Durham, NC, April 5, 2023 Parion Sciences (Parion) today announced receipt of a positive opinion from the Paediatric Committee (PDCO) of the European Medicines Agency (EMA) for the Paediatric Investigation Plan (PIP) for Idrevloride Inhalation Solution, an epithelial sodium channel (ENaC) inhibitor, currently in development for the treatment of primary ciliary dyskinesia (PCD).