- ICH GCP
- US Clinical Trials Registry
- Clinical Trial NCT04967989
Clarifying the Optimal Application of SLT Therapy Trial (COAST)
Study Overview
Status
Conditions
Intervention / Treatment
Study Type
Enrollment (Estimated)
Phase
- Phase 3
Contacts and Locations
Study Contact
- Name: Tony Realini, MD, MPH
- Phone Number: 3045986926
- Email: hypotonywvu@gmail.com
Study Locations
-
-
Ontario
-
Kitchener, Ontario, Canada, N2A0K5
- Recruiting
- Ocular Health Centre
-
Contact:
- Nirmit Shah
- Phone Number: 519-496-7537
- Email: nirmits378@gmail.com
-
Principal Investigator:
- Toby Chan, MD
-
-
-
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London, United Kingdom
- Not yet recruiting
- Moorfields Eye Hospital
-
Contact:
- Hayley Boston
- Phone Number: 020-7566-2117
- Email: h.boston@nhs.net
-
Principal Investigator:
- Gus Gazzard, MD
-
-
-
-
California
-
Laguna Hills, California, United States, 92653
- Recruiting
- Harvard Eye Associates
-
Principal Investigator:
- Ye Elaine Wang, MD
-
Contact:
- Jasmin Kaur
- Phone Number: 949-951-2020
- Email: jkaur@harvardeye.com
-
Pasadena, California, United States, 91105
- Recruiting
- Doheny Eye Center UCLA
-
Contact:
- Janett Mendez
- Phone Number: 626-817-4747
- Email: JanettMendez@mednet.ucla.edu
-
Principal Investigator:
- Judy L Chen, MD
-
Sacramento, California, United States, 95817
- Recruiting
- University of California, Davis
-
Contact:
- Susan Garcia
- Phone Number: 916-734-4546
- Email: smgarcia@ucdavis.edu
-
Principal Investigator:
- James Brandt, MD
-
San Francisco, California, United States, 94158
- Recruiting
- University of California, San Francisco
-
Principal Investigator:
- Ying Han, MD
-
Contact:
- Ashika Kuchhangi
- Phone Number: 510-298-8394
- Email: ashika.kuchhangi@ucsf.edu
-
-
Colorado
-
Sheridan, Colorado, United States, 80110
- Recruiting
- Mile High Eye Institute
-
Contact:
- Alicia Ortiz
- Phone Number: 106 303-482-1300
- Email: research@mhei.com
-
Principal Investigator:
- Zachary Vest, MD
-
-
Florida
-
Lake Worth, Florida, United States, 33467
- Recruiting
- Clear Vue Laser Eye Center
-
Contact:
- Michelle Hill
- Phone Number: 561-432-4141
- Email: michelle@clearvuenow.com
-
Principal Investigator:
- Monique Barbour, MD
-
-
Illinois
-
Chicago, Illinois, United States, 60615
- Recruiting
- Northwestern Medical Group
-
Principal Investigator:
- Angelo Tanna, MD
-
Contact:
- Ethan Miller
- Phone Number: 312-695-0252
- Email: ethan.miller@northwestern.edu
-
Orland Park, Illinois, United States, 60467
- Recruiting
- Arbors Centers for Eye Care
-
Contact:
- Lorene Rafol
- Phone Number: 708-249-1026
- Email: lorenerafol@arboreyecare.com
-
Principal Investigator:
- Richard Quinones, MD
-
Peoria, Illinois, United States, 61615
- Recruiting
- Illinois Eye Center
-
Contact:
- Lori Hendershott
- Phone Number: 309-213-0664
- Email: lhendershott@illinoiseyecenter.com
-
Principal Investigator:
- Sachin Kalarn, MD
-
-
Maryland
-
Baltimore, Maryland, United States, 21287
- Recruiting
- Wilmer Eye Institute Johns Hopkins
-
Contact:
- Ala Lutsenko
- Phone Number: 818-744-8788
-
Principal Investigator:
- Pradeep Ramulu, MD
-
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Massachusetts
-
Boston, Massachusetts, United States, 02114
- Recruiting
- Massachusetts Eye and Ear
-
Principal Investigator:
- Michael Lin, MD
-
Contact:
- Tony Succar
- Email: Tony_Succar@MEEI.HARVARD.EDU
-
Boston, Massachusetts, United States, 02451
- Recruiting
- Ophthalmic Consultants of Boston
-
Contact:
- Jason Lu
- Phone Number: 617-314-2687
- Email: jlu@eyeboston.com
-
Principal Investigator:
- Theodor Sauer, MD
-
Reading, Massachusetts, United States, 01867
- Recruiting
- Mark Latina, LLC
-
Contact:
- Ann Gardikas
- Phone Number: 781-942-9876
- Email: anngardikas76@gmail.com
-
Principal Investigator:
- Mark Latina, MD
-
-
Michigan
-
Ann Arbor, Michigan, United States, 48105
- Recruiting
- University of Michigan Kellogg Eye Center
-
Contact:
- Lindsay Rudberg
- Phone Number: 734-647-9196
- Email: rulindsa@med.umich.edu
-
Principal Investigator:
- Amanda Bicket, MD
-
Detroit, Michigan, United States, 48201
- Recruiting
- Kresge Eye Institute Wayne State University
-
Contact:
- Bayan El-Haik
- Phone Number: 313-515-5487
- Email: bayan.el-haik@wayne.edu
-
Principal Investigator:
- Bret Hughes, MD
-
-
New York
-
Bronx, New York, United States, 10469
- Recruiting
- New York Eye Surgery Associates
-
Contact:
- Krystina Tavarez-Feliciano
- Phone Number: 347-860-4474
- Email: kfeliciano@nyeye.com
-
Principal Investigator:
- Nathan Radcliffe, MD
-
-
Ohio
-
Cleveland, Ohio, United States, 44195
- Recruiting
- Cleveland Clinic Cole Eye Institute
-
Principal Investigator:
- Ang Li, MD
-
Contact:
- Duscia Vasic
- Phone Number: 216-445-3840
- Email: vasicd@ccf.org
-
Cleveland, Ohio, United States, 44106
- Recruiting
- University Hospitals Eye Institute
-
Principal Investigator:
- Douglas Rhee, MD
-
Contact:
- Rashad Spruill
- Phone Number: 216-844-7934
- Email: rashad.spruill@uhhospitals.org
-
-
Oregon
-
Portland, Oregon, United States, 97210
- Recruiting
- Devers Eye Institute
-
Contact:
- Jack Rees
- Phone Number: 503-413-8495
- Email: jrees@deverseye.org
-
Principal Investigator:
- Robert Kinast, MD
-
-
Pennsylvania
-
Kingston, Pennsylvania, United States, 18704
- Recruiting
- Eye Care Specialists
-
Contact:
- Patty Yuhas
- Phone Number: 570-714-5901
- Email: patty.yuhas@vipeyes.com
-
Principal Investigator:
- Daniel Lutz, MD
-
Philadelphia, Pennsylvania, United States, 19107
- Recruiting
- Wills Eye Hospital
-
Contact:
- Maskerem Divers
- Phone Number: 215-825-4712
- Email: MDivers@willseye.org
-
Principal Investigator:
- Lauren Hock, MD
-
Philadelphia, Pennsylvania, United States, 19104
- Recruiting
- Scheie Eye Institute
-
Contact:
- Criston Young
- Phone Number: 856-519-8295
- Email: Criston.Young@pennmedicine.upenn.edu
-
Principal Investigator:
- Ahmara Ross, MD
-
Pittsburgh, Pennsylvania, United States, 15213
- Recruiting
- UPMC Eye Center
-
Contact:
- Rhonda Dahlstrom
- Phone Number: 412-647-3434
- Email: dahlstromrj@upmc.edu
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Principal Investigator:
- Ian Conner, MD
-
-
Tennessee
-
Nashville, Tennessee, United States, 37232
- Recruiting
- Vanderbilt Eye Institute
-
Contact:
- Marybeth Carter
- Phone Number: 616-936-1639
- Email: marybeth.l.carter@vumc.org
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Principal Investigator:
- Rachel Kuchtey, MD
-
-
Texas
-
Fort Worth, Texas, United States, 76102
- Recruiting
- Ophthalmology Associates
-
Principal Investigator:
- Brian Flowers, MD
-
Contact:
- Jose Rosado
- Phone Number: 1780 817-332-2020
- Email: jrosado@oafw2020.com
-
-
Washington
-
Spokane, Washington, United States, 99204
- Recruiting
- Spokane Eye Clinical Research
-
Contact:
- Dylan Waidelich
- Phone Number: 509-623-9768
- Email: dwaidelich@spokaneeye.com
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Principal Investigator:
- Rory Allar, MD
-
-
West Virginia
-
Morgantown, West Virginia, United States, 26505
- Recruiting
- West Virginia University
-
Contact:
- Athena Echols, LPN
- Phone Number: 304-598-6977
- Email: athena.sparks@wvumedicine.org
-
Principal Investigator:
- Tony Realini, MD, MPH
-
-
Wisconsin
-
Madison, Wisconsin, United States, 53705
- Recruiting
- University of Wisconsin-Madison
-
Contact:
- Kelly Boyd
- Phone Number: 608-265-4589
- Email: kmboyd@wisc.edu
-
Principal Investigator:
- Yao Liu, MD
-
-
Participation Criteria
Eligibility Criteria
Ages Eligible for Study
Accepts Healthy Volunteers
Description
Inclusion Criteria:
- Age 18 or older and in good health
Each eye with one of the following qualifying diagnoses (diagnoses may differ between eyes):
- High-risk ocular hypertension (OHT): IOP > 21 mmHg without glaucomatous optic neuropathy (excavation, diffuse or focal thinning or notching of the neuroretinal rim, visible nerve fiber layer defects, or asymmetry of the vertical cup-to-disc ratio of >0.2 between eyes) [enrollment of trial participants with High-risk OHT will be capped at 25% of total enrollment]
- Mild primary open-angle glaucoma: glaucomatous optic neuropathy, visual field mean deviation better than -6.0 dB with no points in the central 5° <15 dB (see figure on next page)
- Moderate primary open-angle glaucoma: glaucomatous optic neuropathy, visual field mean deviation equal to or worse than -6.0 dB but no worse than -12.0 dB and no central 5° points <15 dB or mean deviation -12.0 dB or better with 1 central 5° points <15 dB (see figure on next page).
- Each eye with BCVA 20/200 (UK 6/60) or better
Exclusion Criteria:
- Use of topical IOP-lowering medications for more than 6 cumulative months at any time in the past 5 years
- Any history of IOP-lowering laser (prophylactic iridotomy not included) or surgical procedure
- Advanced POAG in either eye (worse than moderate POAG as defined above)
- Glaucoma other than POAG (including pigmentary and pseudoexfoliation glaucoma) in either eye
- Mean IOP > 35 mmHg at either the screening or baseline visit in either eye
- Narrow or closed angle (Shaffer Grade 0, 1, or 2) in either eye
- Contraindications to SLT or any other study intervention
- Any corneal pathology that would preclude accurate assessment of IOP by Goldmann tonometry in either eye
- Any intraocular surgical procedure within the past 6 months in either eye
- Inability to attend all scheduled study visits
- Pregnant or planning to become pregnant in the next 4 years
Study Plan
How is the study designed?
Design Details
- Primary Purpose: Treatment
- Allocation: Randomized
- Interventional Model: Parallel Assignment
- Masking: None (Open Label)
Arms and Interventions
Participant Group / Arm |
Intervention / Treatment |
---|---|
Experimental: First Randomization: Low Energy SLT
Low energy SLT will consist of 100 treatment spots delivered at 0.4mJ per spot throughout the full 360° treatment, with the exception that energy can be reduced to 0.3mJ if bubbles are seen with 5 consecutive spots and can be increased back to a maximum of 0.4mJ is no bubbles are seen with 5 consecutive spots. Regardless of energy level randomization, energy may be adjusted downward in 0.1mJ increments throughout the procedure in response to factors such as heavy focal pigmentation or patient discomfort. |
SLT performed at low energy
|
Active Comparator: First Randomization: Standard Energy SLT
Standard SLT will be performed as follows: beginning at 0.8 mJ, energy will be titrated up or down within the first 5-10 spots until champagne bubbles are visualized with every 2nd or 3rd spot. Energy can be titrated throughout the procedure, in response to variations in pigmentation, to ensure the appearance of champagne bubbles with every 2nd or 3rd spot throughout the full 360° treatment. Energy should be increased if no bubbles are seen with 5 consecutive spots and decreased if bubbles are seen with 5 consecutive spots. Regardless of energy level randomization, energy may be adjusted downward in 0.1mJ increments throughout the procedure in response to factors such as heavy focal pigmentation or patient discomfort. |
SLT performed at standard energy
|
Experimental: Second Randomization: Annual Low Energy Repeat SLT
At month 12, subjects remaining medication-free will be re-randomized to undergo repeat SLT either annually at low energy or as needed at initially assigned energy (from first randomization).
The method of SLT delivery is as described in the sections above.
|
SLT performed at low energy
|
Active Comparator: Second Randomization: As-Needed Repeat SLT at Initial Energy
At month 12, subjects remaining medication-free will be re-randomized to undergo repeat SLT either annually at low energy or as needed at initially assigned energy (from first randomization).
The method of SLT delivery is as described in the sections above.
|
SLT performed at low energy
SLT performed at standard energy
|
What is the study measuring?
Primary Outcome Measures
Outcome Measure |
Measure Description |
Time Frame |
---|---|---|
12-month survival
Time Frame: 12 months
|
Survival of first SLT through Month 12
|
12 months
|
48-month medication-free survival
Time Frame: 48 months
|
At Month 12, subjects are re-randomized to repeat SLT either annually at low energy or PRN at initially-assigned energy.
The proportion surviving medication-free at Month 48 will be compared between groups
|
48 months
|
Secondary Outcome Measures
Outcome Measure |
Measure Description |
Time Frame |
---|---|---|
Mean IOP
Time Frame: 12 months
|
Mean IOP at month 12
|
12 months
|
Long-term mean IOP
Time Frame: 12, 24, 36, and 48 months
|
Mean IOP at each study visit
|
12, 24, 36, and 48 months
|
Incidence of IOP spikes
Time Frame: 0, 12, 24, 35, and 48 months
|
IOP spikes > 5 mmHg on day of SLT
|
0, 12, 24, 35, and 48 months
|
Collaborators and Investigators
Sponsor
Collaborators
Investigators
- Principal Investigator: Stephen Wisniewski, PhD, University of Pittsburgh
- Study Chair: Tony Realini, MD, MPH, West Virginia University
- Principal Investigator: Goundappa K Balasubramani, PhD, University of Pittsburgh
Publications and helpful links
Helpful Links
Study record dates
Study Major Dates
Study Start (Actual)
Primary Completion (Estimated)
Study Completion (Estimated)
Study Registration Dates
First Submitted
First Submitted That Met QC Criteria
First Posted (Actual)
Study Record Updates
Last Update Posted (Actual)
Last Update Submitted That Met QC Criteria
Last Verified
More Information
Terms related to this study
Additional Relevant MeSH Terms
Other Study ID Numbers
- UG1EY031654 (U.S. NIH Grant/Contract)
Plan for Individual participant data (IPD)
Plan to Share Individual Participant Data (IPD)?
IPD Plan Description
IPD Sharing Time Frame
IPD Sharing Access Criteria
IPD Sharing Supporting Information Type
- STUDY_PROTOCOL
- SAP
- ICF
Drug and device information, study documents
Studies a U.S. FDA-regulated drug product
Studies a U.S. FDA-regulated device product
This information was retrieved directly from the website clinicaltrials.gov without any changes. If you have any requests to change, remove or update your study details, please contact register@clinicaltrials.gov. As soon as a change is implemented on clinicaltrials.gov, this will be updated automatically on our website as well.
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