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February 17, 2015; 84 (7) Article

Fe/S protein assembly gene IBA57 mutation causes hereditary spastic paraplegia

Alexander Lossos, Claudia Stümpfig, Giovanni Stevanin, Marion Gaussen, Bat-El Zimmerman, Emeline Mundwiller, Moriya Asulin, Liat Chamma, Ruth Sheffer, Adel Misk, Shlomo Dotan, John M. Gomori, Penina Ponger, Alexis Brice, Israela Lerer, Vardiella Meiner, Roland Lill
First published January 21, 2015, DOI: https://doi.org/10.1212/WNL.0000000000001270
Alexander Lossos
From the Department of Neurology and Agnes Ginges Center for Human Neurogenetics (A.L., P.P.), Department of Genetics and Metabolic Diseases (B.-E.Z., M.A., L.C., R.S., I.L., V.M.), Neuro-Ophthalmology Center, Department of Ophthalmology (S.D.), and Department of Radiology (J.M.G.), Hebrew University–Hadassah Medical Center, Jerusalem, Israel; Institut für Zytobiologie und Zytopathologie (C.S., R.L.), Philipps-Universität Marburg, Germany; Laboratoire de Neurogénétique (G.S., M.G.), Ecole Pratique des Hautes Etudes–heSam Universite, Institut du Cerveau et de la Moelle épinière, Paris; Inserm U1127 (G.S., M.G., E.M., A.B.), CNRS UMR7225, Sorbonne Universites, UPMC Univ Paris 06 UMR_1127, Institut du Cerveau et de la Moelle epiniere, ICM, Paris; APHP (G.S., A.B.), Fédération de Génétique, Groupe Hospitalier Pitié-Salpêtrière, Paris; Institut du Cerveau et de la Moelle épinière (G.S., E.M., A.B.), Genotyping and Sequencing Facility, Paris, France; Department of Neurology (A.M.), Shaare Zedek Medical Center, Jerusalem, Israel; Max-Planck-Institut für terrestrische Mikrobiologie (R.L.), Marburg; and LOEWE Zentrum für Synthetische Mikrobiologie SynMikro (R.L.), Marburg, Germany.
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Claudia Stümpfig
From the Department of Neurology and Agnes Ginges Center for Human Neurogenetics (A.L., P.P.), Department of Genetics and Metabolic Diseases (B.-E.Z., M.A., L.C., R.S., I.L., V.M.), Neuro-Ophthalmology Center, Department of Ophthalmology (S.D.), and Department of Radiology (J.M.G.), Hebrew University–Hadassah Medical Center, Jerusalem, Israel; Institut für Zytobiologie und Zytopathologie (C.S., R.L.), Philipps-Universität Marburg, Germany; Laboratoire de Neurogénétique (G.S., M.G.), Ecole Pratique des Hautes Etudes–heSam Universite, Institut du Cerveau et de la Moelle épinière, Paris; Inserm U1127 (G.S., M.G., E.M., A.B.), CNRS UMR7225, Sorbonne Universites, UPMC Univ Paris 06 UMR_1127, Institut du Cerveau et de la Moelle epiniere, ICM, Paris; APHP (G.S., A.B.), Fédération de Génétique, Groupe Hospitalier Pitié-Salpêtrière, Paris; Institut du Cerveau et de la Moelle épinière (G.S., E.M., A.B.), Genotyping and Sequencing Facility, Paris, France; Department of Neurology (A.M.), Shaare Zedek Medical Center, Jerusalem, Israel; Max-Planck-Institut für terrestrische Mikrobiologie (R.L.), Marburg; and LOEWE Zentrum für Synthetische Mikrobiologie SynMikro (R.L.), Marburg, Germany.
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Giovanni Stevanin
From the Department of Neurology and Agnes Ginges Center for Human Neurogenetics (A.L., P.P.), Department of Genetics and Metabolic Diseases (B.-E.Z., M.A., L.C., R.S., I.L., V.M.), Neuro-Ophthalmology Center, Department of Ophthalmology (S.D.), and Department of Radiology (J.M.G.), Hebrew University–Hadassah Medical Center, Jerusalem, Israel; Institut für Zytobiologie und Zytopathologie (C.S., R.L.), Philipps-Universität Marburg, Germany; Laboratoire de Neurogénétique (G.S., M.G.), Ecole Pratique des Hautes Etudes–heSam Universite, Institut du Cerveau et de la Moelle épinière, Paris; Inserm U1127 (G.S., M.G., E.M., A.B.), CNRS UMR7225, Sorbonne Universites, UPMC Univ Paris 06 UMR_1127, Institut du Cerveau et de la Moelle epiniere, ICM, Paris; APHP (G.S., A.B.), Fédération de Génétique, Groupe Hospitalier Pitié-Salpêtrière, Paris; Institut du Cerveau et de la Moelle épinière (G.S., E.M., A.B.), Genotyping and Sequencing Facility, Paris, France; Department of Neurology (A.M.), Shaare Zedek Medical Center, Jerusalem, Israel; Max-Planck-Institut für terrestrische Mikrobiologie (R.L.), Marburg; and LOEWE Zentrum für Synthetische Mikrobiologie SynMikro (R.L.), Marburg, Germany.
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Marion Gaussen
From the Department of Neurology and Agnes Ginges Center for Human Neurogenetics (A.L., P.P.), Department of Genetics and Metabolic Diseases (B.-E.Z., M.A., L.C., R.S., I.L., V.M.), Neuro-Ophthalmology Center, Department of Ophthalmology (S.D.), and Department of Radiology (J.M.G.), Hebrew University–Hadassah Medical Center, Jerusalem, Israel; Institut für Zytobiologie und Zytopathologie (C.S., R.L.), Philipps-Universität Marburg, Germany; Laboratoire de Neurogénétique (G.S., M.G.), Ecole Pratique des Hautes Etudes–heSam Universite, Institut du Cerveau et de la Moelle épinière, Paris; Inserm U1127 (G.S., M.G., E.M., A.B.), CNRS UMR7225, Sorbonne Universites, UPMC Univ Paris 06 UMR_1127, Institut du Cerveau et de la Moelle epiniere, ICM, Paris; APHP (G.S., A.B.), Fédération de Génétique, Groupe Hospitalier Pitié-Salpêtrière, Paris; Institut du Cerveau et de la Moelle épinière (G.S., E.M., A.B.), Genotyping and Sequencing Facility, Paris, France; Department of Neurology (A.M.), Shaare Zedek Medical Center, Jerusalem, Israel; Max-Planck-Institut für terrestrische Mikrobiologie (R.L.), Marburg; and LOEWE Zentrum für Synthetische Mikrobiologie SynMikro (R.L.), Marburg, Germany.
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Bat-El Zimmerman
From the Department of Neurology and Agnes Ginges Center for Human Neurogenetics (A.L., P.P.), Department of Genetics and Metabolic Diseases (B.-E.Z., M.A., L.C., R.S., I.L., V.M.), Neuro-Ophthalmology Center, Department of Ophthalmology (S.D.), and Department of Radiology (J.M.G.), Hebrew University–Hadassah Medical Center, Jerusalem, Israel; Institut für Zytobiologie und Zytopathologie (C.S., R.L.), Philipps-Universität Marburg, Germany; Laboratoire de Neurogénétique (G.S., M.G.), Ecole Pratique des Hautes Etudes–heSam Universite, Institut du Cerveau et de la Moelle épinière, Paris; Inserm U1127 (G.S., M.G., E.M., A.B.), CNRS UMR7225, Sorbonne Universites, UPMC Univ Paris 06 UMR_1127, Institut du Cerveau et de la Moelle epiniere, ICM, Paris; APHP (G.S., A.B.), Fédération de Génétique, Groupe Hospitalier Pitié-Salpêtrière, Paris; Institut du Cerveau et de la Moelle épinière (G.S., E.M., A.B.), Genotyping and Sequencing Facility, Paris, France; Department of Neurology (A.M.), Shaare Zedek Medical Center, Jerusalem, Israel; Max-Planck-Institut für terrestrische Mikrobiologie (R.L.), Marburg; and LOEWE Zentrum für Synthetische Mikrobiologie SynMikro (R.L.), Marburg, Germany.
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Emeline Mundwiller
From the Department of Neurology and Agnes Ginges Center for Human Neurogenetics (A.L., P.P.), Department of Genetics and Metabolic Diseases (B.-E.Z., M.A., L.C., R.S., I.L., V.M.), Neuro-Ophthalmology Center, Department of Ophthalmology (S.D.), and Department of Radiology (J.M.G.), Hebrew University–Hadassah Medical Center, Jerusalem, Israel; Institut für Zytobiologie und Zytopathologie (C.S., R.L.), Philipps-Universität Marburg, Germany; Laboratoire de Neurogénétique (G.S., M.G.), Ecole Pratique des Hautes Etudes–heSam Universite, Institut du Cerveau et de la Moelle épinière, Paris; Inserm U1127 (G.S., M.G., E.M., A.B.), CNRS UMR7225, Sorbonne Universites, UPMC Univ Paris 06 UMR_1127, Institut du Cerveau et de la Moelle epiniere, ICM, Paris; APHP (G.S., A.B.), Fédération de Génétique, Groupe Hospitalier Pitié-Salpêtrière, Paris; Institut du Cerveau et de la Moelle épinière (G.S., E.M., A.B.), Genotyping and Sequencing Facility, Paris, France; Department of Neurology (A.M.), Shaare Zedek Medical Center, Jerusalem, Israel; Max-Planck-Institut für terrestrische Mikrobiologie (R.L.), Marburg; and LOEWE Zentrum für Synthetische Mikrobiologie SynMikro (R.L.), Marburg, Germany.
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Moriya Asulin
From the Department of Neurology and Agnes Ginges Center for Human Neurogenetics (A.L., P.P.), Department of Genetics and Metabolic Diseases (B.-E.Z., M.A., L.C., R.S., I.L., V.M.), Neuro-Ophthalmology Center, Department of Ophthalmology (S.D.), and Department of Radiology (J.M.G.), Hebrew University–Hadassah Medical Center, Jerusalem, Israel; Institut für Zytobiologie und Zytopathologie (C.S., R.L.), Philipps-Universität Marburg, Germany; Laboratoire de Neurogénétique (G.S., M.G.), Ecole Pratique des Hautes Etudes–heSam Universite, Institut du Cerveau et de la Moelle épinière, Paris; Inserm U1127 (G.S., M.G., E.M., A.B.), CNRS UMR7225, Sorbonne Universites, UPMC Univ Paris 06 UMR_1127, Institut du Cerveau et de la Moelle epiniere, ICM, Paris; APHP (G.S., A.B.), Fédération de Génétique, Groupe Hospitalier Pitié-Salpêtrière, Paris; Institut du Cerveau et de la Moelle épinière (G.S., E.M., A.B.), Genotyping and Sequencing Facility, Paris, France; Department of Neurology (A.M.), Shaare Zedek Medical Center, Jerusalem, Israel; Max-Planck-Institut für terrestrische Mikrobiologie (R.L.), Marburg; and LOEWE Zentrum für Synthetische Mikrobiologie SynMikro (R.L.), Marburg, Germany.
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Liat Chamma
From the Department of Neurology and Agnes Ginges Center for Human Neurogenetics (A.L., P.P.), Department of Genetics and Metabolic Diseases (B.-E.Z., M.A., L.C., R.S., I.L., V.M.), Neuro-Ophthalmology Center, Department of Ophthalmology (S.D.), and Department of Radiology (J.M.G.), Hebrew University–Hadassah Medical Center, Jerusalem, Israel; Institut für Zytobiologie und Zytopathologie (C.S., R.L.), Philipps-Universität Marburg, Germany; Laboratoire de Neurogénétique (G.S., M.G.), Ecole Pratique des Hautes Etudes–heSam Universite, Institut du Cerveau et de la Moelle épinière, Paris; Inserm U1127 (G.S., M.G., E.M., A.B.), CNRS UMR7225, Sorbonne Universites, UPMC Univ Paris 06 UMR_1127, Institut du Cerveau et de la Moelle epiniere, ICM, Paris; APHP (G.S., A.B.), Fédération de Génétique, Groupe Hospitalier Pitié-Salpêtrière, Paris; Institut du Cerveau et de la Moelle épinière (G.S., E.M., A.B.), Genotyping and Sequencing Facility, Paris, France; Department of Neurology (A.M.), Shaare Zedek Medical Center, Jerusalem, Israel; Max-Planck-Institut für terrestrische Mikrobiologie (R.L.), Marburg; and LOEWE Zentrum für Synthetische Mikrobiologie SynMikro (R.L.), Marburg, Germany.
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Ruth Sheffer
From the Department of Neurology and Agnes Ginges Center for Human Neurogenetics (A.L., P.P.), Department of Genetics and Metabolic Diseases (B.-E.Z., M.A., L.C., R.S., I.L., V.M.), Neuro-Ophthalmology Center, Department of Ophthalmology (S.D.), and Department of Radiology (J.M.G.), Hebrew University–Hadassah Medical Center, Jerusalem, Israel; Institut für Zytobiologie und Zytopathologie (C.S., R.L.), Philipps-Universität Marburg, Germany; Laboratoire de Neurogénétique (G.S., M.G.), Ecole Pratique des Hautes Etudes–heSam Universite, Institut du Cerveau et de la Moelle épinière, Paris; Inserm U1127 (G.S., M.G., E.M., A.B.), CNRS UMR7225, Sorbonne Universites, UPMC Univ Paris 06 UMR_1127, Institut du Cerveau et de la Moelle epiniere, ICM, Paris; APHP (G.S., A.B.), Fédération de Génétique, Groupe Hospitalier Pitié-Salpêtrière, Paris; Institut du Cerveau et de la Moelle épinière (G.S., E.M., A.B.), Genotyping and Sequencing Facility, Paris, France; Department of Neurology (A.M.), Shaare Zedek Medical Center, Jerusalem, Israel; Max-Planck-Institut für terrestrische Mikrobiologie (R.L.), Marburg; and LOEWE Zentrum für Synthetische Mikrobiologie SynMikro (R.L.), Marburg, Germany.
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Adel Misk
From the Department of Neurology and Agnes Ginges Center for Human Neurogenetics (A.L., P.P.), Department of Genetics and Metabolic Diseases (B.-E.Z., M.A., L.C., R.S., I.L., V.M.), Neuro-Ophthalmology Center, Department of Ophthalmology (S.D.), and Department of Radiology (J.M.G.), Hebrew University–Hadassah Medical Center, Jerusalem, Israel; Institut für Zytobiologie und Zytopathologie (C.S., R.L.), Philipps-Universität Marburg, Germany; Laboratoire de Neurogénétique (G.S., M.G.), Ecole Pratique des Hautes Etudes–heSam Universite, Institut du Cerveau et de la Moelle épinière, Paris; Inserm U1127 (G.S., M.G., E.M., A.B.), CNRS UMR7225, Sorbonne Universites, UPMC Univ Paris 06 UMR_1127, Institut du Cerveau et de la Moelle epiniere, ICM, Paris; APHP (G.S., A.B.), Fédération de Génétique, Groupe Hospitalier Pitié-Salpêtrière, Paris; Institut du Cerveau et de la Moelle épinière (G.S., E.M., A.B.), Genotyping and Sequencing Facility, Paris, France; Department of Neurology (A.M.), Shaare Zedek Medical Center, Jerusalem, Israel; Max-Planck-Institut für terrestrische Mikrobiologie (R.L.), Marburg; and LOEWE Zentrum für Synthetische Mikrobiologie SynMikro (R.L.), Marburg, Germany.
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Shlomo Dotan
From the Department of Neurology and Agnes Ginges Center for Human Neurogenetics (A.L., P.P.), Department of Genetics and Metabolic Diseases (B.-E.Z., M.A., L.C., R.S., I.L., V.M.), Neuro-Ophthalmology Center, Department of Ophthalmology (S.D.), and Department of Radiology (J.M.G.), Hebrew University–Hadassah Medical Center, Jerusalem, Israel; Institut für Zytobiologie und Zytopathologie (C.S., R.L.), Philipps-Universität Marburg, Germany; Laboratoire de Neurogénétique (G.S., M.G.), Ecole Pratique des Hautes Etudes–heSam Universite, Institut du Cerveau et de la Moelle épinière, Paris; Inserm U1127 (G.S., M.G., E.M., A.B.), CNRS UMR7225, Sorbonne Universites, UPMC Univ Paris 06 UMR_1127, Institut du Cerveau et de la Moelle epiniere, ICM, Paris; APHP (G.S., A.B.), Fédération de Génétique, Groupe Hospitalier Pitié-Salpêtrière, Paris; Institut du Cerveau et de la Moelle épinière (G.S., E.M., A.B.), Genotyping and Sequencing Facility, Paris, France; Department of Neurology (A.M.), Shaare Zedek Medical Center, Jerusalem, Israel; Max-Planck-Institut für terrestrische Mikrobiologie (R.L.), Marburg; and LOEWE Zentrum für Synthetische Mikrobiologie SynMikro (R.L.), Marburg, Germany.
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John M. Gomori
From the Department of Neurology and Agnes Ginges Center for Human Neurogenetics (A.L., P.P.), Department of Genetics and Metabolic Diseases (B.-E.Z., M.A., L.C., R.S., I.L., V.M.), Neuro-Ophthalmology Center, Department of Ophthalmology (S.D.), and Department of Radiology (J.M.G.), Hebrew University–Hadassah Medical Center, Jerusalem, Israel; Institut für Zytobiologie und Zytopathologie (C.S., R.L.), Philipps-Universität Marburg, Germany; Laboratoire de Neurogénétique (G.S., M.G.), Ecole Pratique des Hautes Etudes–heSam Universite, Institut du Cerveau et de la Moelle épinière, Paris; Inserm U1127 (G.S., M.G., E.M., A.B.), CNRS UMR7225, Sorbonne Universites, UPMC Univ Paris 06 UMR_1127, Institut du Cerveau et de la Moelle epiniere, ICM, Paris; APHP (G.S., A.B.), Fédération de Génétique, Groupe Hospitalier Pitié-Salpêtrière, Paris; Institut du Cerveau et de la Moelle épinière (G.S., E.M., A.B.), Genotyping and Sequencing Facility, Paris, France; Department of Neurology (A.M.), Shaare Zedek Medical Center, Jerusalem, Israel; Max-Planck-Institut für terrestrische Mikrobiologie (R.L.), Marburg; and LOEWE Zentrum für Synthetische Mikrobiologie SynMikro (R.L.), Marburg, Germany.
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Penina Ponger
From the Department of Neurology and Agnes Ginges Center for Human Neurogenetics (A.L., P.P.), Department of Genetics and Metabolic Diseases (B.-E.Z., M.A., L.C., R.S., I.L., V.M.), Neuro-Ophthalmology Center, Department of Ophthalmology (S.D.), and Department of Radiology (J.M.G.), Hebrew University–Hadassah Medical Center, Jerusalem, Israel; Institut für Zytobiologie und Zytopathologie (C.S., R.L.), Philipps-Universität Marburg, Germany; Laboratoire de Neurogénétique (G.S., M.G.), Ecole Pratique des Hautes Etudes–heSam Universite, Institut du Cerveau et de la Moelle épinière, Paris; Inserm U1127 (G.S., M.G., E.M., A.B.), CNRS UMR7225, Sorbonne Universites, UPMC Univ Paris 06 UMR_1127, Institut du Cerveau et de la Moelle epiniere, ICM, Paris; APHP (G.S., A.B.), Fédération de Génétique, Groupe Hospitalier Pitié-Salpêtrière, Paris; Institut du Cerveau et de la Moelle épinière (G.S., E.M., A.B.), Genotyping and Sequencing Facility, Paris, France; Department of Neurology (A.M.), Shaare Zedek Medical Center, Jerusalem, Israel; Max-Planck-Institut für terrestrische Mikrobiologie (R.L.), Marburg; and LOEWE Zentrum für Synthetische Mikrobiologie SynMikro (R.L.), Marburg, Germany.
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Alexis Brice
From the Department of Neurology and Agnes Ginges Center for Human Neurogenetics (A.L., P.P.), Department of Genetics and Metabolic Diseases (B.-E.Z., M.A., L.C., R.S., I.L., V.M.), Neuro-Ophthalmology Center, Department of Ophthalmology (S.D.), and Department of Radiology (J.M.G.), Hebrew University–Hadassah Medical Center, Jerusalem, Israel; Institut für Zytobiologie und Zytopathologie (C.S., R.L.), Philipps-Universität Marburg, Germany; Laboratoire de Neurogénétique (G.S., M.G.), Ecole Pratique des Hautes Etudes–heSam Universite, Institut du Cerveau et de la Moelle épinière, Paris; Inserm U1127 (G.S., M.G., E.M., A.B.), CNRS UMR7225, Sorbonne Universites, UPMC Univ Paris 06 UMR_1127, Institut du Cerveau et de la Moelle epiniere, ICM, Paris; APHP (G.S., A.B.), Fédération de Génétique, Groupe Hospitalier Pitié-Salpêtrière, Paris; Institut du Cerveau et de la Moelle épinière (G.S., E.M., A.B.), Genotyping and Sequencing Facility, Paris, France; Department of Neurology (A.M.), Shaare Zedek Medical Center, Jerusalem, Israel; Max-Planck-Institut für terrestrische Mikrobiologie (R.L.), Marburg; and LOEWE Zentrum für Synthetische Mikrobiologie SynMikro (R.L.), Marburg, Germany.
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Israela Lerer
From the Department of Neurology and Agnes Ginges Center for Human Neurogenetics (A.L., P.P.), Department of Genetics and Metabolic Diseases (B.-E.Z., M.A., L.C., R.S., I.L., V.M.), Neuro-Ophthalmology Center, Department of Ophthalmology (S.D.), and Department of Radiology (J.M.G.), Hebrew University–Hadassah Medical Center, Jerusalem, Israel; Institut für Zytobiologie und Zytopathologie (C.S., R.L.), Philipps-Universität Marburg, Germany; Laboratoire de Neurogénétique (G.S., M.G.), Ecole Pratique des Hautes Etudes–heSam Universite, Institut du Cerveau et de la Moelle épinière, Paris; Inserm U1127 (G.S., M.G., E.M., A.B.), CNRS UMR7225, Sorbonne Universites, UPMC Univ Paris 06 UMR_1127, Institut du Cerveau et de la Moelle epiniere, ICM, Paris; APHP (G.S., A.B.), Fédération de Génétique, Groupe Hospitalier Pitié-Salpêtrière, Paris; Institut du Cerveau et de la Moelle épinière (G.S., E.M., A.B.), Genotyping and Sequencing Facility, Paris, France; Department of Neurology (A.M.), Shaare Zedek Medical Center, Jerusalem, Israel; Max-Planck-Institut für terrestrische Mikrobiologie (R.L.), Marburg; and LOEWE Zentrum für Synthetische Mikrobiologie SynMikro (R.L.), Marburg, Germany.
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Vardiella Meiner
From the Department of Neurology and Agnes Ginges Center for Human Neurogenetics (A.L., P.P.), Department of Genetics and Metabolic Diseases (B.-E.Z., M.A., L.C., R.S., I.L., V.M.), Neuro-Ophthalmology Center, Department of Ophthalmology (S.D.), and Department of Radiology (J.M.G.), Hebrew University–Hadassah Medical Center, Jerusalem, Israel; Institut für Zytobiologie und Zytopathologie (C.S., R.L.), Philipps-Universität Marburg, Germany; Laboratoire de Neurogénétique (G.S., M.G.), Ecole Pratique des Hautes Etudes–heSam Universite, Institut du Cerveau et de la Moelle épinière, Paris; Inserm U1127 (G.S., M.G., E.M., A.B.), CNRS UMR7225, Sorbonne Universites, UPMC Univ Paris 06 UMR_1127, Institut du Cerveau et de la Moelle epiniere, ICM, Paris; APHP (G.S., A.B.), Fédération de Génétique, Groupe Hospitalier Pitié-Salpêtrière, Paris; Institut du Cerveau et de la Moelle épinière (G.S., E.M., A.B.), Genotyping and Sequencing Facility, Paris, France; Department of Neurology (A.M.), Shaare Zedek Medical Center, Jerusalem, Israel; Max-Planck-Institut für terrestrische Mikrobiologie (R.L.), Marburg; and LOEWE Zentrum für Synthetische Mikrobiologie SynMikro (R.L.), Marburg, Germany.
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Roland Lill
From the Department of Neurology and Agnes Ginges Center for Human Neurogenetics (A.L., P.P.), Department of Genetics and Metabolic Diseases (B.-E.Z., M.A., L.C., R.S., I.L., V.M.), Neuro-Ophthalmology Center, Department of Ophthalmology (S.D.), and Department of Radiology (J.M.G.), Hebrew University–Hadassah Medical Center, Jerusalem, Israel; Institut für Zytobiologie und Zytopathologie (C.S., R.L.), Philipps-Universität Marburg, Germany; Laboratoire de Neurogénétique (G.S., M.G.), Ecole Pratique des Hautes Etudes–heSam Universite, Institut du Cerveau et de la Moelle épinière, Paris; Inserm U1127 (G.S., M.G., E.M., A.B.), CNRS UMR7225, Sorbonne Universites, UPMC Univ Paris 06 UMR_1127, Institut du Cerveau et de la Moelle epiniere, ICM, Paris; APHP (G.S., A.B.), Fédération de Génétique, Groupe Hospitalier Pitié-Salpêtrière, Paris; Institut du Cerveau et de la Moelle épinière (G.S., E.M., A.B.), Genotyping and Sequencing Facility, Paris, France; Department of Neurology (A.M.), Shaare Zedek Medical Center, Jerusalem, Israel; Max-Planck-Institut für terrestrische Mikrobiologie (R.L.), Marburg; and LOEWE Zentrum für Synthetische Mikrobiologie SynMikro (R.L.), Marburg, Germany.
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Citation
Fe/S protein assembly gene IBA57 mutation causes hereditary spastic paraplegia
Alexander Lossos, Claudia Stümpfig, Giovanni Stevanin, Marion Gaussen, Bat-El Zimmerman, Emeline Mundwiller, Moriya Asulin, Liat Chamma, Ruth Sheffer, Adel Misk, Shlomo Dotan, John M. Gomori, Penina Ponger, Alexis Brice, Israela Lerer, Vardiella Meiner, Roland Lill
Neurology Feb 2015, 84 (7) 659-667; DOI: 10.1212/WNL.0000000000001270

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Abstract

Objective: To present the clinical, molecular, and cell biological findings in a family with an autosomal recessive form of hereditary spastic paraplegia characterized by a combination of spastic paraplegia, optic atrophy, and peripheral neuropathy (SPOAN).

Methods: We used a combination of whole-genome linkage analysis and exome sequencing to map the disease locus and to identify the responsible gene. To analyze the physiologic consequences of the disease, we used biochemical and cell biological methods.

Results: Ten members of a highly consanguineous family manifested a childhood-onset SPOAN-like phenotype with slow progression into late adulthood. We mapped this disorder to a locus on chromosome 1q and identified a homozygous donor splice-site mutation in the IBA57 gene, previously implicated in 2 infants with lethal perinatal encephalomyopathy. This gene encodes the mitochondrial iron-sulfur (Fe/S) protein assembly factor IBA57. In addition to a severely decreased amount of normal IBA57 messenger RNA, a patient's cells expressed an aberrantly spliced messenger RNA with a premature stop codon. Lymphoblasts contained 10-fold–lower levels of wild-type, but no signs of truncated IBA57 protein. The decrease in functional IBA57 resulted in reduced levels and activities of several mitochondrial [4Fe-4S] proteins, including complexes I and II, while mitochondrial [2Fe-2S] proteins remained normal.

Conclusions: Our findings reinforce the suggested specific function of IBA57 in mitochondrial [4Fe-4S] protein maturation and provide additional evidence for its role in human disease. The less decreased IBA57 protein level in this family explains phenotypic differences compared with the previously described lethal encephalomyopathy with no functional IBA57.

GLOSSARY

αKGDH=
α-ketoglutarate dehydrogenase;
bp=
base pair;
cDNA=
complementary DNA;
HSP=
hereditary spastic paraplegia;
ISC=
iron/sulfur cluster;
LIAS=
lipoic acid synthase;
mitoAco=
mitochondrial aconitase;
MMDS3=
multiple mitochondrial dysfunction syndrome 3;
mRNA=
messenger RNA;
NHLBI=
National Heart, Lung, and Blood Institute;
PDH=
pyruvate dehydrogenase;
SDS-PAGE=
sodium dodecyl sulfate–polyacrylamide gel electrophoresis;
SPOAN=
spastic paraplegia, optic atrophy, and peripheral neuropathy

Footnotes

  • ↵* These authors contributed equally to this work.

  • Go to Neurology.org for full disclosures. Funding information and disclosures deemed relevant by the authors, if any, are provided at the end of the article.

  • Supplemental data at Neurology.org

  • Received July 27, 2014.
  • Accepted in final form October 23, 2014.
  • © 2015 American Academy of Neurology
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