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Neurology Genetics
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April 2019; 5 (2) ArticleOpen Access

Autosomal dominant optic atrophy and cataract “plus” phenotype including axonal neuropathy

Alejandro Horga, Enrico Bugiardini, Andreea Manole, Fion Bremner, Zane Jaunmuktane, Lois Dankwa, Adriana P. Rebelo, Catherine E. Woodward, Iain P. Hargreaves, Andrea Cortese, Alan M. Pittman, Sebastian Brandner, James M. Polke, Robert D.S. Pitceathly, Stephan Züchner, Michael G. Hanna, Steven S. Scherer, Henry Houlden, Mary M. Reilly
First published April 1, 2019, DOI: https://doi.org/10.1212/NXG.0000000000000322
Alejandro Horga
From the Department of Neuromuscular Diseases (A.H., A.C., M.G.H., M.M.R.), UCL Queen Square Institute of Neurology and the National Hospital for Neurology and Neurosurgery, University College London Hospitals; Department of Molecular Neuroscience (A.M.P., H.H.), UCL Queen Square Institute of Neurology; Department of Neuro-ophthalmology (F.B.F.R.C.O.), the National Hospital for Neurology and Neurosurgery, University College London Hospitals; Division of Neuropathology (Z.J., S.B.), the National Hospital for Neurology and Neurosurgery, University College London Hospitals; Department of Clinical and Movement Neurosciences (Z.J.), UCL Queen Square Institute of Neurology, London, United Kingdom; Department of Neurology (L.D., S.S.S.), Perelman School of Medicine, University of Pennsylvania, Philadelphia; Department of Human Genetics and Hussman Institute for Human Genomics (A.P.R., S.Z.), University of Miami, FL; Department of Neurogenetics (C.E.W., J.M.P.), the National Hospital for Neurology and Neurosurgery, University College London Hospitals; Neurometabolic Unit (I.P.H.), the National Hospital for Neurology and Neurosurgery, University College London Hospitals; and Department of Neurodegenerative Disease (S.B.), UCL Queen Square Institute of Neurology, London, United Kingdom.
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Enrico Bugiardini
From the Department of Neuromuscular Diseases (A.H., A.C., M.G.H., M.M.R.), UCL Queen Square Institute of Neurology and the National Hospital for Neurology and Neurosurgery, University College London Hospitals; Department of Molecular Neuroscience (A.M.P., H.H.), UCL Queen Square Institute of Neurology; Department of Neuro-ophthalmology (F.B.F.R.C.O.), the National Hospital for Neurology and Neurosurgery, University College London Hospitals; Division of Neuropathology (Z.J., S.B.), the National Hospital for Neurology and Neurosurgery, University College London Hospitals; Department of Clinical and Movement Neurosciences (Z.J.), UCL Queen Square Institute of Neurology, London, United Kingdom; Department of Neurology (L.D., S.S.S.), Perelman School of Medicine, University of Pennsylvania, Philadelphia; Department of Human Genetics and Hussman Institute for Human Genomics (A.P.R., S.Z.), University of Miami, FL; Department of Neurogenetics (C.E.W., J.M.P.), the National Hospital for Neurology and Neurosurgery, University College London Hospitals; Neurometabolic Unit (I.P.H.), the National Hospital for Neurology and Neurosurgery, University College London Hospitals; and Department of Neurodegenerative Disease (S.B.), UCL Queen Square Institute of Neurology, London, United Kingdom.
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Andreea Manole
From the Department of Neuromuscular Diseases (A.H., A.C., M.G.H., M.M.R.), UCL Queen Square Institute of Neurology and the National Hospital for Neurology and Neurosurgery, University College London Hospitals; Department of Molecular Neuroscience (A.M.P., H.H.), UCL Queen Square Institute of Neurology; Department of Neuro-ophthalmology (F.B.F.R.C.O.), the National Hospital for Neurology and Neurosurgery, University College London Hospitals; Division of Neuropathology (Z.J., S.B.), the National Hospital for Neurology and Neurosurgery, University College London Hospitals; Department of Clinical and Movement Neurosciences (Z.J.), UCL Queen Square Institute of Neurology, London, United Kingdom; Department of Neurology (L.D., S.S.S.), Perelman School of Medicine, University of Pennsylvania, Philadelphia; Department of Human Genetics and Hussman Institute for Human Genomics (A.P.R., S.Z.), University of Miami, FL; Department of Neurogenetics (C.E.W., J.M.P.), the National Hospital for Neurology and Neurosurgery, University College London Hospitals; Neurometabolic Unit (I.P.H.), the National Hospital for Neurology and Neurosurgery, University College London Hospitals; and Department of Neurodegenerative Disease (S.B.), UCL Queen Square Institute of Neurology, London, United Kingdom.
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Fion Bremner
From the Department of Neuromuscular Diseases (A.H., A.C., M.G.H., M.M.R.), UCL Queen Square Institute of Neurology and the National Hospital for Neurology and Neurosurgery, University College London Hospitals; Department of Molecular Neuroscience (A.M.P., H.H.), UCL Queen Square Institute of Neurology; Department of Neuro-ophthalmology (F.B.F.R.C.O.), the National Hospital for Neurology and Neurosurgery, University College London Hospitals; Division of Neuropathology (Z.J., S.B.), the National Hospital for Neurology and Neurosurgery, University College London Hospitals; Department of Clinical and Movement Neurosciences (Z.J.), UCL Queen Square Institute of Neurology, London, United Kingdom; Department of Neurology (L.D., S.S.S.), Perelman School of Medicine, University of Pennsylvania, Philadelphia; Department of Human Genetics and Hussman Institute for Human Genomics (A.P.R., S.Z.), University of Miami, FL; Department of Neurogenetics (C.E.W., J.M.P.), the National Hospital for Neurology and Neurosurgery, University College London Hospitals; Neurometabolic Unit (I.P.H.), the National Hospital for Neurology and Neurosurgery, University College London Hospitals; and Department of Neurodegenerative Disease (S.B.), UCL Queen Square Institute of Neurology, London, United Kingdom.
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Zane Jaunmuktane
From the Department of Neuromuscular Diseases (A.H., A.C., M.G.H., M.M.R.), UCL Queen Square Institute of Neurology and the National Hospital for Neurology and Neurosurgery, University College London Hospitals; Department of Molecular Neuroscience (A.M.P., H.H.), UCL Queen Square Institute of Neurology; Department of Neuro-ophthalmology (F.B.F.R.C.O.), the National Hospital for Neurology and Neurosurgery, University College London Hospitals; Division of Neuropathology (Z.J., S.B.), the National Hospital for Neurology and Neurosurgery, University College London Hospitals; Department of Clinical and Movement Neurosciences (Z.J.), UCL Queen Square Institute of Neurology, London, United Kingdom; Department of Neurology (L.D., S.S.S.), Perelman School of Medicine, University of Pennsylvania, Philadelphia; Department of Human Genetics and Hussman Institute for Human Genomics (A.P.R., S.Z.), University of Miami, FL; Department of Neurogenetics (C.E.W., J.M.P.), the National Hospital for Neurology and Neurosurgery, University College London Hospitals; Neurometabolic Unit (I.P.H.), the National Hospital for Neurology and Neurosurgery, University College London Hospitals; and Department of Neurodegenerative Disease (S.B.), UCL Queen Square Institute of Neurology, London, United Kingdom.
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Lois Dankwa
From the Department of Neuromuscular Diseases (A.H., A.C., M.G.H., M.M.R.), UCL Queen Square Institute of Neurology and the National Hospital for Neurology and Neurosurgery, University College London Hospitals; Department of Molecular Neuroscience (A.M.P., H.H.), UCL Queen Square Institute of Neurology; Department of Neuro-ophthalmology (F.B.F.R.C.O.), the National Hospital for Neurology and Neurosurgery, University College London Hospitals; Division of Neuropathology (Z.J., S.B.), the National Hospital for Neurology and Neurosurgery, University College London Hospitals; Department of Clinical and Movement Neurosciences (Z.J.), UCL Queen Square Institute of Neurology, London, United Kingdom; Department of Neurology (L.D., S.S.S.), Perelman School of Medicine, University of Pennsylvania, Philadelphia; Department of Human Genetics and Hussman Institute for Human Genomics (A.P.R., S.Z.), University of Miami, FL; Department of Neurogenetics (C.E.W., J.M.P.), the National Hospital for Neurology and Neurosurgery, University College London Hospitals; Neurometabolic Unit (I.P.H.), the National Hospital for Neurology and Neurosurgery, University College London Hospitals; and Department of Neurodegenerative Disease (S.B.), UCL Queen Square Institute of Neurology, London, United Kingdom.
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Adriana P. Rebelo
From the Department of Neuromuscular Diseases (A.H., A.C., M.G.H., M.M.R.), UCL Queen Square Institute of Neurology and the National Hospital for Neurology and Neurosurgery, University College London Hospitals; Department of Molecular Neuroscience (A.M.P., H.H.), UCL Queen Square Institute of Neurology; Department of Neuro-ophthalmology (F.B.F.R.C.O.), the National Hospital for Neurology and Neurosurgery, University College London Hospitals; Division of Neuropathology (Z.J., S.B.), the National Hospital for Neurology and Neurosurgery, University College London Hospitals; Department of Clinical and Movement Neurosciences (Z.J.), UCL Queen Square Institute of Neurology, London, United Kingdom; Department of Neurology (L.D., S.S.S.), Perelman School of Medicine, University of Pennsylvania, Philadelphia; Department of Human Genetics and Hussman Institute for Human Genomics (A.P.R., S.Z.), University of Miami, FL; Department of Neurogenetics (C.E.W., J.M.P.), the National Hospital for Neurology and Neurosurgery, University College London Hospitals; Neurometabolic Unit (I.P.H.), the National Hospital for Neurology and Neurosurgery, University College London Hospitals; and Department of Neurodegenerative Disease (S.B.), UCL Queen Square Institute of Neurology, London, United Kingdom.
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Catherine E. Woodward
From the Department of Neuromuscular Diseases (A.H., A.C., M.G.H., M.M.R.), UCL Queen Square Institute of Neurology and the National Hospital for Neurology and Neurosurgery, University College London Hospitals; Department of Molecular Neuroscience (A.M.P., H.H.), UCL Queen Square Institute of Neurology; Department of Neuro-ophthalmology (F.B.F.R.C.O.), the National Hospital for Neurology and Neurosurgery, University College London Hospitals; Division of Neuropathology (Z.J., S.B.), the National Hospital for Neurology and Neurosurgery, University College London Hospitals; Department of Clinical and Movement Neurosciences (Z.J.), UCL Queen Square Institute of Neurology, London, United Kingdom; Department of Neurology (L.D., S.S.S.), Perelman School of Medicine, University of Pennsylvania, Philadelphia; Department of Human Genetics and Hussman Institute for Human Genomics (A.P.R., S.Z.), University of Miami, FL; Department of Neurogenetics (C.E.W., J.M.P.), the National Hospital for Neurology and Neurosurgery, University College London Hospitals; Neurometabolic Unit (I.P.H.), the National Hospital for Neurology and Neurosurgery, University College London Hospitals; and Department of Neurodegenerative Disease (S.B.), UCL Queen Square Institute of Neurology, London, United Kingdom.
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Iain P. Hargreaves
From the Department of Neuromuscular Diseases (A.H., A.C., M.G.H., M.M.R.), UCL Queen Square Institute of Neurology and the National Hospital for Neurology and Neurosurgery, University College London Hospitals; Department of Molecular Neuroscience (A.M.P., H.H.), UCL Queen Square Institute of Neurology; Department of Neuro-ophthalmology (F.B.F.R.C.O.), the National Hospital for Neurology and Neurosurgery, University College London Hospitals; Division of Neuropathology (Z.J., S.B.), the National Hospital for Neurology and Neurosurgery, University College London Hospitals; Department of Clinical and Movement Neurosciences (Z.J.), UCL Queen Square Institute of Neurology, London, United Kingdom; Department of Neurology (L.D., S.S.S.), Perelman School of Medicine, University of Pennsylvania, Philadelphia; Department of Human Genetics and Hussman Institute for Human Genomics (A.P.R., S.Z.), University of Miami, FL; Department of Neurogenetics (C.E.W., J.M.P.), the National Hospital for Neurology and Neurosurgery, University College London Hospitals; Neurometabolic Unit (I.P.H.), the National Hospital for Neurology and Neurosurgery, University College London Hospitals; and Department of Neurodegenerative Disease (S.B.), UCL Queen Square Institute of Neurology, London, United Kingdom.
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Andrea Cortese
From the Department of Neuromuscular Diseases (A.H., A.C., M.G.H., M.M.R.), UCL Queen Square Institute of Neurology and the National Hospital for Neurology and Neurosurgery, University College London Hospitals; Department of Molecular Neuroscience (A.M.P., H.H.), UCL Queen Square Institute of Neurology; Department of Neuro-ophthalmology (F.B.F.R.C.O.), the National Hospital for Neurology and Neurosurgery, University College London Hospitals; Division of Neuropathology (Z.J., S.B.), the National Hospital for Neurology and Neurosurgery, University College London Hospitals; Department of Clinical and Movement Neurosciences (Z.J.), UCL Queen Square Institute of Neurology, London, United Kingdom; Department of Neurology (L.D., S.S.S.), Perelman School of Medicine, University of Pennsylvania, Philadelphia; Department of Human Genetics and Hussman Institute for Human Genomics (A.P.R., S.Z.), University of Miami, FL; Department of Neurogenetics (C.E.W., J.M.P.), the National Hospital for Neurology and Neurosurgery, University College London Hospitals; Neurometabolic Unit (I.P.H.), the National Hospital for Neurology and Neurosurgery, University College London Hospitals; and Department of Neurodegenerative Disease (S.B.), UCL Queen Square Institute of Neurology, London, United Kingdom.
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Alan M. Pittman
From the Department of Neuromuscular Diseases (A.H., A.C., M.G.H., M.M.R.), UCL Queen Square Institute of Neurology and the National Hospital for Neurology and Neurosurgery, University College London Hospitals; Department of Molecular Neuroscience (A.M.P., H.H.), UCL Queen Square Institute of Neurology; Department of Neuro-ophthalmology (F.B.F.R.C.O.), the National Hospital for Neurology and Neurosurgery, University College London Hospitals; Division of Neuropathology (Z.J., S.B.), the National Hospital for Neurology and Neurosurgery, University College London Hospitals; Department of Clinical and Movement Neurosciences (Z.J.), UCL Queen Square Institute of Neurology, London, United Kingdom; Department of Neurology (L.D., S.S.S.), Perelman School of Medicine, University of Pennsylvania, Philadelphia; Department of Human Genetics and Hussman Institute for Human Genomics (A.P.R., S.Z.), University of Miami, FL; Department of Neurogenetics (C.E.W., J.M.P.), the National Hospital for Neurology and Neurosurgery, University College London Hospitals; Neurometabolic Unit (I.P.H.), the National Hospital for Neurology and Neurosurgery, University College London Hospitals; and Department of Neurodegenerative Disease (S.B.), UCL Queen Square Institute of Neurology, London, United Kingdom.
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Sebastian Brandner
From the Department of Neuromuscular Diseases (A.H., A.C., M.G.H., M.M.R.), UCL Queen Square Institute of Neurology and the National Hospital for Neurology and Neurosurgery, University College London Hospitals; Department of Molecular Neuroscience (A.M.P., H.H.), UCL Queen Square Institute of Neurology; Department of Neuro-ophthalmology (F.B.F.R.C.O.), the National Hospital for Neurology and Neurosurgery, University College London Hospitals; Division of Neuropathology (Z.J., S.B.), the National Hospital for Neurology and Neurosurgery, University College London Hospitals; Department of Clinical and Movement Neurosciences (Z.J.), UCL Queen Square Institute of Neurology, London, United Kingdom; Department of Neurology (L.D., S.S.S.), Perelman School of Medicine, University of Pennsylvania, Philadelphia; Department of Human Genetics and Hussman Institute for Human Genomics (A.P.R., S.Z.), University of Miami, FL; Department of Neurogenetics (C.E.W., J.M.P.), the National Hospital for Neurology and Neurosurgery, University College London Hospitals; Neurometabolic Unit (I.P.H.), the National Hospital for Neurology and Neurosurgery, University College London Hospitals; and Department of Neurodegenerative Disease (S.B.), UCL Queen Square Institute of Neurology, London, United Kingdom.
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James M. Polke
From the Department of Neuromuscular Diseases (A.H., A.C., M.G.H., M.M.R.), UCL Queen Square Institute of Neurology and the National Hospital for Neurology and Neurosurgery, University College London Hospitals; Department of Molecular Neuroscience (A.M.P., H.H.), UCL Queen Square Institute of Neurology; Department of Neuro-ophthalmology (F.B.F.R.C.O.), the National Hospital for Neurology and Neurosurgery, University College London Hospitals; Division of Neuropathology (Z.J., S.B.), the National Hospital for Neurology and Neurosurgery, University College London Hospitals; Department of Clinical and Movement Neurosciences (Z.J.), UCL Queen Square Institute of Neurology, London, United Kingdom; Department of Neurology (L.D., S.S.S.), Perelman School of Medicine, University of Pennsylvania, Philadelphia; Department of Human Genetics and Hussman Institute for Human Genomics (A.P.R., S.Z.), University of Miami, FL; Department of Neurogenetics (C.E.W., J.M.P.), the National Hospital for Neurology and Neurosurgery, University College London Hospitals; Neurometabolic Unit (I.P.H.), the National Hospital for Neurology and Neurosurgery, University College London Hospitals; and Department of Neurodegenerative Disease (S.B.), UCL Queen Square Institute of Neurology, London, United Kingdom.
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Robert D.S. Pitceathly
From the Department of Neuromuscular Diseases (A.H., A.C., M.G.H., M.M.R.), UCL Queen Square Institute of Neurology and the National Hospital for Neurology and Neurosurgery, University College London Hospitals; Department of Molecular Neuroscience (A.M.P., H.H.), UCL Queen Square Institute of Neurology; Department of Neuro-ophthalmology (F.B.F.R.C.O.), the National Hospital for Neurology and Neurosurgery, University College London Hospitals; Division of Neuropathology (Z.J., S.B.), the National Hospital for Neurology and Neurosurgery, University College London Hospitals; Department of Clinical and Movement Neurosciences (Z.J.), UCL Queen Square Institute of Neurology, London, United Kingdom; Department of Neurology (L.D., S.S.S.), Perelman School of Medicine, University of Pennsylvania, Philadelphia; Department of Human Genetics and Hussman Institute for Human Genomics (A.P.R., S.Z.), University of Miami, FL; Department of Neurogenetics (C.E.W., J.M.P.), the National Hospital for Neurology and Neurosurgery, University College London Hospitals; Neurometabolic Unit (I.P.H.), the National Hospital for Neurology and Neurosurgery, University College London Hospitals; and Department of Neurodegenerative Disease (S.B.), UCL Queen Square Institute of Neurology, London, United Kingdom.
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Stephan Züchner
From the Department of Neuromuscular Diseases (A.H., A.C., M.G.H., M.M.R.), UCL Queen Square Institute of Neurology and the National Hospital for Neurology and Neurosurgery, University College London Hospitals; Department of Molecular Neuroscience (A.M.P., H.H.), UCL Queen Square Institute of Neurology; Department of Neuro-ophthalmology (F.B.F.R.C.O.), the National Hospital for Neurology and Neurosurgery, University College London Hospitals; Division of Neuropathology (Z.J., S.B.), the National Hospital for Neurology and Neurosurgery, University College London Hospitals; Department of Clinical and Movement Neurosciences (Z.J.), UCL Queen Square Institute of Neurology, London, United Kingdom; Department of Neurology (L.D., S.S.S.), Perelman School of Medicine, University of Pennsylvania, Philadelphia; Department of Human Genetics and Hussman Institute for Human Genomics (A.P.R., S.Z.), University of Miami, FL; Department of Neurogenetics (C.E.W., J.M.P.), the National Hospital for Neurology and Neurosurgery, University College London Hospitals; Neurometabolic Unit (I.P.H.), the National Hospital for Neurology and Neurosurgery, University College London Hospitals; and Department of Neurodegenerative Disease (S.B.), UCL Queen Square Institute of Neurology, London, United Kingdom.
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Michael G. Hanna
From the Department of Neuromuscular Diseases (A.H., A.C., M.G.H., M.M.R.), UCL Queen Square Institute of Neurology and the National Hospital for Neurology and Neurosurgery, University College London Hospitals; Department of Molecular Neuroscience (A.M.P., H.H.), UCL Queen Square Institute of Neurology; Department of Neuro-ophthalmology (F.B.F.R.C.O.), the National Hospital for Neurology and Neurosurgery, University College London Hospitals; Division of Neuropathology (Z.J., S.B.), the National Hospital for Neurology and Neurosurgery, University College London Hospitals; Department of Clinical and Movement Neurosciences (Z.J.), UCL Queen Square Institute of Neurology, London, United Kingdom; Department of Neurology (L.D., S.S.S.), Perelman School of Medicine, University of Pennsylvania, Philadelphia; Department of Human Genetics and Hussman Institute for Human Genomics (A.P.R., S.Z.), University of Miami, FL; Department of Neurogenetics (C.E.W., J.M.P.), the National Hospital for Neurology and Neurosurgery, University College London Hospitals; Neurometabolic Unit (I.P.H.), the National Hospital for Neurology and Neurosurgery, University College London Hospitals; and Department of Neurodegenerative Disease (S.B.), UCL Queen Square Institute of Neurology, London, United Kingdom.
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Steven S. Scherer
From the Department of Neuromuscular Diseases (A.H., A.C., M.G.H., M.M.R.), UCL Queen Square Institute of Neurology and the National Hospital for Neurology and Neurosurgery, University College London Hospitals; Department of Molecular Neuroscience (A.M.P., H.H.), UCL Queen Square Institute of Neurology; Department of Neuro-ophthalmology (F.B.F.R.C.O.), the National Hospital for Neurology and Neurosurgery, University College London Hospitals; Division of Neuropathology (Z.J., S.B.), the National Hospital for Neurology and Neurosurgery, University College London Hospitals; Department of Clinical and Movement Neurosciences (Z.J.), UCL Queen Square Institute of Neurology, London, United Kingdom; Department of Neurology (L.D., S.S.S.), Perelman School of Medicine, University of Pennsylvania, Philadelphia; Department of Human Genetics and Hussman Institute for Human Genomics (A.P.R., S.Z.), University of Miami, FL; Department of Neurogenetics (C.E.W., J.M.P.), the National Hospital for Neurology and Neurosurgery, University College London Hospitals; Neurometabolic Unit (I.P.H.), the National Hospital for Neurology and Neurosurgery, University College London Hospitals; and Department of Neurodegenerative Disease (S.B.), UCL Queen Square Institute of Neurology, London, United Kingdom.
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Henry Houlden
From the Department of Neuromuscular Diseases (A.H., A.C., M.G.H., M.M.R.), UCL Queen Square Institute of Neurology and the National Hospital for Neurology and Neurosurgery, University College London Hospitals; Department of Molecular Neuroscience (A.M.P., H.H.), UCL Queen Square Institute of Neurology; Department of Neuro-ophthalmology (F.B.F.R.C.O.), the National Hospital for Neurology and Neurosurgery, University College London Hospitals; Division of Neuropathology (Z.J., S.B.), the National Hospital for Neurology and Neurosurgery, University College London Hospitals; Department of Clinical and Movement Neurosciences (Z.J.), UCL Queen Square Institute of Neurology, London, United Kingdom; Department of Neurology (L.D., S.S.S.), Perelman School of Medicine, University of Pennsylvania, Philadelphia; Department of Human Genetics and Hussman Institute for Human Genomics (A.P.R., S.Z.), University of Miami, FL; Department of Neurogenetics (C.E.W., J.M.P.), the National Hospital for Neurology and Neurosurgery, University College London Hospitals; Neurometabolic Unit (I.P.H.), the National Hospital for Neurology and Neurosurgery, University College London Hospitals; and Department of Neurodegenerative Disease (S.B.), UCL Queen Square Institute of Neurology, London, United Kingdom.
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Mary M. Reilly
From the Department of Neuromuscular Diseases (A.H., A.C., M.G.H., M.M.R.), UCL Queen Square Institute of Neurology and the National Hospital for Neurology and Neurosurgery, University College London Hospitals; Department of Molecular Neuroscience (A.M.P., H.H.), UCL Queen Square Institute of Neurology; Department of Neuro-ophthalmology (F.B.F.R.C.O.), the National Hospital for Neurology and Neurosurgery, University College London Hospitals; Division of Neuropathology (Z.J., S.B.), the National Hospital for Neurology and Neurosurgery, University College London Hospitals; Department of Clinical and Movement Neurosciences (Z.J.), UCL Queen Square Institute of Neurology, London, United Kingdom; Department of Neurology (L.D., S.S.S.), Perelman School of Medicine, University of Pennsylvania, Philadelphia; Department of Human Genetics and Hussman Institute for Human Genomics (A.P.R., S.Z.), University of Miami, FL; Department of Neurogenetics (C.E.W., J.M.P.), the National Hospital for Neurology and Neurosurgery, University College London Hospitals; Neurometabolic Unit (I.P.H.), the National Hospital for Neurology and Neurosurgery, University College London Hospitals; and Department of Neurodegenerative Disease (S.B.), UCL Queen Square Institute of Neurology, London, United Kingdom.
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Citation
Autosomal dominant optic atrophy and cataract “plus” phenotype including axonal neuropathy
Alejandro Horga, Enrico Bugiardini, Andreea Manole, Fion Bremner, Zane Jaunmuktane, Lois Dankwa, Adriana P. Rebelo, Catherine E. Woodward, Iain P. Hargreaves, Andrea Cortese, Alan M. Pittman, Sebastian Brandner, James M. Polke, Robert D.S. Pitceathly, Stephan Züchner, Michael G. Hanna, Steven S. Scherer, Henry Houlden, Mary M. Reilly
Neurol Genet Apr 2019, 5 (2) e322; DOI: 10.1212/NXG.0000000000000322

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Abstract

Objective To characterize the phenotype in individuals with OPA3-related autosomal dominant optic atrophy and cataract (ADOAC) and peripheral neuropathy (PN).

Methods Two probands with multiple affected relatives and one sporadic case were referred for evaluation of a PN. Their phenotype was determined by clinical ± neurophysiological assessment. Neuropathologic examination of sural nerve and skeletal muscle, and ultrastructural analysis of mitochondria in fibroblasts were performed in one case. Exome sequencing was performed in the probands.

Results The main clinical features in one family (n = 7 affected individuals) and one sporadic case were early-onset cataracts (n = 7), symptoms of gastrointestinal dysmotility (n = 8), and possible/confirmed PN (n = 7). Impaired vision was an early-onset feature in another family (n = 4 affected individuals), in which 3 members had symptoms of gastrointestinal dysmotility and 2 developed PN and cataracts. The less common features among all individuals included symptoms/signs of autonomic dysfunction (n = 3), hearing loss (n = 3), and recurrent pancreatitis (n = 1). In 5 individuals, the neuropathy was axonal and clinically asymptomatic (n = 1), sensory-predominant (n = 2), or motor and sensory (n = 2). In one patient, nerve biopsy revealed a loss of large and small myelinated fibers. In fibroblasts, mitochondria were frequently enlarged with slightly fragmented cristae. The exome sequencing identified OPA3 variants in all probands: a novel variant (c.23T>C) and the known mutation (c.313C>G) in OPA3.

Conclusions A syndromic form of ADOAC (ADOAC+), in which axonal neuropathy may be a major feature, is described. OPA3 mutations should be included in the differential diagnosis of complex inherited PN, even in the absence of clinically apparent optic atrophy.

Glossary

AA=
amino acid;
ADOAC=
autosomal dominant optic atrophy and cataracts;
DOA=
dominant optic atrophy;
EM=
electron microscope;
ETC=
electron transport chain;
MGA3=
3-methylglutaconic aciduria type III (Costeff syndrome);
MTS=
mitochondrial targeting sequence;
NCS=
nerve conduction study;
OA=
optic atrophy;
OPA3=
Optic atrophy 3 protein;
PN=
peripheral neuropathy

Footnotes

  • Funding information and disclosures are provided at the end of the article. Full disclosure form information provided by the authors is available with the full text of this article at Neurology.org/NG.

  • ↵* These authors contributed equally to the manuscript.

  • The Article Processing Charge was funded by University College London.

  • Received November 16, 2018.
  • Accepted in final form February 1, 2019.
  • Copyright © 2019 The Author(s). Published by Wolters Kluwer Health, Inc. on behalf of the American Academy of Neurology.

This is an open access article distributed under the terms of the Creative Commons Attribution License 4.0 (CC BY), which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.

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