On the Treatment of Pneumocystis jirovecii Pneumonia: Current Practice Based on Outdated Evidence
Abstract Pneumocystis jirovecii pneumonia (PCP) is a common opportunistic infection causing more than 400,000 cases annually worldwide. While antiretroviral therapy has reduced the burden of PCP in persons living with HIV, an increasing proportion of cases occur in other immunocompromised populations. In this review we synthesize the available randomized controlled trial (RCT) evidence-base for PCP treatment. We identified 14 RCTs that were conducted 25-35 years ago, principally in 40-year-old men with HIV. Trimethoprim-sulfamethoxazole (TMP-SMX), at a dose of 15-20mg/kg/day, is the treatment of choice based on historical practice rather than on quality comparative dose finding studies. Treatment duration is similarly based on historical practice and is not evidence-based. Corticosteroids have a demonstrated role in hypoxemic patients with HIV but have yet to be studied in RCTs as an adjunctive therapy in non-HIV populations. The echinocandins are potential synergistic treatments in need of further investigation.