Limited Access Protocol of Posaconazole in Invasive Fungal Infections Study PO2095

Therapeutic options for serious fungal infections are limited by intrinsic and acquired resistance to existing antifungal agents. For example, zygomycetes (such as Mucor spp.) are intrinsically resistant to voriconazole and caspofungin. Yet, the only available therapeutic option, amphotericin, is associated with significant renal toxicity, even in lipid formulations. Posaconazole is a new antifungal drug, not yet Food and Drug Administration (FDA) approved, but which has excellent in vitro activity against some intrinsically resistant fungi such as the zygomycetes. The intent of this trial is to provide access to posaconazole to patients with serious fungal infections which are refractory to standard antifungal therapies or invasive fungal infections for which there are currently no effective therapies. Secondly, the drug will also be made available to patients with invasive fungal infections who: * have experienced serious or severe toxicities while receiving standard antifungal therapies; * have pre-existing renal dysfunction which precludes use of standard antifungal therapies; or * are chronically immunosuppressed with a history of invasive fungal infections previously treated with posaconazole in other clinical trials, and who require oral antifungal suppressive therapy as maintenance treatment to prevent recurrence. This is a multicenter, open-label, non-comparative experimental treatment use protocol. The experimental treatment use protocol will provide the investigational medication posaconazole where no other drug is commercially available. Posaconazole is given as an orally or enterally administered suspension. The duration of therapy is at the discretion of the investigator. Safety assessments will include an electrocardiogram \[ECG\] (to ensure no QTc interval prolongation) performed at baseline and serum/urine pregnancy testing performed at baseline and every three months after initiation of therapy. Plasma concentrations will be obtained if there is