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"Echinocandin therapy can be safely delivered via OPAT with outcomes equivalent to bed-based care. The extended dosing interval of rezafungin will allow for a substantial reduction in the number of treatments required across the patient cohort" Clarke et al (2024).

Outpatient parenteral antimicrobial therapy treatment of Candida

Abstract:

Background: Outpatient parenteral antimicrobial therapy (OPAT) can deliver extended parenteral treatment of fungal infections in an ambulatory setting, whilst minimizing treatment burden and cost. The extended dosing interval of rezafungin may potentiate the benefits of OPAT.

Methods: This retrospective cohort study includes all adult patients who received echinocandin therapy in a large OPAT programme between 2012 and 2022. Patient characteristics, treatment and outcomes were studied. Data were analysed to determine the effects of replacing daily dosing with weekly dosing of echinocandin.

Results: Across the study period, 11% (44/386) of all patients in our Health Service treated with ≥7 days of echinocandin were managed via OPAT. All were Candida and related ‘yeast-like’ species infections. Nakaseomyces glabrata (20/41; 49%) was the most common pathogen, fungaemia the most common presentation (17/41; 41%) and azole resistance the most frequent indication for echinocandin use (21/41; 51%).In total, 633 days of echinocandin were administered as OPAT. Thirteen patients (13/41; 32%) received concurrent parenteral antibacterials. Treatment success was achieved in 30/41 (73%) patients. If daily echinocandin dosing was replaced with weekly dosing, a potential 52% (633 to 326) reduction in the total number of treatments (for any therapy) delivered by the OPAT team is possible. The ongoing need for daily antibacterial administration mitigated the benefit in some of this cohort.

Conclusions: Echinocandin therapy can be safely delivered via OPAT with outcomes equivalent to bed-based care. The extended dosing interval of rezafungin will allow for a substantial reduction in the number of treatments required across the patient cohort.


Reference:

Clarke F, Grenfell A, Chao S, Richards H, Korman T, Rogers B. Use of echinocandin outpatient parenteral antimicrobial therapy for the treatment of infection caused by Candida spp.: utilization, outcomes and impact of a change to weekly dosing. J Antimicrob Chemother. 2024 Sep 11:dkae302. doi: 10.1093/jac/dkae302. Epub ahead of print. PMID: 39259571.

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