BioMarin Pharmaceutical Inc. (BMRN) announced that the U.S. FDA has approved its supplemental Biologics License Application (sBLA) for PALYNZIQ. The approval expands the drug's indication to include pediatric patients aged 12 years and older suffering from Phenylketonuria (PKU). PALYNZIQ remains the only approved enzyme substitution therapy designed to manage this rare genetic disorder. The FDA's decision was supported by data from the Phase 3 PEGASUS study, which demonstrated a statistically significant reduction in blood phenylalanine levels compared to dietary management alone. This label expansion is expected to significantly increase the addressable market for BioMarin's specialized therapy by reaching a younger demographic. Market analysts view this development as a positive driver for the company's long-term revenue growth within the biotechnology sector.