Skip to content

Antibiotics for Kidney Transplant Recipients

Trial of Antibiotic Strategies for Kidney Transplant Recipients

Status
Not yet recruiting
Phases
Phase 4
Study type
Interventional
Source
ClinicalTrials.gov
Registry ID
NCT07106125
Acronym
TASK
Enrollment
50
Registered
2025-08-06
Start date
2028-10-01
Completion date
2033-12-01
Last updated
2026-09-11

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

Conditions

Antibiotic Prophylaxis, Feasibility Pilot Study, Kidney Transplant, Remote Patient Monitoring, Urinary Tract Infection(UTI)

Keywords

kidney transplant, UTI prevention, antibiotic prophylaxis, decentralized trial, remote clinical trial

Brief summary

The goal of this clinical trial is to learn if a common antibiotic called trimethoprim-sulfamethoxazole (TMP-SMX) can help prevent urinary tract infections (UTIs) in children and young adults who recently had a kidney transplant. Most people take TMP-SMX for about 6 months after getting a kidney transplant. In this study, researchers want to see what happens if people keep taking it for 6 more months. The main questions this study is asking are: * Does TMP-SMX lower the number of UTIs in the first year after transplant? * What side effects or problems do participants have while taking TMP-SMX? Researchers will compare TMP-SMX to a placebo (a look-alike pill that does not contain any medication) to see if TMP-SMX works to prevent UTIs. Participants will: * Take either TMP-SMX or a placebo pill by mouth every day for 6 months * Have three visits to touch base with the study team about any issues * Complete short monthly online surveys about any symptoms or side effects * Share blood and urine test results from their regular transplant clinic visits

Interventions

Kidney transplant recipients will continue to take TMP-SMX daily from months 6-12 after transplant

OTHERUsual Care

Participants will take a placebo from months 6-12 after transplant and continue to receive all standard usual care related to their kidney transplant status

Sponsors

University of California, San Francisco
Lead SponsorOTHER

Study design

Allocation
RANDOMIZED
Intervention model
PARALLEL
Primary purpose
PREVENTION
Masking
TRIPLE (Subject, Caregiver, Investigator)

Eligibility

Sex/Gender
ALL
Age
12 Years to 29 Years
Healthy volunteers
No

Inclusion criteria

* Able to take capsules orally * Kidney transplant performed at a UCSF facility within the last 6 months * Most recent glomerular filtration rate (GFR) \>30 mL/min/1.73 m2 * Tolerated initial 6 months of post-transplant TMP-SMX (defined as no intentional periods of TMP-SMX cessation in first 6 months after transplant due to hyperkalemia, allergic reaction, or unexpected/excessive neutropenia)

Exclusion criteria

* History of intolerance or allergy to trimethoprim (TMP) and/or sulfamethoxazole (SMX) * History of UTI due to a TMP-SMX-resistant organism in the first 6 months after transplant * Moderate or severe neutropenia (absolute neutrophil count \<1,000 cells/μL) on most recent bloodwork available at the time of recruitment * Uncontrolled hyperkalemia (serum potassium ≥5.0 mEq/L) on most recent bloodwork available at the time of recruitment * Provider-determined/documented need for either continuation or discontinuation of TMP-SMX prophylaxis that would preclude the patient's randomization * Current pregnancy * Incarcerated individuals/prisoners * Inability to provide informed consent or assent, and no legally authorized representative available

Design outcomes

Primary

MeasureTime frameDescription
Agreement Between Participant Self-Report and Medical Records on Clinical Events (Measured by Cohen's Kappa)From enrollment to the end of the study drug period (6 months)The investigators will look at how closely participants' self-reports of events (urinary tract and associated infections, acute kidney injury events, and hospitalizations) match what is identified through their electronic health records. To do this, the investigators will use a statistical tool called Cohen's kappa, which shows how much agreement there is between the two sources.
Number of Participants Who Enroll After ScreeningBaseline/Study Day 1 (i.e., date that informed consent is signed for those who choose to participate)The investigators will track how many people decide to join and how many people decline to join the study after completing the screening process.
Medication Adherence Assessed by Self-ReportFrom enrollment to the end of the study drug period (6 months)The investigators will ask participants how often they are taking the pills as directed, through monthly surveys and at all study visits.
Trial RetentionFrom enrollment to the end of the study drug period (6 months)The investigators will keep track of how many participants complete the last study visit

Secondary

MeasureTime frameDescription
Event Rate of All-Cause Hospitalizations by Treatment ArmFrom enrollment through the end of the study period (12 months)The investigators will keep track of when participants are hospitalized, using feedback from participants themselves (for the first 6 months) as well as data from their electronic medical records (for 6 additional months, for a total of 12 months). Event rates will be used to compare outcomes between the treatment (TMP-SMX continuation) and placebo arms.
Urinary Tract Infections by Treatment ArmFrom enrollment to the end of the study period (12 months)The investigators will keep track of when participants report having a urinary tract infection, using feedback from participants themselves (for the first 6 months) as well as data from their electronic medical records (for 6 additional months, for a total of 12 months). Event rates will be used to compare outcomes between the treatment (TMP-SMX continuation) and placebo arms.
Acute Kidney Injury Events by Treatment ArmFrom enrollment to the end of the study period (12 months)The investigators will keep track of when participants report having acute kidney injury events, using feedback from participants themselves (for the first 6 months) as well as data from their electronic medical records (for 6 additional months, for a total of 12 months). Event rates will be used to compare outcomes between the treatment (TMP-SMX continuation) and placebo arms.
Adverse Events by Treatment ArmFrom enrollment to the end of the study drug period (6 months)The investigators will keep track of when participants report side effects and adverse events, using feedback from participants themselves as well as data from their electronic medical records

Countries

United States

Contacts

CONTACTPrincipal Investigator
alexandra.bicki@ucsf.edu415-476-3548
PRINCIPAL_INVESTIGATORAlexandra Bicki, MD

University of California, San Francisco

Outcome results

None listed

Source: ClinicalTrials.gov · Data processed: Sep 12, 2026