Treatment of Polypoidal Choroidal Vasculopathy in Pachychoroid

Overview

This study will evaluate patients with diagnosis of polypoidal choroidal vasculopathy (PCV) in pachychoroid treated with combined therapy, consisting in photodynamic therapy (PDT) and 3 intravitreal therapy (IVT) of Aflibercept monthly. This is a single center, prospective case-series study. The investigators are going to evaluate Corrected Distance Visual Acuity (CDVA), disease activity, retinal and choroidal thicknesses and number of injection per year, during a twelve month follow up. The aim of this study is to verify if the combined therapy can act on the insult induced by the pachychoroid and on the neovascular lesion itself in this sub-population of patients with PCV in pachychoroid,

Full Title of Study: “Polypoidal Choroidal Vasculopathy in Pachychoroid: Aflibercept + PDT Combined Therapy”

Study Type

  • Study Type: Interventional
  • Study Design
    • Intervention Model: Single Group Assignment
    • Primary Purpose: Treatment
    • Masking: None (Open Label)
  • Study Primary Completion Date: June 1, 2018

Detailed Description

This study evaluates patients with diagnosis of polypoidal choroidal vasculopathy (PCV) in pachychoroid treated with combined therapy, consisting in photodynamic therapy (PDT) and 3 intravitreal therapy (IVT) of Aflibercept monthly. Inclusion criteria are the presence of haemorrhagic or exudative PCV diagnosed by Optical Coherence Tomography (OCT) and Indocyanine Green Angiography (ICGA) and the mean central choroidal thickness > 250 µm. Exclusion criteria comprehend ocular comorbidity, previous cardiovascular events and different ocular surgical procedures form cataract surgery. Participants undergo a thorough ophthalmic assessment that included best corrected visual acuity (CDVA), slit lamp biomicroscopy and dilated funduscopic examination. OCT, OCT-Angiography (OCT-A), ICGA and Fluoresceine Angiography (FA) were performed for all patients. The 12-month follow-up foresee monthly revaluations of the above measurements, excluding FA, repeated only on clinical judgement. CDVA will be measured using LogMAR. Choroidal and retinal thicknesses will be automatically measured by digital software OCT- integrated (IMAGEnet). All patients will be treated with a loading dose of Aflibercept combined with PDT within the first 7 days of the first intravitreal therapy. The spot size is calculated by adding 1000 μm to the greater linear dimension of the lesion. No additional therapy will be performed during follow-up unless signs of reactivation.

Interventions

  • Drug: Aflibercept Injection
    • Patients will be treated with combined therapy to determine the synergy of this treatment, causing anti- Vascular Endothelial Growth Factor (anti-VEGF) to block neovascular exudation and photodynamic therapy to close aneurismal vessel and reduce choroidal vascular congestion.

Arms, Groups and Cohorts

  • Experimental: Combined therapy
    • Treatment consisting in photodynamic therapy (Verteporfin, 6 mg/m2 × Body Surface Area (BSA) = Total Drug Dose; Total Drug Dose ÷ 2.0 mg/mL = Volume of Reconstituted Verteporfin; 30 mL – Volume of Reconstituted Verteporfin = Volume of 5% dextrose in water. Light dose is 50 J/cm2 administered at an intensity of 600 mW/cm2. This dose is administered over 83 seconds) and 3 intravitreal therapy of Aflibercept (2 mg/0,05 ml)monthly, the first of which performed within 7 days from photodynamic therapy.

Clinical Trial Outcome Measures

Primary Measures

  • Corrected Distance Visual Acuity
    • Time Frame: twelve months
    • measured in logMAR notation using Early Treatment of Diabetic Retinopathy Study charts (CC-100XP LCD System for ETDRS Chart display)
  • Disease Activity
    • Time Frame: twelve months
    • measured as percentage of patients with subretinal or intraretinal fluid
  • Retinal Thickness
    • Time Frame: twelve months
    • Central retinal thickness (1 mm central foveal thickness) and mean macular thickness (second and the third 6-mm grid including parafoveal and perifoveal macular area)
  • Choroidal thickness
    • Time Frame: twelve months
    • Central choroidal thickness (1 mm central subfoveal thickness) and mean choroideal thickness (second and the third 6-mm grid including parafoveal and perifoveal choroidal area)

Secondary Measures

  • Number of injections per year
    • Time Frame: twelve months
    • Number of intravitreal injection administered in a year

Participating in This Clinical Trial

Inclusion Criteria

  • presence of haemorrhagic or exudative PCV diagnosed by OCT and ICGA
  • Mean central choroidal thickness > 250 µm

Exclusion Criteria

  • ocular comorbidity
  • previous cardiovascular events
  • different ocular surgical procedures form cataract surgery

Gender Eligibility: All

Minimum Age: N/A

Maximum Age: N/A

Are Healthy Volunteers Accepted: No

Investigator Details

  • Lead Sponsor
    • Azienda Ospedaliera Universitaria Policlinico Paolo Giaccone Palermo
  • Provider of Information About this Clinical Study
    • Principal Investigator: Salvatore Cillino, Head of the Ophthalmology Section of the Department of Biomedicine, Neurosciences and Advanced Diagnostic – Azienda Ospedaliera Universitaria Policlinico Paolo Giaccone Palermo
  • Overall Official(s)
    • Salvatore Cillino, MD PhD, Principal Investigator, AOUP Paolo Giaccone, Palermo

References

Yuzawa M, Mori R, Kawamura A. The origins of polypoidal choroidal vasculopathy. Br J Ophthalmol. 2005 May;89(5):602-7.

Koh A, Lai TYY, Takahashi K, Wong TY, Chen LJ, Ruamviboonsuk P, Tan CS, Feller C, Margaron P, Lim TH, Lee WK; EVEREST II study group. Efficacy and Safety of Ranibizumab With or Without Verteporfin Photodynamic Therapy for Polypoidal Choroidal Vasculopathy: A Randomized Clinical Trial. JAMA Ophthalmol. 2017 Nov 1;135(11):1206-1213. doi: 10.1001/jamaophthalmol.2017.4030.

Wong TY, Ogura Y, Lee WK, Iida T, Chen SJ, Mitchell P, Gemmy Cheung CM, Zhang Z, Leal S, Ishibashi T; PLANET Investigators. Efficacy and Safety of Intravitreal Aflibercept for Polypoidal Choroidal Vasculopathy: Two-Year Results of the Aflibercept in Polypoidal Choroidal Vasculopathy Study. Am J Ophthalmol. 2019 Aug;204:80-89. doi: 10.1016/j.ajo.2019.02.027. Epub 2019 Mar 6.

Pang CE, Freund KB. Pachychoroid neovasculopathy. Retina. 2015 Jan;35(1):1-9. doi: 10.1097/IAE.0000000000000331.

Balaratnasingam C, Lee WK, Koizumi H, Dansingani K, Inoue M, Freund KB. Polypoidal Choroidal Vasculopathy: A Distinct Disease or Manifestation of Many? Retina. 2016 Jan;36(1):1-8. doi: 10.1097/IAE.0000000000000774.

Yanagi Y, Ting DSW, Ng WY, Lee SY, Mathur R, Chan CM, Yeo I, Wong TY, Cheung GCM. CHOROIDAL VASCULAR HYPERPERMEABILITY AS A PREDICTOR OF TREATMENT RESPONSE FOR POLYPOIDAL CHOROIDAL VASCULOPATHY. Retina. 2018 Aug;38(8):1509-1517. doi: 10.1097/IAE.0000000000001758.

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