10/13/2026
NPC is a rare genetic neurodegenerative disease that is estimated to affect only 1 in 150,000 people. NPC belongs to a larger group of more than 100 disorders known as lysosomal storage disorders. Patients with NPC disease are unable to make functional NPC protein, which is used by cells in the body to recycle cholesterol and lipids through the lysosome to other parts of the cell. The absence of functional NPC protein causes a toxic accumulation of cholesterol and other lipids in the lysosomes, while other parts of the cell are starved. This results in cell death and leads to irreversible organ damage.
Learn more about NPC: https://fireflyfund.org/about-npc1/