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| Name | Class |
|---|---|
| National University Hospital, Singapore | OTHER |
| Tan Tock Seng Hospital | OTHER |
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In this study, we aim to evaluate the efficacy and safety of an individualized dosing schedule comprising Aflibercept and RF-PDT in patients with polypoidal choroidal vasculopathy (PCV). The primary objective is to compare the polyp closure rate at week 12 between the 2 treatment groups. The secondary aims include comparing visual, anatomical, treatment burden and clinical biomarkers between each treatment group.
Age related macular degeneration (AMD) is one of the leading causes of blindness worldwide. In its exudative or wet form, choroidal neovascularization (CNV) causes an exudative maculopathy resulting in sudden loss of vision with severe effects on patients' quality of life. Intravitreal injections of anti-vascular endothelial growth factor agents (anti-VEGF) have become the mainstay of treatment for AMD CNV and has been shown to have favorable outcomes in most AMD CNV subtypes. In the Asian population, however, a particular subtype called polypoidal choroidal vasculopathy (PCV), which affects about 50% of exudative maculopathy, has been shown to have less favorable response to anti-VEGF therapy.
The best treatment option for PCV has remained unclear. Current best evidence is from 2 recent randomized controlled trials, the EVEREST II trial which compares the efficacy of ranibizumab with or without photodynamic therapy (PDT) for treatment of PCV and the PLANET trial which compares Aflibercept monotherapy against a rescue PDT when Aflibercept is deemed ineffective. Both trials have reported significant improvement in visual outcomes, however there remain significant unanswered questions and unmet needs regarding the use of Aflibercept and PDT as the best treatment for PCV.
In this study, we aim to compare the efficacy of combination Aflibercept with RF-PDT (at baseline) and Aflibercept monotherapy. This particular strategy has not been studies before and represents the amalgamation of unanswered questions from the best evidence to date for the treatment of PCV.
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| Label | Type | Description | Intervention Names |
|---|---|---|---|
| Aflibercept + RF-PDT | Active Comparator | Patients with symptomatic macular PCV (n=80) as confirmed by Indocyanine green Angiography(ICGA) will be treated with Aflibercept (dosage=2mg/0.05ml) through an intravitreal injection + RF-PDT ( 6mg/m2 intravenous infusion of Verteporfin followed by laser light at a dose rate of 25 Joules/cm2) at baseline. Aflibercept- 1st treatment (baseline) followed by minimum retreatment interval of 4 weeks (from Baseline to week 8) and then retreatment at intervals of 4 weeks pro re nata (PRN) retreatment( week 12-48). Primary endpoint at week 52. RF-PDT treatment at baseline followed by pro re nata (PRN) at 12 week intervals. At each visit, subjects will be assessed based on BCVA, ophthalmic examination and Optical Coherence Tomography (OCT) |
|
| Aflibercept + sham RF-PDT | Active Comparator | Patients with symptomatic macular PCV (n=80) as confirmed by Indocyanine green Angiography(ICGA) will be treated with Aflibercept (dosage=2mg/0.05ml) through an intravitreal injection, at baseline. A minimum of 1 injection(baseline) followed by minimum pro re nata (PRN) retreatment interval of 4 weeks ( from baseline to week 8) and then a minimum of 4 weeks retreatment thereafter (week 12-48). Primary endpoint at week 52. Sham RF-PDT treatment at baseline followed by pro re nata (PRN) at 12 week intervals. At each visit, subjects will be assessed based on Best Corrected Visual Acuity (BCVA), ophthalmic examination and Optical Coherence Tomography (OCT) |
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| Name | Type | Description | Arm Group Labels | Other Names |
|---|---|---|---|---|
| Aflibercept + reduced fluence photodynamic therapy (RF-PDT) | Drug | Aflibercept dosage of 2mg in 0.05ml along with intravenous infusion of Verteporfin (6mg/m2)followed by laser light at a dosage of 25Joule/cm2 |
| Measure | Description | Time Frame |
|---|---|---|
| Polyp Closure rate | polyp closure rate at week 12 between the 2 treatment groups. | 12 weeks |
| Measure | Description | Time Frame |
|---|---|---|
| Optical Coherence Tomography | For evidence of intraretinal or subretinal fluid, ill-defined hyper-reflective material and/or new hemorrhage | 12 months |
| Optical Coherence Tomography-Angiograph | For evidence of intraretinal or subretinal fluid, ill-defined hyper-reflective material and/or new hemorrhage |
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Inclusion Criteria:
Patients aged over 50 years old at the time of informed consent.
Provide written informed consent.
Willingness and ability to comply with all scheduled visits and study procedures.
Confirmed diagnosis of symptomatic macular PCV based ICGA.
Activity of PCV confirmed by exudative activity involving the macula on OCT or Fluorescein Angiography (FA) or both.
Presence of intra retinal or subretinal fluid/blood as seen on OCT
Treatment naïve
An ETDRS BCVA of at least 4 letters (Snellen equivalent approximately 20/800 or better) in the study eye.
Greatest Linear Dimension (GLD) of the total lesion area (BVN + polyps) <5400µm (~9 mucopolysaccharidoses (MPS) Disc Areas) as delineated by ICGA.
Exclusion Criteria: - Participant
Other Eye
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| Name | Affiliation | Role |
|---|---|---|
| Gemmy Cheung Chui Ming | Singapore National Eye Centre | Principal Investigator |
| Facility | Status | City | State | ZIP | Country | Contacts |
|---|---|---|---|---|---|---|
| Singapore National Eye Centre | Singapore | Singapore | 168751 | Singapore | ||
| National University Hospital |
| PubMed Identifier | Type | Citation | Retractions |
|---|---|---|---|
| 40146166 | Derived | Chong YJ, Teo KYC, Wong W, Tan ACS, Su X, Gilead N, Chan HH, Ibrahim F, Fenner B, Ong C, Sun C, Sim S, Chee C, Chakravarthy U, Cheung CMG. Aflibercept With vs Without Reduced-Fluence Photodynamic Therapy for Polypoidal Choroidal Vasculopathy: A Randomized Clinical Trial. JAMA Ophthalmol. 2025 May 1;143(5):393-399. doi: 10.1001/jamaophthalmol.2025.0250. | |
| 34266844 |
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Multi-center randomized, double-masked clinical trial.
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| Aflibercept + sham reduced fluence photodynamic therapy (RF-PDT) | Drug | Aflibercept dosage of 2mg in 0.05ml along with sham photodynamic therapy |
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|
| 12 months |
| Color Fundus photography | inspect anomalies associated to diseases that affect the eye, and to monitor their progression | baseline, month 3, month12 |
| Autofluorescence Photography | Retinal imaging | baseline, month 3, month12 |
| Fundus Fluorescein Angiography | Retinal circulation | Baseline, month 3, month 12 |
| Intra Ocular Pressure (IOP) | Fluid Pressure in eye | Baseline, 12 months |
| Singapore |
| Singapore |
| Vyas CH, Cheung CMG, Tan C, Chee C, Wong K, Jordan-Yu JMN, Wong TY, Tan A, Fenner B, Sim S, Teo KYC. Multicentre, randomised clinical trial comparing intravitreal aflibercept monotherapy versus aflibercept combined with reduced-fluence photodynamic therapy (RF-PDT) for the treatment of polypoidal choroidal vasculopathy. BMJ Open. 2021 Jul 15;11(7):e050252. doi: 10.1136/bmjopen-2021-050252. |
| ID | Term |
|---|---|
| D000092342 | Polypoidal Choroidal Vasculopathy |
| ID | Term |
|---|---|
| D020256 | Choroidal Neovascularization |
| D015862 | Choroid Diseases |
| D014603 | Uveal Diseases |
| D005128 | Eye Diseases |
| D009389 | Neovascularization, Pathologic |
| D008679 | Metaplasia |
| D010335 | Pathologic Processes |
| D013568 | Pathological Conditions, Signs and Symptoms |
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| ID | Term |
|---|---|
| C533178 | aflibercept |
| D000077362 | Verteporfin |
| ID | Term |
|---|---|
| D011166 | Porphyrins |
| D045725 | Tetrapyrroles |
| D011758 | Pyrroles |
| D001393 | Azoles |
| D006573 | Heterocyclic Compounds, 1-Ring |
| D006571 | Heterocyclic Compounds |
| D006576 | Heterocyclic Compounds, 4 or More Rings |
| D000072471 | Heterocyclic Compounds, Fused-Ring |
| D047028 | Macrocyclic Compounds |
| D011083 | Polycyclic Compounds |
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