Efficacy and Safety Study of Antibiotic Treatment to Treat Hip Prosthetic Joint Infection

Study Overview
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Brief Summary
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The purpose of this study is to evaluate the efficacy of oral linezolid-rifampin combination therapy (over 4 or 6 weeks) versus the standard of care in the treatment of Gram-positive prosthetic hip joint infection with a one-stage surgical treatment.

Official Title
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Prospective,Randomized,Open Label,European Multicenter Study of the Efficacy of the Linezolid-rifampin Combination Versus Standard of Care in the Treatment of Gram-positive.

Conditions
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Hip Prosthetic Joint Infection

Intervention / Treatment
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* Drug: VANCOMYCIN
* Drug: CEFTRIAXONE
* Drug: CLINDAMYCIN
* Drug: SULFAMETHOXAZOLE AND TRIMETHOPRIM (CO-TRIMOXAZOLE)
* Drug: FLUOROQUINOLONE
* Drug: LINEZOLID
* Drug: RIFAMPIN


Participation Criteria
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Eligibility Criteria
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Inclusion Criteria: Men or women ≥ 18 to ≤ 80 years of age, weight ≥ 40 kg, BMI < 35, who have received a diagnosis of chronic PJI (lasting more than 4 weeks but less than 24 months) requiring a one-stage surgical procedure and presenting at least ONE of the following clinical signs and symptoms: Joint pain Effusion Erythema and sensation of heat at the implant site Limited range of motion in the affected joint Intraoperative microbiological specimens: during the surgical resection, 5 separate surgical specimens (at least 3) must be sent for culture and susceptibility testing. These specimens must be taken from different locations such as: Hip capsule, femoral membrane, acetabular membrane, synovium, and synovial fluid with separate instruments. A minimum of 2 surgical specimens must be positive. If a preoperative puncture revealed the presence of an acceptable (Gram+) pathogen, it is acceptable if only one pathogen similar to the previously revealed one is identified during the surgical procedure. Documented presence of Gram-positive bacteria as sole pathogen responsible for the infection. Note: This criterion must be verified after obtaining the results of the susceptibility test performed on the specimens taken during the surgical procedure. The verification will occur between Day 2 and Day 7 of the study. All patients must undergo 1-stage revision surgery. IRB or IEC approved informed consent form signed and dated. Informed consent will be obtained from each patient before participation in this research study. If any patient is unable to give consent, it may be obtained from the patient's next of kin or legal representative in accordance with current laws and regulations. Willing and able to comply with scheduled visits, up to 6 weeks of treatment with the study antibiotics, laboratory tests, and other study procedures. Patient entitled to Health System benefits or other such benefits Exclusion Criteria: Concerning women of childbearing age: intake of oral contraceptives (estroprogestins and progestins) unability to use adequate mechanical contraceptive precautions a positive pregnancy test result within 72 hours prior to randomization pregnant, or are currently breastfeeding and unwilling to discontinue breastfeeding during therapy Patients with a prosthetic joint infection caused by: Gram-negative, mixed Gram-negative and Gram-positive, fungal, or mycobacterial microorganisms. If a previous radiologically guided puncture has revealed the presence of a Gram-negative microorganism, the patient must not be enrolled in this study. Platelet count less than 100 ×103/mm3 at the time of the examination performed during the screening period. Hemoglobin < 9 g/dL at the time of the examination performed during the screening period. Infection affecting several joints. Rheumatological disease (e.g., rheumatoid arthritis, systemic lupus erythematosus, etc.) Previously diagnosed immune function disease(s) (e.g., AIDS), neutropenia (neutrophils < 1000/mm3). Alcoholism or substance abuse sufficient, in the investigator's judgment, to prevent treatment adherence to the study drug and/or follow-up. Patients currently in peritoneal dialysis or receiving another treatment for renal failure (e.g., hemofiltration, CVVH). Liver failure with alanine aminotransferase (ALT) and/or aspartate aminotransferase (AST) and/or total bilirubin levels upper or egal to 5 times the upper limit of normal. Patients with other concurrent serious infections such as: endocarditis, meningitis, or central nervous system (CNS) infections, decubitus and ischemic ulcers with underlying osteomyelitis, necrotizing fasciitis, gas gangrene. If suspected, these diagnoses must be ruled out prior to enrollment in the study. Previous randomization in this protocol. Not expected or not likely to survive for the entire duration of the treatment period and TOC (12 months after the end of treatment). Hypersensitivity to the study drugs or their excipients. Identification of a pathogen resistant to the investigational drugs. Patients treated with a protease inhibitor(e.g. indinavir, ritonavir), or with delavirdine, or with nevirapine. Patients treated or having been treated within two weeks prior surgery with an MAOI (A or B), an antiserotonergic drug, a tricyclic antidepressant, an agonist of 5HT1-receptor(triptan), a direct or indirect sympathomimetic drug (including adrenergic bronchodilator, pseudoephedrin, phenylpropanolamin), a vasopressor (adrenalin, noradrenalin), dopaminergic drug, pethidin or buspirone, Patients with a degenerative neurological disease (Parkinson's disease, multiple sclerosis, Alzheimer's disease, etc.). Patient presenting an uncontrolled hypertension, a pheochromocytoma, a carcinoid syndrome, a hyperthyroidism, a bipolar depression, a dysthymic schizophrenia, an acute confusional state, pophyria or a history of retrobulbar optic neuritis. Patient who is participating or has participated in a clinical trial in the month prior to the study screening visit.

Ages Eligible for Study
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Minimum Age: 18 Years
Maximum Age: 80 Years

Sexes Eligible for Study
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All

Accepts Healthy Volunteers
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Accepts Healthy Volunteers

Study Plan
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How is the study designed?
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Design Details

Primary Purpose: Treatment
Allocation: Randomized
Intervention Model: Parallel Assignment
Masking: None (Open Label)


Arms and Interventions

| Participant Group/Arm | Intervention/Treatment |
| --- | --- |
| Active Comparator: Treatment A<br>IV vancomycin (15mg/kg every 12 hours or in a continuous infusion) and IV ceftriaxone (2g daily) until Day 2 to 7 (until the susceptibility test results are obtained). Patients with only a confirmed Gram-positive infection will continue the study and will receive standard of care antibiotic therapy including oral rifampin (10-15mg/kg every 12 hours) combined with either oral clindamycin (600 mg every 8 hours) or oral sulfamethoxazole and trimethoprim (800/160 mg every 8 hours) or oral fluoroquinolone (Ofloxacin 200 mg every 12 hours). The total duration of antibiotic therapy from the day of the surgical procedure until the end of treatment (EOT) will be 6 weeks. | Drug: VANCOMYCIN<br> <br> * Other names: VANCOCIN;Drug: CEFTRIAXONE<br> <br> * Other names: ROCEPHIN;Drug: CLINDAMYCIN<br> <br> * Other names: DALACIN;Drug: SULFAMETHOXAZOLE AND TRIMETHOPRIM (CO-TRIMOXAZOLE)<br> <br> * Other names: BACTRIM;Drug: FLUOROQUINOLONE<br> <br> * Other names: OFLOCIN;Drug: RIFAMPIN<br> <br> * Other names: RIFADIN;|
| Experimental: Treatment B<br>IV vancomycin (15mg/kg every 12 hours or in a continuous infusion) and IV ceftriaxone (2g daily) until Day 2 to 7 (until the susceptibility test results are obtained). Patients with only a confirmed Gram-positive infection will continue the study and will receive oral linezolid (600mg every 12 hours) combined with oral rifampin (10-15mg/kg every 12 hours). The total duration of antibiotic therapy from the day of the surgical procedure until the end of treatment (EOT) will be 6 weeks. | Drug: VANCOMYCIN<br> <br> * Other names: VANCOCIN;Drug: CEFTRIAXONE<br> <br> * Other names: ROCEPHIN;Drug: LINEZOLID<br> <br> * Other names: ZYVOXID;Drug: RIFAMPIN<br> <br> * Other names: RIFADIN;|
| Experimental: Treatment C<br>IV linezolid (600 mg every 12 hours)and IV ceftriaxone (2g daily) until Day 2. Oral or IV rifampin (10-15 mg/kg every 12 hours) will be added 48 hours after initiating the study treatment. Treatment with the study drug will continue until Day 2 to 7 (until the susceptibility test results are obtained). Patients with only a confirmed Gram-positive infection will continue the study. Treatment with ceftriaxone will be discontinued and the patient will switch to oral linezolid and oral rifampin. The total duration of antibiotic therapy from the day of the surgical procedure until the end of treatment (EOT) will be 4 weeks. | Drug: VANCOMYCIN<br> <br> * Other names: VANCOCIN;Drug: CEFTRIAXONE<br> <br> * Other names: ROCEPHIN;Drug: LINEZOLID<br> <br> * Other names: ZYVOXID;Drug: RIFAMPIN<br> <br> * Other names: RIFADIN;|

What is the study measuring?
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Primary Outcome Measures

| Outcome Measure | Measure Description | Time Frame |
| --- | --- | --- |
| Clinical cure rate | Clinical cure rate in the modified intent-to-treat (mITT)population during the hospital visit. Patients will be declared cured if clinical signs of infection are normalized. | 12 months after the end of treatment | 

Secondary Outcome Measures

| Outcome Measure | Measure Description | Time Frame |
| --- | --- | --- |
| Cure rate | Cure rate ine the modified intent-to-treat population during the hospital visit. Patients will be cdeclared cured if radiological and laboratory signs of infection are normalized. | 12 months after the end of treatment | 
| Cure rate | Patients will be declared cured if clinical, radiological, and laboratory signs of infection normalized. | 6 and 24 months after the end of treatment for the modified intent-to-treat population and at 12 months for the per protocol population. | 

 Terms related to the study
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Keywords Provided by Centre Hospitalier Valida
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Antibiotic, linezolid, linezolid/rifampin