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October 17, 2017; 89 (16) Article

Analysis of blood-based gene expression in idiopathic Parkinson disease

Ron Shamir, Christine Klein, David Amar, Eva-Juliane Vollstedt, Michael Bonin, Marija Usenovic, Yvette C. Wong, Ales Maver, Sven Poths, Hershel Safer, Jean-Christophe Corvol, Suzanne Lesage, Ofer Lavi, Günther Deuschl, Gregor Kuhlenbaeumer, Heike Pawlack, Igor Ulitsky, Meike Kasten, Olaf Riess, Alexis Brice, Borut Peterlin, Dimitri Krainc
First published September 15, 2017, DOI: https://doi.org/10.1212/WNL.0000000000004516
Ron Shamir
From the School of Computer Science (R.S., D.A., H.S.), Tel Aviv University, Israel; Institute of Neurogenetics (C.K., E.-J.V., H.P., M.K.), University of Lübeck, Germany; Department of Psychiatry and Psychotherapy (E.-J.V., M.K.), University of Lübeck, Germany; Institute of Medical Genetics and Applied Genomics (M.B., S.P., O.R.), University of Tübingen, Germany; IMGM Laboratories GmbH (M.B.), Martinsried, Germany; Mediterranean Institute for Life Sciences (M.U.), Split, Croatia; Department of Neurology (Y.C.W., D.K.), Northwestern University Feinberg School of Medicine, Chicago, IL; Clinical Institute of Medical Genetics (A.M., B.P.), University Medical Center Ljubljana, Slovenia; Sorbonne Universités (J.C.-C., S.L., A.B.), UPMC Université Paris 6 UMR S 1127, Inserm U 1127, CNRS UMR 7225, Institut du Cerveau et de la Moelle épinière, ICM, Paris, France; Centre d'Investigation Clinique Pitié Neurosciences CIC-1422 (J.C.-C.), Paris, France; Machine Learning Technologies Group (O.L.), IBM Research-Haifa, Mount Carmel, Israel; Department of Neurology (G.D., G.K.), Kiel University, Germany; and Department of Biological Regulation (I.U.), Weizmann Institute of Science, Rehovot, Israel.
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Christine Klein
From the School of Computer Science (R.S., D.A., H.S.), Tel Aviv University, Israel; Institute of Neurogenetics (C.K., E.-J.V., H.P., M.K.), University of Lübeck, Germany; Department of Psychiatry and Psychotherapy (E.-J.V., M.K.), University of Lübeck, Germany; Institute of Medical Genetics and Applied Genomics (M.B., S.P., O.R.), University of Tübingen, Germany; IMGM Laboratories GmbH (M.B.), Martinsried, Germany; Mediterranean Institute for Life Sciences (M.U.), Split, Croatia; Department of Neurology (Y.C.W., D.K.), Northwestern University Feinberg School of Medicine, Chicago, IL; Clinical Institute of Medical Genetics (A.M., B.P.), University Medical Center Ljubljana, Slovenia; Sorbonne Universités (J.C.-C., S.L., A.B.), UPMC Université Paris 6 UMR S 1127, Inserm U 1127, CNRS UMR 7225, Institut du Cerveau et de la Moelle épinière, ICM, Paris, France; Centre d'Investigation Clinique Pitié Neurosciences CIC-1422 (J.C.-C.), Paris, France; Machine Learning Technologies Group (O.L.), IBM Research-Haifa, Mount Carmel, Israel; Department of Neurology (G.D., G.K.), Kiel University, Germany; and Department of Biological Regulation (I.U.), Weizmann Institute of Science, Rehovot, Israel.
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David Amar
From the School of Computer Science (R.S., D.A., H.S.), Tel Aviv University, Israel; Institute of Neurogenetics (C.K., E.-J.V., H.P., M.K.), University of Lübeck, Germany; Department of Psychiatry and Psychotherapy (E.-J.V., M.K.), University of Lübeck, Germany; Institute of Medical Genetics and Applied Genomics (M.B., S.P., O.R.), University of Tübingen, Germany; IMGM Laboratories GmbH (M.B.), Martinsried, Germany; Mediterranean Institute for Life Sciences (M.U.), Split, Croatia; Department of Neurology (Y.C.W., D.K.), Northwestern University Feinberg School of Medicine, Chicago, IL; Clinical Institute of Medical Genetics (A.M., B.P.), University Medical Center Ljubljana, Slovenia; Sorbonne Universités (J.C.-C., S.L., A.B.), UPMC Université Paris 6 UMR S 1127, Inserm U 1127, CNRS UMR 7225, Institut du Cerveau et de la Moelle épinière, ICM, Paris, France; Centre d'Investigation Clinique Pitié Neurosciences CIC-1422 (J.C.-C.), Paris, France; Machine Learning Technologies Group (O.L.), IBM Research-Haifa, Mount Carmel, Israel; Department of Neurology (G.D., G.K.), Kiel University, Germany; and Department of Biological Regulation (I.U.), Weizmann Institute of Science, Rehovot, Israel.
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Eva-Juliane Vollstedt
From the School of Computer Science (R.S., D.A., H.S.), Tel Aviv University, Israel; Institute of Neurogenetics (C.K., E.-J.V., H.P., M.K.), University of Lübeck, Germany; Department of Psychiatry and Psychotherapy (E.-J.V., M.K.), University of Lübeck, Germany; Institute of Medical Genetics and Applied Genomics (M.B., S.P., O.R.), University of Tübingen, Germany; IMGM Laboratories GmbH (M.B.), Martinsried, Germany; Mediterranean Institute for Life Sciences (M.U.), Split, Croatia; Department of Neurology (Y.C.W., D.K.), Northwestern University Feinberg School of Medicine, Chicago, IL; Clinical Institute of Medical Genetics (A.M., B.P.), University Medical Center Ljubljana, Slovenia; Sorbonne Universités (J.C.-C., S.L., A.B.), UPMC Université Paris 6 UMR S 1127, Inserm U 1127, CNRS UMR 7225, Institut du Cerveau et de la Moelle épinière, ICM, Paris, France; Centre d'Investigation Clinique Pitié Neurosciences CIC-1422 (J.C.-C.), Paris, France; Machine Learning Technologies Group (O.L.), IBM Research-Haifa, Mount Carmel, Israel; Department of Neurology (G.D., G.K.), Kiel University, Germany; and Department of Biological Regulation (I.U.), Weizmann Institute of Science, Rehovot, Israel.
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Michael Bonin
From the School of Computer Science (R.S., D.A., H.S.), Tel Aviv University, Israel; Institute of Neurogenetics (C.K., E.-J.V., H.P., M.K.), University of Lübeck, Germany; Department of Psychiatry and Psychotherapy (E.-J.V., M.K.), University of Lübeck, Germany; Institute of Medical Genetics and Applied Genomics (M.B., S.P., O.R.), University of Tübingen, Germany; IMGM Laboratories GmbH (M.B.), Martinsried, Germany; Mediterranean Institute for Life Sciences (M.U.), Split, Croatia; Department of Neurology (Y.C.W., D.K.), Northwestern University Feinberg School of Medicine, Chicago, IL; Clinical Institute of Medical Genetics (A.M., B.P.), University Medical Center Ljubljana, Slovenia; Sorbonne Universités (J.C.-C., S.L., A.B.), UPMC Université Paris 6 UMR S 1127, Inserm U 1127, CNRS UMR 7225, Institut du Cerveau et de la Moelle épinière, ICM, Paris, France; Centre d'Investigation Clinique Pitié Neurosciences CIC-1422 (J.C.-C.), Paris, France; Machine Learning Technologies Group (O.L.), IBM Research-Haifa, Mount Carmel, Israel; Department of Neurology (G.D., G.K.), Kiel University, Germany; and Department of Biological Regulation (I.U.), Weizmann Institute of Science, Rehovot, Israel.
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Marija Usenovic
From the School of Computer Science (R.S., D.A., H.S.), Tel Aviv University, Israel; Institute of Neurogenetics (C.K., E.-J.V., H.P., M.K.), University of Lübeck, Germany; Department of Psychiatry and Psychotherapy (E.-J.V., M.K.), University of Lübeck, Germany; Institute of Medical Genetics and Applied Genomics (M.B., S.P., O.R.), University of Tübingen, Germany; IMGM Laboratories GmbH (M.B.), Martinsried, Germany; Mediterranean Institute for Life Sciences (M.U.), Split, Croatia; Department of Neurology (Y.C.W., D.K.), Northwestern University Feinberg School of Medicine, Chicago, IL; Clinical Institute of Medical Genetics (A.M., B.P.), University Medical Center Ljubljana, Slovenia; Sorbonne Universités (J.C.-C., S.L., A.B.), UPMC Université Paris 6 UMR S 1127, Inserm U 1127, CNRS UMR 7225, Institut du Cerveau et de la Moelle épinière, ICM, Paris, France; Centre d'Investigation Clinique Pitié Neurosciences CIC-1422 (J.C.-C.), Paris, France; Machine Learning Technologies Group (O.L.), IBM Research-Haifa, Mount Carmel, Israel; Department of Neurology (G.D., G.K.), Kiel University, Germany; and Department of Biological Regulation (I.U.), Weizmann Institute of Science, Rehovot, Israel.
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Yvette C. Wong
From the School of Computer Science (R.S., D.A., H.S.), Tel Aviv University, Israel; Institute of Neurogenetics (C.K., E.-J.V., H.P., M.K.), University of Lübeck, Germany; Department of Psychiatry and Psychotherapy (E.-J.V., M.K.), University of Lübeck, Germany; Institute of Medical Genetics and Applied Genomics (M.B., S.P., O.R.), University of Tübingen, Germany; IMGM Laboratories GmbH (M.B.), Martinsried, Germany; Mediterranean Institute for Life Sciences (M.U.), Split, Croatia; Department of Neurology (Y.C.W., D.K.), Northwestern University Feinberg School of Medicine, Chicago, IL; Clinical Institute of Medical Genetics (A.M., B.P.), University Medical Center Ljubljana, Slovenia; Sorbonne Universités (J.C.-C., S.L., A.B.), UPMC Université Paris 6 UMR S 1127, Inserm U 1127, CNRS UMR 7225, Institut du Cerveau et de la Moelle épinière, ICM, Paris, France; Centre d'Investigation Clinique Pitié Neurosciences CIC-1422 (J.C.-C.), Paris, France; Machine Learning Technologies Group (O.L.), IBM Research-Haifa, Mount Carmel, Israel; Department of Neurology (G.D., G.K.), Kiel University, Germany; and Department of Biological Regulation (I.U.), Weizmann Institute of Science, Rehovot, Israel.
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Ales Maver
From the School of Computer Science (R.S., D.A., H.S.), Tel Aviv University, Israel; Institute of Neurogenetics (C.K., E.-J.V., H.P., M.K.), University of Lübeck, Germany; Department of Psychiatry and Psychotherapy (E.-J.V., M.K.), University of Lübeck, Germany; Institute of Medical Genetics and Applied Genomics (M.B., S.P., O.R.), University of Tübingen, Germany; IMGM Laboratories GmbH (M.B.), Martinsried, Germany; Mediterranean Institute for Life Sciences (M.U.), Split, Croatia; Department of Neurology (Y.C.W., D.K.), Northwestern University Feinberg School of Medicine, Chicago, IL; Clinical Institute of Medical Genetics (A.M., B.P.), University Medical Center Ljubljana, Slovenia; Sorbonne Universités (J.C.-C., S.L., A.B.), UPMC Université Paris 6 UMR S 1127, Inserm U 1127, CNRS UMR 7225, Institut du Cerveau et de la Moelle épinière, ICM, Paris, France; Centre d'Investigation Clinique Pitié Neurosciences CIC-1422 (J.C.-C.), Paris, France; Machine Learning Technologies Group (O.L.), IBM Research-Haifa, Mount Carmel, Israel; Department of Neurology (G.D., G.K.), Kiel University, Germany; and Department of Biological Regulation (I.U.), Weizmann Institute of Science, Rehovot, Israel.
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Sven Poths
From the School of Computer Science (R.S., D.A., H.S.), Tel Aviv University, Israel; Institute of Neurogenetics (C.K., E.-J.V., H.P., M.K.), University of Lübeck, Germany; Department of Psychiatry and Psychotherapy (E.-J.V., M.K.), University of Lübeck, Germany; Institute of Medical Genetics and Applied Genomics (M.B., S.P., O.R.), University of Tübingen, Germany; IMGM Laboratories GmbH (M.B.), Martinsried, Germany; Mediterranean Institute for Life Sciences (M.U.), Split, Croatia; Department of Neurology (Y.C.W., D.K.), Northwestern University Feinberg School of Medicine, Chicago, IL; Clinical Institute of Medical Genetics (A.M., B.P.), University Medical Center Ljubljana, Slovenia; Sorbonne Universités (J.C.-C., S.L., A.B.), UPMC Université Paris 6 UMR S 1127, Inserm U 1127, CNRS UMR 7225, Institut du Cerveau et de la Moelle épinière, ICM, Paris, France; Centre d'Investigation Clinique Pitié Neurosciences CIC-1422 (J.C.-C.), Paris, France; Machine Learning Technologies Group (O.L.), IBM Research-Haifa, Mount Carmel, Israel; Department of Neurology (G.D., G.K.), Kiel University, Germany; and Department of Biological Regulation (I.U.), Weizmann Institute of Science, Rehovot, Israel.
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Hershel Safer
From the School of Computer Science (R.S., D.A., H.S.), Tel Aviv University, Israel; Institute of Neurogenetics (C.K., E.-J.V., H.P., M.K.), University of Lübeck, Germany; Department of Psychiatry and Psychotherapy (E.-J.V., M.K.), University of Lübeck, Germany; Institute of Medical Genetics and Applied Genomics (M.B., S.P., O.R.), University of Tübingen, Germany; IMGM Laboratories GmbH (M.B.), Martinsried, Germany; Mediterranean Institute for Life Sciences (M.U.), Split, Croatia; Department of Neurology (Y.C.W., D.K.), Northwestern University Feinberg School of Medicine, Chicago, IL; Clinical Institute of Medical Genetics (A.M., B.P.), University Medical Center Ljubljana, Slovenia; Sorbonne Universités (J.C.-C., S.L., A.B.), UPMC Université Paris 6 UMR S 1127, Inserm U 1127, CNRS UMR 7225, Institut du Cerveau et de la Moelle épinière, ICM, Paris, France; Centre d'Investigation Clinique Pitié Neurosciences CIC-1422 (J.C.-C.), Paris, France; Machine Learning Technologies Group (O.L.), IBM Research-Haifa, Mount Carmel, Israel; Department of Neurology (G.D., G.K.), Kiel University, Germany; and Department of Biological Regulation (I.U.), Weizmann Institute of Science, Rehovot, Israel.
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Jean-Christophe Corvol
From the School of Computer Science (R.S., D.A., H.S.), Tel Aviv University, Israel; Institute of Neurogenetics (C.K., E.-J.V., H.P., M.K.), University of Lübeck, Germany; Department of Psychiatry and Psychotherapy (E.-J.V., M.K.), University of Lübeck, Germany; Institute of Medical Genetics and Applied Genomics (M.B., S.P., O.R.), University of Tübingen, Germany; IMGM Laboratories GmbH (M.B.), Martinsried, Germany; Mediterranean Institute for Life Sciences (M.U.), Split, Croatia; Department of Neurology (Y.C.W., D.K.), Northwestern University Feinberg School of Medicine, Chicago, IL; Clinical Institute of Medical Genetics (A.M., B.P.), University Medical Center Ljubljana, Slovenia; Sorbonne Universités (J.C.-C., S.L., A.B.), UPMC Université Paris 6 UMR S 1127, Inserm U 1127, CNRS UMR 7225, Institut du Cerveau et de la Moelle épinière, ICM, Paris, France; Centre d'Investigation Clinique Pitié Neurosciences CIC-1422 (J.C.-C.), Paris, France; Machine Learning Technologies Group (O.L.), IBM Research-Haifa, Mount Carmel, Israel; Department of Neurology (G.D., G.K.), Kiel University, Germany; and Department of Biological Regulation (I.U.), Weizmann Institute of Science, Rehovot, Israel.
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Suzanne Lesage
From the School of Computer Science (R.S., D.A., H.S.), Tel Aviv University, Israel; Institute of Neurogenetics (C.K., E.-J.V., H.P., M.K.), University of Lübeck, Germany; Department of Psychiatry and Psychotherapy (E.-J.V., M.K.), University of Lübeck, Germany; Institute of Medical Genetics and Applied Genomics (M.B., S.P., O.R.), University of Tübingen, Germany; IMGM Laboratories GmbH (M.B.), Martinsried, Germany; Mediterranean Institute for Life Sciences (M.U.), Split, Croatia; Department of Neurology (Y.C.W., D.K.), Northwestern University Feinberg School of Medicine, Chicago, IL; Clinical Institute of Medical Genetics (A.M., B.P.), University Medical Center Ljubljana, Slovenia; Sorbonne Universités (J.C.-C., S.L., A.B.), UPMC Université Paris 6 UMR S 1127, Inserm U 1127, CNRS UMR 7225, Institut du Cerveau et de la Moelle épinière, ICM, Paris, France; Centre d'Investigation Clinique Pitié Neurosciences CIC-1422 (J.C.-C.), Paris, France; Machine Learning Technologies Group (O.L.), IBM Research-Haifa, Mount Carmel, Israel; Department of Neurology (G.D., G.K.), Kiel University, Germany; and Department of Biological Regulation (I.U.), Weizmann Institute of Science, Rehovot, Israel.
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Ofer Lavi
From the School of Computer Science (R.S., D.A., H.S.), Tel Aviv University, Israel; Institute of Neurogenetics (C.K., E.-J.V., H.P., M.K.), University of Lübeck, Germany; Department of Psychiatry and Psychotherapy (E.-J.V., M.K.), University of Lübeck, Germany; Institute of Medical Genetics and Applied Genomics (M.B., S.P., O.R.), University of Tübingen, Germany; IMGM Laboratories GmbH (M.B.), Martinsried, Germany; Mediterranean Institute for Life Sciences (M.U.), Split, Croatia; Department of Neurology (Y.C.W., D.K.), Northwestern University Feinberg School of Medicine, Chicago, IL; Clinical Institute of Medical Genetics (A.M., B.P.), University Medical Center Ljubljana, Slovenia; Sorbonne Universités (J.C.-C., S.L., A.B.), UPMC Université Paris 6 UMR S 1127, Inserm U 1127, CNRS UMR 7225, Institut du Cerveau et de la Moelle épinière, ICM, Paris, France; Centre d'Investigation Clinique Pitié Neurosciences CIC-1422 (J.C.-C.), Paris, France; Machine Learning Technologies Group (O.L.), IBM Research-Haifa, Mount Carmel, Israel; Department of Neurology (G.D., G.K.), Kiel University, Germany; and Department of Biological Regulation (I.U.), Weizmann Institute of Science, Rehovot, Israel.
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Günther Deuschl
From the School of Computer Science (R.S., D.A., H.S.), Tel Aviv University, Israel; Institute of Neurogenetics (C.K., E.-J.V., H.P., M.K.), University of Lübeck, Germany; Department of Psychiatry and Psychotherapy (E.-J.V., M.K.), University of Lübeck, Germany; Institute of Medical Genetics and Applied Genomics (M.B., S.P., O.R.), University of Tübingen, Germany; IMGM Laboratories GmbH (M.B.), Martinsried, Germany; Mediterranean Institute for Life Sciences (M.U.), Split, Croatia; Department of Neurology (Y.C.W., D.K.), Northwestern University Feinberg School of Medicine, Chicago, IL; Clinical Institute of Medical Genetics (A.M., B.P.), University Medical Center Ljubljana, Slovenia; Sorbonne Universités (J.C.-C., S.L., A.B.), UPMC Université Paris 6 UMR S 1127, Inserm U 1127, CNRS UMR 7225, Institut du Cerveau et de la Moelle épinière, ICM, Paris, France; Centre d'Investigation Clinique Pitié Neurosciences CIC-1422 (J.C.-C.), Paris, France; Machine Learning Technologies Group (O.L.), IBM Research-Haifa, Mount Carmel, Israel; Department of Neurology (G.D., G.K.), Kiel University, Germany; and Department of Biological Regulation (I.U.), Weizmann Institute of Science, Rehovot, Israel.
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Gregor Kuhlenbaeumer
From the School of Computer Science (R.S., D.A., H.S.), Tel Aviv University, Israel; Institute of Neurogenetics (C.K., E.-J.V., H.P., M.K.), University of Lübeck, Germany; Department of Psychiatry and Psychotherapy (E.-J.V., M.K.), University of Lübeck, Germany; Institute of Medical Genetics and Applied Genomics (M.B., S.P., O.R.), University of Tübingen, Germany; IMGM Laboratories GmbH (M.B.), Martinsried, Germany; Mediterranean Institute for Life Sciences (M.U.), Split, Croatia; Department of Neurology (Y.C.W., D.K.), Northwestern University Feinberg School of Medicine, Chicago, IL; Clinical Institute of Medical Genetics (A.M., B.P.), University Medical Center Ljubljana, Slovenia; Sorbonne Universités (J.C.-C., S.L., A.B.), UPMC Université Paris 6 UMR S 1127, Inserm U 1127, CNRS UMR 7225, Institut du Cerveau et de la Moelle épinière, ICM, Paris, France; Centre d'Investigation Clinique Pitié Neurosciences CIC-1422 (J.C.-C.), Paris, France; Machine Learning Technologies Group (O.L.), IBM Research-Haifa, Mount Carmel, Israel; Department of Neurology (G.D., G.K.), Kiel University, Germany; and Department of Biological Regulation (I.U.), Weizmann Institute of Science, Rehovot, Israel.
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Heike Pawlack
From the School of Computer Science (R.S., D.A., H.S.), Tel Aviv University, Israel; Institute of Neurogenetics (C.K., E.-J.V., H.P., M.K.), University of Lübeck, Germany; Department of Psychiatry and Psychotherapy (E.-J.V., M.K.), University of Lübeck, Germany; Institute of Medical Genetics and Applied Genomics (M.B., S.P., O.R.), University of Tübingen, Germany; IMGM Laboratories GmbH (M.B.), Martinsried, Germany; Mediterranean Institute for Life Sciences (M.U.), Split, Croatia; Department of Neurology (Y.C.W., D.K.), Northwestern University Feinberg School of Medicine, Chicago, IL; Clinical Institute of Medical Genetics (A.M., B.P.), University Medical Center Ljubljana, Slovenia; Sorbonne Universités (J.C.-C., S.L., A.B.), UPMC Université Paris 6 UMR S 1127, Inserm U 1127, CNRS UMR 7225, Institut du Cerveau et de la Moelle épinière, ICM, Paris, France; Centre d'Investigation Clinique Pitié Neurosciences CIC-1422 (J.C.-C.), Paris, France; Machine Learning Technologies Group (O.L.), IBM Research-Haifa, Mount Carmel, Israel; Department of Neurology (G.D., G.K.), Kiel University, Germany; and Department of Biological Regulation (I.U.), Weizmann Institute of Science, Rehovot, Israel.
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Igor Ulitsky
From the School of Computer Science (R.S., D.A., H.S.), Tel Aviv University, Israel; Institute of Neurogenetics (C.K., E.-J.V., H.P., M.K.), University of Lübeck, Germany; Department of Psychiatry and Psychotherapy (E.-J.V., M.K.), University of Lübeck, Germany; Institute of Medical Genetics and Applied Genomics (M.B., S.P., O.R.), University of Tübingen, Germany; IMGM Laboratories GmbH (M.B.), Martinsried, Germany; Mediterranean Institute for Life Sciences (M.U.), Split, Croatia; Department of Neurology (Y.C.W., D.K.), Northwestern University Feinberg School of Medicine, Chicago, IL; Clinical Institute of Medical Genetics (A.M., B.P.), University Medical Center Ljubljana, Slovenia; Sorbonne Universités (J.C.-C., S.L., A.B.), UPMC Université Paris 6 UMR S 1127, Inserm U 1127, CNRS UMR 7225, Institut du Cerveau et de la Moelle épinière, ICM, Paris, France; Centre d'Investigation Clinique Pitié Neurosciences CIC-1422 (J.C.-C.), Paris, France; Machine Learning Technologies Group (O.L.), IBM Research-Haifa, Mount Carmel, Israel; Department of Neurology (G.D., G.K.), Kiel University, Germany; and Department of Biological Regulation (I.U.), Weizmann Institute of Science, Rehovot, Israel.
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Meike Kasten
From the School of Computer Science (R.S., D.A., H.S.), Tel Aviv University, Israel; Institute of Neurogenetics (C.K., E.-J.V., H.P., M.K.), University of Lübeck, Germany; Department of Psychiatry and Psychotherapy (E.-J.V., M.K.), University of Lübeck, Germany; Institute of Medical Genetics and Applied Genomics (M.B., S.P., O.R.), University of Tübingen, Germany; IMGM Laboratories GmbH (M.B.), Martinsried, Germany; Mediterranean Institute for Life Sciences (M.U.), Split, Croatia; Department of Neurology (Y.C.W., D.K.), Northwestern University Feinberg School of Medicine, Chicago, IL; Clinical Institute of Medical Genetics (A.M., B.P.), University Medical Center Ljubljana, Slovenia; Sorbonne Universités (J.C.-C., S.L., A.B.), UPMC Université Paris 6 UMR S 1127, Inserm U 1127, CNRS UMR 7225, Institut du Cerveau et de la Moelle épinière, ICM, Paris, France; Centre d'Investigation Clinique Pitié Neurosciences CIC-1422 (J.C.-C.), Paris, France; Machine Learning Technologies Group (O.L.), IBM Research-Haifa, Mount Carmel, Israel; Department of Neurology (G.D., G.K.), Kiel University, Germany; and Department of Biological Regulation (I.U.), Weizmann Institute of Science, Rehovot, Israel.
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Olaf Riess
From the School of Computer Science (R.S., D.A., H.S.), Tel Aviv University, Israel; Institute of Neurogenetics (C.K., E.-J.V., H.P., M.K.), University of Lübeck, Germany; Department of Psychiatry and Psychotherapy (E.-J.V., M.K.), University of Lübeck, Germany; Institute of Medical Genetics and Applied Genomics (M.B., S.P., O.R.), University of Tübingen, Germany; IMGM Laboratories GmbH (M.B.), Martinsried, Germany; Mediterranean Institute for Life Sciences (M.U.), Split, Croatia; Department of Neurology (Y.C.W., D.K.), Northwestern University Feinberg School of Medicine, Chicago, IL; Clinical Institute of Medical Genetics (A.M., B.P.), University Medical Center Ljubljana, Slovenia; Sorbonne Universités (J.C.-C., S.L., A.B.), UPMC Université Paris 6 UMR S 1127, Inserm U 1127, CNRS UMR 7225, Institut du Cerveau et de la Moelle épinière, ICM, Paris, France; Centre d'Investigation Clinique Pitié Neurosciences CIC-1422 (J.C.-C.), Paris, France; Machine Learning Technologies Group (O.L.), IBM Research-Haifa, Mount Carmel, Israel; Department of Neurology (G.D., G.K.), Kiel University, Germany; and Department of Biological Regulation (I.U.), Weizmann Institute of Science, Rehovot, Israel.
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Alexis Brice
From the School of Computer Science (R.S., D.A., H.S.), Tel Aviv University, Israel; Institute of Neurogenetics (C.K., E.-J.V., H.P., M.K.), University of Lübeck, Germany; Department of Psychiatry and Psychotherapy (E.-J.V., M.K.), University of Lübeck, Germany; Institute of Medical Genetics and Applied Genomics (M.B., S.P., O.R.), University of Tübingen, Germany; IMGM Laboratories GmbH (M.B.), Martinsried, Germany; Mediterranean Institute for Life Sciences (M.U.), Split, Croatia; Department of Neurology (Y.C.W., D.K.), Northwestern University Feinberg School of Medicine, Chicago, IL; Clinical Institute of Medical Genetics (A.M., B.P.), University Medical Center Ljubljana, Slovenia; Sorbonne Universités (J.C.-C., S.L., A.B.), UPMC Université Paris 6 UMR S 1127, Inserm U 1127, CNRS UMR 7225, Institut du Cerveau et de la Moelle épinière, ICM, Paris, France; Centre d'Investigation Clinique Pitié Neurosciences CIC-1422 (J.C.-C.), Paris, France; Machine Learning Technologies Group (O.L.), IBM Research-Haifa, Mount Carmel, Israel; Department of Neurology (G.D., G.K.), Kiel University, Germany; and Department of Biological Regulation (I.U.), Weizmann Institute of Science, Rehovot, Israel.
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Borut Peterlin
From the School of Computer Science (R.S., D.A., H.S.), Tel Aviv University, Israel; Institute of Neurogenetics (C.K., E.-J.V., H.P., M.K.), University of Lübeck, Germany; Department of Psychiatry and Psychotherapy (E.-J.V., M.K.), University of Lübeck, Germany; Institute of Medical Genetics and Applied Genomics (M.B., S.P., O.R.), University of Tübingen, Germany; IMGM Laboratories GmbH (M.B.), Martinsried, Germany; Mediterranean Institute for Life Sciences (M.U.), Split, Croatia; Department of Neurology (Y.C.W., D.K.), Northwestern University Feinberg School of Medicine, Chicago, IL; Clinical Institute of Medical Genetics (A.M., B.P.), University Medical Center Ljubljana, Slovenia; Sorbonne Universités (J.C.-C., S.L., A.B.), UPMC Université Paris 6 UMR S 1127, Inserm U 1127, CNRS UMR 7225, Institut du Cerveau et de la Moelle épinière, ICM, Paris, France; Centre d'Investigation Clinique Pitié Neurosciences CIC-1422 (J.C.-C.), Paris, France; Machine Learning Technologies Group (O.L.), IBM Research-Haifa, Mount Carmel, Israel; Department of Neurology (G.D., G.K.), Kiel University, Germany; and Department of Biological Regulation (I.U.), Weizmann Institute of Science, Rehovot, Israel.
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Dimitri Krainc
From the School of Computer Science (R.S., D.A., H.S.), Tel Aviv University, Israel; Institute of Neurogenetics (C.K., E.-J.V., H.P., M.K.), University of Lübeck, Germany; Department of Psychiatry and Psychotherapy (E.-J.V., M.K.), University of Lübeck, Germany; Institute of Medical Genetics and Applied Genomics (M.B., S.P., O.R.), University of Tübingen, Germany; IMGM Laboratories GmbH (M.B.), Martinsried, Germany; Mediterranean Institute for Life Sciences (M.U.), Split, Croatia; Department of Neurology (Y.C.W., D.K.), Northwestern University Feinberg School of Medicine, Chicago, IL; Clinical Institute of Medical Genetics (A.M., B.P.), University Medical Center Ljubljana, Slovenia; Sorbonne Universités (J.C.-C., S.L., A.B.), UPMC Université Paris 6 UMR S 1127, Inserm U 1127, CNRS UMR 7225, Institut du Cerveau et de la Moelle épinière, ICM, Paris, France; Centre d'Investigation Clinique Pitié Neurosciences CIC-1422 (J.C.-C.), Paris, France; Machine Learning Technologies Group (O.L.), IBM Research-Haifa, Mount Carmel, Israel; Department of Neurology (G.D., G.K.), Kiel University, Germany; and Department of Biological Regulation (I.U.), Weizmann Institute of Science, Rehovot, Israel.
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Citation
Analysis of blood-based gene expression in idiopathic Parkinson disease
Ron Shamir, Christine Klein, David Amar, Eva-Juliane Vollstedt, Michael Bonin, Marija Usenovic, Yvette C. Wong, Ales Maver, Sven Poths, Hershel Safer, Jean-Christophe Corvol, Suzanne Lesage, Ofer Lavi, Günther Deuschl, Gregor Kuhlenbaeumer, Heike Pawlack, Igor Ulitsky, Meike Kasten, Olaf Riess, Alexis Brice, Borut Peterlin, Dimitri Krainc
Neurology Oct 2017, 89 (16) 1676-1683; DOI: 10.1212/WNL.0000000000004516

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Abstract

Objective: To examine whether gene expression analysis of a large-scale Parkinson disease (PD) patient cohort produces a robust blood-based PD gene signature compared to previous studies that have used relatively small cohorts (≤220 samples).

Methods: Whole-blood gene expression profiles were collected from a total of 523 individuals. After preprocessing, the data contained 486 gene profiles (n = 205 PD, n = 233 controls, n = 48 other neurodegenerative diseases) that were partitioned into training, validation, and independent test cohorts to identify and validate a gene signature. Batch-effect reduction and cross-validation were performed to ensure signature reliability. Finally, functional and pathway enrichment analyses were applied to the signature to identify PD-associated gene networks.

Results: A gene signature of 100 probes that mapped to 87 genes, corresponding to 64 upregulated and 23 downregulated genes differentiating between patients with idiopathic PD and controls, was identified with the training cohort and successfully replicated in both an independent validation cohort (area under the curve [AUC] = 0.79, p = 7.13E–6) and a subsequent independent test cohort (AUC = 0.74, p = 4.2E–4). Network analysis of the signature revealed gene enrichment in pathways, including metabolism, oxidation, and ubiquitination/proteasomal activity, and misregulation of mitochondria-localized genes, including downregulation of COX4I1, ATP5A1, and VDAC3.

Conclusions: We present a large-scale study of PD gene expression profiling. This work identifies a reliable blood-based PD signature and highlights the importance of large-scale patient cohorts in developing potential PD biomarkers.

GLOSSARY

CBD=
corticobasal degeneration;
fSVA=
frozen Surrogate Variable Analysis;
GO=
Gene Ontology;
IPD=
idiopathic Parkinson disease;
MSA=
multiple system atrophy;
NDD=
neurodegenerative disease;
PD=
Parkinson disease;
PDD=
Parkinson disease dementia;
PSMA7=
proteasome subunit alpha 7;
PSP=
progressive supranuclear palsy

Footnotes

  • ↵* These authors contributed equally to this work as first authors.

  • ↵† These authors contributed equally to this work as senior authors.

  • 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 February 3, 2017.
  • Accepted in final form July 23, 2017.
  • © 2017 American Academy of Neurology
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