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Recruiting NCT01195558

NCT01195558 Patient Registry of Blind Subjects With Sleep-related Problems

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Clinical Trial Summary
NCT ID NCT01195558
Status Recruiting
Phase
Sponsor Vanda Pharmaceuticals
Condition Sleep-wake Disorder in Blind Individuals
Study Type OBSERVATIONAL
Enrollment 10,000 participants
Start Date 2010-04
Primary Completion 2030-04

Eligibility & Interventions

Sex All sexes
Min Age N/A
Max Age N/A
Study Type OBSERVATIONAL
Interventions
Data collection on blindness and sleep problems

Eligibility Fast-Check

Enter your details for a quick preliminary check. This does not replace medical advice.

What to Expect as a Participant

This is an observational study. You will not receive an experimental treatment; researchers will collect data based on your existing condition or standard treatment.

This trial targets 10,000 participants in total. It began in 2010-04 with a primary completion date of 2030-04.

⚠ This information is for research awareness only. Always consult your physician before joining any clinical trial. Participation is voluntary and you may withdraw at any time.

Brief Summary

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.

Eligibility Criteria

Inclusion Criteria: 1. Subjects or legal guardians must be at least 18 years of age to participate in the telephone survey. Parents or legal guardians may represent children from 0 through 17 years who meet the following criteria. 2. Subjects must be blind. 3. Subjects must have some self-described problem with sleep or daytime sleepiness.

Contact & Investigator

Central Contact

Vanda Pharmaceuticals

📞 (202) 734-3400

Frequently Asked Questions

Who can join the NCT01195558 clinical trial?

This trial is open to participants of all sexes, studying Sleep-wake Disorder in Blind Individuals. Full inclusion and exclusion criteria are listed in the Eligibility Criteria section. Always confirm your eligibility with the research team before applying.

Is NCT01195558 currently recruiting?

Yes, NCT01195558 is actively recruiting participants. Visit ClinicalTrials.gov or contact Vanda Pharmaceuticals to inquire about joining.

Where is the NCT01195558 trial being conducted?

This trial is being conducted at Washington D.C., United States.

Who is sponsoring the NCT01195558 clinical trial?

NCT01195558 is sponsored by Vanda Pharmaceuticals. The trial plans to enroll 10,000 participants.

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ClinicalMetric — Independent clinical trial intelligence platform. Not affiliated with NIH, ClinicalTrials.gov, the U.S. FDA, or any pharmaceutical company, hospital, or clinical research organization. Trial data is sourced from ClinicalTrials.gov for informational purposes only and does not constitute medical advice. Do not make any treatment, enrollment, or health decisions based solely on information found here — always consult a qualified healthcare professional. Full Disclaimer  ·  Last Reviewed: July 2026  ·  Data Methodology