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Primary Tube Versus Trabeculectomy Study
NCT00666237 · View on ClinicalTrials.gov ↗
Study Summary
The purpose of the Primary Tube Versus Trabeculectomy (PTVT) Study is to compare the long-term safety and efficacy of nonvalved tube shunt surgery to trabeculectomy with mitomycin C in eyes that have not had previous ocular surgery.
Conditions Studied
Interventions
- DRUG Mitomycin C
- PROCEDURE Tube shunt surgery
- PROCEDURE Trabeculectomy
Study Locations (16)
Other
- University of Toronto — Toronto
- Moorfields Eye Hospital — London
- St. Thomas' Hospital — London
- Queen Mary's Sidcup Hospital — Sidcup
Florida
- University of Florida — Gainesville
- Bascom Palmer Eye Institute — Miami
Texas
- Glaucoma Associates of Texas — Dallas
- University of Texas, Houston — Houston
California
- University of California Davis Medical Center — Sacramento
Maryland
- Johns Hopkins — Baltimore
Missouri
- St. Louis University — St Louis
New York
- New York Eye and Ear Infirmary — New York
Ohio
- Cincinnati Eye Institute — Cincinnati
Trial Details
| Field | Value |
|---|---|
| Enrollment Target | 242 participants |
| Start Date | 2008-04-01 |
| Est. Completion | 2021-04-01 |
| Phase | Phase 4 |
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Full Details on ClinicalTrials.gov ↗What the Registry Record Tells You About NCT00666237
The ClinicalTrials.gov registry entry for NCT00666237 describes a study currently listed as completed. It is categorized as Phase 4, which is the standard way researchers label where a study sits along the investigational pathway from early safety work through later efficacy and post-marketing evaluation. The registered enrollment target is 242 participants, a figure that helps gauge the scale of data the investigators plan to collect. The listed sponsor is University of Miami, which has 667 total studies on file at ClinicalTrials.gov, and sponsors are the parties responsible for study design, oversight, and regulatory filings.
The record links to 1 condition, with Glaucoma appearing as the primary indexed condition, and to 3 interventions — of which Mitomycin C is the first listed. Interventions can include drugs, devices, procedures, behavioral programs, or observational arms, and each is tracked as a separate registry field so that downstream queries can filter accurately. When a trial lists multiple interventions, it usually reflects a multi-arm design or a comparison protocol rather than a single treatment being tested in isolation. The brief summary published in the registry is the clearest source of protocol intent and should be read before drawing conclusions from any sidebar tags.
Geographic footprint matters for practical reasons: NCT00666237 reports 16 study locations spanning 11 distinct geographic areas — top geographies include Other, Florida, Texas. A larger site network tends to correlate with broader recruitment capacity, but it does not imply anything about study quality, and site-level enrollment status can diverge from the overall registry status shown above. Every data point on this page comes from the public ClinicalTrials.gov dataset and is reproduced here for reference only; it is not a medical recommendation, an endorsement of the sponsor, or an invitation to enroll. Verify current status, eligibility criteria, and contact details directly at ClinicalTrials.gov, and discuss any participation decision with your own healthcare provider.
Frequently Asked Questions
What is clinical trial NCT00666237 about?
NCT00666237 is a clinical study titled "Primary Tube Versus Trabeculectomy Study". The purpose of the Primary Tube Versus Trabeculectomy (PTVT) Study is to compare the long-term safety and efficacy of nonvalved tube shunt surgery to trabeculectomy with mitomycin C in eyes that have not had previous ocular surgery.
What is the current status of trial NCT00666237?
This trial is currently completed. It is a Phase 4 study. The enrollment target is 242 participants. The study started on 2008-04-01. Estimated completion is 2021-04-01.
What conditions does trial NCT00666237 study?
This clinical trial studies the following conditions: Glaucoma. These conditions were identified from the trial registry and reflect the primary focus areas of the research.
What interventions are being tested in trial NCT00666237?
The interventions under investigation include: Mitomycin C (DRUG), Tube shunt surgery (PROCEDURE), Trabeculectomy (PROCEDURE). Each intervention is being evaluated for safety and efficacy as part of this clinical study.
Who is sponsoring clinical trial NCT00666237?
This trial is sponsored by University of Miami, which has 667 total clinical trials registered on ClinicalTrials.gov. The sponsor is responsible for the study's design, funding, and regulatory compliance.
Where is trial NCT00666237 being conducted?
This trial has 16 study locations across California, Florida, Maryland, Missouri, New York. Contact the study sites directly through ClinicalTrials.gov for enrollment availability.
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