Laryssa A Huryn1, Amy Turriff2, Laura A Harney3, Ann Garrity Carr3, Patricia Chevez-Barrios4, Dan S Gombos5, Radha Ram6, Robert B Hufnagel2, D Ashley Hill7, Wadih M Zein2, Kris Ann P Schultz8, Rachel Bishop2, Douglas R Stewart9. 1. National Eye Institute, National Institutes of Health, Bethesda, Maryland. Electronic address: laryssa.huryn@nih.gov. 2. National Eye Institute, National Institutes of Health, Bethesda, Maryland. 3. Health Studies, Westat, Inc., Rockville, Maryland. 4. Departments of Pathology and Genomic Medicine and of Ophthalmology, Houston Methodist Hospital, Houston, Texas; Departments of Pathology and Laboratory Medicine and Ophthalmology, Weill Cornell Medical College, New York, New York; Department of Ophthalmology, Baylor College of Medicine, Houston, Texas; Section of Ophthalmology, Department of Head and Neck Surgery, The University of Texas MD, Anderson Cancer Center, Houston, Texas. 5. Department of Ophthalmology, Baylor College of Medicine, Houston, Texas; Section of Ophthalmology, Department of Head and Neck Surgery, The University of Texas MD, Anderson Cancer Center, Houston, Texas; Department of Ophthalmology, Texas Children's Hospital, Houston, Texas; The Methodist Research Institute, Houston, Texas. 6. Texan Eye, Austin, Texas. 7. Division of Pathology and Center for Genetic Medicine Research, Children's National Health System, Washington, D.C; Department of Integrative Systems Biology, George Washington University School of Medicine and Health Sciences, Washington, D.C. 8. Cancer and Blood Disorders, Children's Minnesota, Minneapolis, Minnesota; International Pleuropulmonary Blastoma Registry, Minneapolis, Minnesota; International Ovarian and Testicular Stromal Tumor Registry, Minneapolis, Minnesota. 9. Clinical Genetics Branch, Division of Cancer Epidemiology and Genetics, National Cancer Institute, Rockville, Maryland.
Abstract
PURPOSE: To characterize the ocular phenotype of DICER1 syndrome. DESIGN: Prospective, single-center, case-control study. PARTICIPANTS: One hundred three patients with an identified germline pathogenic DICER1 variant (DICER1 carriers) and 69 family control participants underwent clinical and ophthalmic examination at the National Institutes of Health between 2011 and 2016. METHODS: All participants were evaluated with a comprehensive ophthalmic examination, including best-corrected visual acuity, slit-lamp biomicroscopy, and a dilated fundus examination. A subset of patients returned for a more detailed evaluation including spectral-domain OCT, color fundus photography, fundus autofluorescence imaging, visual field testing, full-field electroretinography, and genetic testing for inherited retinal degenerative diseases. MAIN OUTCOME MEASURES: Visual acuity and examination findings. RESULTS: Most DICER1 carriers (97%) maintained a visual acuity of 20/40 or better in both eyes. Twenty-three DICER1 carriers (22%) showed ocular abnormalities compared with 4 family controls (6%; P = 0.005). These abnormalities included retinal pigment abnormalities (n = 6 [5.8%]), increased cup-to-disc ratio (n = 5 [4.9%]), optic nerve abnormalities (n = 2 [1.9%]), epiretinal membrane (n = 2 [1.9%]), and drusen (n = 2 [1.9%]). Overall, we observed a significant difference (P = 0.03) in the rate of retinal abnormalities in DICER1 carriers (n = 11 [11%]) versus controls (n = 1 [1.5%]). One patient demonstrated an unexpected diagnosis of retinitis pigmentosa with a novel variant of unknown significance in PRPF31, and 1 showed optic nerve elevation in the setting of increased intracranial pressure (ICP) of unclear cause. Three patients (3%) demonstrated DICER1-related ciliary body medulloepithelioma (CBME), 2 of which were identified during routine examination, a higher rate than that reported previously. CONCLUSIONS: Ophthalmologists should be aware of the ophthalmic manifestations of DICER1 syndrome, and individuals and families should be counseled on the potential signs and symptoms. We recommend that children with a germline pathogenic variant in DICER1, especially those younger than 10 years, undergo annual dilated ophthalmic examination, looking for evidence of CBME, signs of increased ICP, and perhaps changes in the retinal pigment epithelium. Published by Elsevier Inc.
PURPOSE: To characterize the ocular phenotype of DICER1 syndrome. DESIGN: Prospective, single-center, case-control study. PARTICIPANTS: One hundred three patients with an identified germline pathogenic DICER1 variant (DICER1 carriers) and 69 family control participants underwent clinical and ophthalmic examination at the National Institutes of Health between 2011 and 2016. METHODS: All participants were evaluated with a comprehensive ophthalmic examination, including best-corrected visual acuity, slit-lamp biomicroscopy, and a dilated fundus examination. A subset of patients returned for a more detailed evaluation including spectral-domain OCT, color fundus photography, fundus autofluorescence imaging, visual field testing, full-field electroretinography, and genetic testing for inherited retinal degenerative diseases. MAIN OUTCOME MEASURES: Visual acuity and examination findings. RESULTS: Most DICER1 carriers (97%) maintained a visual acuity of 20/40 or better in both eyes. Twenty-three DICER1 carriers (22%) showed ocular abnormalities compared with 4 family controls (6%; P = 0.005). These abnormalities included retinal pigment abnormalities (n = 6 [5.8%]), increased cup-to-disc ratio (n = 5 [4.9%]), optic nerve abnormalities (n = 2 [1.9%]), epiretinal membrane (n = 2 [1.9%]), and drusen (n = 2 [1.9%]). Overall, we observed a significant difference (P = 0.03) in the rate of retinal abnormalities in DICER1 carriers (n = 11 [11%]) versus controls (n = 1 [1.5%]). One patient demonstrated an unexpected diagnosis of retinitis pigmentosa with a novel variant of unknown significance in PRPF31, and 1 showed optic nerve elevation in the setting of increased intracranial pressure (ICP) of unclear cause. Three patients (3%) demonstrated DICER1-related ciliary body medulloepithelioma (CBME), 2 of which were identified during routine examination, a higher rate than that reported previously. CONCLUSIONS: Ophthalmologists should be aware of the ophthalmic manifestations of DICER1 syndrome, and individuals and families should be counseled on the potential signs and symptoms. We recommend that children with a germline pathogenic variant in DICER1, especially those younger than 10 years, undergo annual dilated ophthalmic examination, looking for evidence of CBME, signs of increased ICP, and perhaps changes in the retinal pigment epithelium. Published by Elsevier Inc.
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