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Śpiewak D, Drzyzga Ł, Dorecka M, Wyględowska-Promieńska D. Summary of the Therapeutic Options for Patients with Dry and Neovascular AMD. J Clin Med 2024; 13:4227. [PMID: 39064267 PMCID: PMC11278184 DOI: 10.3390/jcm13144227] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/06/2024] [Revised: 07/15/2024] [Accepted: 07/17/2024] [Indexed: 07/28/2024] Open
Abstract
Age-related macular degeneration (AMD) is the leading cause of irreversible blindness worldwide and a severe medical and social problem. The steadily increasing number of patients is related to the aging of the population. So far, many factors affecting the development of AMD have been identified, which can be divided into non-modifiable, including genetic factors, age, and sex, and modifiable or environmental factors, such as smoking, poor diet, and hypertension. Early stages of age-related macular degeneration are characterized by fundus drusen and abnormalities in the retinal pigment epithelium. In late stages, geographic atrophy and choroidal neovascularization (CNV) are observed. The treatment of AMD, especially its advanced forms, is very challenging. Intensive research has made it possible to treat advanced stages of the dry form of AMD with pegcetacoplan and avacincaptad pegol, new drugs approved for use in the US. Pegcetacoplan targets the C3 and avacincaptad pegol targets the C5, the pivotal proteins of the complement cascade. The drugs are administered by intravitreal injection. The gold standard for neovascular AMD (nAMD) consists of intravitreal injections of anti-vascular endothelial growth factor (anti-VEGF) drugs such as bevacizumab, ranibizumab, aflibercept, brolucizumab, and faricimab. Treatment can be administered according to the fixed, pro-re-nata, and treat-and-extend regimens. The latter seems to have the best effect on improving visual acuity (VA) and the maximum therapeutic benefit. The search continues for the best ways to deliver intravitreal drugs. Current methods include sustained-release implants and hydrogel platforms for drug release, while the most promising future pathways for treating dry and nAMD are stem cell and gene therapy.
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Affiliation(s)
- Dorota Śpiewak
- Department of Ophthalmology, Prof. K. Gibiński University Clinical Center, Medical University of Silesia, 40-514 Katowice, Poland
- Clinical Ophthalmology Center Okolux, 40-754 Katowice, Poland
| | - Łukasz Drzyzga
- Department of Ophthalmology, Prof. K. Gibiński University Clinical Center, Medical University of Silesia, 40-514 Katowice, Poland
- Clinical Ophthalmology Center Okolux, 40-754 Katowice, Poland
| | - Mariola Dorecka
- Department of Ophthalmology, Prof. K. Gibiński University Clinical Center, Medical University of Silesia, 40-514 Katowice, Poland
- Department of Ophthalmology, Faculty of Medical Sciences in Katowice, Medical University of Silesia, 40-287 Katowice, Poland
| | - Dorota Wyględowska-Promieńska
- Department of Ophthalmology, Prof. K. Gibiński University Clinical Center, Medical University of Silesia, 40-514 Katowice, Poland
- Department of Ophthalmology, Faculty of Medical Sciences in Katowice, Medical University of Silesia, 40-287 Katowice, Poland
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Kalogriopoulos NA, Tei R, Yan Y, Ravalin M, Li Y, Ting A. Synthetic G protein-coupled receptors for programmable sensing and control of cell behavior. BIORXIV : THE PREPRINT SERVER FOR BIOLOGY 2024:2024.04.15.589622. [PMID: 38659921 PMCID: PMC11042292 DOI: 10.1101/2024.04.15.589622] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 04/26/2024]
Abstract
Synthetic receptors that mediate antigen-dependent cell responses are transforming therapeutics, drug discovery, and basic research. However, established technologies such as chimeric antigen receptors (CARs) can only detect immobilized antigens, have limited output scope, and lack built-in drug control. Here, we engineer synthetic G protein-coupled receptors (GPCRs) capable of driving a wide range of native or nonnative cellular processes in response to user-defined antigen. We achieve modular antigen gating by engineering and fusing a conditional auto-inhibitory domain onto GPCR scaffolds. Antigen binding to a fused nanobody relieves auto-inhibition and enables receptor activation by drug, thus generating Programmable Antigen-gated G protein-coupled Engineered Receptors (PAGERs). We create PAGERs responsive to more than a dozen biologically and therapeutically important soluble and cell surface antigens, in a single step, from corresponding nanobody binders. Different PAGER scaffolds permit antigen binding to drive transgene expression, real-time fluorescence, or endogenous G protein activation, enabling control of cytosolic Ca 2+ , lipid signaling, cAMP, and neuronal activity. Due to its modular design and generalizability, we expect PAGER to have broad utility in discovery and translational science.
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Santorsola M, Capuozzo M, Nasti G, Sabbatino F, Di Mauro A, Di Mauro G, Vanni G, Maiolino P, Correra M, Granata V, Gualillo O, Berretta M, Ottaiano A. Exploring the Spectrum of VEGF Inhibitors' Toxicities from Systemic to Intra-Vitreal Usage in Medical Practice. Cancers (Basel) 2024; 16:350. [PMID: 38254839 PMCID: PMC10813960 DOI: 10.3390/cancers16020350] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/24/2023] [Revised: 01/11/2024] [Accepted: 01/11/2024] [Indexed: 01/24/2024] Open
Abstract
The use of Vascular Endothelial Growth Factor inhibitors (VEGFi) has become prevalent in the field of medicine, given the high incidence of various pathological conditions necessitating VEGF inhibition within the general population. These conditions encompass a range of advanced neoplasms, such as colorectal cancer, non-small cell lung cancer, renal cancer, ovarian cancer, and others, along with ocular diseases. The utilization of VEGFi is not without potential risks and adverse effects, requiring healthcare providers to be well-prepared for identification and management. VEGFi can be broadly categorized into two groups: antibodies or chimeric proteins that specifically target VEGF (bevacizumab, ramucirumab, aflibercept, ranibizumab, and brolucizumab) and non-selective and selective small molecules (sunitinib, sorafenib, cabozantinib, lenvatinib, regorafenib, etc.) designed to impede intracellular signaling of the VEGF receptor (RTKi, receptor tyrosine kinase inhibitors). The presentation and mechanisms of adverse effects resulting from VEGFi depend primarily on this distinction and the route of drug administration (systemic or intra-vitreal). This review provides a thorough examination of the causes, recognition, management, and preventive strategies for VEGFi toxicities with the goal of offering support to oncologists in both clinical practice and the design of clinical trials.
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Affiliation(s)
- Mariachiara Santorsola
- Istituto Nazionale Tumori di Napoli, IRCCS “G. Pascale”, via M. Semmola, 80131 Naples, Italy; (M.S.); (G.N.); (A.D.M.); (P.M.); (M.C.); (V.G.)
| | | | - Guglielmo Nasti
- Istituto Nazionale Tumori di Napoli, IRCCS “G. Pascale”, via M. Semmola, 80131 Naples, Italy; (M.S.); (G.N.); (A.D.M.); (P.M.); (M.C.); (V.G.)
| | - Francesco Sabbatino
- Oncology Unit, Department of Medicine, Surgery and Dentistry, University of Salerno, 84081 Salerno, Italy;
| | - Annabella Di Mauro
- Istituto Nazionale Tumori di Napoli, IRCCS “G. Pascale”, via M. Semmola, 80131 Naples, Italy; (M.S.); (G.N.); (A.D.M.); (P.M.); (M.C.); (V.G.)
| | - Giordana Di Mauro
- Department of Human Pathology “G. Barresi”, University of Messina, 98125 Messina, Italy;
| | - Gianluca Vanni
- Breast Unit, Department of Surgical Science, PTV Policlinico Tor Vergata University, 00133 Rome, Italy;
| | - Piera Maiolino
- Istituto Nazionale Tumori di Napoli, IRCCS “G. Pascale”, via M. Semmola, 80131 Naples, Italy; (M.S.); (G.N.); (A.D.M.); (P.M.); (M.C.); (V.G.)
| | - Marco Correra
- Istituto Nazionale Tumori di Napoli, IRCCS “G. Pascale”, via M. Semmola, 80131 Naples, Italy; (M.S.); (G.N.); (A.D.M.); (P.M.); (M.C.); (V.G.)
| | - Vincenza Granata
- Istituto Nazionale Tumori di Napoli, IRCCS “G. Pascale”, via M. Semmola, 80131 Naples, Italy; (M.S.); (G.N.); (A.D.M.); (P.M.); (M.C.); (V.G.)
| | - Oreste Gualillo
- SERGAS (Servizo Galego de Saude), NEIRID Laboratory (Neuroendocrine Interactions in Rheumatology and Inflammatory Diseases), IDIS (Instituto de Investigación Sanitaria de Santiago), Research Laboratory 9, Santiago University Clinical Hospital, 15706 Santiago de Compostela, Spain;
| | - Massimiliano Berretta
- Department of Clinical and Experimental Medicine, University of Messina, Via Consolare Valeria, 98125 Messina, Italy
| | - Alessandro Ottaiano
- Istituto Nazionale Tumori di Napoli, IRCCS “G. Pascale”, via M. Semmola, 80131 Naples, Italy; (M.S.); (G.N.); (A.D.M.); (P.M.); (M.C.); (V.G.)
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Ke X, Jiang H, Li Q, Luo S, Qin Y, Li J, Xie Q, Zheng Q. Preclinical evaluation of KH631, a novel rAAV8 gene therapy product for neovascular age-related macular degeneration. Mol Ther 2023; 31:3308-3321. [PMID: 37752703 PMCID: PMC10638048 DOI: 10.1016/j.ymthe.2023.09.019] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/21/2023] [Revised: 08/31/2023] [Accepted: 09/23/2023] [Indexed: 09/28/2023] Open
Abstract
The upregulation of vascular endothelial growth factor (VEGF) is strongly associated with the development of choroidal neovascularization (CNV) in patients with neovascular age-related macular degeneration (nAMD). Currently, the standard treatment for nAMD involves frequent intravitreal injections of anti-VEGF agents, which inhibit the growth of new blood vessels and prevent leakage. However, this treatment regimen places a significant burden on patients, their families, and healthcare providers due to the need for repeated visits to the clinic for injections. Gene therapy, which enables the sustained expression of anti-VEGF proteins after a single injection, can dramatically reduce the treatment burden. KH631 is a recombinant adeno-associated virus 8 vector that encodes a human VEGF receptor fusion protein, and it is being developed as a long-term treatment for nAMD. In preclinical studies using non-human primates, subretinal administration of KH631 at a low dose of 3 × 108 vg/eye resulted in remarkable retention of the transgene product in the retina and prevented the formation and progression of grade IV CNV lesions. Furthermore, sustained transgene expression was observed for more than 96 weeks. These findings suggest that a single subretinal injection of KH631 has the potential to offer a one-time, low-dose treatment for nAMD patients.
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Affiliation(s)
- Xiao Ke
- Chengdu Origen Biotechnology Co., Ltd, Chengdu, China; Chengdu Kanghong Pharmaceuticals Group Co Ltd, Chengdu, China
| | - Hao Jiang
- Chengdu Origen Biotechnology Co., Ltd, Chengdu, China; Therapeutic Proteins Key Laboratory of Sichuan Province, Chengdu, China
| | - Qingwei Li
- Chengdu Origen Biotechnology Co., Ltd, Chengdu, China; Therapeutic Proteins Key Laboratory of Sichuan Province, Chengdu, China
| | - Shuang Luo
- Chengdu Origen Biotechnology Co., Ltd, Chengdu, China; Therapeutic Proteins Key Laboratory of Sichuan Province, Chengdu, China
| | - Yingfei Qin
- Chengdu Origen Biotechnology Co., Ltd, Chengdu, China
| | - Jing Li
- Chengdu Origen Biotechnology Co., Ltd, Chengdu, China
| | - Qing Xie
- Chengdu Origen Biotechnology Co., Ltd, Chengdu, China; Therapeutic Proteins Key Laboratory of Sichuan Province, Chengdu, China
| | - Qiang Zheng
- Chengdu Origen Biotechnology Co., Ltd, Chengdu, China; Chengdu Kanghong Pharmaceuticals Group Co Ltd, Chengdu, China; Therapeutic Proteins Key Laboratory of Sichuan Province, Chengdu, China.
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Veritti D, Sarao V, Chhablani J, Loewenstein A, Lanzetta P. The ideal intravitreal injection setting: office, ambulatory surgery room or operating theatre? A narrative review and international survey. Graefes Arch Clin Exp Ophthalmol 2023; 261:3299-3306. [PMID: 37199802 PMCID: PMC10587024 DOI: 10.1007/s00417-023-06108-y] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/31/2023] [Revised: 05/02/2023] [Accepted: 05/08/2023] [Indexed: 05/19/2023] Open
Abstract
PURPOSE This study reviews evidence and provides recommendations for the ideal setting of intravitreal injection (IVI) administration of vascular endothelial growth factor (VEGF) inhibitors. METHODS A multi-step approach was employed, including content analysis of regulations and guidelines, a systematic literature review, and an international survey assessing perioperative complications and endophthalmitis incidence in relation to injection settings. The literature review searched PubMed and Cochrane databases from 2006 to 2022, focusing on studies reporting correlations between complications and treatment settings. The survey utilized a web-based questionnaire distributed to clinical sites and the international ophthalmic community, with data managed using electronic capture tools. RESULTS We reviewed regulations and guidelines from 23 countries across five continents, finding significant variation in IVI administration settings. In most countries, IVI is primarily administered in outpatient clean rooms (96%) or offices (39%), while in others, it is restricted to ambulatory surgery rooms or hospital-based operating theatres (4%). The literature review found that endophthalmitis risk after IVI is generally low (0.01% to 0.26% per procedure), with no significant difference between office-based and operating room settings. The international survey (20 centers, 96,624 anti-VEGF injections) found low overall incidences of severe perioperative systemic adverse events and endophthalmitis, independent of injection settings. CONCLUSION No significant differences in perioperative complications were observed among various settings, including operating theatres, ambulatory surgery rooms, offices, hospitals, or extra-hospital environments. Choosing the appropriate clinical setting can optimize patient management, potentially increasing effectiveness, quality, productivity, and capacity.
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Affiliation(s)
- Daniele Veritti
- Department of Medicine - Ophthalmology, University of Udine, Piazzale Santa Maria Della Misericordia, 33100, Udine, Italy
| | - Valentina Sarao
- Department of Medicine - Ophthalmology, University of Udine, Piazzale Santa Maria Della Misericordia, 33100, Udine, Italy
- Istituto Europeo Di Microchirurgia Oculare - IEMO, Udine, Italy
| | - Jay Chhablani
- Department of Ophthalmology, UPMC Eye Center, University of Pittsburgh, Pittsburgh, PA, USA
| | - Anat Loewenstein
- Division of Ophthalmology, Tel Aviv Medical, Tel Aviv University, Tel Aviv, Israel
| | - Paolo Lanzetta
- Department of Medicine - Ophthalmology, University of Udine, Piazzale Santa Maria Della Misericordia, 33100, Udine, Italy.
- Istituto Europeo Di Microchirurgia Oculare - IEMO, Udine, Italy.
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Veritti D, Sarao V, Di Bin F, Lanzetta P. Pharmacokinetic and Pharmacodynamic Rationale for Extending VEGF Inhibition Increasing Intravitreal Aflibercept Dose. Pharmaceutics 2023; 15:pharmaceutics15051416. [PMID: 37242658 DOI: 10.3390/pharmaceutics15051416] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/16/2023] [Revised: 04/01/2023] [Accepted: 04/27/2023] [Indexed: 05/28/2023] Open
Abstract
BACKGROUND The effects of various dosages and treatment regimens on intravitreal aflibercept concentrations and the proportion of free vascular endothelial growth factor (VEGF) to total VEGF were evaluated using a drug and disease assessment model. The 8 mg dosage received specific attention. METHODS A time-dependent mathematical model was developed and implemented using Wolfram Mathematica software v12.0. This model was used to obtain drug concentrations after multiple doses of different aflibercept dosages (0.5 mg, 2 mg, and 8 mg) and to estimate the time-dependent intravitreal free VEGF percentage levels. A series of fixed treatment regimens were modeled and evaluated as potential clinical applications. RESULTS The simulation results indicate that 8 mg aflibercept administered at a range of treatment intervals (between 12 and 15 weeks) would allow for the proportion of free VEGF to remain below threshold levels. Our analysis indicates that these protocols maintain the ratio of free VEGF below 0.001%. CONCLUSIONS Fixed q12-q15 (every 12-15 weeks) 8 mg aflibercept regimens can produce adequate intravitreal VEGF inhibition.
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Affiliation(s)
- Daniele Veritti
- Department of Medicine-Ophthalmology, University of Udine, 33100 Udine, Italy
| | - Valentina Sarao
- Department of Medicine-Ophthalmology, University of Udine, 33100 Udine, Italy
- Istituto Europeo di Microchirurgia Oculare (IEMO), 33100 Udine, Italy
| | - Francesco Di Bin
- Department of Medicine-Ophthalmology, University of Udine, 33100 Udine, Italy
| | - Paolo Lanzetta
- Department of Medicine-Ophthalmology, University of Udine, 33100 Udine, Italy
- Istituto Europeo di Microchirurgia Oculare (IEMO), 33100 Udine, Italy
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Yang LL, Zhou F, Xu Q, Ye T, Xiong H. Clinical Effect of Tongmai Fuming Decoction on Neovascular Ophthalmopathy. EVIDENCE-BASED COMPLEMENTARY AND ALTERNATIVE MEDICINE : ECAM 2022; 2022:7327609. [PMID: 36034947 PMCID: PMC9410785 DOI: 10.1155/2022/7327609] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 06/10/2022] [Revised: 07/05/2022] [Accepted: 07/20/2022] [Indexed: 11/17/2022]
Abstract
Background The incidence of neovascular eye disease is increasing year by year, seriously threatening human vision health and becoming an urgent public health problem. Tongmai fuming decoction as an experienced prescription can treat ischemic eye disease. Objective To investigate the therapeutic effect of Tongmai fuming decoction combined with anti-VEGF therapy on neovascular ophthalmopathy. Methods 52 patients (62 eyes) with neovascular ophthalmopathy who met the inclusion criteria from January 2018 to July 2020 were randomly divided into the control and observation groups. The control group was given an intravitreal injection of antivascular endothelial growth factor (VEGF) drugs once a day combined with on-demand treatment. The observation group was treated with traditional Chinese medicine Tongmai fuming decoction in addition to the treatment of anti-VEGF drugs. The best-corrected visual acuity (BCVA) was examined before and after treatment, and optical coherence tomography angiography (OCTA) was used to examine the mean retinal thickness and neovascularization in the macular area. Patients were followed for one year and the number of anti-VEGF injections was recorded. Results After treatment, the average thickness of BCVA and macular retina in the two groups significantly improved. The BCVA of the control group was 0.59 ± 0.39 3 months after treatment, and that of the experimental group was 0.42 ± 0.25 3 months after treatment. The average thickness of the macular retina in the control group was 304.8 ± 79.7 3 months after treatment, and that in the experimental group was 267.7 ± 64.6 3 months after treatment; The average number of injections of anti-VEGF therapy in the control group was 2.32 ± 1.15 times, and that in the experimental group was 1.74 ± 0.76 times. There was a significant difference between the two groups. Conclusion Tongmai fuming decoction and anti-VEGF therapy have a synergistic effect in the treatment of neovascular ophthalmopathy, which can reduce the treatment times of anti-VEGF drugs.
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Affiliation(s)
- Lei lei Yang
- Wuhan Fourth Hospital, Puai Hospital, Tongji Medical College, Huazhong University of Science and Technology Ophthalmology, Wuhan 430030, China
| | - Feng Zhou
- Wuhan Fourth Hospital, Puai Hospital, Tongji Medical College, Huazhong University of Science and Technology Ophthalmology, Wuhan 430030, China
| | - Qi Xu
- Wuhan Fourth Hospital, Puai Hospital, Tongji Medical College, Huazhong University of Science and Technology, Ultrasound Diagnosis Department, Wuhan 430030, China
| | - Ting Ye
- Wuhan Fourth Hospital, Puai Hospital, Tongji Medical College, Huazhong University of Science and Technology Ophthalmology, Wuhan 430030, China
| | - Hong Xiong
- Wuhan Fourth Hospital, Puai Hospital, Tongji Medical College, Huazhong University of Science and Technology Ophthalmology, Wuhan 430030, China
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Tanaka K, Koizumi H, Tamashiro T, Itagaki K, Nakayama M, Maruko I, Wakugawa S, Terao N, Onoe H, Wakatsuki Y, Kasai A, Ogasawara M, Shintake H, Sugano Y, Yamamoto A, Kataoka K, Hasegawa T, Izumi T, Kawai M, Maruko R, Sekiryu T, Okada AA, Iida T, Mori R. Short-term results for brolucizumab in treatment-naïve neovascular age-related macular degeneration: a Japanese multicenter study. Jpn J Ophthalmol 2022; 66:379-385. [PMID: 35595951 DOI: 10.1007/s10384-022-00922-3] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/21/2021] [Accepted: 03/25/2022] [Indexed: 10/18/2022]
Abstract
PURPOSE To investigate short-term treatment outcomes of intravitreal brolucizumab (IVBr) for treatment-naïve neovascular age-related macular degeneration (AMD) in a Japanese multicenter study. STUDY DESIGN Retrospective case control study METHODS: The subjects were 58 eyes of 57 patients with neovascular AMD (43 men and 14 women, mean age 74.6 years) of whom 43 eyes of 42 patients completed initial loading of 3 monthly IVBr injections and were followed for more than 3 months. Best-corrected visual acuity (BCVA) changes, anatomical outcomes, and complications were investigated. RESULTS Of the 43 eyes that completed loading doses, the AMD subtype was type 1 and type 2 macular neovascularization (MNV) in 51%, polypoidal choroidal vasculopathy (PCV) in 42%, and type 3 MNV in 7%. At 3 months after initiating treatment, BCVA significantly improved (P = 0.002) and central retinal thickness significantly decreased (P < 0.0001). At 3 months, complete retinal and subretinal fluid resolution was achieved in 91% of all eyes and complete regression of polypoidal lesions was achieved in 82% of PCV eyes. Iritis occurred in 8 eyes of 8 patients (14%), but resolved using topical or subtenon corticosteroid injection without visual loss in all cases. CONCLUSIONS IVBr for treatment-naïve neovascular AMD was effective in the short-term, achieving significantly improved BCVA, good retinal fluid resolution, and a high rate of polypoidal lesion regression. However, iritis was noted in 14% of patients which may limit use of this drug.
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Affiliation(s)
- Koji Tanaka
- Department of Ophthalmology, Nihon University School of Medicine, Tokyo, Japan.
| | - Hideki Koizumi
- Department of Ophthalmology, Graduate School of Medicine, University of the Ryukyus, Okinawa, Japan
| | - Tamaki Tamashiro
- Department of Ophthalmology, Graduate School of Medicine, University of the Ryukyus, Okinawa, Japan
| | - Kanako Itagaki
- Department of Ophthalmology, Fukushima Medical University, Fukushima, Japan
| | - Makiko Nakayama
- Department of Ophthalmology, Kyorin University School of Medicine, Tokyo, Japan
| | - Ichiro Maruko
- Department of Ophthalmology, Tokyo Women's Medical University, Tokyo, Japan
| | - Sorako Wakugawa
- Department of Ophthalmology, Graduate School of Medicine, University of the Ryukyus, Okinawa, Japan
| | - Nobuhiro Terao
- Department of Ophthalmology, Graduate School of Medicine, University of the Ryukyus, Okinawa, Japan
| | - Hajime Onoe
- Department of Ophthalmology, Nihon University School of Medicine, Tokyo, Japan
| | - Yu Wakatsuki
- Department of Ophthalmology, Nihon University School of Medicine, Tokyo, Japan
| | - Akihito Kasai
- Department of Ophthalmology, Fukushima Medical University, Fukushima, Japan
| | - Masashi Ogasawara
- Department of Ophthalmology, Fukushima Medical University, Fukushima, Japan
| | - Hiroaki Shintake
- Department of Ophthalmology, Fukushima Medical University, Fukushima, Japan
| | - Yukinori Sugano
- Department of Ophthalmology, Fukushima Medical University, Fukushima, Japan
| | - Akiko Yamamoto
- Department of Ophthalmology, Kyorin University School of Medicine, Tokyo, Japan
| | - Keiko Kataoka
- Department of Ophthalmology, Kyorin University School of Medicine, Tokyo, Japan
| | - Taiji Hasegawa
- Department of Ophthalmology, Tokyo Women's Medical University, Tokyo, Japan
| | - Takahiko Izumi
- Department of Ophthalmology, Tokyo Women's Medical University, Tokyo, Japan
| | - Moeko Kawai
- Department of Ophthalmology, Tokyo Women's Medical University, Tokyo, Japan
| | - Ruka Maruko
- Department of Ophthalmology, Tokyo Women's Medical University, Tokyo, Japan
| | - Tetsuju Sekiryu
- Department of Ophthalmology, Fukushima Medical University, Fukushima, Japan
| | - Annabelle A Okada
- Department of Ophthalmology, Kyorin University School of Medicine, Tokyo, Japan
| | - Tomohiro Iida
- Department of Ophthalmology, Tokyo Women's Medical University, Tokyo, Japan
| | - Ryusaburo Mori
- Department of Ophthalmology, Nihon University School of Medicine, Tokyo, Japan
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Douglas VP, Garg I, Douglas KAA, Miller JB. Subthreshold Exudative Choroidal Neovascularization (CNV): Presentation of This Uncommon Subtype and Other CNVs in Age-Related Macular Degeneration (AMD). J Clin Med 2022; 11:jcm11082083. [PMID: 35456174 PMCID: PMC9031480 DOI: 10.3390/jcm11082083] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/27/2022] [Revised: 03/21/2022] [Accepted: 03/24/2022] [Indexed: 11/16/2022] Open
Abstract
Age-related macular degeneration (AMD) is a leading cause of irreversible vision loss in people over the age of 50 worldwide. Exudative or neovascular AMD is a more severe subset of AMD which is characterized by the presence of choroidal neovascularization (CNV). Recent advancements in multimodal ophthalmic imaging, including optical coherence tomography (OCT) and OCT-angiography (OCT-A), have facilitated the detection and characterization of previously undetectable neovascular lesions and have enabled a more refined classification of CNV in exudative as well as nonexudative AMD patients. Subthreshold exudative CNV is a novel subtype of exudative AMD that typically presents asymptomatically with good visual acuity and is characterized by stable persistent or intermittent subretinal fluid (SRF). This review aims to provide an overview of the clinical as well as multimodal imaging characteristics of CNV in AMD, including this new clinical phenotype, and propose effective approaches for management.
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Affiliation(s)
- Vivian Paraskevi Douglas
- Harvard Retinal Imaging Lab, Massachusetts Eye and Ear, Harvard Medical School, 243 Charles St., Boston, MA 02114, USA; (V.P.D.); (I.G.); (K.A.A.D.)
| | - Itika Garg
- Harvard Retinal Imaging Lab, Massachusetts Eye and Ear, Harvard Medical School, 243 Charles St., Boston, MA 02114, USA; (V.P.D.); (I.G.); (K.A.A.D.)
- Retina Service, Massachusetts Eye and Ear, Department of Ophthalmology, Harvard Medical School, 243 Charles St., Boston, MA 02114, USA
| | - Konstantinos A. A. Douglas
- Harvard Retinal Imaging Lab, Massachusetts Eye and Ear, Harvard Medical School, 243 Charles St., Boston, MA 02114, USA; (V.P.D.); (I.G.); (K.A.A.D.)
| | - John B. Miller
- Harvard Retinal Imaging Lab, Massachusetts Eye and Ear, Harvard Medical School, 243 Charles St., Boston, MA 02114, USA; (V.P.D.); (I.G.); (K.A.A.D.)
- Retina Service, Massachusetts Eye and Ear, Department of Ophthalmology, Harvard Medical School, 243 Charles St., Boston, MA 02114, USA
- Correspondence: ; Tel.: +1-(617)-573-3750; Fax: +1-(617)-573-3698
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