- ICH GCP
- US Clinical Trials Registry
- Clinical Trial NCT01213082
ProspectiveTrial of Proton Beam Combined With Anti-VEGF Therapy for Exudative Age-related Macular Degeneration (AMD) (PBAMD2)
June 19, 2018 updated by: University of California, Davis
Phase I/II Prospective, Randomized, Double-blinded Study of Intravitreal Anti-VEGF Therapy Combined With Proton Beam Radiation Versus Sham Irradiation in Treating Exudative Age-related Macular Degeneration
The purpose of this study is to test the hypothesis that proton beam irradiation combined with intravitreal anti-VEGF therapy is safe and potentially more effective than intravitreal anti-VEGF therapy alone in eyes with exudative age-related macular degeneration.
Study Overview
Status
Completed
Conditions
Intervention / Treatment
Detailed Description
Radiation combined with anti-VEGF therapy has been shown to be synergistic in treating cancer and result in sustained tumor regression.
On-going clinical trials have shown potential synergism between intravitreal anti-VEGF therapy and epiretinal brachytherapy administered during vitrectomy surgery in treating eyes with exudative age-related macular degeneration (eAMD).
In this study, we test the hypothesis that radiation to the macula administered noninvasively via proton beam is well-tolerated in eyes with eAMD when combined with intravitreal anti-VEGF therapy and that this combination therapy may act synergistically to result in sustained treatment effect in eyes with eAMD.
Study Type
Interventional
Enrollment (Actual)
34
Phase
- Phase 2
- Phase 1
Contacts and Locations
This section provides the contact details for those conducting the study, and information on where this study is being conducted.
Study Locations
-
-
California
-
Sacramento, California, United States, 95817
- University of California Davis Eye Center
-
-
Participation Criteria
Researchers look for people who fit a certain description, called eligibility criteria. Some examples of these criteria are a person's general health condition or prior treatments.
Eligibility Criteria
Ages Eligible for Study
50 years and older (Adult, Older Adult)
Accepts Healthy Volunteers
No
Genders Eligible for Study
All
Description
Inclusion Criteria:
Subjects will be eligible if the following criteria are met:
- Ability to provide written informed consent and comply with study assessments for the full duration of the study
- Age > 50 years
- Patient related considerations
- Able to maintain follow-up for at least 24 months.
- Women must be postmenopausal without a period for at least one year.
- Diagnosed with Age-related Macular Degeneration (ARMD) with active subfoveal choroidal neovascular membrane (CNVM), newly diagnosed or treated with first dose of anti-VEGF therapy within 6 weeks of enrollment
- Visual acuity 20/40 to 20/400
- Lesion size < 12 Disc Area
- Submacular hemorrhage less than 75% of total lesion and not involving foveal center
- Submacular fibrosis less than 25% of total lesion
- Candidate for intravitreal anti-VEGF therapy
Exclusion Criteria:
Subjects who meet any of the following criteria will be excluded from this study:
- Prior enrollment in the study
- Pregnancy (positive pregnancy test) or lactation
- Any other condition that the investigator believes would pose a significant hazard to the subject if the investigational therapy were initiated
- Participation in another simultaneous medical investigation or trial
- Previous treatment with Photodynamic Therapy (PDT) or thermal laser in study eye
- Anti-VEGF therapy within 6 weeks
- Intravitreal or subtenon's Kenalog within 6 months
- Intraocular surgery within 3 months or expected in the next 6 months
- Current or planned participation in other experimental treatments for wet AMD
- Other concurrent retinopathy or optic neuropathy
- Other causes of CNVM, i.e. myopic degeneration or ocular histoplasmosis (POHS)
- Significant media opacity precluding adequate view of the fundus for exam, photography or OCT
- History of radiation therapy to the head or study eye
- Diabetes mellitus or hemoglobin A1c > 6
- Head tremor or h/o claustrophobia precluding positioning for proton irradiation
- Inability to maintain steady fixation with either eye
- History of Malignancy treated within 5 years
- Allergy to Fluorescein dye
Study Plan
This section provides details of the study plan, including how the study is designed and what the study is measuring.
How is the study designed?
Design Details
- Primary Purpose: Treatment
- Allocation: Randomized
- Interventional Model: Parallel Assignment
- Masking: Triple
Arms and Interventions
Participant Group / Arm |
Intervention / Treatment |
---|---|
Experimental: 24GyE + anti-VEGF
|
24GyE proton beam will be administered in 2 fractions 24 hrs apart 2 to 6 weeks after intravitreal anti-VEGF therapy
Other Names:
|
Experimental: 16GyE + anti-VEGF
|
16GyE of Proton Beam Irradiation will be administered in 2 fractions 24 hrs apart 2 to 6 weeks after intravitreal anti-VEGF therapy
Other Names:
|
Sham Comparator: Sham Irradiation + anti-VEGF
|
2 Sessions of Sham Proton Beam Irradiation 24 hrs apart administered 2 to 6 weeks after intravitreal anti-VEGF therapy
Other Names:
|
What is the study measuring?
Primary Outcome Measures
Outcome Measure |
Measure Description |
Time Frame |
---|---|---|
Percent of Eyes With Severe Ocular Adverse
Time Frame: Month 24
|
vision loss of 3 or more lines associated with radiation retinopathy or papillopathy
|
Month 24
|
Secondary Outcome Measures
Outcome Measure |
Measure Description |
Time Frame |
---|---|---|
Number of Anti-VEGF Injections Administered
Time Frame: Month 24
|
efficacy measure
|
Month 24
|
Collaborators and Investigators
This is where you will find people and organizations involved with this study.
Sponsor
Collaborators
Investigators
- Principal Investigator: Susanna S Park, MD PhD, University of California, Davis
Publications and helpful links
The person responsible for entering information about the study voluntarily provides these publications. These may be about anything related to the study.
Study record dates
These dates track the progress of study record and summary results submissions to ClinicalTrials.gov. Study records and reported results are reviewed by the National Library of Medicine (NLM) to make sure they meet specific quality control standards before being posted on the public website.
Study Major Dates
Study Start
September 1, 2010
Primary Completion (Actual)
January 31, 2017
Study Completion (Actual)
January 31, 2017
Study Registration Dates
First Submitted
September 29, 2010
First Submitted That Met QC Criteria
September 30, 2010
First Posted (Estimate)
October 1, 2010
Study Record Updates
Last Update Posted (Actual)
July 17, 2018
Last Update Submitted That Met QC Criteria
June 19, 2018
Last Verified
May 1, 2018
More Information
Terms related to this study
Keywords
Additional Relevant MeSH Terms
Other Study ID Numbers
- 223071
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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