Acute Pyelonephritis Without Severity Symptoms Due to ESBL-producing E.ColiFOXICOLINCT01820793
Efficacy and Pharmacokinetic/Pharmacodynamic Parameters of Cefoxitin in Women With Acute Pyelonephritis Without Severity Symptoms Due to Extended-spectrum β-lactamase Producing Escherichia Coli
A study testing Cefoxitin in people with Acute Pyelonephritis Without Severity Symptoms Due to ESBL-producing E.Coli, run by Assistance Publique - Hôpitaux de Paris at 1 site in France.
Trial summary
Escherichia coli is the primary cause of urinary tract infections and Gram-negative bacteremia worldwide. Since the early years of the 21st century, E.coli has acquired a new mechanism of resistance to antibiotics: extended spectrum β-lactamase (ESBL), type CTX-M. Read more about this study
- Who is it for?
- Ages 18 years and older, women only
- Conditions the study is for
- Acute Pyelonephritis Without Severity Symptoms Due to ESBL-producing E.Coli
- What is being tested?
- Cefoxitin
- Type of treatment
- Injection or infusion
- Could I receive a placebo?
- No, everyone receives an active treatment
- How many people
- 9 participants
- Where
- 1 siteFrance
- Study dates
- May 2013to Nov 2015
- Phase
- Interventional
- Are there results?
- None posted in the registry
Key requirements
Who can take part, as listed by the sponsor. Only the study team can confirm whether you are eligible, so take this list to your doctor.
- Ages 18 years and older
- Women only
- No healthy volunteers
- Adult, Older adult
Who may be able to join
- Inclusion Criteria: Acute pyelonephritis without severity symptoms with a positive urine culture for ESBL-producing E. coli (cefoxitin-sensitive); antibiotic treatment should have been prescribed before inclusion for the empirical treatment of pyelonephritis, providing it is not active in vitro against ESBL-producing E. coli strain.
- Presenting at least a functional sign of urinary infection (dysuria, cloudy urine, pain on urination, pelvic or lumbar pain)
- Temperature >38 ° or < 36° during the infectious episode
- Imaging of the urinary ways realized within (echography) 72 hours preceding the inclusion.
Who cannot join
- Pregnant women
- β-lactam allergy;
- antimicrobial therapy active in vitro against ESBL-producing E.coli pyelonephritis instituted prior to enrolment;
- life expectancy <30 days;
- creatinine clearance <30 ml/min;
- patient under guardianship or without healthcare coverage.
Show all 10Show fewer
- Sign of sepsis severe or septic shock
- Major cognitive confusions
- Patients having refused to give her consent form in writing
- Not membership in a national insurance scheme or in the Universal Health Coverage (CMU).
Trial locations and contacts
1 site in 1 country.
About this study
Official title: Efficacy and Pharmacokinetic/Pharmacodynamic Parameters of Cefoxitin in Women With Acute Pyelonephritis Without Severity Symptoms Due to Extended-spectrum β-lactamase Producing Escherichia Coli.
Escherichia coli is the primary cause of urinary tract infections and Gram-negative bacteremia worldwide. Since the early years of the 21st century, E.coli has acquired a new mechanism of resistance to antibiotics: extended spectrum β-lactamase (ESBL), type CTX-M. These ESBL inactivate most β-lactams, the preferred class of antibiotics for the treatment of severe E.coli infections. Moreover, the strains that produce these ESBL are often resistant to other classes of antibiotics. Their rapid spread constitutes a major public health concern because of a serious risk of therapeutic impasse. Treatment options in cases of infection with ESBL-producing E.coli are often limited to carbapenems, a class of more recently developed β-lactams. Carbapenems have a very wide spectrum of activity but their effectiveness is threatened by the emergence of strains producing carbapenemases. The development of therapeutic alternatives to treat ESBL-producing E.coli infections is therefore essential. Cephamycins, including cefoxitin, are β-lactams marketed in the seventies but their use was practically abandoned when wide spectrum antibiotics became available. They are distinguished by the presence of an α-methoxy group in position 7 which interferes with the action of the extended-spectrum β-lactamase and renders it ineffective against cephamycins. Cefoxitin is therefore active in vitro against ESBL-producing E.coli and offers the advantage of a narrower antibacterial spectrum, thus reducing the selection pressure and the emergence of resistance. However, the in vivo activity of cefoxitin for the treatment of ESBL-producing E.coli infections has never been measured. Furthermore, available pharmacokinetic and pharmacodynamic (PK/PD) data for cefoxitin are dated and incomplete, which raises many questions concerning the optimal dosage regimen. We have shown in a mouse model of ESBL-producing E. coli CTX-M pyelonephritis that cefoxitin efficacy is comparable to that of carbapenems without selecting resistant mutants. Cefoxitin could thus constitute an alternative to carbapenems for the treatment of pyelonephritis caused by ESBL-producing E.coli.
Read the detailed description
Clinical Study:
This is a prospective, multicentric, non-comparative, proof of concept study evaluating the efficacy of cefoxitin in women with acute ESBL-producing E. coli pyelonephritis without severity symptoms. This antibiotic is already commercially available and its tolerability profile is well known, but it has never been previously evaluated to treat this particular type of infection.
The primary objective of this study is to assess the clinical and microbiological response to treatment with cefoxitin in women with acute pyelonephritis without severity symptoms due to ESBL-producing E. coli.
The secondary objectives are:
In women with pyelonephritis caused by ESBL-producing E.coli:
- Gain a better understanding of the current epidemiology of ESBL-producing E. coli associated with febrile UTI
- Assess the impact of cefoxitin use on the emergence of resistance in the colonising bacteria of the gastrointestinal tract in women with pyelonephritis treated with cefoxitin and identify the associated mechanisms
- Characterise the PK/PD parameters for cefoxitin in order to optimise the dosage strategy for that antibiotic
- Assess the tolerance profile of cefoxitin
Determination of sample size, feasibility of enrolment No determination of the minimal sample size could be calculated in this proof of concept study but a total enrolment of 40 patients in the 8 participating centers seems adequate to evaluate the efficacy of cefoxitin for treating uncomplicated acute pyelonephritis and to study its impact on the emergence of resistance. Half of enrolled women will have repeated measurement of serum concentration of cefoxitin: 6 blood samples collected within 6 hours following the injection of one of the doses received between the 3rd and the last day of treatment. A security assessment by an independent committee will be conducted on the first five patients enrolled.
The precise incidence of ESBL-producing E.coli acute pyelonephritis without severity symptoms in the 8 participating centers is unknown. At BICHAT hospital, the incidence of ESBL-producing E.coli in 2008 was 0.66/100 admissions (57 778 admissions/year). It was 0.46/1000 hospitalisation days at BEAUJON in 2009 with 36.5% from urine samples. The same year, Saint-Louis hospital recorded 18 bacteremias secondary to infection with ESBL-producing E.coli with 6% originating from a UTI. Those last numbers underestimate the actual incidence of ESBL-producing E coli pyelonephritis at that hospital, only taking into account the UTI associated with bacteremias. We estimate that there are approximately 10 cases of ESBL-producing E.coli pyelonephritis in these centers each year.
Outline and conduct of the study/investigations performed by the CIC As soon as the antibiogram is available, confirming diagnosis of an ESBL-producing E. coli and after verification of the inclusion criteria, information and obtention of the the written consent, cefoxitin (2 grams intravenous perfusion of 30 minutes every 6 hours) will be given for 10 days. A control visit and urine culture will be performed at day 2, day 7 and at the end of treatment, day 10. A rectal swab will be performed at enrolment before the first dose of antibiotic, at the end of treatment (day 10) and at day 40. The inclusion period will be 2 years and each patient's participation will last 40 days.
The PK study will be performed on 20 patients enrolled at one of the 4 CIC at hospital Saint-Louis, BICHAT, HENRI-MONDOR and HEGP. Measurement of serum concentration of cefoxitin will be done on the 3rd day of treatment, or between the 9th and 12th dose of antibiotic. Samples will be taken as follows: t0 (immediately before beginning infusing cefoxitin); t30 min (at the end of infusion); t45 min ; t1h ; t3h ; t6h (before the next dose) for a total of 6 samples.
Evaluation criteria for the primary objective Clinical and microbiological response defined at the end of cefoxitin treatment by the presence of the 3 following criteria: (i) afebrile (temperature > 36° and < 38°C), (ii) resolution of urinary symptoms present at the time of diagnosis: dysuria, urgency, frequency, cloudy urine, pain on urination, pelvic or lumbar pain (iii) sterile urine culture.
Evaluation criteria for the secondary objective (i) Clinical and microbiological response at 48h after beginning treatment with cefoxitin; (ii) Early relapse at day 40; (iii) PK/PD parameters; (iv) side effects of cefoxitin.
Statistics, PK/PD modelling, cefoxitin dosing regimen optimisation Qualitative variables will be reported in percentage of the studied subjects and quantitative variables by a median. Comparisons will use non-parametric tests. The tests will be bilateral and use a significance threshold of 5%. The rate of clinical and microbiological response at the end of treatment with cefoxitin will be reported as a percentage with an estimate of the confidence interval (CI) of 95% (using a binomial distribution). PK analysis will be conducted using a population approach and average PK parameters for cefoxitin will be estimated as well as interpatient variability. The PK population analysis will examine different demographic and clinical covariables in order to weigh their influence on PK/PD parameters; the studied covariables will be: age, weight, BMI, blood pressure and creatinine clearance. In order to study the relationship between pharmacokinetics and clinical response at H48 and at the end of treatment as well as at J40±5, the patients' PK parameters will be compared using the Wilcoxon and Mann-Whitney non-parametric tests.
ESBL-producing E.coli strains responsible for pyelonephritis in women: typing and identification of subtype
ESBL-producing strains will be screened with the synergy method, using a disk containing a 3rd generation cephalosporin, like cefotaxime, and another disk containing a β-lactamase inhibitor, clavulanic acid, according to the recommendations of the competent authorities of antibiogram. The isolated strains will then be analysed further on three main aspects: (i) the phylogenetic group will be determined by multiplex PCR (ii) the strains' sequence-typing will be done using Multiple Sequence Typing (iii) the presence of 46 genes associated with extra-intestinal virulence factors will be identified through multiplex PCR.
The determination of ESBL type will also be done by PCR.
Detection of cefoxitin resistant strains colonising the gastrointestinal tract of women with pyelonephritis before treatment with cefoxitin ; emergence of resistance under treatment and determination of associated mechanisms of resistance to cefoxitin
Screening for enterobacteriaceae with reduced-sensitivity to cefoxitin will be done by plating a rectal swab (or a stool sample) on DRIGALSKI media containing 10 mg/l of cefoxitin. Acquired resistance mechanisms in species normally sensitive to cefoxitin (E. coli, Klebsiella spp.) will be characterised: hyperproduction of Amp C in E. coli, hyperexpression of efflux pumps and changes in purines in E. coli et K. pneumoniae. If comparing strains is necessary, it will be done using ERIC2 PCR as previously described in literature.
Ethical aspects
The research protocol will be presented to the ethics committee, once consent from the promoter is obtained (with proof of the required insurance and payment of fees). The opinion of the committee will be included in a form delivered by the promoter to the competent authorities before beginning the study. All enrolled patients will be required to sign an informed consent before any investigation or treatment is performed. The consent forms will be kept for 30 years by the CIC. Patients will be informed of the results after completion of the study.
Expected public health impact of study
The expected benefits of using cefoxitin in women with uncomplicated acute ESBL-producing E.coli pyelonephritis are (i) an clinical and microbiological effectiveness similar to that of carbapenems;(ii) a decrease in the selection pressure on bacteria colonising the gastrointestinal tract, thus contributing to prevent the emergence of carbapenemase-producing Enterobacteriaceae (iii) a decrease in drug-associated cost.
- Being tested
- Cefoxitin
- Keywords
- antibiotic resistance, E.coli, cefoxitin, pyelonephritis
- Medical subject headings
- Escherichia coli Infections, Pyelonephritis
What participants receive
What participants receive. In a randomised study each person is assigned to one group by chance.
CefoxitinDrug
proof of concept study to evaluate the efficacy of cefoxitin (2 grams every 6 hours for 10 days) in 40 women presenting acute ESBL-producing E.coli pyelonephritis without severity symptoms and to perform on half of the participants repeated measurements of cefoxitin serum levels (6 blood samples within 6 hours following an injection).
| Study group | Role | What they receive |
|---|---|---|
| cefoxitin | Experimental | this study is centered on women with pyelonephritis without severity symptoms due to ESBL-producing E. coli. Receives: Drug: Cefoxitin |
What is being measured
The primary outcome is the main question the study is designed to answer.
To assess Clinical and microbiological response
Clinical and microbiological response defined at the end of cefoxitin treatment by the presence of the 3 following criteria: (i) afebrile (temperature > 36°C and < 38°C), (ii) resolution of urinary symptoms present at the time of diagnosis: dysuria, urgency, frequency, cloudy urine, pain on urination, pelvic or lumbar pain (iii) sterile urine culture.
Measured: 10 days
Secondary outcomes (6)
To detect of cefoxitin resistant strains
detection of cefoxitin resistant strains colonising the gastrointestinal tract of women with pyelonephritis before treatment with cefoxitin, emergence of resistance under treatment and determination of associated mechanisms of resistance to cefoxitin
Measured: 40±5 days
To assess the bacteriological Relapse
Early relapse at day 40 defined by clinical and microbiological success at 10 days and absence of clinical signs at 40 days
Measured: 40 days
To evaluate Clinical and microbiological response
Clinical and microbiological response at 48h after beginning treatment with cefoxitin
Measured: 48 h
to measure the Pharmacokinetic parameters
measure of total clearance of elimination and Measure of the volume of distribution
Measured: 48 h
Measure of efficacy of cefoxitin
side effects of cefoxitin all days
Measured: 10 days
To measure the Pharmacodynamic parameters
PD parameters;
Measured: 48 h
Timeline
From the start of the study to its completion; the mark is today. Estimated dates are the sponsor’s plan.
- First posted29 Mar 2013 (estimated)
- Study startMay 2013
- Primary completionJul 2015
- Study completionNov 2015
Why it stopped: Not enought inclusion
Resources
- Official record on ClinicalTrials.govThe registry entry this page is built from, with its full change history.
- Other trials for Acute Pyelonephritis Without Severity Symptoms Due to ESBL-producing E.ColiStudies of the same condition, open and under way.
- More trials run by Assistance Publique - Hôpitaux de ParisThe sponsor's other registered studies.
- What the trial phases meanHow a treatment moves from first tests in people to approval.
More details
For doctors and researchers: how the study is designed, who runs it, and its registry IDs.
Study design
- Study type
- Interventional
- Phase
- Phase N/A
- Primary purpose
- Treatment
- Allocation
- Not applicable
- Intervention model
- Single group
- Masking
- None (open label)
- Enrolment
- 9 participants (actual)
Sponsor and investigators
- Lead sponsor
- Assistance Publique - Hôpitaux de Paris
- Sponsor type
- University, hospital or other
- Responsible party
- Sponsor
- Investigators
- Agnès LEFORT, Pr, Principal investigator, Assistance Publique - Hôpitaux de Paris
IDs, dates and publications
- ClinicalTrials.gov ID
- NCT01820793
- Sponsor's protocol ID
- P120202
- Other IDs
- 2012-002730-36
- Acronym
- FOXICOLI
- Status last verified
- Jan 2018
- First submitted
- 19 Feb 2013
- Last updated
- 12 Jan 2018
- Results posted
- No
- Data monitoring committee
- Yes
Study at a glance
From the registry record, last updated by the sponsor on 12 Jan 2018. Recruitment status is as the sponsor reported it: confirm with the study team.
- Official title
- Efficacy and Pharmacokinetic/Pharmacodynamic Parameters of Cefoxitin in Women With Acute Pyelonephritis Without Severity Symptoms Due to Extended-spectrum β-lactamase Producing Escherichia Coli.
- ClinicalTrials.gov ID
- NCT01820793
- Acronym / sponsor ID
- FOXICOLI / P120202
- Keywords
- antibiotic resistance, E.coli, cefoxitin, pyelonephritis
- Study type
- Interventional
- Recruitment status
- TerminatedReason stopped: Not enought inclusion
- Enrolment
- 9 participants (actual)
- Lead sponsor
- Assistance Publique - Hôpitaux de ParisUniversity, hospital or other
- Study start
- May 2013
- Primary completion
- Jul 2015 (actual)
- Study completion
- Nov 2015 (actual)
- First posted
- 29 Mar 2013 (estimated)
- Results
- Not posted in the source record
Clinical summary
The research question as the sponsor registered it. This describes what the study plans to test, not what it found.
Escherichia coli is the primary cause of urinary tract infections and Gram-negative bacteremia worldwide. Since the early years of the 21st century, E.coli has acquired a new mechanism of resistance to antibiotics: extended spectrum β-lactamase (ESBL), type CTX-M. These ESBL inactivate most β-lactams, the preferred class of antibiotics for the treatment of severe E.coli infections. Moreover, the strains that produce these ESBL are often resistant to other classes of antibiotics. Their rapid spread constitutes a major public health concern because of a serious risk of therapeutic impasse. Treatment options in cases of infection with ESBL-producing E.coli are often limited to carbapenems, a class of more recently developed β-lactams. Carbapenems have a very wide spectrum of activity but their effectiveness is threatened by the emergence of strains producing carbapenemases. The development of therapeutic alternatives to treat ESBL-producing E.coli infections is therefore essential. Cephamycins, including cefoxitin, are β-lactams marketed in the seventies but their use was practically abandoned when wide spectrum antibiotics became available. They are distinguished by the presence of an α-methoxy group in position 7 which interferes with the action of the extended-spectrum β-lactamase and renders it ineffective against cephamycins. Cefoxitin is therefore active in vitro against ESBL-producing E.coli and offers the advantage of a narrower antibacterial spectrum, thus reducing the selection pressure and the emergence of resistance. However, the in vivo activity of cefoxitin for the treatment of ESBL-producing E.coli infections has never been measured. Furthermore, available pharmacokinetic and pharmacodynamic (PK/PD) data for cefoxitin are dated and incomplete, which raises many questions concerning the optimal dosage regimen. We have shown in a mouse model of ESBL-producing E. coli CTX-M pyelonephritis that cefoxitin efficacy is comparable to that of carbapenems without selecting resistant mutants. Cefoxitin could thus constitute an alternative to carbapenems for the treatment of pyelonephritis caused by ESBL-producing E.coli.
Detailed description
Clinical Study:
This is a prospective, multicentric, non-comparative, proof of concept study evaluating the efficacy of cefoxitin in women with acute ESBL-producing E. coli pyelonephritis without severity symptoms. This antibiotic is already commercially available and its tolerability profile is well known, but it has never been previously evaluated to treat this particular type of infection.
The primary objective of this study is to assess the clinical and microbiological response to treatment with cefoxitin in women with acute pyelonephritis without severity symptoms due to ESBL-producing E. coli.
The secondary objectives are:
In women with pyelonephritis caused by ESBL-producing E.coli:
- Gain a better understanding of the current epidemiology of ESBL-producing E. coli associated with febrile UTI
- Assess the impact of cefoxitin use on the emergence of resistance in the colonising bacteria of the gastrointestinal tract in women with pyelonephritis treated with cefoxitin and identify the associated mechanisms
- Characterise the PK/PD parameters for cefoxitin in order to optimise the dosage strategy for that antibiotic
- Assess the tolerance profile of cefoxitin
Determination of sample size, feasibility of enrolment No determination of the minimal sample size could be calculated in this proof of concept study but a total enrolment of 40 patients in the 8 participating centers seems adequate to evaluate the efficacy of cefoxitin for treating uncomplicated acute pyelonephritis and to study its impact on the emergence of resistance. Half of enrolled women will have repeated measurement of serum concentration of cefoxitin: 6 blood samples collected within 6 hours following the injection of one of the doses received between the 3rd and the last day of treatment. A security assessment by an independent committee will be conducted on the first five patients enrolled.
The precise incidence of ESBL-producing E.coli acute pyelonephritis without severity symptoms in the 8 participating centers is unknown. At BICHAT hospital, the incidence of ESBL-producing E.coli in 2008 was 0.66/100 admissions (57 778 admissions/year). It was 0.46/1000 hospitalisation days at BEAUJON in 2009 with 36.5% from urine samples. The same year, Saint-Louis hospital recorded 18 bacteremias secondary to infection with ESBL-producing E.coli with 6% originating from a UTI. Those last numbers underestimate the actual incidence of ESBL-producing E coli pyelonephritis at that hospital, only taking into account the UTI associated with bacteremias. We estimate that there are approximately 10 cases of ESBL-producing E.coli pyelonephritis in these centers each year.
Outline and conduct of the study/investigations performed by the CIC As soon as the antibiogram is available, confirming diagnosis of an ESBL-producing E. coli and after verification of the inclusion criteria, information and obtention of the the written consent, cefoxitin (2 grams intravenous perfusion of 30 minutes every 6 hours) will be given for 10 days. A control visit and urine culture will be performed at day 2, day 7 and at the end of treatment, day 10. A rectal swab will be performed at enrolment before the first dose of antibiotic, at the end of treatment (day 10) and at day 40. The inclusion period will be 2 years and each patient's participation will last 40 days.
The PK study will be performed on 20 patients enrolled at one of the 4 CIC at hospital Saint-Louis, BICHAT, HENRI-MONDOR and HEGP. Measurement of serum concentration of cefoxitin will be done on the 3rd day of treatment, or between the 9th and 12th dose of antibiotic. Samples will be taken as follows: t0 (immediately before beginning infusing cefoxitin); t30 min (at the end of infusion); t45 min ; t1h ; t3h ; t6h (before the next dose) for a total of 6 samples.
Evaluation criteria for the primary objective Clinical and microbiological response defined at the end of cefoxitin treatment by the presence of the 3 following criteria: (i) afebrile (temperature > 36° and < 38°C), (ii) resolution of urinary symptoms present at the time of diagnosis: dysuria, urgency, frequency, cloudy urine, pain on urination, pelvic or lumbar pain (iii) sterile urine culture.
Evaluation criteria for the secondary objective (i) Clinical and microbiological response at 48h after beginning treatment with cefoxitin; (ii) Early relapse at day 40; (iii) PK/PD parameters; (iv) side effects of cefoxitin.
Statistics, PK/PD modelling, cefoxitin dosing regimen optimisation Qualitative variables will be reported in percentage of the studied subjects and quantitative variables by a median. Comparisons will use non-parametric tests. The tests will be bilateral and use a significance threshold of 5%. The rate of clinical and microbiological response at the end of treatment with cefoxitin will be reported as a percentage with an estimate of the confidence interval (CI) of 95% (using a binomial distribution). PK analysis will be conducted using a population approach and average PK parameters for cefoxitin will be estimated as well as interpatient variability. The PK population analysis will examine different demographic and clinical covariables in order to weigh their influence on PK/PD parameters; the studied covariables will be: age, weight, BMI, blood pressure and creatinine clearance. In order to study the relationship between pharmacokinetics and clinical response at H48 and at the end of treatment as well as at J40±5, the patients' PK parameters will be compared using the Wilcoxon and Mann-Whitney non-parametric tests.
ESBL-producing E.coli strains responsible for pyelonephritis in women: typing and identification of subtype
ESBL-producing strains will be screened with the synergy method, using a disk containing a 3rd generation cephalosporin, like cefotaxime, and another disk containing a β-lactamase inhibitor, clavulanic acid, according to the recommendations of the competent authorities of antibiogram. The isolated strains will then be analysed further on three main aspects: (i) the phylogenetic group will be determined by multiplex PCR (ii) the strains' sequence-typing will be done using Multiple Sequence Typing (iii) the presence of 46 genes associated with extra-intestinal virulence factors will be identified through multiplex PCR.
The determination of ESBL type will also be done by PCR.
Detection of cefoxitin resistant strains colonising the gastrointestinal tract of women with pyelonephritis before treatment with cefoxitin ; emergence of resistance under treatment and determination of associated mechanisms of resistance to cefoxitin
Screening for enterobacteriaceae with reduced-sensitivity to cefoxitin will be done by plating a rectal swab (or a stool sample) on DRIGALSKI media containing 10 mg/l of cefoxitin. Acquired resistance mechanisms in species normally sensitive to cefoxitin (E. coli, Klebsiella spp.) will be characterised: hyperproduction of Amp C in E. coli, hyperexpression of efflux pumps and changes in purines in E. coli et K. pneumoniae. If comparing strains is necessary, it will be done using ERIC2 PCR as previously described in literature.
Ethical aspects
The research protocol will be presented to the ethics committee, once consent from the promoter is obtained (with proof of the required insurance and payment of fees). The opinion of the committee will be included in a form delivered by the promoter to the competent authorities before beginning the study. All enrolled patients will be required to sign an informed consent before any investigation or treatment is performed. The consent forms will be kept for 30 years by the CIC. Patients will be informed of the results after completion of the study.
Expected public health impact of study
The expected benefits of using cefoxitin in women with uncomplicated acute ESBL-producing E.coli pyelonephritis are (i) an clinical and microbiological effectiveness similar to that of carbapenems;(ii) a decrease in the selection pressure on bacteria colonising the gastrointestinal tract, thus contributing to prevent the emergence of carbapenemase-producing Enterobacteriaceae (iii) a decrease in drug-associated cost.
Study design
- Primary purpose
- Treatment
- Allocation
- Not applicable
- Intervention model
- Single group
- Masking
- None (open label)
- Number of arms
- 1
| Arm | Type | Receives |
|---|---|---|
| cefoxitin | Experimental | Drug: Cefoxitinthis study is centered on women with pyelonephritis without severity symptoms due to ESBL-producing E. coli. |
Who may qualify
- Ages
- 18 years and older
- Sex
- Female only
- Healthy volunteers
- Not accepted
- Age groups
- Adult, Older adult
Key inclusion criteria (4 listed)
- Inclusion Criteria: Acute pyelonephritis without severity symptoms with a positive urine culture for ESBL-producing E. coli (cefoxitin-sensitive); antibiotic treatment should have been prescribed before inclusion for the empirical treatment of pyelonephritis, providing it is not active in vitro against ESBL-producing E. coli strain.
- Presenting at least a functional sign of urinary infection (dysuria, cloudy urine, pain on urination, pelvic or lumbar pain)
- Temperature >38 ° or < 36° during the infectious episode
- Imaging of the urinary ways realized within (echography) 72 hours preceding the inclusion.
Key exclusion criteria (10 listed)
- Pregnant women
- β-lactam allergy;
- antimicrobial therapy active in vitro against ESBL-producing E.coli pyelonephritis instituted prior to enrolment;
- life expectancy <30 days;
- creatinine clearance <30 ml/min;
Eligibility is decided by the study team after screening; this overview does not establish that a patient qualifies. Full inclusion and exclusion criteria.
Interventions
| Intervention | Type | Arms |
|---|---|---|
| Cefoxitinproof of concept study to evaluate the efficacy of cefoxitin (2 grams every 6 hours for 10 days) in 40 women presenting acute ESBL-producing E.coli pyelonephritis without severity symptoms and to perform on half of the participants repeated measurements of cefoxitin serum levels (6 blood samples within 6 hours following an injection). | Drug | cefoxitin |
Primary outcome
To assess Clinical and microbiological response
Time frame: 10 days
Clinical and microbiological response defined at the end of cefoxitin treatment by the presence of the 3 following criteria: (i) afebrile (temperature > 36°C and < 38°C), (ii) resolution of urinary symptoms present at the time of diagnosis: dysuria, urgency, frequency, cloudy urine, pain on urination, pelvic or lumbar pain (iii) sterile urine culture.
6 secondary outcomes
To detect of cefoxitin resistant strains
Time frame: 40±5 days
To assess the bacteriological Relapse
Time frame: 40 days
To evaluate Clinical and microbiological response
Time frame: 48 h
to measure the Pharmacokinetic parameters
Time frame: 48 h
Measure of efficacy of cefoxitin
Time frame: 10 days
To measure the Pharmacodynamic parameters
Time frame: 48 h
Results and safety
The study was stopped early (reason given: Not enought inclusion). Results are not available in the source record.
Research links
- Official record on ClinicalTrials.govLast updated by the sponsor 12 Jan 2018.
Referral and contact
AzTrials does not enrol participants or take referrals. Contact the study team or a site listed below; they decide who can take part. This study is not recruiting at the moment.
Agnès LEFORT, Pr principal investigator
Assistance Publique - Hôpitaux de Paris
1 site in 1 country: see every site and its status.
Questions about this trial
What is this clinical trial studying?
A study testing Cefoxitin in people with Acute Pyelonephritis Without Severity Symptoms Due to ESBL-producing E.Coli, run by Assistance Publique - Hôpitaux de Paris at 1 site in France.
The full registered description is in the About this study section and the official record.
Who may be eligible to take part?
The sponsor lists 4 inclusion and 10 exclusion criteria. Eligibility is decided by the study team after screening, so read the full criteria and contact a listed site.
Is this clinical trial currently recruiting?
The record says: stopped early, as of the sponsor's last update on 12 Jan 2018. Status can change between updates, so confirm with the study contact before making plans.
Where is the study taking place?
The record lists 1 site in France. Whether a site is taking part right now should be confirmed with that site. See every site.
What are the possible benefits and risks?
They depend on the study and the treatment, and no study can promise a benefit. The study team explains the known risks during informed consent, before anyone joins; the record itself does not list them.
Are results available for this study?
The study was stopped early (reason given: Not enought inclusion). Results are not available in the source record.
How can a doctor refer a patient or contact the research team?
The record lists no contact. The official record names the sponsor, who can be asked directly. AzTrials does not enrol participants or take referrals.
What does the primary outcome measure?
To assess Clinical and microbiological response (time frame: 10 days). It is what the study was designed to measure, not a finding.
Where can I read the original study information?
Does a listing mean the treatment is approved or proven to work?
No. A listing means the study is registered. It does not show that the treatment is safe, works, or is approved by a regulator.
How often is this information updated?
AzTrials copies changed records from ClinicalTrials.gov every night and reloads the whole registry every week. The sponsor last updated this record on 12 Jan 2018.