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Low-dose trimethoprim-sulfamethoxazole treatment for Pneumocystis pneumonia: a systematic review and meta-analysis

Hui-Bin Huang, Yi-bing Zhu, Da-xing Yu

Frontiers in Pharmacology, 2024

3 citations

Abstract

Background The recommended standard treatment for Pneumocystis jirovecii pneumonia (PJP) is high-dose trimethoprim-sulfamethoxazole (TMP-SMX) (15–20 mg/kg/d TMP). However, the standard regimen may cause a high incidence of dose-related adverse events (AEs). Therefore, we aimed to conduct a systematic review and meta-analysis to evaluate the efficacy and safety of low-dose TMP-SMX regimens (<15 mg/kg/d of TMP) compared with the standard regimen in patients with PJP. Methods We searched PubMed, Embase, and the Cochrane database for relevant articles from inception to 10 March 2024. Studies were included if they focused on PJP patients receiving a low-dose TMP-SMX regimen compared with a standard regimen. The primary outcome was mortality. We assessed study quality and performed subgroup analysis and sensitivity analysis to explore potential heterogeneity among the included studies. Results Seven studies were included. Overall, the low-dose regimen significantly reduced the risk of mortality (odds ratio [OR] = 0.49; 95% CI, 0.30–0.80; I 2 = 16%; P = 004). This finding was confirmed in further sensitivity and subgroup analyses. The low-dose regimen also significantly reduced total AEs (OR = 0.43; 95% CI, 0.29–0.62; I 2 = 0%; P < 0.0001), and improved the incidence of most specific AEs (ORs ranged from 0.13 to 0.89). In addition, the low-dose regimen had significantly more patients completing the initial regimen (P = 0.002), fewer patients requiring dose reductions (P = 0.04),…

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