The FDA has approved arimoclomol (Miplyffa) for treating Niemann-Pick disease type C (NPC) in patients aged 2 years and older, in combination with miglustat. This approval is based on a phase 2/3 trial showing arimoclomol met its primary outcome measure of improving the NPC Clinical Severity Scale score. Arimoclomol, an orally delivered medication, increases the activation of transcription factors EB and E3, leading to upregulation of lysosomal genes. Zevra Therapeutics plans to launch the therapy in the U.S. within 8 to 12 weeks.