Search / Trial NCT00000116

Randomized Trial of DHA for Retinitis Pigmentosa Patients Receiving Vitamin A

Launched by NATIONAL EYE INSTITUTE (NEI) · Sep 23, 1999

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Trial Information

Current as of June 14, 2024

Completed

Keywords

Description

Retinitis pigmentosa (RP) is a group of inherited retinal degenerations with a worldwide prevalence of approximately 1 in 4,000. Patients typically report night blindness and difficulty with midperipheral visual field in adolescence. As the condition progresses, they lose far peripheral visual field. Most patients have reductions in central vision by age 50 to 80 years. Based on electroretinograms (ERGs), the course of the disease can be slowed on average among adults on 15,000 IU/day of vitamin A palmitate. While conducting the trial on the effects of vitamin A on RP, it became apparent th...

Gender

All

Eligibility criteria

  • Inclusion Criteria:
  • Ocular Criteria:
  • Retinitis Pigmentosa, typical (non-syndromic) forms Best corrected visual acuity Greater than or equal to (GE )20/100 HFA 30-2 total point score GE 250 dB (decibels) 30 (Hertz) Hz ERG cone amplitude GE 0.68 microvolts
  • Dietary Criteria:
  • Dark fish intake Less than or equal to (LE) five servings per week Dietary omega-3 fatty acid intake LE 0.41 g/d Preformed Vitamin A intake in diet and supplements LE 10,000 IU/d Supplement intake LE 5000 IU/d of Vitamin A and LE 30 IU/d Vitamin E Consumption LE 3 alcoholic beverages per day
  • Medical and other criteria:
  • Body Mass Index Less than (LT )40 and weight GE 5th percentile for age, sex, and height Serum retinol level LE 100 mg/dl and serum retinyl ester levels LE 380 nm/L Serum cholesterol level LT 300 mg/dL and serum triglyceride levels LT 400 mg/dL Agree not to know study capsule content
  • Exclusion criteria:
  • Ocular criteria:
  • No confounding ocular disease
  • Dietary criteria:
  • No intake of cod liver oil or omega-3 capsules
  • Medical and other criteria:
  • Not pregnant or planning to become pregnant No clinically significant abnormal result on Complete Blood Count or serum liver function profile No other disease which might affect absorption or metabolism of DHA or Vitamin A

Attachments

readout_NCT00000116_2024-06-14.pdf

4.5 MB

NCT00000116_study_protocol.pdf

4.5 MB

About company

The National Institute of Allergy and Infectious Diseases (NIAID, /ˈnaɪ.æd/) is one of the 27 institutes and centers that make up the National Institutes of Health (NIH), an agency of the United States Department of Health and Human Services (HHS). NIAID's mission is to conduct basic and applied research to better understand, treat, and prevent infectious, immunologic, and allergic diseases.

Contacts

JC

Jennifer Cobb

Immunology at National Institute of Allergy and Infectious Diseases (NIAID)

Locations

Boston, Massachusetts, United States

People applied

Timeline

First submit

Trial launched

Trial updated

Estimated completion

Annual percent change per year at each of 4 years of followup

Reviews (48)

4.6

All reviews come from applied patients

5 stars
41
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6
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Leslie Alexander
20 September 2023

Duis aute irure dolor in reprehenderit in voluptate velit esse cillum dolore eu fugiat nulla pariatur. Excepteur sint occaecat cupidatat non proident, sunt in culpa qui officia deserunt mollit anim id est laborum?

Michael Foster
20 September 2023

Duis aute irure dolor in reprehenderit in voluptate velit esse cillum dolore eu fugiat nulla pariatur. Excepteur sint occaecat cupidatat non proident, sunt in culpa qui officia deserunt mollit anim id est laborum?

Dries Vincent
20 September 2023

Duis aute irure dolor in reprehenderit in voluptate velit esse cillum dolore eu fugiat nulla pariatur. Excepteur sint occaecat cupidatat non proident, sunt in culpa qui officia deserunt mollit anim id est laborum?

Leslie Alexander
20 September 2023

Duis aute irure dolor in reprehenderit in voluptate velit esse cillum dolore eu fugiat nulla pariatur. Excepteur sint occaecat cupidatat non proident, sunt in culpa qui officia deserunt mollit anim id est laborum?

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