Staphylococcus Aureus Infection Clinical Trial
Official title:
Randomized Open-label Controlled Trial Evaluating a Single-dose Intravenous Dalbavancin Versus Standard Antibiotic Therapy During Catheter-related Bloodstream Infections Due to Staphylococcus Aureus
The primary objective of the study is to demonstrate, among patients with non-complicated CR-BSIs due to S. aureus, that a single-dose of intravenous (IV) dalbavancin 1500 mg is non-inferior to standard documented antibiotic therapy for 14 days according to national guidelines at DAY 30 (Long follow up visit). As the secondary objectives, the study aims to evaluate according to treatment group: 1. Cure rate at DAY 14 and DAY 90 (EOS); 2. Mortality rate within 90 days of follow-up; 3. Time to negativation of blood cultures; 4. Patient's quality of life; 5. Hospitalization length of stay; 6. Cost-utility analyses; 7. Occurrence of any adverse event (AE and SAE), until Day 90 (EOS).
Catheter-related bloodstream infections (CR-BSIs) are the most common nosocomial bloodstream infections, with an incidence as high as 8.5 to 19.8 infections per 1000 catheter-days. Staphylococcus aureus is involved in about 20% of CR-BSIs and associated with significant morbidity, mortality (9.3%), prolonged hospital stay (+ 9 days), and healthcare costs (35 000 € to 65 000 € per case). S. aureus CR-BSIs occurs mainly in frail patients with a port of catheter for chemotherapy or parenteral nutrition. According to international guidelines, management of CR-BSIs due to S. aureus includes the removal and replacement of the infected catheter and a 14-day intravenous (IV) antibiotic therapy. Therefore, the management of CR-BSIs due to S. aureus requires the insertion of a new intravenous catheter. In turn, the new catheter can also lead to new septic complications and limit the patients' autonomy. Non-adherence to these recommendations leads to over-mortality and costs. Following of the positive results of the SABATO trial in 2021 to determine whether early switch to oral antibiotic therapy is safe and effective in patients with uncomplicated BSA, oral switch during staphylococcal bacteremia, will likely become the standard of care. It is therefore justified to allow oral switch in the control arm. The usual practice in some centers is already to switch to oral antibiotics, after a minimum of 7 days of intravenous treatment. Dalbavancin is a new glycopeptide antibiotic, with an excellent bactericidal activity against Gram-positive bacteria, especially S. aureus, and a prolonged half-life of 14 to 15 days. As a comparison, half-life of antibiotics usually used for CR-BSIs due to S. aureus, i.e. penicillin or glycopeptide, as-per sensitivity to methicillin is much lower: 1.5 to 9 hours. Such prolonged half-life allows one IV injection to be sufficient and effective over 14 days of treatment. This remarkable characteristic should allow patients to be promptly discharged from hospital without monitoring. The hypothesis of the study is that in patients with CR-BSIs due to S. aureus, after catheter removal, dalbavancin could be administered intravenously in a single administration after catheter removal and be as effective as standard documented antibiotic therapy for 14 days according to national guidelines. ;
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