Study Comparing the Safety and Efficacy of Tigecycline With Ampicillin-Sulbactam or Amoxicillin-Clavulanate to Treat Skin Infections

Investigator assigned clinical response of cure of the cSSSI defined as: resolution of all clinical signs and symptoms of infection (healing of chronic underlying skin ulcer not required) or improvement of signs or symptoms of the infection to such an extent that no further antibacterial therapy was necessary. CE population were those who completed TOC assessment of cure or failure (but not indeterminate) or, in case of premature discontinuation due to lack of efficacy, had completed end of treatment assessment such that assessment of clinical response could be made.

Time frame: up to 6 weeks

Population: Clinically Evaluable (CE): Patients with cSSSI, no Pseudomonas aeruginosa as sole baseline isolate, met major inclusion/exclusion criteria, ≤24 hrs antibiotics pre-baseline, had ≥4 days of study drug, compliant with therapy. Excludes indeterminates.

Healthcare resource utilization assessment included intensive care unit (ICU) and non-ICU inpatient hospitalization. TOC performed 8-50 days after last dose of study drug.

Time frame: up to 6 weeks

Population: All patients who received at least 1 dose of study article.

In vitro activity of the study drugs against a range of pathogenic bacteria that cause complicated skin and skin structure infection (cSSSI) were analyzed using MIC. MIC 50 and MIC 90 are the lowest concentrations of a drug that inhibit the growth of 50% and 90% of a microorganism, respectively. TOC performed 8-50 days after last dose of study drug.

Time frame: up to 6 weeks

Population: m-mITT: Patients with ≥1 dose of study drug, had cSSSI and baseline isolate from infection site / blood. MIC reported for isolates present in ≥10 m-mITT patients. In the categories below n is the actual number of isolates used to caluculate the MIC 50 and MIC 90.

Microbiological response assessed at patient level. Eradication=baseline isolate not present in repeat culture from the original infection site; Presumed Eradication=clinical response of cure precluded the availability of a specimen for culture; Persistence=baseline isolate present in repeat culture from the original infection site; Presumed Persistence=culture data not available for patients with a clinical response of failure; Superinfection=culture from the primary infection site had new pathogen not identified as a baseline isolate and clinical response was failure.

Time frame: up to 6 weeks

Population: Microbiologically Evaluable patients:CE patients who had baseline culture with ≥1 identified pathogen susceptible to both study drugs (ie, the pathogen is susceptible to tigecycline and comparator). TOC performed 8-50 days after last dose of study drug.

Investigator assigned clinical response of cure of the cSSSI defined as: resolution of all clinical signs and symptoms of infection (healing of chronic underlying skin ulcer not required) or improvement of signs or symptoms of the infection to such an extent that no further antibacterial therapy was necessary. ME population were subjects who were CE and had baseline culture with at least 1 identified isolate that was susceptible to study drug and comparator. TOC performed 8-50 days after last dose of study drug.

Time frame: up to 6 weeks

Population: Microbiologically Evaluable patients:Clinically Evaluable (CE) patients who had baseline culture with ≥1 identified pathogen susceptible to both study drugs (ie, the pathogen is susceptible to tigecycline and comparator). Excludes indeterminates.