What to Do When First-Line Treatment Fails in Solid Organ Transplant Recipients with Rhino-orbital-cerebral Mucormycosis
Clinical scenario
Adult solid organ transplant recipient with rhino-orbital-cerebral mucormycosis who has already received initial management but has not achieved complete radiological clearance of the infection.
Prior therapy and why this protocol applies
First-line management — early complete surgical debridement combined with systemic antifungal therapy with a lipid-based amphotericin B formulation — was pursued. However, response assessment (for example, weekly imaging) showed only stable disease or a partial response, rather than the required complete resolution of mucormycosis findings. This failure to achieve full radiological clearance is the criterion that triggers escalation to salvage treatment.
Salvage approach — partial overview
The salvage strategy centres on switching to a different antifungal class from the agent used in first-line therapy. Additional options exist for cases of progressive disease or extensive involvement. The specific agents, sequences, and individualized considerations are set out in the full protocol. The treatment goal is complete resolution of mucormycosis findings on imaging.
References
- In kidney transplant recipients, amphotericin B lipid complex 10 mg/kg per day has been given.
- Isavuconazole is strongly supported as salvage treatment.
- Posaconazole delayed release tablets or infusions are strongly supported for salvage treatment, and when available should be preferred over posaconazole oral suspension, which in turn is marginally supported for salvage treatment.
- In cases of primary treatment failure with isavuconazole or posaconazole, the guideline group supports recommendations for all three lipid-based amphotericin B formulations with strong to moderate strength.
- In case of extensive disease, rapid progression, or poor general condition, the addition of isavuconazole or posaconazole can be considered.
- Treatment should be continued until resolution of initially indicative findings on imaging and reconstitution of host immune system.
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