AniridiaNCT00001161
Abnormalities of the Eye's Anterior Chamber, Iris, Cornea and Lens
An observational study of Aniridia and Eye Abnormality, run by National Eye Institute (NEI) at 1 site in United States.
Trial summary
This study will investigate congenital or developmental eye abnormalities that affect the iris, cornea and lens, and are usually accompanied by elevated pressure within the eye. These disorders can cause vision loss, and the increased eye pressure can lead to glaucoma, a condition that may also cause loss of eyesight. Read more about this study
- Who is it for?
- Any age
- Conditions the study is for
- Aniridia, Eye Abnormality, Ocular Hypertension
- How many people
- 100 participants
- Where
- 1 siteUnited States
- Study dates
- Jul 1977to Aug 2002
- Phase
- Observational
- Are there results?
- None posted in the registry
Key requirements
Who can take part, as listed by the sponsor. Only the study team can confirm whether you are eligible, so take this list to your doctor.
- Ages Any age
- All sexes
- No healthy volunteers
- Child, Adult, Older adult
The eye conditions to be studied include Axenfeld's syndrome, Rieger's anomaly, Peter's anomaly, (all with or without glaucoma), Iridocorneal Endothelial syndrome, Aniridia, Pigment Dispersion syndrome, Megalocornea and other conditions with clinical abnormalities of the anterior chamber.
Patients will not be included in the study if they do not fit the morphologic characteristics of the disease in question or if the patient's general medical condition or other related factors make it impossible for him or her to continue participation in the study.
Trial locations and contacts
1 site in 1 country.
United States1 site
National Eye Institute (NEI)
Bethesda, Maryland, 20892
About this study
Official title: Anomalies of the Anterior Chamber, Angle, Iris, Cornea and Lens With or Without Glaucoma or Ocular Hypertension
This study will investigate congenital or developmental eye abnormalities that affect the iris, cornea and lens, and are usually accompanied by elevated pressure within the eye. These disorders can cause vision loss, and the increased eye pressure can lead to glaucoma, a condition that may also cause loss of eyesight.
Patients with eye anterior chamber eye disease, such as Axenfeld's syndrome, Rieger's anomaly, Peter's anomaly, iridocorneal endothelial syndrome, megalocornea, ocular hypertension, and others, are eligible for this study. Participants will have a medical examination, family history, and comprehensive eye examination. Tests and procedures may include photographs of the cornea, iris, and the structure through which fluid that normally circulates behind the cornea drains out of the eye. Some patients may undergo indentation tonography to measure how easily this fluid drains. In this procedure, the patient lies on an examination table and both eyes are numbed with eye drops. A small instrument (tonometer) is placed on the surface of one eye, and with the other eye, the patient looks at an overhead light. Other tests may include photographs of the back of the eye and ultrasound imaging of the structures of the eye. A blood sample may be drawn to study the genetic disorder responsible for the disease. Patients will have follow-up examinations every 6 months for the duration of the study.
Medical or surgical therapy will be recommended, as appropriate, for patients who develop elevated eye pressure or vision loss.
Read the detailed description
This study will concentrate on abnormalities of the anterior chamber with or without elevated intraocular pressure. The purpose of the study will be to determine if there is a common pathogenesis shared by these conditions. A natural history study of 40 individuals with these diseases will utilize clinical measurements and photographs for documentation of this hypothesis. In addition, surgical specimens, when available, will be studied.
- Conditions
- Aniridia, Eye Abnormality, Ocular Hypertension, Open Angle Glaucoma
- Keywords
- Irido Corneal Angle, Mesothelium, Congenital Anomalies, Neural Crest, Increased Intraocular Pressure, Glaucoma, Axenfeld's Syndrome, Rieger's Anomaly, Peter's Anomaly, Iridocorneal Endothelial Syndrome, Aniridia, Pigment Dispersion Syndrome, Megalocornea
- Medical subject headings
- Aniridia, Eye Abnormalities, Ocular Hypertension, Glaucoma, Open-Angle, Congenital Abnormalities, Glaucoma, Axenfeld-Rieger syndrome, Peters anomaly
Timeline
From the start of the study to its completion; the mark is today. Estimated dates are the sponsor’s plan.
- First posted4 Nov 1999 (estimated)
- Study startJul 1977
- Study completionAug 2002
Resources
- Official record on ClinicalTrials.govThe registry entry this page is built from, with its full change history.
- Publications (3)Papers the sponsor has linked to this study.
- Other trials for AniridiaStudies of the same condition, open and under way.
- What the trial phases meanHow a treatment moves from first tests in people to approval.
More details
For doctors and researchers: how the study is designed, who runs it, and its registry IDs.
Study design
- Study type
- Observational
- Enrolment
- 100 participants
Sponsor and investigators
- Lead sponsor
- National Eye Institute (NEI)
- Sponsor type
- US National Institutes of Health
IDs, dates and publications
- ClinicalTrials.gov ID
- NCT00001161
- Sponsor's protocol ID
- 770119
- Other IDs
- 77-EI-0119
- Status last verified
- Aug 2002
- First submitted
- 3 Nov 1999
- Last updated
- 4 Mar 2008
- Results posted
- No
Publications
Datson NA, Semina E, van Staalduinen AA, Dauwerse HG, Meershoek EJ, Heus JJ, Frants RR, den Dunnen JT, Murray JC, van Ommen GJ. Closing in on the Rieger syndrome gene on 4q25: mapping translocation breakpoints within a 50-kb region. Am J Hum Genet. 1996 Dec;59(6):1297-305.
PubMed 8940275Semina EV, Datson NA, Leysens NJ, Zabel BU, Carey JC, Bell GI, Bitoun P, Lindgren C, Stevenson T, Frants RR, van Ommen G, Murray JC. Exclusion of epidermal growth factor and high-resolution physical mapping across the Rieger syndrome locus. Am J Hum Genet. 1996 Dec;59(6):1288-96.
PubMed 8940274Semina EV, Reiter R, Leysens NJ, Alward WL, Small KW, Datson NA, Siegel-Bartelt J, Bierke-Nelson D, Bitoun P, Zabel BU, Carey JC, Murray JC. Cloning and characterization of a novel bicoid-related homeobox transcription factor gene, RIEG, involved in Rieger syndrome. Nat Genet. 1996 Dec;14(4):392-9. doi: 10.1038/ng1296-392.
PubMed 8944018
Study at a glance
From the registry record, last updated by the sponsor on 4 Mar 2008. Recruitment status is as the sponsor reported it: confirm with the study team.
- Official title
- Anomalies of the Anterior Chamber, Angle, Iris, Cornea and Lens With or Without Glaucoma or Ocular Hypertension
- ClinicalTrials.gov ID
- NCT00001161
- Acronym / sponsor ID
- 770119
- Conditions
- Aniridia, Eye Abnormality, Ocular Hypertension, Open Angle Glaucoma
- Keywords
- Irido Corneal Angle, Mesothelium, Congenital Anomalies, Neural Crest, Increased Intraocular Pressure, Glaucoma, Axenfeld's Syndrome, Rieger's Anomaly
- Study type
- Observational
- Recruitment status
- Completed
- Enrolment
- 100 participants
- Lead sponsor
- National Eye Institute (NEI)US National Institutes of Health
- Study start
- Jul 1977
- Study completion
- Aug 2002
- First posted
- 4 Nov 1999 (estimated)
- Results
- Not posted in the source record
Clinical summary
The research question as the sponsor registered it. This describes what the study plans to test, not what it found.
This study will investigate congenital or developmental eye abnormalities that affect the iris, cornea and lens, and are usually accompanied by elevated pressure within the eye. These disorders can cause vision loss, and the increased eye pressure can lead to glaucoma, a condition that may also cause loss of eyesight.
Patients with eye anterior chamber eye disease, such as Axenfeld's syndrome, Rieger's anomaly, Peter's anomaly, iridocorneal endothelial syndrome, megalocornea, ocular hypertension, and others, are eligible for this study. Participants will have a medical examination, family history, and comprehensive eye examination. Tests and procedures may include photographs of the cornea, iris, and the structure through which fluid that normally circulates behind the cornea drains out of the eye. Some patients may undergo indentation tonography to measure how easily this fluid drains. In this procedure, the patient lies on an examination table and both eyes are numbed with eye drops. A small instrument (tonometer) is placed on the surface of one eye, and with the other eye, the patient looks at an overhead light. Other tests may include photographs of the back of the eye and ultrasound imaging of the structures of the eye. A blood sample may be drawn to study the genetic disorder responsible for the disease. Patients will have follow-up examinations every 6 months for the duration of the study.
Medical or surgical therapy will be recommended, as appropriate, for patients who develop elevated eye pressure or vision loss.
Detailed description
This study will concentrate on abnormalities of the anterior chamber with or without elevated intraocular pressure. The purpose of the study will be to determine if there is a common pathogenesis shared by these conditions. A natural history study of 40 individuals with these diseases will utilize clinical measurements and photographs for documentation of this hypothesis. In addition, surgical specimens, when available, will be studied.
Study design
Who may qualify
- Sex
- All
- Healthy volunteers
- Not accepted
- Age groups
- Child, Adult, Older adult
Eligibility is decided by the study team after screening; this overview does not establish that a patient qualifies. Full inclusion and exclusion criteria.
Primary outcome
Not reported in the source record.
Results and safety
The study is completed, but results are not available in the source record. That does not mean the treatment did or did not work.
Research links
- Official record on ClinicalTrials.govLast updated by the sponsor 4 Mar 2008.
- Background: PubMed 8940275Datson NA, Semina E, van Staalduinen AA, Dauwerse HG, Meershoek EJ, Heus JJ, Frants RR, den Dunnen JT, Murray JC, van Ommen GJ. Closing in on the Rieger syndrome gene on 4q25: mapping translocation breakpoints within a 50-kb region. Am J Hum Genet. 1996 Dec;59(6):1297-305.
- Background: PubMed 8940274Semina EV, Datson NA, Leysens NJ, Zabel BU, Carey JC, Bell GI, Bitoun P, Lindgren C, Stevenson T, Frants RR, van Ommen G, Murray JC. Exclusion of epidermal growth factor and high-resolution physical mapping across the Rieger syndrome locus. Am J Hum Genet. 1996 Dec;59(6):1288-96.
- Background: PubMed 8944018Semina EV, Reiter R, Leysens NJ, Alward WL, Small KW, Datson NA, Siegel-Bartelt J, Bierke-Nelson D, Bitoun P, Zabel BU, Carey JC, Murray JC. Cloning and characterization of a novel bicoid-related homeobox transcription factor gene, RIEG, involved in Rieger syndrome. Nat Genet. 1996 Dec;14(4):392-9. doi: 10.1038/ng1296-392.
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Referral and contact
AzTrials does not enrol participants or take referrals. Contact the study team or a site listed below; they decide who can take part. This study is not recruiting at the moment.
The record lists no contact. Use the official record to reach the sponsor.
1 site in 1 country: see every site and its status.
Questions about this trial
What is this clinical trial studying?
An observational study of Aniridia and Eye Abnormality, run by National Eye Institute (NEI) at 1 site in United States.
The full registered description is in the About this study section and the official record.
Is this clinical trial currently recruiting?
The record says: finished, as of the sponsor's last update on 4 Mar 2008. Status can change between updates, so confirm with the study contact before making plans.
Where is the study taking place?
The record lists 1 site in United States. Whether a site is taking part right now should be confirmed with that site. See every site.
What are the possible benefits and risks?
They depend on the study and the treatment, and no study can promise a benefit. The study team explains the known risks during informed consent, before anyone joins; the record itself does not list them.
Are results available for this study?
The study is completed, but results are not available in the source record. That does not mean the treatment did or did not work.
How can a doctor refer a patient or contact the research team?
The record lists no contact. The official record names the sponsor, who can be asked directly. AzTrials does not enrol participants or take referrals.
Where can I read the original study information?
On the ClinicalTrials.gov record for NCT00001161, which also lists 3 linked publications.
Does a listing mean the treatment is approved or proven to work?
No. A listing means the study is registered. It does not show that the treatment is safe, works, or is approved by a regulator.
How often is this information updated?
AzTrials copies changed records from ClinicalTrials.gov every night and reloads the whole registry every week. The sponsor last updated this record on 4 Mar 2008; AzTrials last refreshed its copy on 8 Nov 2026.