Merck Sharp & Dohme LLC
This study aims to estimate the pharmacokinetics (PK) of posaconazole (POS, MK-5592) intravenous (IV) and powder for oral suspension (PFS) formulations in pediatric participants \<2 years of age with invasive fungal infection (IFI).
There are 2 panels in this study. In Panel A, POS IV will be evaluated in ≥8 participants. In Panel B, both POS IV and POS PFS will be evaluated in ≥14 participants, including ≥6 who are \<3 months of age and ≥5 who transition to the PFS formulation of POS.
Inclusion Criteria: * Panel A: is undergoing treatment for possible, probable, or proven IFI known or suspected to be cause by fungal pathogens against which POS has demonstrated activity (which can include candidiasis) * Panel B: has an investigator-assessed diagnosis of possible, probable, or proven IFI known or suspected to be cause by fungal pathogens against which POS has demonstrated activity (and cannot include candidiasis) * Has a central line (eg, central venous catheter, peripherally-inserted central catheter) in place or planned to be in place before beginning IV study intervention…
POS 6 mg/kg body weight by IV infusion
POS nominal 6 mg/kg body weight based on weight bands taken orally