ClinicalTrials.gg
RecruitingNCT05597540SHORTCUTUpdated May 29, 2024

Efficacy of 7 Days Versus 14 Days of Antibiotic Therapy for Acute Pyelonephritis in Kidney Transplant Recipients, a Multicentre Randomized Non-inferiority Trial.

A Phase 3 interventional study of Short antibiotic treatment and Usual antibiotic treatment in Pyelonephritis Acute and Kidney Transplant Infection, sponsored by Assistance Publique - Hôpitaux de Paris. Recruiting at 9 sites in France. Open to participants aged 18 Years and older. Per ClinicalTrials.gov, last updated 2024-05-29.

Sponsored by Assistance Publique - Hôpitaux de Paris · Phase 3, Interventional, and Treatment

From the registry’s dates

  • Started Feb 2024; still recruiting 2 years 8 months later.
Phase
Phase 3
Study type
Interventional
Enrollment
470
Allocation
Randomized
Ages
18 Years and older
Sex
All
01

Study summary

Infections are a major cause of morbidity and mortality in solid organ transplant recipients. In kidney transplant recipients (KTR) urinary tract infection (UTI) represent 45-72% of all infections, and 30% of all hospitalizations for sepsis. Acute transplant pyelonephritis are the most common complications occurring in more than 20% of patients, mainly in the first year after transplantation. They are associated with an increased risk of acute kidney rejection and long-term kidney graft dysfunction. Gram-negative bacteria, mainly E. coli, account for more than 70% of UTI in KTR. As those infections are favoured by urinary tract modifications/defects and immunosuppression, they are often recurrent and necessitate repeated courses of antibiotics. Selective pressure due to antibiotic consumption, along with frequent hospital admissions and immunosuppression, are well known risk factors for the development of antibiotic resistant infections. Multidrug (MDR)- or extensively (XDR)- drug resistant Enterobacteriaceae including ESBL- or carbapenemase-producing organisms, are thus increasingly observed in transplant units and represent a global threat as very few new antibiotics are expected in the next decade.

One main strategy to limit antimicrobial resistance is to reduce the duration of antibiotic treatment. A 7 day-course is recommended for simple acute pyelonephritis (APN) treated with fluoroquinolones or parenteral B-lactams, prolonged up to 10 or 14 days in the presence of underlying disease at risk of complications. Most KT teams treat patients between 14-21 days as recommended by American guidelines. However, the need to extend treatment duration in immunosuppressed patients is a poorly defined concept and the optimal duration of treatment for APN in KTR is not known as these patients are excluded from most studies.

As there is an urgent need to reduce antibiotic consumption in this population at high risk of developing infections due to resistant pathogens, the hypothesis is that a 7 day-treatment is sufficient to cure APN with good clinical response after 48h of treatment in KTR and is as effective as 14 days.

02

Conditions studied

  • Pyelonephritis Acute
  • Kidney Transplant Infection

Browse trials for

Keywords

  • antibiotic therapy
  • duration of antibiotic treatment reduction
03

In context

Pyelonephritis

79 studies on the registry are indexed under Pyelonephritis; 12 are open to participants now.

This study's planned enrollment of 470 is above the median of 175 across 62 interventional studies indexed under Pyelonephritis.

Browse Pyelonephritis studies →

Lead sponsor

Assistance Publique - Hôpitaux de Paris is the lead sponsor of 3,592 studies on the registry; 1,033 are open to participants now.

Counted across the registry records on this site, refreshed daily.

04

Who can participate

Ages eligible
18 Years and older
Sexes eligible
All
Accepts healthy volunteers
No

Go through the criteria one by one — yes, no or not sure — and take the list to your doctor or the study team. Kept in this browser only.

Inclusion criteria

  • Age >18 years KTR
  • APN defined by: fever (T°≥38°C) (with or without clinical signs and/or symptoms of UTI) and pyuria (≥10\^4 white blood cells/mL or ≥10/mm3) and positive urine culture (uropathogen ≥10\^3 CFU/mL susceptible to the empirically administrated antibiotic)
  • No confirmed or suspected febrile non urinary bacterial infection
  • No urologic/renal complication at baseline imaging (abscess, obstruction...)
  • Favourable early response to antibiotic treatment:48 to 60 hours after the first dose of antibiotic effective against the causative uropathogen) defined by: T°\<38°C and improvement (or resolution) of signs and/or symptoms of urinary tract infection if present at diagnosis
  • Written

Exclusion criteria

Exclusion Criteria:

  • Severe or complicated condition

    • Any rapidly progressing disease or immediately life-threatening illness, including, but not limited to, septic shock, current or impeding respiratory failure, acute heart or liver failure
    • Admission or stay in intensive care unit at baseline
    • Obstruction of the urinary tract
    • Renal, perinephric or prostatic abscess
  • Prior inclusion in this study
  • Current participation to another interventional study
  • Dual antibiotic therapy (prophylactic antibiotic such as cotrimoxazole allowed) (only 1 dose of aminoside is allowed before randomization)
  • First month post transplantation
  • Current indwelling catheter (including bladder catheter, ureteral stents, percutaneous nephrostomy tubes)
  • Neurogenic bladder
  • Enterocystoplasty
  • Immunodeficiency or therapy not related to kidney transplantation including hematologic , cancer, asplenia, neutropenia\<500 neutrophils/mm3
  • Pregnancy, breastfeeding
  • or previous severe adverse drug reaction to the antibiotic therapy
  • Unable or unwilling, in the judgment of the investigator, to comply with the protocol
  • \<1 month
  • Patient under legal guardianship or without healthcare coverage
  • Homeless patient
  • Women with not using adequate
Terms in these criteria, in plain language(7)

Underlined terms in the criteria open these too. Explained by clinicaltrials.gg, not part of the registry record. The study team decides who can take part.

Informed consent

Before you join, the study team explains what taking part involves — its purpose, what happens, the risks and possible benefits — and answers your questions, so you can decide freely. Consent is usually recorded on a form (the informed consent form, ICF) signed by you or, where the law allows, by someone legally authorised to decide for you.

You can keep asking questions during the study, you are told of new information that matters, and you can choose to leave at any time.

Immunosuppression

A weakened immune system. It can come from an illness, such as HIV or some blood cancers, or from medicines that turn the immune system down, for example after an organ transplant or for an autoimmune disease; steroids at higher doses count.

Read whether the line is about a condition or about medicines, and which medicines and doses it means.

Cancer (malignancy)

Malignancy means cancer. Criteria about another or earlier malignancy ask whether you have had a different cancer, usually within a set number of years.

Some are commonly allowed, such as treated skin cancers other than melanoma and early cancers removed completely — check the exceptions this study lists.

Hypersensitivity

An allergy, or another reaction of the immune system, to a substance. “Hypersensitivity to the study drug” means a known allergic reaction to it — not every side effect a medicine can have.

Life expectancy

The study doctor’s estimate of how long someone is likely to live. Criteria use it so that people can stay in the study long enough for it to answer its question.

Childbearing potential

Able to become pregnant: from the first period until menopause, unless permanently unable to through surgery (removal of the womb, or of both ovaries or both fallopian tubes).

Criteria for people of childbearing potential usually ask for a negative pregnancy test and for contraception during the study and for a time after it.

Contraception

Ways of preventing pregnancy. “Highly effective” methods fail less than 1% of the time a year when used correctly — for example an IUD or an implant.

Criteria usually say which methods count and how long to keep using them after the last dose, sometimes for male participants too. Some studies accept a partner’s vasectomy if it was confirmed successful and that person is the participant’s only sexual partner.

05

Study design

Phase
Phase 3
Primary purpose
Treatment
Allocation
Randomized
Intervention model
Parallel assignment
Masking
Single (Outcomes assessor)
Enrollment
470 participants (estimated)

Study arms

  • Experimental
    7 day-duration antibiotic treatment

    Drug: Short antibiotic treatment

  • Active comparator
    14 day-duration antibiotic treatment

    Drug: Usual antibiotic treatment

Interventions

  • DrugShort antibiotic treatment

    7 day-duration antibiotic treatment. The choice of antibiotic treatment is left to the medical team in charge of the patient.

  • DrugUsual antibiotic treatment

    14 day-duration antibiotic treatment. The choice of antibiotic treatment is left to the medical team in charge of the patient.

06

What researchers measure

Primary outcomes

  1. Clinical cure day 30

    Clinical cure and no additional antibiotic treatment since the end of antibiotic treatment up to the main evaluation at day 30. Clinical cure is defined as fever \<38°C and no symptoms of Urinary Tract Infection (UTI).

    Time frame: at day 30

Secondary outcomes

  1. Clinical cure day 90

    Clinical cure and no additional antibiotic treatment since the end of antibiotic treatment up to the main evaluation at day 90. Clinical cure is defined as fever \<38°C and no symptoms of Urinary Tract Infection (UTI).

    Time frame: at day 90

  2. Clinical cure day 180

    Clinical cure and no additional antibiotic treatment since the end of antibiotic treatment up to the main evaluation at day 180. Clinical cure is defined as fever \<38°C and no symptoms of Urinary Tract Infection (UTI).

    Time frame: at day 180

  3. Microbiological cure day 30

    Microbiological cure is defined as a sterile urine or uropathogene ≤ 10.3 CFU/mL in urine culture

    Time frame: at day 30

  4. Microbiological cure day 90

    Microbiological cure is defined as a sterile urine or uropathogene ≤ 10.3 CFU/mL in urine culture

    Time frame: at day 90

  5. Microbiological cure day 180

    Microbiological cure is defined as a sterile urine or uropathogene ≤ 10.3 CFU/mL in urine culture

    Time frame: at day 180

  6. Incidence of relapse/recurrence day 30

    Relapse or recurrence of the Urinary Tract Infection

    Time frame: at day 30

  7. Incidence of relapse/recurrence day 90

    Relapse or recurrence of the Urinary Tract Infection

    Time frame: at day 90

  8. Incidence of adverse event

    Incidence of adverse events imputable to antibiotic treatment

    Time frame: at day 180

  9. Kidney function

    Evaluated by MDRD or CKD MDRD : Modification of Diet in Renal Disease (MDRD) Study equation. Froissart M, Rossert J, Jacquot C, Paillard M, Houillier P. Predictive performance of the modification of diet in renal disease and Cockcroft-Gault equations for estimating renal function. J Am Soc Nephrol 2005;16(3):763-73. CKD-EPI (Chronic Kidney Disease EPIdemiology collaboration, Levey, 2009) A New Equation to Estimate Glomerular Filtration Rate. Andrew S. Levey, MD; Lesley A. Stevens, MD, MS; Christopher H. Schmid, PhD; Yaping (Lucy) Zhang, MS; Alejandro F. Castro III, MPH; Harold I. Feldman, MD, MSCE; John W. Kusek, PhD; Paul Eggers, PhD; Frederick Van Lente, PhD; Tom Greene, PhD; and Josef Coresh, MD, PhD, MHS, for the CKD-EPI (Chronic Kidney Disease Epidemiology Collaboration). Annals of Internal Medicine 2009;150(9):604-613

    Time frame: at day 90

  10. Kidney function

    Evaluated by MDRD or CKD MDRD : Modification of Diet in Renal Disease (MDRD) Study equation. Froissart M, Rossert J, Jacquot C, Paillard M, Houillier P. Predictive performance of the modification of diet in renal disease and Cockcroft-Gault equations for estimating renal function. J Am Soc Nephrol 2005;16(3):763-73. CKD-EPI (Chronic Kidney Disease EPIdemiology collaboration, Levey, 2009) A New Equation to Estimate Glomerular Filtration Rate. Andrew S. Levey, MD; Lesley A. Stevens, MD, MS; Christopher H. Schmid, PhD; Yaping (Lucy) Zhang, MS; Alejandro F. Castro III, MPH; Harold I. Feldman, MD, MSCE; John W. Kusek, PhD; Paul Eggers, PhD; Frederick Van Lente, PhD; Tom Greene, PhD; and Josef Coresh, MD, PhD, MHS, for the CKD-EPI (Chronic Kidney Disease Epidemiology Collaboration). Annals of Internal Medicine 2009;150(9):604-613

    Time frame: at day 180

  11. Hospital length of stay

    Hospitalisation length stay defined by the delay between the date of inclusion and the date of hospital discharge

    Time frame: Up to day 180

  12. Antibiotic consumption

    Antibiotic consumption (indication, dose and duration) throughout the follow-up will be recorded.

    Time frame: Up to day 180

  13. Rectal carriage

    Rectal carriage of antibiotic resistant Enterobacteriaceae

    Time frame: at inclusion

  14. Rectal carriage

    Rectal carriage of antibiotic resistant Enterobacteriaceae

    Time frame: at day 30

07

Study locations

4 of 9 sites recruiting
08

References and documents

Individual participant data

Plan to share: Undecided

No publications or documents are linked to this record.

09

Updates

Tracking since Sep 25, 2026
No changes since tracking began. The registry record was last updated on May 29, 2024, before this site started recording changes on Sep 25, 2026. Its history is on ClinicalTrials.gov ↗
10

Registry details

Key details

Study ID
NCT05597540
Responsible party
Sponsor
First posted
Oct 28, 2022
Start date
Feb 22, 2024
Primary completion
Mar 22, 2027 (estimated)
Completion
Aug 22, 2027 (estimated)
Last update
May 29, 2024

Study contacts

Matthieu Lafaurie, MD
Contact
matthieu.lafaurie@aphp.fr
142494117 ext. +33
Jérôme Lambert, Pr
Contact
jerome.lambert@u-paris.fr
142499742 ext. +33

Oversight

Data monitoring committee
Yes
FDA-regulated drug
No
FDA-regulated device
No
View the source record on ClinicalTrials.gov ↗

Interested in this study?

Eligibility is decided by the study team. Share this record with your doctor or contact the team directly.

Contact study team

Follow this study

Get an email when the registry record changes — status, dates, results — or when someone posts here.

Sign in to follow

Discussion

Questions and observations about this study, from anyone following it. Not medical advice, and not a channel to the study team — their contact details are on the registry record.

Sign in to join the discussion. Reading takes no account; posting does. You choose a display name, and a pseudonym is the default.

Nothing here yet. If you are running this trial, taking part in it, or weighing whether to, this is the place to say so.

Start the discussion