Study Description: This is a natural history study of Neuronal Ceroid Lipofuscinosis (NCL) disorders, including all known forms of NCL (e.g., CLN1 disease, CLN2 disease, etc.). The goals of the study are to learn more about the genetic changes that cause NCL disorders, the typical ages when symptoms start, how symptoms progress, and the ways that mobility (walking) is affected.

Eligibility & Criteria:

IRB#: IRB00393241

Individuals with an NCL condition who can walk with or without the use of assistive devices (e.g., cane) may join.