- ICH GCP
- US Clinical Trials Registry
- Clinical Trial NCT04504123
MMP-9 Inhibition for Recalcitrant Wet AMD
MMP-9 Inhibition for Recalcitrant Wet Age-Related Macular Degeneration (AMD)
Wet (or neovascular) form of age-related macular degeneration (wAMD) is the most common cause of blindness in the Western world. Currently, anti-vascular endothelial growth factor (VEGF) intravitreal injections (IVI) remain the standard-of-care treatment for wAMD. Previous studies show that about 90% of treated patients lose minimal visual function after 2 years of follow-up. There is still, a subset of 15% patients, incomplete responders, that do not improve and possibly worsen due to the persistence of sub-retinal fluid (with or without intra-retinal fluid) with chronic treatment.
The investigators plan to evaluate the effect of oral doxycycline versus placebo on the anatomic and functional outcomes in persistent sub-retinal eye fluid in neovascular wet age-related macular degeneration. This subset are incomplete or non-responders to current anti-VEGF intravitreal therapy.
Study Overview
Status
Intervention / Treatment
Detailed Description
The investigators plan to conduct a double masked, randomized study to assess the effect of low dose, oral doxycycline 50 mg once a day versus placebo in patients with wet age-related macular degeneration who are incomplete responders to anti-VEGF extended treatment regimens.
The study will be conducted over 9 months with every 3 month assessments; 6 months administration period of doxycycline versus placebo (double masked, randomized) and a 3 month follow up period. The participant visits will occur during clinic visits for standard-of-care intravitreal injections (IVI).
Medical information will be acquired from the standard of care optical coherence tomography (OCT), visual acuity (VA), and IVI administered (number, frequency and type of drug).
Blood plasma and aqueous fluid (anterior chamber tap) samples and study drug tolerability will be obtained at baseline, 6 months and 9 months. Plasma will be obtained to assay for inflammatory markers: MMP-9 levels and questionnaires will be obtained on 1) vision quality of life, and 2) study drug tolerance at Baseline, 6 months and 9 months.
Study Type
Enrollment (Anticipated)
Phase
- Phase 2
Contacts and Locations
Study Contact
- Name: Elliott H Sohn, MD
- Phone Number: 3193563285
- Email: elliott-sohn@uiowa.edu
Study Locations
-
-
Iowa
-
Iowa City, Iowa, United States, 52242
- Recruiting
- University of Iowa Hospitals & Clinics Department of Ophthalmology & Visual Sciences
-
Contact:
- Christine A Sinkey, BSN, CCRC
- Phone Number: 319-353-8723
- Email: christine-sinkey@uiowa.edu
-
Principal Investigator:
- Elliott H Sohn, MD
-
-
Participation Criteria
Eligibility Criteria
Ages Eligible for Study
Accepts Healthy Volunteers
Genders Eligible for Study
Description
Inclusion Criteria:
- Wet age-related macular degeneration (wAMD);
- Solely treated with anti-VEGF IVI for active CNV due to wAMD. However, enrolled patients can have other retinal pathologies such as diabetic retinopathy or vein occlusion for which they are not being treated with anti-VEGF IVI;
- Must have persistent sub-retinal with or without intra-retinal fluid due to active CNV from wAMD despite receiving at least three consecutive injections with any anti-VEGF agent;
- Must not have encountered previous side effects from tetracycline medications.
Exclusion Criteria - Ocular:
- History of uveitis (including endophthalmitis) or presence of intraocular inflammation;
- Presence of significant epiretinal membrane or macular hole causing distortion of macular anatomy;
- Presence of media opacity preventing discerning of fluid on OCT;
- Any prior ophthalmic surgery (including YAG or retinal laser) within the previous 3 months or anticipated need for any ophthalmic surgery (including cataract extraction) for 9 months following randomization;
- History of peribulbar corticosteroid injection to the studied eye or the fellow eye within the past 6 months;
- History of intravitreal triamcinolone acetonide injection to the studied eye within the past 4 months;
- An ocular condition (other than AMD) is present in the studied eye that, in the opinion of the investigator, might alter visual acuity during the course of the study (e.g., retinal vein occlusion, uveitis or other ocular inflammatory disease, neovascular glaucoma, and Irvine-Gass syndrome);
- CNV due to causes other than wAMD;
- Inability to follow up at the 6th and 9th months time points after recruitment;
- Missing two or more consecutive injections during the six months treatment period;
- Patient requiring imminent need for IVI anti-VEGF medication switch or another treatment intervention, such as photodynamic therapy, during the 9 months trial period;
- Presence of fluid associated with geographic atrophy or disciform scar;
- Any patient with sub-retinal and/or intra-retinal fluid that is not due to CNV (eg, overlying areas of geographic atrophy;
- Any patient actively being actively treated for Irvine-Gass Syndrome.
Exclusion Criteria - Systemic:
- Patient with and/or who developed an unstable medical status (e.g., glycemic control, blood pressure, cardiovascular disease, individuals who are unlikely or unable to complete the 9 months trial period) in the opinion of the investigator;
- Significant renal disease (defined as a serum creatinine >2.5 mg/dL);
- Systolic blood pressure >180 mm Hg or diastolic blood pressure >110 mm Hg;
- History of headaches associated with tetracycline therapy
- History of pseudotumor cerebri;
- History of tetracycline therapy within the past 6 months;
- Pregnancy or patient intending to become pregnant within the 9 months of the trial period. For women of child-bearing potential, a pregnancy test will be performed;
- Sexually active women of child-bearing potential not actively practicing birth control by using a medically accepted device or therapy (i.e., intrauterine device, hormonal contraceptive, or barrier device) during the study period (at least 24 months). This is important as doxycycline may interfere with the effectiveness of hormonal contraceptives. Hence, sexually active women of child-bearing potential who use a hormonal contraceptive will be required to use a second form of contraception to safeguard against contraceptive failure while participating in the study;
- Known allergy/intolerance to doxycycline, tetracyclines, or any ingredient in the study drug or placebo;
- Patients receiving phenytoin, barbiturates, carbamazepine, digoxin, or isotretinoin; patients with gastroparesis; patients with a history of gastrectomy, gastric bypass surgery, or otherwise deemed achlorhydric should all be excluded due to altered doxycycline pharmacokinetics and/or bioavailability;
- Patients taking strontium, acitretin, or tretinoin should excluded due to the potential for serious interactions with doxycycline;
- Patients with abnormal ALT or AST at baseline will be referred to their primary care physician for medical clearance for participation in this study.
Study Plan
How is the study designed?
Design Details
- Primary Purpose: Treatment
- Allocation: Randomized
- Interventional Model: Parallel Assignment
- Masking: Quadruple
Arms and Interventions
Participant Group / Arm |
Intervention / Treatment |
---|---|
Experimental: Doxycycline
Participants received doxycycline hyclate 50 mg capsule orally once a day for 6 months
|
Doxycycline Hyclate capsules, USP 50 mg
Other Names:
|
Placebo Comparator: Placebo
Participants received placebo (inactive) capsule orally once a day for 6 months
|
Placebo
Other Names:
|
What is the study measuring?
Primary Outcome Measures
Outcome Measure |
Measure Description |
Time Frame |
---|---|---|
Resolution of the persistent retinal fluid on optical coherence tomography (OCT)
Time Frame: 9 months
|
percentage of patients with retinal fluid-free status
|
9 months
|
Secondary Outcome Measures
Outcome Measure |
Measure Description |
Time Frame |
---|---|---|
Change in optical coherence tomography (OCT) central media thickness (CMT)
Time Frame: 9 months compared to baseline
|
mean change in central media thickness
|
9 months compared to baseline
|
Change in best corrected visual acuity (BCVA)
Time Frame: 6 months and 9 months compared to Baseline
|
mean change in logMAR / percentage of patients with a gain or loss of more than 5 ETDRS letters
|
6 months and 9 months compared to Baseline
|
Number of intravitreal injections (IVI) administered
Time Frame: 6 months and 9 months
|
total number of anti-VEGF intravitreal injections
|
6 months and 9 months
|
Inflammatory mediators matrix metalloproteinases MMP-9 and MMP-9 activity
Time Frame: Baseline, 6 months and 9 months
|
anterior eye aqueous fluid and blood plasma
|
Baseline, 6 months and 9 months
|
Other Outcome Measures
Outcome Measure |
Measure Description |
Time Frame |
---|---|---|
Ocular Adverse Events
Time Frame: Baseline to 9 months
|
intra-ocular pressure elevation ( more than 10 mmHg) requiring topical ocular hypertensive medications, endophthalmitis, retinal tear and detachment, uveitis, and thromboembolic events will be recorded
|
Baseline to 9 months
|
Systemic Adverse Events
Time Frame: Baseline to 9 months
|
Allergy or hypersensitivity drug reactions
|
Baseline to 9 months
|
Collaborators and Investigators
Sponsor
Investigators
- Principal Investigator: Elliott H Sohn, MD, University of Iowa
Publications and helpful links
General Publications
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- Scott IU, Jackson GR, Quillen DA, Klein R, Liao J, Gardner TW. Effect of doxycycline vs placebo on retinal function and diabetic retinopathy progression in mild to moderate nonproliferative diabetic retinopathy: a randomized proof-of-concept clinical trial. JAMA Ophthalmol. 2014 Sep;132(9):1137-42. doi: 10.1001/jamaophthalmol.2014.1422.
- Comparison of Age-related Macular Degeneration Treatments Trials (CATT) Research Group; Martin DF, Maguire MG, Fine SL, Ying GS, Jaffe GJ, Grunwald JE, Toth C, Redford M, Ferris FL 3rd. Ranibizumab and bevacizumab for treatment of neovascular age-related macular degeneration: two-year results. Ophthalmology. 2012 Jul;119(7):1388-98. doi: 10.1016/j.ophtha.2012.03.053. Epub 2012 May 1.
Study record dates
Study Major Dates
Study Start (Actual)
Primary Completion (Anticipated)
Study Completion (Anticipated)
Study Registration Dates
First Submitted
First Submitted That Met QC Criteria
First Posted (Actual)
Study Record Updates
Last Update Posted (Estimate)
Last Update Submitted That Met QC Criteria
Last Verified
More Information
Terms related to this study
Additional Relevant MeSH Terms
- Eye Diseases
- Retinal Degeneration
- Retinal Diseases
- Macular Degeneration
- Wet Macular Degeneration
- Molecular Mechanisms of Pharmacological Action
- Anti-Infective Agents
- Enzyme Inhibitors
- Protein Synthesis Inhibitors
- Antiprotozoal Agents
- Antiparasitic Agents
- Antimalarials
- Anti-Bacterial Agents
- Doxycycline
- Tetracycline
Other Study ID Numbers
- 202001041
Plan for Individual participant data (IPD)
Plan to Share Individual Participant Data (IPD)?
IPD Plan Description
Drug and device information, study documents
Studies a U.S. FDA-regulated drug product
Studies a U.S. FDA-regulated device product
product manufactured in and exported from the U.S.
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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