 25 after start of treatment, defined as clinical cure according to the primary endpoint.
timeFrame: 25 days
measure: Clinical cure rate on Day 25 after start of treatment, defined as clinical cure according to the primary endpoint and Nugent score <4, i.e., both criteria have to be fulfilled.
timeFrame: 25 days
measure: Proportion of patients having a reduction in pH on Day 7 after start of treatment compared to Day 0.
timeFrame: 7 days
measure: Recurrence from day 25, as defined by vaginal dysbiosis
timeFrame: 70 days
measure: Recurrence from day 7, as defined by clinical assessment
timeFrame: 70 days
measure: Recurrence from day 25, as defined by clinical assessment
timeFrame: 70 days
measure: Safety and local tolerability for patients receiving preventive treatment:
timeFrame: 70 days
measure: Safety and local tolerability for patients receiving preventive treatment:
timeFrame: 70 days
Other outcomes:
measure: Exploratory endpoints 1
timeFrame: 70 days
measure: Exploratory endpoints 2
timeFrame: 70 days
measure: Exploratory endpoints 3
timeFrame: 70 days
Locations:
city: Linköping
country: Sweden
facility: CTC, Ebbe Park
city: Mölndal
country: Sweden
facility: CTC GoCo
city: Solna
country: Sweden
facility: CTC, Karolinska
city: Stockholm
country: Sweden
facility: Kvinnoforskningsenheten, KS Huddinge
city: Uppsala
country: Sweden
facility: CTC MTC
Study officials:
affiliation: Karolinska Institute, Stockholm
name: Aino Fianu Jonasson, Ass. Prof.
role: PRINCIPAL_INVESTIGATOR
References: