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Trial details imported from ClinicalTrials.gov
For full trial details, please see the original record at
https://clinicaltrials.gov/study/NCT03632642
Registration number
NCT03632642
Ethics application status
Date submitted
22/07/2018
Date registered
15/08/2018
Titles & IDs
Public title
Penicillin Against Flucloxacillin Treatment Evaluation
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Scientific title
Pilot Randomised Controlled Trial of Penicillin Versus Flucloxacillin for Definitive Treatment of Invasive Penicillin Susceptible Staphylococcus Aureus
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Secondary ID [1]
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HREC/17/QRBW/620
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Universal Trial Number (UTN)
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Trial acronym
PANFLUTE
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Linked study record
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Health condition
Health condition(s) or problem(s) studied:
Staphylococcus Aureus
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Condition category
Condition code
Infection
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Other infectious diseases
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Intervention/exposure
Study type
Interventional
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Description of intervention(s) / exposure
Treatment: Drugs - Benzylpenicillin
Treatment: Drugs - Flucloxacillin
Active comparator: Benzylpenicillin arm - Patients randomised to benzylpenicillin will be treated according to Therapeutic Guidelines 15th Edition. During hospitalisation, the standard dose will be 1.8g Q4H IVI for uncomplicated BSIs and 2.4g Q4H for deep-seated or critical illness infections.
Active comparator: Flucloxacillin arm - Patients randomised to flucloxacillin will be treated according to Therapeutic Guidelines 15th Edition. During hospitalisation, the standard dose will be 2g Q6H IVI or 2g Q4H for deep-seated or criticial illness infections.
Treatment: Drugs: Benzylpenicillin
The study drug will be administered for a minimum of 2 weeks (the minimal currently accepted duration of IV therapy for SAB.) For patients who do not fulfill criteria for 2 weeks of therapy, the duration of treatment will be 4 to 6 weeks and will be made by the treating clinician.
Treatment: Drugs: Flucloxacillin
The study drug will be administered for a minimum of 2 weeks (the minimal currently accepted duration of IV therapy for SAB.) For patients who do not fulfill criteria for 2 weeks of therapy, the duration of treatment will be 4 to 6 weeks and will be made by the treating clinician.
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Intervention code [1]
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Treatment: Drugs
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Comparator / control treatment
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Control group
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Outcomes
Primary outcome [1]
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Feasibility of DOOR
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Assessment method [1]
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The primary outcome of the study will utilise a desirability of outcome ranking (DOOR) to assess superiority of benzylpenicillin against flucloxacillin.
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Timepoint [1]
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90 day
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Secondary outcome [1]
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Adverse Events
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Assessment method [1]
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All adverse events
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Timepoint [1]
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90 day
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Secondary outcome [2]
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Mortality
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Assessment method [2]
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All cause mortality at days 14, 42 and 90
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Timepoint [2]
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14, 42 and 90 days
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Secondary outcome [3]
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Time to defervescence
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Assessment method [3]
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Defined as either the time from randomisation to a temperature \< 37.5 degrees celsius for greater than or equal to 24 hours
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Timepoint [3]
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From randomisation to any period where a temperature is < 37.5 degrees celsius for greater than or equal to 24 hours
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Secondary outcome [4]
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Persistent bacteraemia
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Assessment method [4]
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At day 3 and day 7 post randomisation
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Timepoint [4]
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Day 3 and day 7
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Secondary outcome [5]
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Microbiologic relapse
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Assessment method [5]
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Positive blood culture following at least 72 hours after a preceeding negative culture
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Timepoint [5]
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Any period within 90 days from randomisation following a negative blood culture at least 3 days prior
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Secondary outcome [6]
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Microbiologic treatment failure
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Assessment method [6]
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Positive sterile site culture at least 14 days after randomisation
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Timepoint [6]
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Any period within day 14 to day 90 from randomisation
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Secondary outcome [7]
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Healthcare costs
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Assessment method [7]
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Direct healthcare costs
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Timepoint [7]
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90 day
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Eligibility
Key inclusion criteria
* Bloodstream infection with Staphylococcus aureus susceptible to penicillin and negative for penicillinase by phenotypic methods.
* No more than 72 hours has elapsed since the first positive blood culture was drawn
* Patient is aged 18 years and over
* The patient or approved proxy is able to provide informed consent
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Minimum age
18
Years
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Maximum age
No limit
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Sex
Both males and females
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Can healthy volunteers participate?
No
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Key exclusion criteria
* Patient with a recorded allergy to penicillin including:
1. Hypersensitivity type reaction
2. Stephens-Johnson syndrome
3. Rash
4. Urticaria
* Contraindications based upon other recorded allergies, such as gastrointestinal upset, will be at the discretion of the treating clinician
* Patient with significant polymicrobial bacteraemia (skin contaminants excepted)
* Treated with non-curative intent
* Pregnancy or breast-feeding
* Patient currently receiving concomitant antimicrobials with activity against S. aureus which cannot be ceased or substituted.
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Study design
Purpose of the study
Treatment
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Allocation to intervention
Randomised controlled trial
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Procedure for enrolling a subject and allocating the treatment (allocation concealment procedures)
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Methods used to generate the sequence in which subjects will be randomised (sequence generation)
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Masking / blinding
Open (masking not used)
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Who is / are masked / blinded?
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Intervention assignment
Parallel
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Other design features
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Phase
Phase 4
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Type of endpoint/s
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Statistical methods / analysis
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Recruitment
Recruitment status
Withdrawn
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Data analysis
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Reason for early stopping/withdrawal
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Other reasons
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Date of first participant enrolment
Anticipated
1/07/2019
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Actual
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Date of last participant enrolment
Anticipated
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Actual
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Date of last data collection
Anticipated
1/07/2020
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Actual
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Sample size
Target
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Accrual to date
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Final
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Recruitment in Australia
Recruitment state(s)
QLD
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Recruitment hospital [1]
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Brisbane Private Hospital - Brisbane
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Recruitment postcode(s) [1]
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4000 - Brisbane
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Funding & Sponsors
Primary sponsor type
Other
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Name
The University of Queensland
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Address
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Country
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Ethics approval
Ethics application status
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Summary
Brief summary
There is theroretical superiority with benzylpenicillin over orther anti-staphylococcal penicillins (ASP) for treatment of penicillin susceptible S. aureus (PSSA) infections due to a lower MIC distribution when compared with ASPs active against PSSA, combined with the ability to obtain higher levels of free non-protein-bound plasma drug concentrations. Although the data to support this theoretical advantage is limited, many clinicians in Australia (and worldwide) use benzylpenicillin for therapy in this situation despite many international guidelines cautioning against this. This uncertainty is significant given that 1) S. aureus bacteraemia (SAB) is associated with a high mortality and significant morbidity, 2) S. aureus is one of the most common organisms isolated from blood cultures, 3) SAB is the most common reason for consultation with an Infectious Disease specialist (which itself has been shown to improve outcomes) and 4) a significant proportion (up to 20%) of SAB isolates in Australia will be reported as susceptible to penicillin, a proportion which appears to be increasing over the past 10 years in Australia and internationally. Given the frequency of PSSA and the associated morbidity and mortality related to SABs in general, a definitive study to determine the optimal therapy for PSSA is required. In a recent survey of Infectious Diseases Physicians and Clinical Microbiologists in Australasia, 87% of respondents were willing to randomise patients to either benzylpenicillin or flucloxacillin for a clinical trial, whist 71% responded that they would switch therapy from flucloxacillin to benzylpenicillin for treatment of PSSA BSIs in clinical practice (unpublished data). Therefore, the investigators see the opportunity to determine the feasibility of a definitive study comparing benzylpenicillin against flucloxacillin (or other ASP) for treatment of PSSA bloodstream infections.
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Trial website
https://clinicaltrials.gov/study/NCT03632642
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Trial related presentations / publications
Kirby WM. EXTRACTION OF A HIGHLY POTENT PENICILLIN INACTIVATOR FROM PENICILLIN RESISTANT STAPHYLOCOCCI. Science. 1944 Jun 2;99(2579):452-3. doi: 10.1126/science.99.2579.452. Baddour LM, Wilson WR, Bayer AS, Fowler VG Jr, Tleyjeh IM, Rybak MJ, Barsic B, Lockhart PB, Gewitz MH, Levison ME, Bolger AF, Steckelberg JM, Baltimore RS, Fink AM, O'Gara P, Taubert KA; American Heart Association Committee on Rheumatic Fever, Endocarditis, and Kawasaki Disease of the Council on Cardiovascular Disease in the Young, Council on Clinical Cardiology, Council on Cardiovascular Surgery and Anesthesia, and Stroke Council. Infective Endocarditis in Adults: Diagnosis, Antimicrobial Therapy, and Management of Complications: A Scientific Statement for Healthcare Professionals From the American Heart Association. Circulation. 2015 Oct 13;132(15):1435-86. doi: 10.1161/CIR.0000000000000296. Epub 2015 Sep 15. Erratum In: Circulation. 2015 Oct 27;132(17):e215. doi: 10.1161/CIR.0000000000000332. Circulation. 2016 Aug 23;134(8):e113. doi: 10.1161/CIR.0000000000000427. Circulation. 2018 Jul 31;138(5):e78-e79. doi: 10.1161/CIR.0000000000000594. Gill VJ, Manning CB, Ingalls CM. Correlation of penicillin minimum inhibitory concentrations and penicillin zone edge appearance with staphylococcal beta-lactamase production. J Clin Microbiol. 1981 Oct;14(4):437-40. doi: 10.1128/jcm.14.4.437-440.1981. Kaase M, Lenga S, Friedrich S, Szabados F, Sakinc T, Kleine B, Gatermann SG. Comparison of phenotypic methods for penicillinase detection in Staphylococcus aureus. Clin Microbiol Infect. 2008 Jun;14(6):614-6. doi: 10.1111/j.1469-0691.2008.01997.x. Epub 2008 Apr 5. Coombs GW, Daly DA, Pearson JC, Nimmo GR, Collignon PJ, McLaws ML, Robinson JO, Turnidge JD; Australian Group on Antimicrobial Resistance. Community-onset Staphylococcus aureus Surveillance Programme annual report, 2012. Commun Dis Intell Q Rep. 2014 Mar 31;38(1):E59-69. Nissen JL, Skov R, Knudsen JD, Ostergaard C, Schonheyder HC, Frimodt-Moller N, Benfield T. Effectiveness of penicillin, dicloxacillin and cefuroxime for penicillin-susceptible Staphylococcus aureus bacteraemia: a retrospective, propensity-score-adjusted case-control and cohort analysis. J Antimicrob Chemother. 2013 Aug;68(8):1894-900. doi: 10.1093/jac/dkt108. Epub 2013 Apr 18. Coombs GW, Daley DA, Thin Lee Y, Pearson JC, Robinson JO, Nimmo GR, Collignon P, Howden BP, Bell JM, Turnidge JD; Australian Group on Antimicrobial Resistance. Australian Group on Antimicrobial Resistance Australian Staphylococcus aureus Sepsis Outcome Programme annual report, 2014. Commun Dis Intell Q Rep. 2016 Jun 30;40(2):E244-54. Cheng MP, Rene P, Cheng AP, Lee TC. Back to the Future: Penicillin-Susceptible Staphylococcus aureus. Am J Med. 2016 Dec;129(12):1331-1333. doi: 10.1016/j.amjmed.2016.01.048. Epub 2016 Feb 26. Evans SR, Rubin D, Follmann D, Pennello G, Huskins WC, Powers JH, Schoenfeld D, Chuang-Stein C, Cosgrove SE, Fowler VG Jr, Lautenbach E, Chambers HF. Desirability of Outcome Ranking (DOOR) and Response Adjusted for Duration of Antibiotic Risk (RADAR). Clin Infect Dis. 2015 Sep 1;61(5):800-6. doi: 10.1093/cid/civ495. Epub 2015 Jun 25. Erratum In: Clin Infect Dis. 2023 Jan 6;76(1):182. doi: 10.1093/cid/ciac352.
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Public notes
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Contacts
Principal investigator
Name
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David Paterson
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Address
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UQCCR
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Phone
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Fax
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Email
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Contact person for public queries
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Contact person for scientific queries
Data sharing statement
Will individual participant data (IPD) for this trial be available (including data dictionaries)?
Undecided
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No/undecided IPD sharing reason/comment
As this study is a feasibility pilot study of a planned definitive RCT, it is likely that IPD will be made available to future potential collaborators on a definitive study in order to determine the feasibility, calculate an appropriate sample size and determine if any changes are required to the study protocol and SAP in particular.
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What supporting documents are/will be available?
No Supporting Document Provided
Results publications and other study-related documents
No documents have been uploaded by study researchers.
Results not provided in
https://clinicaltrials.gov/study/NCT03632642