Clinical Trials Logo

Clinical Trial Details — Status: Not yet recruiting

Administrative data

NCT number NCT05434104
Other study ID # 2021.0268
Secondary ID
Status Not yet recruiting
Phase N/A
First received
Last updated
Start date October 2022
Est. completion date June 2024

Study information

Verified date October 2022
Source St George's, University of London
Contact Pippa Oakeshott, MD
Phone 020 8725 0153
Email oakeshot@sgul.ac.uk
Is FDA regulated No
Health authority
Study type Interventional

Clinical Trial Summary

Three-quarters of women have bacterial vaginosis (BV) or vaginal thrush/candida yeast infection at least once during their lifetime. Symptoms can include abnormal vaginal discharge, soreness, itching and an unpleasant smell. BV during pregnancy can make the baby come too early. In the UK over a million women suffer recurrent vaginal infections. These can affect their sexual relationships and quality of life, and may need repeated courses of treatment. But some women prefer not to keep taking antibiotics which can have side effects and encourage the growth of resistant superbugs. Lactoferrin is a prebiotic protein derived from cow's milk. Women also have naturally occurring lactoferrin in their vagina where it helps to prevent infections and encourage the growth of healthy bacteria. Recent research suggests lactoferrin may be an effective treatment for BV and thrush, but this needs to be confirmed. Aim To see if it is feasible to conduct a future trial to prove whether lactoferrin vaginal pessaries are an acceptable, effective and cost-effective alternative to antibiotic tablets for women with BV or thrush. Methods The investigators will recruit a total of 57 women with BV and 57 with thrush from two sexual health clinics and a general practice. Women will be asked to provide self-taken vaginal samples with a cotton bud, and to complete a confidential sexual-health questionnaire. Then the women will be divided into two groups. One group will be given lactoferrin vaginal pessaries to use every night for 3-weeks. The other group will be given antibiotic/antifungal tablets. All women will be asked to provide repeat vaginal samples at home and text us about any symptoms to see if the treatment works, if the infection comes back and if they would like antibiotics. After 12-weeks all women will be invited back for a final check-up. Outcome measures: - Acceptability and use of vaginal lactoferrin - from questionnaires, and interviews with 15-20 women - Recruitment and follow-up rates - Cost of lactoferrin treatment - The percentage of women who report their symptoms have resolved after a week - How quickly infections clear or recur - from analysis of samples Patient benefit: If this study leads to a trial showing vaginal lactoferrin is an acceptable and effective alternative to antibiotics, this could help relieve symptoms, prevent antimicrobial resistance and save NHS costs.


Description:

Research Question: Is it feasible to conduct a future trial to investigate if Lactoferrin is an acceptable alternative to oral antibiotics/antifungals for women with bacterial vaginosis or thrush? Background Over 200,000 women are affected by bacterial vaginosis (BV) or vaginal candida/thrush each year in England. A million women suffer recurrent infections which many find distressing. The infections may also be associated with HIV infection and adverse pregnancy outcomes. Although BV and candida can be treated with oral antibiotics/antifungals, these can have side effects and encourage the development of antimicrobial resistance, a major global health problem. Lactoferrin is a naturally occurring prebiotic protein present in the vagina where it helps to prevent infections and normalise the vaginal microbiome. It has been used to treat refractory BV and may also be effective against candida, but more evidence is needed. Objective To see if it is feasible to conduct a future, definitive trial in women with BV or candida to investigate if vaginal lactoferrin pessaries are as effective as oral antibiotics in resolving symptoms, preventing recurrent infection and producing a healthy lactobacilli-dominated vaginal microbiome. Design: open label randomised feasibility study over 12 weeks with qualitative, economic and microbiological evaluations. Setting: a sexual health clinic and a general practice Population 114 women with genitourinary symptoms and BV (n=57) or candida (n=57) confirmed on vaginal Gram stain. After completing questionnaires and providing self-taken vaginal samples women will be randomly allocated 2:1 into intervention or control groups. All women will be followed up with repeat samples and text/online questionnaires after 1,2,3,4 and 12 weeks. Intervention 38 women with BV and 38 women with candida will be given vaginal 300mg lactoferrin pessaries to insert nightly for 21 nights Comparator 19 women with BV will be given metronidazole 400mg twice daily for 5-days, and 19 women with candida will be given a fluconazole 150mg capsule. Outcomes - Acceptability of vaginal lactoferrin - from questionnaires, and interviews - Adherence to treatment (from participants' weekly count of remaining pessaries/tablets) - Recruitment rate and willingness of women to be randomised - Follow-up rate - Acceptability of study procedures such as providing vaginal samples and responding to texts about symptoms. - Adverse events - Estimate of the cost of lactoferrin and the feasibility of obtaining data on healthcare use - Percentage of participants who complete twice weekly symptom questionnaires and provide self-taken vaginal samples at home which are suitable for microbiological analyses. These findings will inform the design of a future definitive trial. Masking This is an open label trial and there will be no blinding to treatment allocation of the participants or researchers. However, the analysis of samples (Gram stain and microbiome analysis) will be done blind to treatment allocation [1]. Sample size calculations and analysis We will recruit 114 women in order to achieve a final sample of 90 followed-up women at 12-weeks (30 with BV given lactoferrin, 30 with candida given lactoferrin, and 30 controls (15 with BV, 15 candida) given oral antibiotics/antifungals. This allows for 24 women (21%) either lost to follow up (12%), recruited in general practice but not BV/thrush on Gram stain (4%) or given antibiotics for an STI (3%) an unrelated reason (2%, eg dental abscess) as antibiotics may affect both symptoms and the vaginal microbiome. Sixty intervention women and 30 controls is consistent with numbers recommended by Teare et al for feasibility studies and will provide an acceptable level of precision around the study's key feasibility outcomes [32]. For example, a recruitment rate of 50% (114/228) will have a 95% confidence interval of 43.5% to 56.5%; and a follow-up rate of 80% (91 /114) will have a 95% confidence interval of 72.5% to 87.2%. Each week the sexual health specialist investigator sees an average of six eligible women in his recurrent vaginitis clinic and the general practitioner investigator sees one or two in general practice. PPI work and our previous trials suggest ≥50% of eligible women will agree to participate [26, 27]. If we recruit an average of 3 women a week (two in clinic, one in GP) we should complete recruitment of 114 women within 38 weeks. We will allow 12 months. Analysis of quantitative study outcomes will be descriptive. Numbers and percentages will be presented, along with 95% confidence intervals. Weekly pessary/tablet counts will be presented as mean (SD) or median (IQR) as appropriate. Numbers of adverse events and number of women with adverse events will be summarised. The flow of participants through the study will be presented in a CONSORT diagram. Timetable (months) 1-2 set-up 3-14 recruit 114 women and randomise 2:1 to lactoferrin/standard treatment 6-19 12-week follow-up in clinic 11-20 qualitative evaluation 13-20 statistical/cost/microbiome analyses 18-23 reports/dissemination Impact/Dissemination Study findings will be published in high impact journals and widely publicised. If progression criteria are met, (lactoferrin is acceptable to ≥70% of women, recruitment rate≥50%, follow-up ≥70%,) this could lead to a definitive trial which confirms that treating BV/candida with lactoferrin is an acceptable, effective, safe and cost-effective alternative to antibiotics. This could benefit women by reducing their use of antibiotics, preventing recurrent infections and decreasing the spread of antimicrobial resistance.


Recruitment information / eligibility

Status Not yet recruiting
Enrollment 114
Est. completion date June 2024
Est. primary completion date December 2023
Accepts healthy volunteers No
Gender Female
Age group 16 Years to 50 Years
Eligibility Inclusion Criteria: - Aged 16-49 years - Having periods (apart from women with a Mirena IUCD or polycystic ovary syndrome) - Ability to consent - Clinical diagnosis of BV or thrush confirmed on Gram stain - Willing to be randomised to vaginal lactoferrin pessaries or oral antibiotics/antifungals - Agrees to provide vaginal samples at home and post/deliver them back to the research team. - Agrees to avoid douching during the study (as this can flush out lactobacilli needed for a healthy microbiome). Exclusion Criteria: - Pregnant or breast feeding - Currently has chlamydia, gonorrhoea or trichomonas (as treatment for these would affect the results). - Known allergy to metronidazole or azoles - Post-menopausal (because of diagnostic confusion between atrophic vaginitis and bacterial vaginosis)

Study Design


Intervention

Other:
Vaginal lactoferrin
Lactoferrin vaginal pessaries to insert nightly for seven nights
Drug:
Usual care
Women with bacterial vaginosis will be given oral metronidazole and women with vaginal candida will be given oral fluconazole

Locations

Country Name City State
United Kingdom St George's, University of London London
United Kingdom St Thomas' NHS Trust London

Sponsors (3)

Lead Sponsor Collaborator
St George's, University of London King's College London, Statens Serum Institut

Country where clinical trial is conducted

United Kingdom, 

Outcome

Type Measure Description Time frame Safety issue
Primary The acceptability of vaginal lactoferrin treatment This will be assessed from interviews with 15-20 participants 4-16 weeks after recruitment
Primary Adherence to treatment This will be assessed from participants' weekly count of remaining pessaries/tablets from questionnaires at 1, 2, 3 and 4 weeks During the first 4 weeks of the study
Primary Recruitment rate Investigators will record the percentage of eligible women who agree to take part Up to 15 months
Primary Follow-up rate Investigators will record the percentage of randomised women who are followed up after 12 weeks Up to 20 months
Secondary Acceptability of study procedures, and whether participants think other women would be willing to take part in a future randomised trial of lactoferrin versus oral antibiotics. Investigators will conduct telephone interviews between 4 and 16 weeks after recruitment with 15-20 participants 4-16 weeks after recruitment
Secondary Adverse events such as nausea, vomiting, vaginal irritation, abdominal pain, rashes, diarrhoea Investigators will ask about adverse events during weekly text questionnaires during the first four weeks and on the final questionnaire at 12 weeks follow up Between recruitment and 12 week follow up
Secondary Recurrence or persistence of infection by 12 weeks Investigators will ask about symptoms of infection on the final 12 week questionnaire and assess infection status by analysis of self-taken vaginal samples At 12 week follow up
Secondary Feasibility of obtaining data on healthcare use This will be assessed by comparing reported healthcare use in final 12 week questionnaires with a medical record search in 30 participants Last 6 months of study
Secondary Percentage of participants who complete twice weekly symptom questionnaires for the first four weeks after recruitment. This will be assessed from analysis of questionnaires. During the 12 weeks after recruitment
Secondary Percent of self-taken samples suitable for microbiological analysis This will be assessed from microbiological analysis of self-taken vaginal samples During the 12 weeks after recruitment
See also
  Status Clinical Trial Phase
Completed NCT03930745 - Suppression Of Bacterial Vaginosis (BV) [SUBVert] Phase 2
Completed NCT02863536 - A Study of the New Medical Device Polybactum® N/A
Completed NCT03187457 - PreFem: "What Happens to the Vaginal Microbiota When a BV Infection is Treated With Metronidazole?" N/A
Recruiting NCT02185456 - Validation of a Novel Diagnostic, Prognostic Assay for Bacterial Vaginosis Phase 0
Completed NCT02150655 - Study of the Microbiota, Metabolome, and Environmental Toxins in Relation to Reproductive Health in Rwandan Women Phase 0
Completed NCT01450462 - Vitamin D and Sexual Health N/A
Recruiting NCT01558388 - Probiotic Versus Placebo as Adjuvant for Bacterial Vaginosis Treatment During Pregnancy Phase 4
Not yet recruiting NCT00889356 - Evaluate Efficacy, Tolerability & Safety of Combination of Clindamycin and Ketoconazole for the Treatment of Mixed-Type Vaginosis, Bacterial Vaginosis and Candidiasis Phase 3
Completed NCT01471457 - Trial of Trimosan Gel Effect on Pessary-associated Bacterial Vaginosis Phase 2/Phase 3
Completed NCT00545181 - Recurrent Bacterial Vaginosis and Vaginal Acidifying Gel Trial N/A
Completed NCT00556179 - Lactoserum (Dermacyd Femina®) and Prevention of Recurrence of Bacterial Vaginosis Phase 4
Completed NCT02236156 - Efficacy and Safety Study of SPL7013 Gel to Prevent the Recurrence of Bacterial Vaginosis (BV) Phase 3
Completed NCT01335373 - Observational Program Neo-Penotran® Forte N/A
Completed NCT00752193 - Safety and Efficacy of a Vaginally Administered Probiotic Lactobacilli Delivery System. N/A
Active, not recruiting NCT00536848 - The Effect of Probiotics on the Immune Status, Diarrhea and Bacterial Vaginosis Cure Rate Among HIV Patients Phase 2/Phase 3
Completed NCT00510614 - Tinidazole for Recurrent Bacterial Vaginosis: A Pilot Study Phase 0
Suspended NCT00207480 - Brief, Behavioral Intervention to Reduce Douching Among Adolescent and Young Women Phase 1
Recruiting NCT05278130 - Serial Screening and Treatment of Bacterial Vaginosis Trial N/A
Completed NCT02905890 - The Effect of Norethisterone Enanthate on Recurrent Bacterial Vaginosis Phase 4
Recruiting NCT06135974 - Vaginal lIve Biotherapeutic RANdomized Trial Early Phase 1