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Posaconazole: when and how? The clinician's view
Aspasia Katragkou1, Fotini Tsikopoulou, Emmanuel Roilides
13rd Department of Pediatrics, Aristotle University Medical School, Hippokration Hospital, Thessaloniki, Greece.
Abstract:
Posaconazole is the newest triazole antifungal agent available as an oral suspension with an extended spectrum of activity against Candida species, Aspergillus species, Cryptococcus neoformans, Zygomycetes and endemic fungi. Among posaconazole advantages are the relatively low potential of cross-resistance with other azoles, few drug interactions compared with other azoles and its activity against Zygomycetes. Randomised, double-blind trials have shown that posaconazole is effective for prophylaxis against invasive fungal infections (IFI), especially aspergillosis, in high-risk patients. Results of Phase III clinical trials and case/series reports indicate that posaconazole is effective in treating oesophageal candidiasis, including azole-refractory disease, and other IFI refractory to standard antifungal therapies. To date, posaconazole has appeared to be well tolerated even in long-term courses; it has an excellent safety profile with gastrointestinal disturbances being the most common adverse events reported. The dose of posaconazole is 200 mg three times daily for prophylaxis, 800 mg daily in two or four divided doses for the treatment of IFI and 100 mg daily (200 mg loading dose) for the treatment of oropharyngeal candidiasis. On the basis of early clinical experience, it appears that posaconazole will be a valuable aid in the management of life-threatening fungal infections.
Insights
Posaconazole offers broad-spectrum antifungal activity, including against Zygomycetes, with fewer drug interactions. It is effective for prophylaxis and treatment of invasive fungal infections (IFI), showing a good safety profile.
Area of Science:
- Mycology
- Pharmacology
- Infectious Diseases
Background:
- Posaconazole is a novel triazole antifungal agent.
- It exhibits broad-spectrum activity against various fungi, including Candida, Aspergillus, Cryptococcus, Zygomycetes, and endemic fungi.
- Key advantages include low cross-resistance with other azoles and fewer drug interactions.
Purpose of the Study:
- To evaluate the efficacy and safety of posaconazole.
- To assess its role in prophylaxis and treatment of invasive fungal infections (IFI).
- To highlight its utility in azole-refractory and life-threatening fungal infections.
Main Methods:
- Randomized, double-blind trials for prophylaxis.
- Phase III clinical trials and case/series reports for treatment efficacy.
- Safety and tolerability assessments, including adverse event monitoring.
Main Results:
- Posaconazole demonstrated efficacy in prophylaxis against IFI, particularly aspergillosis, in high-risk patients.
- Effective treatment outcomes were observed for oesophageal candidiasis and other refractory IFI.
- The drug was well-tolerated, with gastrointestinal disturbances as the most common side effect.
Conclusions:
- Posaconazole is an effective antifungal agent for prophylaxis and treatment of IFI.
- Its favorable safety profile and activity against resistant fungi make it a valuable therapeutic option.
- Posaconazole is poised to be a significant aid in managing life-threatening fungal infections.
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