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Bladder treatments to prevent recurrent urinary tract Infections (the VESPER trial): a randomised study comparing different treatment options with both participants and researchers knowing which treatment is given.

Intravesical preparations for recurrent urinary tract infection prevention (the VESPER trial): a multi-arm, multi-site open label randomised superiority trial

Status
Recruiting
Phases
Phase 4
Study type
Interventional
Source
ISRCTN
Registry ID
ISRCTN68263889
Enrollment
412
Registered
2025-01-08
Start date
2025-04-15
Completion date
Unknown
Last updated
2026-03-02

For informational purposes only — not medical advice. Sourced from public registries and may not reflect the latest updates. Terms

Conditions

Recurrent uncomplicated urinary tract infection. Infections and Infestations

Interventions

Current interventions as of 09/05/2025: Intravesical Prophylactic Treatment: - Intravesical antibiotics – 80 mg of Gentamicin diluted to 50 ml with normal saline instilled into the bladder weekly for

Sponsors

Newcastle upon Tyne Hospitals NHS Foundation Trust
Lead Sponsor

Eligibility

Sex/Gender
Female
Age
16 Years to 120 Years

Inclusion criteria

Inclusion criteria: Current inclusion criteria as of 09/05/2025: 1. Women (assigned female at birth) with recurrent uncomplicated UTI who have failed first-line treatments (at least three episodes of symptomatic antibiotic-treated urinary infection in the previous 12 months or two episodes of UTI in the last 6 months despite the use of first-line treatments). Failed first-line treatments can include antibiotics, methenamine (antiseptic) or vaginal oestrogen. 2. Women aged >16 years 3. Women able to receive intravesical treatments and take second-line oral antibiotic prophylaxis 4. Women able to give informed consent 5. Women willing to adhere to a 12-month study protocol Previous inclusion criteria: 1. Women with recurrent uncomplicated UTI who have failed first-line treatments (at least three episodes of symptomatic antibiotic-treated urinary infection in the previous 12 months or two episodes of UTI in the last 6 months despite the use of first-line treatments). Failed first-line treatments can include antibiotics, methenamine (antiseptic) or vaginal oestrogen 2. Women aged =16 years 3. Women able to receive intravesical treatments and take second-line oral antibiotic prophylaxis 4. Women able to give informed consent 5. Women willing to adhere to a 12-month study protocol

Exclusion criteria

Exclusion criteria: Current exclusion criteria as of 09/05/2025: 1. Women (assigned female at birth) unable to receive intravesical treatments or second-line oral antibiotic prophylaxis 2. Women with structural or functional urinary tract abnormalities considered contributory to rUTI 3. Pregnancy or intended pregnancy in the next 12 months 4. Women who are breastfeeding Previous exclusion criteria: 1. Women unable to receive intravesical treatments or second-line oral antibiotic prophylaxis 2. Women with structural or functional urinary tract abnormalities considered contributory to rUTI 3. Pregnancy or intended pregnancy in the next 12 months 4. Women who are breastfeeding

Design outcomes

Primary

MeasureTime frame
Rate of symptomatic, antibiotic-treated UTI, self-reported by participants from randomisation to the 6-month treatment period

Secondary

MeasureTime frame
Incremental cost per quality-adjusted life year (QALY) gained, based on responses to EQ-5D-5L, over 12 months

Countries

United Kingdom

Contacts

Public ContactJanine Bates
batesmj@cardiff.ac.uk+44 29 20687616

Outcome results

None listed

Source: ISRCTN (via WHO ICTRP) · Data processed: Mar 14, 2026