Идёт набор NCT05137119

Staphylococcus Aureus Network Adaptive Platform Trial

Фаза IV С лечением Staphylococcus Aureus Bacteremia

Ориентир для пациента и семьи

Простыми словами

Автоматическая сводка по структурированным данным реестра. Она помогает сориентироваться, но не заменяет официальный протокол или оценку врача.

Что изучают: В протоколе указаны: Cefazolin, Penicillin, Clindamycin, Vancomycin.
Кому может быть актуально: Состояния в реестре: Staphylococcus Aureus Bacteremia. Базовые параметры: Без ограничений · Все.
Что важно проверить: Возраст, диагноз и пол — только базовые ориентиры. Предыдущее лечение, анализы и другие обязательные условия указаны ниже в критериях участия.
Где проводится: США, Австралия, Канада, Франция, Германия +8
Следующий шаг: Сохраните исследование, покажите его лечащему врачу и уточните актуальный статус у исследовательского центра. Расходы, документы и поездка →

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Обзор

The Staphylococcus aureus Network Adaptive Platform (SNAP) trial is an International Multi-Centered Randomised Adaptive Platform Clinical Trial to evaluate a range of interventions to reduce mortality for patients with Staphylococcus Aureus bacteraemia (SAB).

Подробное описание

Infection of the bloodstream with the bacterium Staphylococcus aureus (Staphylococcus aureus bacteraemia, SAB) is a serious infection that results in 15-30% of affected patients dying within three months of acquiring the infection. Treatment of this infection requires patients to be hospitalised, treated with prolonged antibiotics through an intravenous line, and carefully examined for the occurrence of complications associated with this condition. At present, there are many treatment options in current use, with no clear agreement as to which of these is best. The SNAP trial aims to identify which treatment options for SAB results in the fewest patients dying within the first 90 days after an infection.

In contrast to a conventional clinical trial, the SNAP trial will examine multiple different treatment options at once. Patients will be randomly assigned to different concurrent treatment options currently considered acceptable in routine medical care, but as the trial progresses, more patients will be assigned to treatments that appear to have better outcomes than those with worse outcomes. The trial will adapt to accumulating trial evidence, on a regular basis, by removing treatment options found to be inferior, incorporating new treatment options, and ensuring that all patients in the trial receive the best treatments once they have been identified. Over time, we hope to determine the best combination of treatment options for patients with SAB.

The SNAP Trial infrastructure will also support a number of sub-studies. A list of all active sub-studies can be found on the SNAP website: https://www.snaptrial.com.au/substudies.

Вмешательства

Препарат Cefazolin
Cefazolin
Препарат Penicillin
benzylpenicillin
Препарат Clindamycin
Clindamycin
Препарат Vancomycin
Vancomycin or Daptomycin
Другое Effectiveness of early switch to oral antibiotics
This involves testing a strategy rather than individual antibiotic agents
Лучевая терапия Whole body FDG PET/CT Imaging
Whole body FDG PET/CT imaging will be performed using a standardised protocol describing patient preparation and minimum specifications for radiopharmaceutical production, quality control, and PET/CT acquisition.

Первичные конечные точки

All-cause mortality at 90 days after platform entry [Срок оценки: From randomisation (day 1) until day 90]

Вторичные конечные точки (12)

Core1: All-cause mortality at 14, 28 and 42 days after platform entry [Срок оценки: From randomisation (day 1) until day 14, 28, and 42]
Core2: Duration of survival censored at 90 days after platform entry [Срок оценки: From randomisation (day 1) until day 90]
Core3: Length of stay of acute index inpatient hospitalisation for those surviving until discharge from acute inpatient facilities (excluding HITH/COPAT/OPAT/rehab). [Срок оценки: From randomisation (day 1) until discharge from acute inpatient facilities, truncated at 90 days.]
Core4: Length of stay of total index hospitalisation for those surviving until hospital discharge (including HITH/COPAT/OPAT/rehab) [Срок оценки: From randomisation (day 1) to discharge from total index hospitalisation, truncated at 90 days]
Core5: Time to being discharged alive from the total index hospitalisation (including HITH/COPAT/OPAT/rehab) truncated at 90 days after platform entry [Срок оценки: From randomisation (day 1) to discharge from total index hospitalisation, truncated at 90 days]
Core6: Microbiological treatment failure defined as positive sterile site culture for S. aureus [of the same silo as the index isolate between 14 and 90 days after platform entry). [Срок оценки: From day 14 until day 90]
Core7: Diagnosis of new foci between 14 and 90 days after platform entry. [Срок оценки: From day 14 until day 90]
Core8: C. difficile diarrhoea as determined by a clinical laboratory in the 90 days following platform entry for participants ≥2 years of age. [Срок оценки: From randomisation (day 1) until day 90]
Core9: Serious adverse reactions (SARs) in the 90 days following platform entry [Срок оценки: From randomisation (day 1) until day 90]
Core10: Health economic costs as detailed in the health ecnomics appendix. [Срок оценки: From randomisation (day 1) until day 90]
Core11: Proportion of participants who have returned to their usual level of function at day 90. [Срок оценки: From randomisation (day 1) until day 90]
Core12: Desirability of outcome ranking 1 (DOOR1; modified Antibiotic Resistance Leadership Group version) [Срок оценки: From randomisation (day 1) until day 90]

Критерии участия

PLATFORM Inclusion Criteria:

Patients must fulfil all of the following criteria to be eligible to enter the SNAP trial:

Staphylococcus aureus complex grown from ≥1 blood culture
Admitted to a participating hospital at the time of eligibility assessment (OR if patient has died, they were admitted to this site anytime from the time of blood culture collection until the time of eligibility assessment)

PLATFORM Exclusion Criteria:

Potentially eligible participants meeting any of the following criteria at the time of eligibility assessment for platform entry will be excluded from the randomised platform (but may still participate in the registry):

Time of anticipated platform entry is greater than 72 hours post collection of the index blood culture (Where the time of culture collection is not recorded, the time of laboratory registration of the sample will be used as an alternative)
Polymicrobial bacteraemia, defined as more than one organism (at species level) in the index blood cultures OR in any subsequent blood culture reported between the collection of the index blood culture and platform eligibility assessment, excluding those organisms judged to be contaminants by either the microbiology laboratory or treating clinician.
Known previous participation in the randomised SNAP platform
Known positive blood culture for S. aureus (of the same silo: PSSA, MSSA or MRSA) between 72 hours and 180 days prior to the time of eligibility assessment
Treating team deems enrolment in the study is not in the best interest of the patient
Treating team believes that death is imminent and inevitable
Patient is for end-of-life care and antibiotic treatment is considered not appropriate
Patient <18 years of age and paediatric recruitment not approved at recruiting site
Patient has died since the collection of the index blood culture

To be included in any of the following DOMAINS the participant must met eligible for the PLATFORM (as listed above)

ADJUNCTIVE TREATMENT DOMAIN

Критерии включения

All participants that met the PLATFORM eligible are eligible to be included in this domain unless they meet any of the following exclusions listed.
Patients are eligible for this domain regardless of S. aureus susceptibility testing results to clindamycin.

Критерии исключения

1\. Previous type 1 hypersensitivity reaction to lincosamides 2. Currently receiving clindamycin (lincomycin) or linezolid which cannot be ceased or substituted 3. Necrotising fasciitis 4. Current C. difficile associated diarrhoea (any severity) 5. Current severe diarrhoea from any cause (defined as Grade 3 or higher) 5. Known CDAD (C.Difficile Associated Diarrhoea) in the past 3 months, or CDAD relapse in the past 12 months 6. At the time of domain eligibility assessment, more than 4 hours has elapsed since platform entry 7. Treating clinician deems enrolment in this domain is not in the best interest of the patient

PSSA, MSSA TREATMENT DOMAIN (backbone)

Критерии включения

For PSSA silo: Index blood culture isolate is penicillin-susceptible as per the Microbiology Appendix. In short, this will require phenotypic disc testing with EUCAST (a P1 disc diffusion with zone >=26mm OR a P1 disc diffusion with zone >=26mm and the zone edge is NOT sharp) OR CLSI (a P10 disc diffusion) defined criteria.
For MSSA silo: Index blood culture isolate is methicillin-susceptible as per the Microbiology Appendix.

Note that where trial sites are not testing for penicillin-susceptibility, patients with MSSA/PRSA can be included in the MSSA silo, but those with MSSA/PSSA (but not confirmed with a P-disc) will be excluded from the backbone domain. The rationale for this is that patients with MSSA but not tested with a P-disc may be truly PSSA (with no blaZ). If the cefazolin inoculum effect (CIE) is a clinically relevant entity, then including patients with an organism without blaZ (and hence cannot have a CIE phenotype), will bias towards non-inferiority of cefazolin compared to (flu)cloxacillin.

For PSSA, the requirement for laboratories to use an accredited phenotypic test for a penicillin-susceptible phenotype, is to ensure clinical safety according to internationally accepted guidelines. The automated antimicrobial susceptibility testing, and other phenotypic tests, have poor sensitivity for detection of blaZ compared to a gold standard of blaZ PCR. Therefore, patients could be placed at risk of treatment with benzylpenicillin when the infecting isolate is actually blaZ positive, unless these guidelines are followed.

Exclusion Criteria (PSSA \& MSSA):

>72 hours have elapsed since the collection of the index blood culture (i.e. the time of collection of the first positive blood culture from the patient during this episode)
History of type I hypersensitivity reaction (i.e. anaphylaxis or angioedema) to any penicillin or cephalosporin
History of severe delayed reaction (e.g. allergic interstitial nephritis, cutaneous vasculitis, Stevens-Johnson, DRESS, etc.) to any penicillin or cephalosporin
PSSA silo: Non-severe rash to any penicillin (unless patient has been subsequently de-labelled; this criteria does not include criteria 2 and 3 above), or MSSA silo: Non-severe rash to cefazolin or any penicillin (unless patient has been subsequently de-labelled); (Nausea, diarrhoea, headache, and other non-specific symptoms are NOT allergies, they are drug intolerance, and they are not exclusion criteria. Similarly, a vague history of an allergy of unclear nature, or a family history of allergy are not exclusions.)
Treating team deems enrolment in this domain is not in the best interest of the patient
Currently receiving maintenance dialysis (haemodialysis or peritoneal dialysis); (Acute renal replacement therapy (including CRRT, haemodialysis or peritoneal dialysis) are not exclusions. Such patients are eligible as long as appropriate vascular access is available or can be arranged.)
Polymicrobial bacteraemia (defined as more than one organism \[at species level\] in blood cultures, excluding those organisms judged to be contaminants by either the microbiology laboratory or treating clinician) reported between collection of the index blood culture and backbone domain eligibility assessment
Patient currently being treated with a systemic antibacterial agent that cannot be ceased or substituted for interventions allocated within the platform (unless antibiotic is listed in Table 1 of the DSA, which specifies allowed antibiotics with limited absorption from the gastrointestinal tract or negligible antimicrobial activity against S. aureus)

MRSA TREATMENT DOMAIN (backbone)

Критерии включения

1\. MRSA confirmed microbiologically

Критерии исключения

Time to allocation reveal is >72 hours from time of index blood culture collection
Severe allergy to any beta-lactam (including cefazolin) Immediate severe allergy: Anaphylaxis/angioedema Severe delayed allergy: Severe cutaneous adverse reaction (SCAR; including Steven Johnson Syndrome, Toxic Epidermal Necrolysis, Drug Rash with Eosinophilia and Systemic Symptoms (DRESS) and acute generalised exanthematous pustulosis (AGEP)), severe drug induced liver injury, proven allergic interstitial nephritis, immune-mediated haemolytic anaemia and other severe cytopenia.
Non-severe rash to cefazolin Nausea, diarrhoea, headache and other non-specific symptoms are NOT allergies, they are drug intolerance, and they are not exclusion criteria. Similarly, a vague history of an allergy of unclear nature, or a family history of allergy are not exclusions.)

3\. Severe allergy or non-severe rash to both vancomycin AND daptomycin Vancomycin infusion reaction (formerly known as "red man syndrome") is due to direct histamine release and is not generally an allergy, and therefore is not considered an exclusion.

5\. Treating team deems enrolment in the domain is not in the best interest of the patient 6. Polymicrobial bacteraemia (defined as more than one organism \[at species level\] in blood cultures, excluding those organisms judged to be contaminants by either the microbiology laboratory or treating clinician) reported between collection of the index blood culture and backbone domain eligibility assessment.

7\. Patient currently being treated with a systemic antibacterial agent that cannot be ceased or substituted for interventions allocated within the platform (unless antibiotic is listed in Table 1 of the DSA, which specifies allowed antibiotics with limited absorption from the gastrointestinal tract or negligible antimicrobial activity against S. aureus)

EARLY ORAL SWITCH DOMAIN

Критерии включения

Day 7 (+/- 2 days):

Clearance of SAB by platform Day 2: blood cultures negative for S. aureus from platform Day 2 onwards AND no known subsequent positive blood cultures
Afebrile (<37.8°C) for the past 72 hours (at time of judging eligibility)
Primary focus is either line related (either central or peripheral IV cannula) or skin and soft tissue, AND source control achieved (for 'line-related' this means line removed; for 'skin and soft tissue' means site PI considers source control to have been achieved and any abscess more than 2cm diameter has been drained)
No evidence of metastatic foci (on clinical or radiological examination, but radiological imaging is not required to exclude metastatic foci if not clinically indicated)

Day 14 (+/- 2 days):

Clearance of SAB by platform Day 5: blood cultures negative for S. aureus from platform Day 5 (+/-1 day) AND no known subsequent positive blood cultures. If the most recent blood culture from Day 2-4 is negative for S. aureus, blood cultures do not need to be repeated on Day 5 to fulfil eligibility criteria (Day 5 blood cultures will be assumed to be negative in this situation)
Afebrile (<37.8°C) for the past 72 hours (at time of judging eligibility)
Site Principal Investigator has determined that source control is adequate

Критерии исключения

When judging eligibility at platform Day 7 (+/- 2 days) and at Day 14 (+/- 2 days), exclusion criteria are:

Adherence to oral agents unlikely (as judged by site PI in consultation with the treating team)
Unreliable gastrointestinal absorption (e.g. vomiting, diarrhoea, nil by mouth, anatomical reasons)
There are no appropriate oral antibiotics due to contraindications, drug availability, or antibiotic resistance
Ongoing IV therapy unsuitable e.g. no IV access
Clinician deems not appropriate for early oral switch
Patient no longer willing to participate in domain In the lead-up to judging eligibility, it may be helpful to discuss with the patient the potential for continued IV treatment versus oral switch, to allow hospital discharge planning
Clinical team deems that sufficient duration of antibiotic therapy has already been provided

Exclusions when judging eligibility for early oral switch at trial Day 7 (+/- 2 days):

Presence of prosthetic cardiac valve, pacemaker or other intracardiac implant
Presence of intravascular clot, graft, or other intravascular prosthetic material Intravascular clot excludes superficial peripheral IV line-related thrombophlebitis. Intravascular prosthetic material excludes coronary artery stents)
Intravascular/intracardiac infections (e.g. endocarditis, mycotic aneurysm)
Presence of other intracardiac abnormalities felt to put patient at increased risk of endocarditis (e.g., bicuspid aortic valve)

PET/CT DOMAIN

Критерии включения

PET/CT participating site
Patient is accessible for PET/CT - a patient is considered accessible if the site team are able to access the participant medical records, arrange for a PET/CT scan for the patient, and discuss this domain with the patient and their treating healthcare providers.

Критерии исключения

Pregnant - patients of childbearing potential should be assessed for pregnancy status and a pregnancy test performed (if not performed within the past 10 days)
Currently breastfeeding
< 18 years of age
Patient has had PET/CT in the past 7 days
Patient needs PET/CT in the next 7 days (in the opinion of the clinical team, at the time of eligibility assessment)
Clinically unstable for PET/CT (as judged by the treating clinical team, taking into account need for organ support (including inotropes) and capacity to lie flat for the PET/CT)
Contraindication to PET/CT (e.g., claustrophobia, persistently elevated blood sugar levels \[>12.5mmol/L\] that cannot be corrected).
Patient no longer willing to participate in the domain - in the days leading up to judging eligibility, it may be helpful to discuss with the patient the potential for PET/CT vs no PET/CT to allow imaging planning
Clinician deems participation in this domain is not in the patient's best interests

Критерии приведены из реестра в оригинале (на английском). Окончательную оценку соответствия проводит исследовательский центр.

Здоровые добровольцы: Нет

Дизайн исследования

Распределение: Рандомизированное
Модель: Факторный дизайн
Маскирование: Открытое
Основная цель: Лечение

Центры проведения

Австралия · 51 центр

Canberra Hospital — Garran
Blacktown Hospital — Blacktown
Royal Prince Alfred Hospital — Camperdown
Concord Repatriation and General Hospital — Concord
St Vincent's Hospital Sydney — Darlinghurst
Nepean Hospital — Kingswood
St George Hospital — Kogarah
Liverpool Hospital — Liverpool
… и ещё 43 центра

Канада · 37 центров

Peter Lougheed Centre — Calgary
Foothills Medical Center — Calgary
Rockyview Hospital — Calgary
South Health Campus — Calgary
University of Alberta Hospital — Edmonton
Richmond Hospital — Richmond
Fraser Health Authority - Surrey Memorial Hospital — Surrey
Vancouver General Hospital — Vancouver
… и ещё 29 центров

Великобритания · 34 центра