Telavancin for the treatment of hospital-acquired pneumonia: findings from the ATTAIN studies.
Treatment options for hospital-acquired pneumonia caused by Gram-positive organisms are far from ideal. The increase in vancomycin MICs among methicillin-resistant Staphylococcus aureus (MRSA) isolates, and the slow bactericidal action and poor lung penetration of vancomycin have driven the search for an alternative agent. Telavancin, a once-daily lipoglycopeptide, displays strong bactericidal activity against S. aureus. Two large Phase III randomized trials have recently compared intravenous telavancin (10 mg/kg every 24 h) with vancomycin (1 g intravenously every 12 h) for 7-21 days for the treatment of hospital-acquired pneumonia caused by Gram positives. No significant differences were observed in the cure rates in the all-treated (n = 1503), the clinically evaluable (n = 654) and the microbiologically evaluable (n =480) populations. Telavancin performed better than vancomycin in patients with monomicrobial S. aureus pneumonia (84.2 vs 74.3%; 95% CI: 0.7-19.1), with MRSA (81.8 vs 74.1%; 95% CI: -3.5 to 19.3), and with strains having vancomycin MICs ≥1 µg/ml (87.1 vs 74.3; 95% CI: 0.5-23). The rate of adverse events, including serious adverse events, was similar in both groups, with a slightly higher rate of serum creatinine increase in the telavancin-treated group. Based on these results, telavancin (already approved for this indication by the EMA) could certainly be added to the current treatment options, particularly in patients with MRSA pneumonia.
Nannini, EC; Corey, GR; Stryjewski, ME
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