PMID- 30834176 OWN - NLM STAT- PubMed-not-MEDLINE LR - 20220408 IS - 2164-2591 (Print) IS - 2164-2591 (Electronic) IS - 2164-2591 (Linking) VI - 8 IP - 2 DP - 2019 Mar TI - Cross-Sectional and Longitudinal Assessment of the Ellipsoid Zone in Childhood-Onset Stargardt Disease. PG - 1 LID - 10.1167/tvst.8.2.1 [doi] LID - 1 AB - PURPOSE: To evaluate the reliability of ellipsoid zone (EZ) loss width and area measurements from spectral-domain optical coherence tomography (SD-OCT) images and track disease progression in childhood-onset Stargardt disease (STGD1). METHODS: Children with molecularly confirmed STGD1 (n = 46, mean age 12.4 years) underwent SD-OCT for the measurement of the transverse (width) loss of the EZ and en face analysis to quantify the area of EZ loss. All scans were analyzed twice by two graders to evaluate reliability. The annual rate of EZ width and area loss were calculated. RESULTS: The intra- and intergrader reliability of transverse EZ loss and area of EZ loss measurements at baseline for both graders was 0.99. The mean annual rate of transverse EZ loss (+/-standard deviation) was 279.5 +/- 259.9 mum/y. The mean rate of area of EZ loss (+/-standard deviation) was 1.20 +/- 1.29 mm(2)/y. The percentage transverse EZ loss was 10.2 +/- 9.9%/y, which was significantly lower than the area of EZ loss at 19.4 +/- 16.3%/y. High degree of interocular symmetry was observed. CONCLUSIONS: This is a prospective study on the quantification of EZ loss in children with STGD1 and highlights the reliability of SD-OCT in measuring EZ loss. High intra- and intergrader reliability was observed, with good ability to detect changes over time. TRANSLATIONAL RELEVANCE: Measuring the area of EZ loss was more sensitive compared with transverse EZ width loss measurements and will be valuable for natural history studies and clinical trials requiring sensitive and reliable structural endpoints. FAU - Tanna, Preena AU - Tanna P AD - UCL Institute of Ophthalmology, University College London, London, UK. AD - Moorfields Eye Hospital, London, UK. FAU - Georgiou, Michalis AU - Georgiou M AD - UCL Institute of Ophthalmology, University College London, London, UK. AD - Moorfields Eye Hospital, London, UK. FAU - Strauss, Rupert W AU - Strauss RW AD - UCL Institute of Ophthalmology, University College London, London, UK. AD - Moorfields Eye Hospital, London, UK. AD - Departments of Ophthalmology, Johannes Kepler University and Medical University Graz, Austria. FAU - Ali, Naser AU - Ali N AD - UCL Institute of Ophthalmology, University College London, London, UK. AD - Moorfields Eye Hospital, London, UK. FAU - Kumaran, Neruban AU - Kumaran N AD - UCL Institute of Ophthalmology, University College London, London, UK. AD - Moorfields Eye Hospital, London, UK. FAU - Kalitzeos, Angelos AU - Kalitzeos A AD - UCL Institute of Ophthalmology, University College London, London, UK. AD - Moorfields Eye Hospital, London, UK. FAU - Fujinami, Kaoru AU - Fujinami K AD - UCL Institute of Ophthalmology, University College London, London, UK. AD - Moorfields Eye Hospital, London, UK. AD - Division of Vision Research, National Institute of Sensory Organs, National Hospital Organization, Tokyo Medical Center, Tokyo, Japan. AD - Department of Ophthalmology, Keio University School of Medicine, Tokyo, Japan. FAU - Michaelides, Michel AU - Michaelides M AD - UCL Institute of Ophthalmology, University College London, London, UK. AD - Moorfields Eye Hospital, London, UK. LA - eng GR - Wellcome Trust/United Kingdom PT - Journal Article DEP - 20190301 PL - United States TA - Transl Vis Sci Technol JT - Translational vision science & technology JID - 101595919 PMC - PMC6397016 OTO - NOTNLM OT - ABCA4 OT - EZ OT - OCT OT - STGD1 OT - Stargardt disease OT - clinical trials OT - ellipsoid zone OT - endpoints OT - retina EDAT- 2019/03/06 06:00 MHDA- 2019/03/06 06:01 PMCR- 2019/03/01 CRDT- 2019/03/06 06:00 PHST- 2018/10/18 00:00 [received] PHST- 2018/12/12 00:00 [accepted] PHST- 2019/03/06 06:00 [entrez] PHST- 2019/03/06 06:00 [pubmed] PHST- 2019/03/06 06:01 [medline] PHST- 2019/03/01 00:00 [pmc-release] AID - TVST-18-1188 [pii] AID - 10.1167/tvst.8.2.1 [doi] PST - epublish SO - Transl Vis Sci Technol. 2019 Mar 1;8(2):1. doi: 10.1167/tvst.8.2.1. eCollection 2019 Mar.