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| Name | Class |
|---|---|
| BioMérieux | INDUSTRY |
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The ACT-FAST study aims to compare commercially available Rapid Antimicrobial Susceptibility Testing (R-AST) tools with the current standard of care for patients with Bloodstream Infections (BSI). The primary objective is to evaluate whether "early targeted" antibiotic prescriptions, guided by these rapid tests, can improve antimicrobial stewardship and patient clinical outcomes.
To facilitate the evaluation of various diagnostic tools-including those currently on the market and those emerging in the near future-this study utilizes an adaptive clinical trial platform. This flexible design allows for the continuous assessment of different R-AST technologies within a single master protocol, ensuring that the most effective diagnostic strategies are identified efficiently.
ACT-FAST is a multicenter, open-label, randomized, adaptive clinical trial designed as the first domain of a broader adaptive platform. The study evaluates the clinical and stewardship impact of "early targeted" antibiotic therapy guided by Rapid Antimicrobial Susceptibility Testing (R-AST) compared to standard empirical therapy in patients with suspected bloodstream infections (BSI).
The study population consists of patients with positive blood cultures for whom pathogen identification and susceptibility results are still pending. Participants are randomized into one of two diagnostic strategies:
In both arms, results are communicated to the treating clinicians, who adjust antibiotic therapy based on their clinical judgment and routine practice. As an adaptive trial, the randomization ratios may be adjusted based on the number of active intervention arms. To ensure scientific rigor, outcome assessors remain blinded to the treatment allocation.
Patients are followed for a total of 28 days to assess clinical outcomes and antimicrobial stewardship objectives. The platform design allows for the integration of additional R-AST tools or interventions through future protocol amendments, ensuring the study remains at the forefront of diagnostic innovation.
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| Label | Type | Description | Intervention Names |
|---|---|---|---|
| Experimental arm | Experimental | Diagnostic approach to blood cultures using rapid microbiological diagnosis testing (R-AST) |
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| Standard of care | Active Comparator | Diagnostic approach to blood cultures using the standard method |
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| Name | Type | Description | Arm Group Labels | Other Names |
|---|---|---|---|---|
| Diagnostic Test: Rapid Antimicrobial Susceptibility Testing (R-AST) guided Stewardship | Diagnostic Test | In patients randomized to the intervention arm, the test under evaluation will be performed by the Humanitas Core Lab on positive blood cultures. The test is expected to provide results in a certain amount of time. The Lab will notify the ID consultant as soon as the test provides the first result (even if partial). The ID physician is expected to revise the antibiotic therapy according to the identified species, guided by the tool. |
| Measure | Description | Time Frame |
|---|---|---|
| Compare commercially available R-AST testing tools with the current standard of care in BSI patients | The primary objective is to determine if a management strategy based on a R-AST test results shorten the time for randomization to antimicrobial stewardship goals compared to standard care. "Antimicrobial stewardship goals" is defined by the administration of an antimicrobial agent that meets both conditions: i) an antimicrobial agent active against the organism(s) documented at conventional AST on blood culture (in vitro); AND ii) an antimicrobial agent targeted for the pathogen(s) identified, and not excessively broad spectrum | 24 hours |
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Inclusion Criteria:
Exclusion Criteria:
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| Name | Role | Phone | Extension | |
|---|---|---|---|---|
| Michele Bartoletti, MD, PhD | Contact | + 39 02 8224 3568 | michele.bartoletti@hunimed.eu |
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| Facility | Status | City | State | ZIP | Country | Contacts |
|---|---|---|---|---|---|---|
| Infectious Disease Unit - IRCCS Humanitas Research Hospital | Recruiting | Rozzano | Milan | 20089 | Italy |
| PubMed Identifier | Type | Citation | Retractions |
|---|---|---|---|
| 32267771 | Background | Angus DC, Berry S, Lewis RJ, Al-Beidh F, Arabi Y, van Bentum-Puijk W, Bhimani Z, Bonten M, Broglio K, Brunkhorst F, Cheng AC, Chiche JD, De Jong M, Detry M, Goossens H, Gordon A, Green C, Higgins AM, Hullegie SJ, Kruger P, Lamontagne F, Litton E, Marshall J, McGlothlin A, McGuinness S, Mouncey P, Murthy S, Nichol A, O'Neill GK, Parke R, Parker J, Rohde G, Rowan K, Turner A, Young P, Derde L, McArthur C, Webb SA. The REMAP-CAP (Randomized Embedded Multifactorial Adaptive Platform for Community-acquired Pneumonia) Study. Rationale and Design. Ann Am Thorac Soc. 2020 Jul;17(7):879-891. doi: 10.1513/AnnalsATS.202003-192SD. | |
| 25888181 |
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It is a multi-center, open-label, parallel, adaptive randomized trial.
Groups of randomization:
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| Standard of Care (SOC) | Diagnostic Test | Patients will be managed as usual, which typically consists of receiving standard empirical antibiotics, according to the local prescribing policy, continued until the results of the routine standard AST protocol in current use. In any case, both arms have standard microbiology culture and susceptibility testing performed, according to standard laboratory procedures and current guidelines, with results typically available after 48-72 hours from a blood culture positive result (day 3). |
|
| Background |
| Marquet K, Liesenborgs A, Bergs J, Vleugels A, Claes N. Incidence and outcome of inappropriate in-hospital empiric antibiotics for severe infection: a systematic review and meta-analysis. Crit Care. 2015 Feb 16;19(1):63. doi: 10.1186/s13054-015-0795-y. |
| 17386104 | Background | Mettler J, Simcock M, Sendi P, Widmer AF, Bingisser R, Battegay M, Fluckiger U, Bassetti S. Empirical use of antibiotics and adjustment of empirical antibiotic therapies in a university hospital: a prospective observational study. BMC Infect Dis. 2007 Mar 26;7:21. doi: 10.1186/1471-2334-7-21. |
| 12435215 | Background | Friedman ND, Kaye KS, Stout JE, McGarry SA, Trivette SL, Briggs JP, Lamm W, Clark C, MacFarquhar J, Walton AL, Reller LB, Sexton DJ. Health care--associated bloodstream infections in adults: a reason to change the accepted definition of community-acquired infections. Ann Intern Med. 2002 Nov 19;137(10):791-7. doi: 10.7326/0003-4819-137-10-200211190-00007. |
| 34599691 | Background | Evans L, Rhodes A, Alhazzani W, Antonelli M, Coopersmith CM, French C, Machado FR, Mcintyre L, Ostermann M, Prescott HC, Schorr C, Simpson S, Wiersinga WJ, Alshamsi F, Angus DC, Arabi Y, Azevedo L, Beale R, Beilman G, Belley-Cote E, Burry L, Cecconi M, Centofanti J, Coz Yataco A, De Waele J, Dellinger RP, Doi K, Du B, Estenssoro E, Ferrer R, Gomersall C, Hodgson C, Moller MH, Iwashyna T, Jacob S, Kleinpell R, Klompas M, Koh Y, Kumar A, Kwizera A, Lobo S, Masur H, McGloughlin S, Mehta S, Mehta Y, Mer M, Nunnally M, Oczkowski S, Osborn T, Papathanassoglou E, Perner A, Puskarich M, Roberts J, Schweickert W, Seckel M, Sevransky J, Sprung CL, Welte T, Zimmerman J, Levy M. Surviving sepsis campaign: international guidelines for management of sepsis and septic shock 2021. Intensive Care Med. 2021 Nov;47(11):1181-1247. doi: 10.1007/s00134-021-06506-y. Epub 2021 Oct 2. No abstract available. |
| 32222766 | Background | Proschan M, Evans S. Resist the Temptation of Response-Adaptive Randomization. Clin Infect Dis. 2020 Dec 31;71(11):3002-3004. doi: 10.1093/cid/ciaa334. |
| 28089763 | Background | Lin J, Bunn V. Comparison of multi-arm multi-stage design and adaptive randomization in platform clinical trials. Contemp Clin Trials. 2017 Mar;54:48-59. doi: 10.1016/j.cct.2017.01.003. Epub 2017 Jan 13. |
| 29490655 | Background | Pallmann P, Bedding AW, Choodari-Oskooei B, Dimairo M, Flight L, Hampson LV, Holmes J, Mander AP, Odondi L, Sydes MR, Villar SS, Wason JMS, Weir CJ, Wheeler GM, Yap C, Jaki T. Adaptive designs in clinical trials: why use them, and how to run and report them. BMC Med. 2018 Feb 28;16(1):29. doi: 10.1186/s12916-018-1017-7. |
| 36999909 | Background | Ilges D, Tande AJ, Stevens RW. A Broad Spectrum of Possibilities: Spectrum Scores as a Unifying Metric of Antibiotic Utilization. Clin Infect Dis. 2023 Jul 26;77(2):167-173. doi: 10.1093/cid/ciad189. |
| 21521410 | Background | Mulatero F, Bonnardel V, Micolaud C. The way forward for fast microbiology. Clin Microbiol Infect. 2011 May;17(5):661-7. doi: 10.1111/j.1469-0691.2011.03520.x. |
| 34384380 | Background | Pascale R, Corcione S, Bussini L, Pancaldi L, Giacobbe DR, Ambretti S, Lupia T, Costa C, Marchese A, De Rosa FG, Bassetti M, Viscoli C, Bartoletti M, Giannella M, Viale P. Non-fermentative gram-negative bloodstream infection in northern Italy: a multicenter cohort study. BMC Infect Dis. 2021 Aug 12;21(1):806. doi: 10.1186/s12879-021-06496-8. |
| 35227308 | Background | Ruddel H, Thomas-Ruddel DO, Reinhart K, Bach F, Gerlach H, Lindner M, Marshall JC, Simon P, Weiss M, Bloos F, Schwarzkopf D; MEDUSA study group. Adverse effects of delayed antimicrobial treatment and surgical source control in adults with sepsis: results of a planned secondary analysis of a cluster-randomized controlled trial. Crit Care. 2022 Feb 28;26(1):51. doi: 10.1186/s13054-022-03901-9. |
| 18787454 | Background | Leone M, Martin C. How to break the vicious circle of antibiotic resistances? Curr Opin Crit Care. 2008 Oct;14(5):587-92. doi: 10.1097/MCC.0b013e32830f1deb. |
| 25672873 | Background | Bernhard M, Lichtenstern C, Eckmann C, Weigand MA. The early antibiotic therapy in septic patients--milestone or sticking point? Crit Care. 2014 Nov 30;18(6):671. doi: 10.1186/s13054-014-0671-1. |
| 32187986 | Background | Breijyeh Z, Jubeh B, Karaman R. Resistance of Gram-Negative Bacteria to Current Antibacterial Agents and Approaches to Resolve It. Molecules. 2020 Mar 16;25(6):1340. doi: 10.3390/molecules25061340. |
| 23473333 | Background | Goto M, Al-Hasan MN. Overall burden of bloodstream infection and nosocomial bloodstream infection in North America and Europe. Clin Microbiol Infect. 2013 Jun;19(6):501-9. doi: 10.1111/1469-0691.12195. Epub 2013 Mar 8. |
| ID | Term |
|---|---|
| D018805 | Sepsis |
| ID | Term |
|---|---|
| D007239 | Infections |
| D018746 | Systemic Inflammatory Response Syndrome |
| D007249 | Inflammation |
| D010335 | Pathologic Processes |
| D013568 | Pathological Conditions, Signs and Symptoms |
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