Treatment of Neovascular AMD: Artificial Intelligence in Real-world Setting

Official title

Personalized Treatment Aided by Automated Analysis of Fluid in Active Neovascular Age-related Macular Degeneration (nAMD) in a Prospective, Multicenter, Randomized Study.

Overview

The purpose of this study is to implement quantitative assessment tools for the treatment of active neovascular AMD patients in a real-world setting in order to provide advantages for both patients (treatment burden) and healthcare system (scheduling visits/treatments).

Detailed description

Neovascular age-related macular degeneration (nAMD) is a significant burden to health care systems in industrialized countries. Due to its chronic nature, continuous follow-up and treatment is needed to prevent significant loss of visual function in patients with nAMD.

Vascular endothelial growth factor (VEGF) plays a major role in the pathomechanisms of nAMD and large multicenter trials have shown that intravitreal application of substances which intercept the VEGF pathway can interrupt the progression of nAMD and improve the visual outcome.

As every single injection bears the risk of sight-threatening complications and increases the financial burden to health care providers, several studies have tested different treatment regimens, to decrease the number of applicated injections without compromising the gains in visual acuity. Thereby, strict protocols have been compared to flexible "as needed" regimens (pro re nata, PRN) and regimens with proactive increments of injection intervals (treat and extend, T\&E).

Studies have indicated that the outcome of anti-VEGF treatment is better in standardized clinical trials than in so-called "real world settings". This is explained by tight exclusion criteria of sponsored trials, the shorter follow-up time and the small number of patients that are treated per center, resulting in a better standard of care.

PRN as well as T\&E management showed disadvantages such as significant less vision gain in PRN and possible over treatment in T\&E.

Recently, additional treatment criteria were described to improve the patients care.

Advances in diagnostic precision by SD-OCT using automated algorithms to accurately measure fluid volumes in all compartments are solid tools to determine disease activity. They allow to precisely quantifying the impact of therapeutic parameters on disease activity.

Multicenter study analyses have shown that the amount of intraretinal fluid has a significant effect on vision outcome. Subretinal fluid or Pigmentepithelial detachment have been described to be less important. These findings were the basis for designing an efficient point-of-care management. Automated quantification of the fluid amount using artificial intelligence (AI) may serve as a reliable and objective method to determine the personalized point-of-care.

To prove the efficacy of point-of-care management, prospective studies in real-world settings are required. More data is required to assess the outcome of real-world settings and find ways to improve treatment results, when larger amounts of patients are treated and less resources are available for decision making.

The purpose of this study is to implement quantitative assessment tools for the treatment of neovascular AMD patients in a real-world setting in order to provide advantages for both patients (treatment burden) and healthcare system (scheduling visits/treatments).

Interventions

• Drug anti-VEGF agent
  All patients will be treated at baseline. A loading dose of 2 additionally monthly treatments will be performed at months 1 and 2. Patients showing no intra- and/or subretinal fluid in the central 1mm subfield at month 1, no treatment will be given till any disease activity is documented. Presence/change of sub- and intraretinal fluid will be assessed objectively by AI software and the results will be provided during the visit to the investigator. The final decision for/against retreatment is a
• Drug anti-VEGF agent
  All patients will be treated at baseline. A loading dose of 2 additionally monthly treatments will be performed at months 1 and 2. Patients showing no intra- and/or subretinal fluid in the central 1mm subfield at month 1, no treatment will be given till any disease activity is documented. In this cohort the amount of retinal fluid will not be assessed by AI software at the time of retreatment.

Primary outcome measures

• Number of injections [Time frame: 12 months]

Secondary outcome measures (8)

• Number of injections Best-corrected visual acuity (BCVA) assessed by ETDRS Score [Time frame: 12 months]
• Macular fluid volumes [Time frame: 12 months]
• Formation of geographic-like macular atrophy [Time frame: 12 months]
• Formation of retinal tears [Time frame: 12 months]
• Chorioretinal perfusion [Time frame: 12 months]
• Perfusion of the neovascular lesion [Time frame: 12 months]
• Quality of Life by Questionnaire [Time frame: 12 months]
• Central retinal thickness [Time frame: 12 months]

Eligibility criteria

Inclusion criteria

• Adults ≥ 50 years
• Active neovascular AMD (classic, occult choroidal neovascularization (CNV), RAP lesion or PCV lesion) assessed by OCT, OCTA, FA
• Patients who have a BCVA score better or equal 0.1 (20/200) in the study eye using ETDRS
• No significant fibrosis or geographic atrophy (GA) involving the fovea
• Willingness and ability to comply with study visits and study procedures
• Signed informed consent form

Exclusion criteria

• Hypersensitivity to Fluoresceine, Ranibizumab, Aflibercept, Brolucizumab or to any of the excipients (Polysorbate 20, Sodium dihydrogen phosphate, monohydrate, Disodium hydrogen phosphate, heptahydrate, Sodium chloride, Sucrose)
• Any surgical treatment of the eye within 3 months prior to baseline in the study eye
• History of pseudophakic cystoid macular edema (Irvine Gass Syndrome)
• History of glaucoma filtration surgery, corneal transplant surgery or extracapsular extraction of cataract with phacoemulsification within six months preceding Visit 0, or a history of post-operative complications within the last 12 months preceding Visit 0 in the study eye (uveitis, cyclitis etc.)
• History of uncontrolled glaucoma in the study eye (defined as intraocular pressure (IOP) ≥ 25 mmHg despite treatment with IOP lowering medication), or C/D Ratio >0,9
• Aphakia in the study eye
• Presence of a retinal pigment epithelial tear involving the macula in the study eye
• Any concurrent intraocular condition in the study eye (e.g. advanced cataract or diabetic retinopathy) that, in the opinion of the investigator, will most likely require medical or surgical intervention during the twelve-month study period to prevent or treat visual loss that might result from that condition
• Active intraocular inflammation (grade trace or above) in the study eye
• Active or suspected ocular or periocular infection in the study eye
• Vitreous hemorrhage or history of rhegmatogenous retinal detachment or macular hole in the study eye
• Current iris neovascularization, vitreous hemorrhage, or tractional retinal detachment
• Evidence of current infectious blepharitis, keratitis, scleritis, or conjunctivitis in either eye
• Any concurrent intraocular condition in the study eye that, in the opinion of the investigator, could cause an unwanted effect on treatment efficacy, compliance or require intraocular surgery (except for cataract surgery) during the study period
• Presence of corneal decompensation, haze or scaring with an impact on BCVA

Criteria are shown verbatim from the registry (in English). Final eligibility is always assessed by the study center.

Healthy volunteers: No

Study design

Allocation

Randomized

Model

Parallel assignment

Masking

Double blind

Primary purpose

Treatment

Study locations

Austria · 1 center

• Department of Ophthalmology, Medical University of Vienna, Austria — Vienna

Identifiers

NCT: NCT05093374 · 1672_2019

Primary sources (government registries)

• ClinicalTrials.gov (US NIH)

View this study on ClinicalTrials.gov ↗