Patient Registry of Blind Subjects With Sleep-related Problems

Non-24-hour sleep-wake disorder (Non-24) is a condition experienced primarily by totally blind individuals that results in abnormal night sleep patterns and chronic daytime sleepiness. This is a research protocol to develop a patient registry of subjects who may suffer from Non-24 and who are blind. Subjects participate in the study through a phone survey. This registry will be used to better understand, sleep related problems in blind individuals, including the investigation of a potential treatment, recruitment for future clinical studies, and to provide a forum for raising awareness about Non-24. The survey consists of questions regarding the degree of vision impairment and sleep problems that the subjects may be experiencing.

NCT Number	NCT01195558
Lead Sponsor	Vanda Pharmaceuticals
Conditions	Sleep-wake Disorder in Blind Individuals
Enrollment	10,000 participants
Start Date	2010-04
Primary Completion	2030-04 (estimated)
Study Completion	2030-04 (estimated)
Updated on ClinicalTrials.gov	2020-06-24