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1. SARS-CoV-2 rapid antigen testing in the healthcare sector: A clinical prediction model for identifying false negative results

Author

Johannes Leiner, MD, Vincent Pellissier, PhD, Anne Nitsche, PhD, Sebastian König, MD, Sven Hohenstein, PhD, Irit Nachtigall, MD, Gerhard Hindricks, MD, Christoph Kutschker, MD, Boris Rolinski, MD, Julian Gebauer, MD, Anja Prantz, MD, Joerg Schubert, MDPhD, Joerg Patzschke, MD, Andreas Bollmann, MDPhD, and Martin Wolz, MD

Subjects
SARS-CoV-2, COVID-19, rapid antigen test, false negative, prediction models, healthcare, Infectious and parasitic diseases, RC109-216
Abstract

Objectives: SARS-CoV-2 rapid antigen tests (RAT) provide fast identification of infectious patients when RT-PCR results are not immediately available. We aimed to develop a prediction model for identification of false negative (FN) RAT results. Methods: In this multicenter trial, patients with documented paired results of RAT and RT-PCR between October 1st 2020 and January 31st 2021 were retrospectively analyzed regarding clinical findings. Variables included demographics, laboratory values and specific symptoms. Three different models were evaluated using Bayesian logistic regression. Results: The initial dataset contained 4,076 patients. Overall sensitivity and specificity of RAT was 62.3% and 97.6%. 2,997 cases with negative RAT results (FN: 120; true negative: 2,877; reference: RT-PCR) underwent further evaluation after removal of cases with missing data. The best-performing model for predicting FN RAT results containing 10 variables yielded an area under the curve of 0.971. Sensitivity, specificity, PPV and NPV for 0.09 as cut-off value (probability for FN RAT) were 0.85, 0.99, 0.7 and 0.99. Conclusion: FN RAT results can be accurately identified through ten routinely available variables. Implementation of a prediction model in addition to RAT testing in clinical care can provide decision guidance for initiating appropriate hygiene measures and therefore helps avoiding nosocomial infections.

Published
2021
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2. Functional MAOB Gene Intron 13 Polymorphism Predicts Dyskinesia in Parkinson’s Disease

Author

Matthias Löhle, Graziella Mangone, Wiebke Hermann, Denise Hausbrand, Martin Wolz, Julia Mende, Heinz Reichmann, Andreas Hermann, Jean-Christophe Corvol, and Alexander Storch

Subjects
Neurology. Diseases of the nervous system, RC346-429
Abstract

Identification of individual risk factors for motor complications in Parkinson’s disease (PD) can help to guide personalised medical treatment, particularly since treatment options are still limited. To determine whether common functional gene polymorphisms in the dopamine metabolism predict the onset of motor complications in PD, we performed a retrospective, observer-blinded follow-up study of 30 PD patients who underwent genotyping of dopa-decarboxylase (DDC; rs921451), monoamine oxidase B (MAOB; rs1799836), catechol-O-methyltransferase (COMT; rs4680), and dopamine transporter (DAT; variable number tandem repeat) polymorphisms. Onset of wearing-off and dyskinesias was determined by blinded clinical assessments. Predictive values of genotypes for motor complications were evaluated using Cox proportional hazard models. During a median follow-up time of 11.6 years, 23 (77%) of 30 PD patients developed wearing-off, 16 (53%) dyskinesias, and 23 (77%) any motor complication. The MAOB (rs1799836) polymorphism predicted development of dyskinesias with MAOBCC/(C)/CT genotypes (resulting in low/intermediate brain enzyme activity) being associated with lower hazard ratios (unadjusted HR [95% CI]: 0.264 [0.089–0.787]; p=0.012; adjusted HR [95% CI]: 0.142 [0.039–0.520]; p=0.003) than MAOBTT/(T) genotypes (resulting in high brain enzyme activity). DDC (rs921451), COMT (rs4680), and DAT (VNTR) polymorphisms were not predictive of motor complications. Together, the MAOB (rs1799836) polymorphism predicts the development of dyskinesias in PD patients. Our results need confirmation in larger cohorts. If confirmed, individual assessment of this polymorphism might be helpful for early risk stratification and could comprise a step towards patient-tailored therapeutic strategies to prevent or delay motor complications in the course of PD.

Published
2022
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3. Subthalamic nucleus stimulation and levodopa modulate cardiovascular autonomic function in Parkinson’s disease

Author

Kai Li, Rocco Haase, Heinz Rüdiger, Manja Reimann, Heinz Reichmann, Martin Wolz, and Tjalf Ziemssen

Subjects
Medicine, Science
Abstract

Abstract We aimed to explore the effects of bilateral subthalamic nucleus stimulation and levodopa on cardiovascular autonomic function in Parkinson’s disease. Twenty-six Parkinson’s disease patients with bilateral subthalamic nucleus stimulation in a stable state were tested under stimulation off and dopaminergic medication off (OFF-OFF), stimulation on and dopaminergic medication off (ON-OFF), and stimulation on and medication (levodopa) on (ON-ON) conditions by recording continuously blood pressure, ECG, and respiration at rest, during metronomic deep breathing, and head-up tilt test. Thirteen patients were diagnosed as orthostatic hypotension by head-up tilt test. Baroreflex sensitivity and spectral analyses were performed by trigonometric regressive spectral analysis. Subthalamic nucleus stimulation and levodopa had multiple influences. (1) Systolic blood pressure during tilt-up was reduced by subthalamic nucleus stimulation, and then further by levodopa. (2) Subthalamic nucleus stimulation and levodopa had different effects on sympathetic and parasympathetic regulations in Parkinson’s disease. (3) Levodopa decreased baroreflex sensitivity and RR interval only in the orthostatic hypotension group, and had opposite effects on the non-orthostatic hypotension group. These findings indicate that subthalamic nucleus stimulation and levodopa have different effects on cardiovascular autonomic function in Parkinson’s disease, which are modulated by the presence of orthostatic hypotension as well.

Published
2017
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4. Impairment in Respiratory Function Contributes to Olfactory Impairment in Amyotrophic Lateral Sclerosis

Author

René Günther, Wiebke Schrempf, Antje Hähner, Thomas Hummel, Martin Wolz, Alexander Storch, and Andreas Hermann

Subjects
amyotrophic lateral sclerosis, olfaction, hyposmia, sniffing, vital capacity, respiratory function, Neurology. Diseases of the nervous system, RC346-429
Abstract

BackgroundNonmotor symptoms are very common in neurodegenerative diseases. In patients suffering from amyotrophic lateral sclerosis (ALS), olfactory dysfunction was first reported more than 20 years ago; however, its pathophysiological correlates and further implications remain elusive.MethodsIn this so far largest case–control study, we analyzed olfactory performance with the “Sniffin’ Sticks,” a validated olfactory testing kit used in clinical routine. This test kit was designed to investigate different qualities of olfaction including odor threshold, odor discrimination, and odor identification.ResultsALS patients were mildly but significantly impaired in TDI score, the composite of the three subtests (ALS 27.7 ± 7.9, Controls 32.3 ± 5.8). In contrast to Parkinson’s disease, ALS patients did not show impaired performance in the suprathreshold tests identification and discrimination. However, the odor threshold was markedly decreased (ALS 6.0 ± 3.4, Controls 8.77 ± 3.6). This pattern of olfactory loss resembles sinonasal diseases, where olfactory dysfunction results from impeded odorant transmission to the olfactory cleft. The evaluation of medical history and clinical data of ALS patients showed that patients with perception of dyspnea (TDI 25.7 ± 8.0) performed significantly worse in olfactory testing compared to those who did not (TDI 30.0 ± 7.4). In line with that, we found that in patients with preserved respiratory function (vital capacity >70% of index value), olfactory performance did not differ from healthy controls.ConclusionThese findings suggest that the mild impairment of olfaction in patients suffering from ALS should at least partly be considered as a consequence of impaired respiratory function, and odor threshold might be a marker of respiratory dysfunction in ALS.

Published
2018
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5. Olfactory training in patients with Parkinson's disease.

Author

Antje Haehner, Clara Tosch, Martin Wolz, Lisa Klingelhoefer, Mareike Fauser, Alexander Storch, Heinz Reichmann, and Thomas Hummel

Subjects
Medicine, Science
Abstract

OBJECTIVE: Decrease of olfactory function in Parkinson's disease (PD) is a well-investigated fact. Studies indicate that pharmacological treatment of PD fails to restore olfactory function in PD patients. The aim of this investigation was whether patients with PD would benefit from "training" with odors in terms of an improvement of their general olfactory function. It has been hypothesized that olfactory training should produce both an improved sensitivity towards the odors used in the training process and an overall increase of olfactory function. METHODS: We recruited 70 subjects with PD and olfactory loss into this single-center, prospective, controlled non-blinded study. Thirty-five patients were assigned to the olfactory training group and 35 subjects to the control group (no training). Olfactory training was performed over a period of 12 weeks while patients exposed themselves twice daily to four odors (phenyl ethyl alcohol: rose, eucalyptol: eucalyptus, citronellal: lemon, and eugenol: cloves). Olfactory testing was performed before and after training using the "Sniffin' Sticks" (thresholds for phenyl ethyl alcohol, tests for odor discrimination, and odor identification) in addition to threshold tests for the odors used in the training process. RESULTS: Compared to baseline, trained PD patients experienced a significant increase in their olfactory function, which was observed for the Sniffin' Sticks test score and for thresholds for the odors used in the training process. Olfactory function was unchanged in PD patients who did not perform olfactory training. CONCLUSION: The present results indicate that olfactory training may increase olfactory sensitivity in PD patients.

Published
2013
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6. Morbidity Milestones Demonstrate Long Disability‐Free Survival in Parkinson's Disease Patients with Deep Brain Stimulation of the Subthalamic Nucleus

Author

Nils Schnalke, Agni Konitsioti, Anika Frank, Martin Kurz, Witold H. Polanski, Peter Themann, Martin Wolz, Stephan B. Sobottka, Heinz Reichmann, Bjoern Falkenburger, and Lisa Klingelhoefer

Subjects
Neurology, Neurology (clinical), ddc:610
Abstract

Deep brain stimulation of the subthalamic nucleus (STN-DBS) is an effective treatment for Parkinson's disease (PD). The long-term benefit in PD patients with STN-DBS in comparison to medical treatment (MT) alone has not yet been demonstrated conclusively.ObjectivesTo judge the long-term outcome of patients with STN-DBS.MethodsTo assess the evolution of PD symptoms and health-related quality of life (HRQoL) after deep brain stimulation (DBS) surgery, we conducted a cross-sectional analysis of 115 patients with STN-DBS with rater-based scales and self-reported questionnaires. In addition, we screened records of all our STN-DBS patients (2001–2019, n = 162 patients) for the onset of the morbidity milestones (falls, hallucinations, dementia, and nursing home placement) to assess disability-free life expectancy.ResultsIn the first year of STN-DBS, levodopa equivalent dose was reduced and motor function improved. Nonmotor symptoms and cognition remained stable. These effects were similar to previous studies. Morbidity milestones occurred 13 ± 7 years after diagnosis. Motor function, cognition, and HRQoL significantly worsened after the occurrence of any milestone, confirming the clinical relevance of these milestones. After onset of the first milestone, mean survival time was limited to 5 ± 0.8 years, which is comparable with patients with PD but without STN-DBS.ConclusionsOn average, PD patients with STN-DBS live with their disease for a longer time, and morbidity milestones occur later in the disease course than in PD patients with MT. As judged by morbidity milestones, morbidity remains compressed into the final 5 years of life in PD patients with STN-DBS.

Published
2023
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7. Significance of clinical symptoms and red flags in early differential diagnosis of Parkinson's disease and atypical Parkinsonian syndromes

Author

Nils Schröter, Thilo van Eimeren, Joseph Classen, Johannes Levin, Christoph Redecker, Martin Wolz, and Lars Tönges

Subjects
PSP, diagnosis [Supranuclear Palsy, Progressive], Atypical Parkinson syndromes, CBS, Diagnosis, Differential, Psychiatry and Mental health, Neurology, diagnosis [Multiple System Atrophy], DLB, diagnosis [Parkinsonian Disorders], MSA, Humans, Neurology (clinical), ddc:610, Emblems and Insignia, diagnosis [Parkinson Disease], Biological Psychiatry
Abstract

The clinical presentation of Parkinson’s disease and atypical Parkinsonian syndromes is often heterogeneous. Additional diagnostic procedures including brain imaging and biomarker analyses can help to appreciate the various syndromes, but a precise clinical evaluation and differentiation is always necessary. To better assess the relevance of distinct clinical symptoms that arose within 1 year of disease manifestation and evaluate their indicative potential for an atypical Parkinsonian syndrome, we conducted a modified Delphi panel with seven movement disorder specialists. Five different topics with several clinical symptom items were discussed and consensus criteria were tested. This resulted in distinct symptom patterns for each atypical Parkinsonian syndrome showing the multitude of clinical involvement in each neurodegenerative disease. Strongly discriminating clinical signs were few and levels of indication were variable. A prospective validation of the assessments made is needed. This demonstrates that both clinical evaluation and elaborate additional diagnostic procedures are needed to achieve a high diagnostic standard.

Published
2023
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8. SARS-CoV-2 rapid antigen testing in the healthcare sector: A clinical prediction model for identifying false negative results

Author

Christoph Kutschker, Johannes Leiner, Boris Rolinski, Vincent Pellissier, Sebastian König, Irit Nachtigall, Joerg Schubert, Andreas Bollmann, Julian Gebauer, Martin Wolz, Joerg Patzschke, Sven Hohenstein, Anja Prantz, Anne Nitsche, and Gerhard Hindricks

Subjects
Health Care Sector, Infectious and parasitic diseases, RC109-216, COI, Cut-Off-Index, Health care, PPV, Positive predictive value, Medicine, rapid antigen test, Antigen testing, COVID-19, Coronavirus disease 2019, HIS, Hospital information system, RKI, Robert-Koch-Institute, Area under the curve, healthcare, false negative, General Medicine, Prognosis, PoC, Point-of-care, ICU, Intensive care unit, Infectious Diseases, Rapid antigen test, CRP, C-reactive protein, CT, Computed tomography, AST, Aspartate aminotransferase, FIA, Fluorescence-immunoassays, ML, Machine learning, Microbiology (medical), medicine.medical_specialty, Severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2), ROC, Receiver operating characteristic, TN, True negative, Sensitivity and Specificity, Article, WHO, World Health Organization, Internal medicine, Multicenter trial, Humans, NPV, Negative predictive value, Retrospective Studies, LDH, Lactate dehydrogenase, SARS-CoV-2, Severe acute respiratory syndrome coronavirus 2, Models, Statistical, business.industry, SARS-CoV-2, RAT, Rapid antigen test, COVID-19, prediction models, Bayes Theorem, BF, Bayes Factor, RT-PCR, Reverse transcription polymerase chain reaction, Ct, Cycle threshold, Missing data, FN, False negative, Standard F, Standard F COVID-19 Ag FIA (SD Biosensor Inc.), AUC, Receiver operating characteristic area under the curve, PCR, Polymerase chain reaction, business, Predictive modelling
Abstract

Objectives SARS-CoV-2 rapid antigen tests (RAT) provide fast identification of infectious patients when RT-PCR results are not immediately available. We aimed to develop a prediction model for identification of false negative (FN) RAT results. Methods In this multicenter trial, patients with documented paired results of RAT and RT-PCR between October 1st 2020 and January 31st 2021 were retrospectively analyzed regarding clinical findings. Variables included demographics, laboratory values and specific symptoms. Three different models were evaluated using Bayesian logistic regression. Results The initial dataset contained 4,076 patients. Overall sensitivity and specificity of RAT was 62.3% and 97.6%. 2,997 cases with negative RAT results (FN: 120; true negative: 2,877; reference: RT-PCR) underwent further evaluation after removal of cases with missing data. The best-performing model for predicting FN RAT results containing 10 variables yielded an area under the curve of 0.971. Sensitivity, specificity, PPV and NPV for 0.09 as cut-off value (probability for FN RAT) were 0.85, 0.99, 0.7 and 0.99. Conclusion FN RAT results can be accurately identified through ten routinely available variables. Implementation of a prediction model in addition to RAT testing in clinical care can provide a decision guidance for initiating appropriate hygiene measures and therefore helps avoiding nosocomial infections., Graphical abstract Image, graphical abstract

Published
2021

9. Parkinson Network Eastern Saxony (PANOS): Reaching Consensus for a Regional Intersectoral Integrated Care Concept for Patients with Parkinson’s Disease in the Region of Eastern Saxony, Germany

Author

Kai F. Loewenbrück, Doron B. Stein, Volker E. Amelung, Robert Bitterlich, Martin Brumme, Björn Falkenburger, Annekathrin Fehre, Tim Feige, Anika Frank, Carola Gißke, Claudia Helmert, Linda Kerkemeyer, Andreas Knapp, Caroline Lang, Annegret Leuner, Carina Lummer, Mirella M.N. Minkman, Gabriele Müller, Marlena van Munster, Hannes Schlieter, Peter Themann, Nick Zonneveld, and Martin Wolz

Subjects
Parkinson disease, consensus, integrated delivery of health care, patient monitoring, lcsh:R, lcsh:Medicine, clinical pathway, patient care team, ddc:610, telemedicine, Article, nervous system diseases, community networks
Abstract

As integrated care is recognized as crucial to meet the challenges of chronic conditions such as Parkinson&rsquo, s disease (PD), integrated care networks have emerged internationally and throughout Germany. One of these networks is the Parkinson Network Eastern Saxony (PANOS). PANOS aims to deliver timely and equal care to PD patients with a collaborative intersectoral structured care pathway. Additional components encompass personalized case management, an electronic health record, and communicative and educative measures. To reach an intersectoral consensus of the future collaboration in PANOS, a structured consensus process was conducted in three sequential workshops. Community-based physicians, PD specialists, therapists, scientists and representatives of regulatory authorities and statutory health insurances were asked to rate core pathway-elements and supporting technological, personal and communicative measures. For the majority of core elements/planned measures, a consensus was reached, defined as an agreement by &gt, 75% of participants. Additionally, six representatives from all partners involved in the network-design independently assessed PANOS based on the Development Model for Integrated Care (DMIC), a validated model addressing the comprehensiveness and maturity of integrated care concepts. The results show that PANOS is currently in an early maturation state but has the potential to comprehensively represent the DMIC if all planned activities are implemented successfully. Despite the favorable high level of consensus regarding the PANOS concept and despite its potential to become a balanced integrated care concept according to the DMIC, its full implementation remains a considerable challenge.

Published
2020
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10. Recommendations for Standards of Network Care for Patients with Parkinson’s Disease in Germany

Author

Carsten Buhmann, Tobias Warnecke, Martin Wolz, Reinhard Ehret, Michael Lorrain, Stefan Lorenzl, Carsten Eggers, Jochen Klucken, Lars Tönges, Tino Prell, Ingmar Wellach, and Frank Siebecker

Subjects
Telemedicine, Parkinson's disease, media_common.quotation_subject, lcsh:Medicine, Disease, Review, Motor symptoms, 03 medical and health sciences, 0302 clinical medicine, multimodal complex treatment, Nursing, Medizinische Fakultät, day clinic, Medicine, Quality (business), 030212 general & internal medicine, ddc:610, advanced care planning, media_common, business.industry, lcsh:R, Disease progression, General Medicine, medicine.disease, Integrated care, networks, telemedicine, business, Limited resources, 030217 neurology & neurosurgery
Abstract

Although our understanding of Parkinson’s disease (PD) has improved and effective treatments are available, caring for people with PD remains a challenge. The large heterogeneity in terms of motor symptoms, nonmotor symptoms, and disease progression makes tailored individual therapy and individual timing of treatment necessary. On the other hand, only limited resources are available for a growing number of patients, and the high quality of treatment cannot be guaranteed across the board. At this point, networks can help to make better use of resources and improve care. The working group PD Networks and Integrated Care, part of the German Parkinson Society, is entrusted to convene clinicians, therapists, nurses, researchers, and patients to promote the development of PD networks. This article summarizes the work carried out by the working group PD Networks and Integrated Care in the development of standards of network care for patients with PD in Germany.

Published
2020

11. Olfactory dysfunction correlates with putaminal dopamine turnover in early de novo Parkinson’s disease

Author

Martin Wolz, Jörg Kotzerke, Jörg van den Hoff, Liane Oehme, Heinz Reichmann, Matthias Löhle, Alexander Storch, and Bettina Beuthien-Baumann

Subjects
Male, 0301 basic medicine, Olfactory system, physiopathology [Olfaction Disorders], Neurology, Parkinson's disease, Dopamine, Dopamine Agents, Disease, Cohort Studies, Olfaction Disorders, 0302 clinical medicine, diagnostic imaging [Parkinson Disease], metabolism [Dopamine], diagnosis [Olfaction Disorders], pharmacokinetics [Dopamine Agents], Putamen, Dopaminergic, Parkinson Disease, Middle Aged, Dihydroxyphenylalanine, Psychiatry and Mental health, etiology [Olfaction Disorders], metabolism [Putamen], Female, physiopathology [Parkinson Disease], complications [Parkinson Disease], medicine.drug, medicine.medical_specialty, diagnostic imaging [Putamen], metabolism [Parkinson Disease], Olfaction, 03 medical and health sciences, Internal medicine, medicine, Humans, ddc:610, Biological Psychiatry, Aged, business.industry, pharmacokinetics [Dihydroxyphenylalanine], medicine.disease, 030104 developmental biology, Endocrinology, Positron-Emission Tomography, analogs & derivatives [Dihydroxyphenylalanine], Neurology (clinical), business, 030217 neurology & neurosurgery
Abstract

Although olfactory dysfunction is one of the most well-established prodromal symptoms in Parkinson's disease (PD), its correlation with clinical disease progression or dopaminergic dysfunction still remains unclear. We here evaluated the association of striatal dopamine metabolism and olfactory function in a homogenous cohort of 30 patients with early untreated de novo PD. Striatal dopamine metabolism was assessed by the extended 18Fluorodopa PET scanning protocol to measure 18Fluorodopa uptake (Kocc) and the effective dopamine distribution volume ratio (EDVR) as the inverse of dopamine turnover. Olfactory function was estimated by the 'Sniffin' Sticks' test including odor threshold (T), discrimination (D) and identification (I) assessment. We detected moderate correlations of the EDVR in the posterior putamen with the TDI composite score (r = 0.412; p = 0.024; Pearson's correlation test) and the odor identification score (r = 0.444; p = 0.014). These correlations were confirmed by multivariate regression analyses using age, sex, symptom duration and disease severity as measured by UPDRSIII motor score as candidate covariates. No other associations were observed between olfaction measures and Kocc and EDVR in all striatal regions. Together, olfactory dysfunction in early PD is not correlated with striatal 18Fluorodopa uptake as a measure for dopaminergic degeneration, but with putaminal dopamine turnover as a marker for dopaminergic presynaptic compensatory processes in early PD. These results should be treated as hypothesis generating and require confirmation by larger multicenter studies.

Published
2020
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12. Identification of genetic variants associated with Huntington's disease progression

Author

Davina J Hensman Moss, Antonio F Pardiñas, Douglas Langbehn, Kitty Lo, Blair R Leavitt, Raymund Roos, Alexandra Durr, Simon Mead, Peter Holmans, Lesley Jones, Sarah J Tabrizi, A Coleman, R Dar Santos, J Decolongon, A Sturrock, E Bardinet, C Jauff Ret, D Justo, S Lehericy, C Marelli, K Nigaud, R Valabrègue, SJA van den Bogaard, E M Dumas, J van der Grond, EP t'Hart, C Jurgens, M-N Witjes-Ane, N Arran, J Callaghan, C Stopford, C Frost, R Jones, N Hobbs, N Lahiri, R Ordidge, G Owen, T Pepple, J Read, M Say, E Wild, A Patel, N C Fox, C Gibbard, I Malone, H Crawford, D Whitehead, S Keenan, D M Cash, C Berna, N Bechtel, S Bohlen, A Hoff Man, P Kraus, E Axelson, C Wang, T Acharya, S Lee, W Monaco, C Campbell, S Queller, K Whitlock, M Campbell, E Frajman, C Milchman, A O'Regan, I Labuschagne, J Stout, B Landwehrmeyer, D Craufurd, R Scahill, S Hicks, C Kennard, H Johnson, A Tobin, HD Rosas, R Reilmann, B Borowsky, C Pourchot, S C Andrews, Anne-Catherine Bachoud-Lévi, Anna Rita Bentivoglio, Ida Biunno, Raphael Bonelli, Jean-Marc Burgunder, Stephen Dunnett, Joaquim Ferreira, Olivia Handley, Arvid Heiberg, Torsten Illmann, G. Bernhard Landwehrmeyer, Jamie Levey, Maria A. Ramos-Arroyo, Jørgen Nielsen, Susana Pro Koivisto, Markku Päivärinta, Raymund A.C. Roos, A Rojo Sebastián, Sarah Tabrizi, Wim Vandenberghe, Christine Verellen-Dumoulin, Tereza Uhrova, Jan Wahlström, Jacek Zaremba, Verena Baake, Katrin Barth, Monica Bascuñana Garde, Sabrina Betz, Reineke Bos, Jenny Callaghan, Adrien Come, Leonor Correia Guedes, Daniel Ecker, Ana Maria Finisterra, Ruth Fullam, Mette Gilling, Lena Gustafsson, Olivia J Handley, Carina Hvalstedt, Christine Held, Kerstin Koppers, Claudia Lamanna, Matilde Laurà, Asunción Martínez Descals, Saül Martinez-Horta, Tiago Mestre, Sara Minster, Daniela Monza, Lisanne Mütze, Martin Oehmen, Michael Orth, Hélène Padieu, Laurent Paterski, Nadia Peppa, Martina Di Renzo, Amandine Rialland, Niini Røren, Pavla Šašinková, Erika Timewell, Jenny Townhill, Patricia Trigo Cubillo, Wildson Vieira da Silva, Marleen R van Walsem, Carina Whalstedt, Marie-Noelle Witjes-Ané, Grzegorz Witkowski, Abigail Wright, Daniel Zielonka, Eugeniusz Zielonka, Paola Zinzi, Raphael M. Bonelli, Sabine Lilek, Karen Hecht, Brigitte Herranhof, Anna Holl, Hans-Peter Kapfhammer, Michael Koppitz, Markus Magnet, Nicole Müller, Daniela Otti, Annamaria Painold, Karin Reisinger, Monika Scheibl, Helmut Schöggl, Jasmin Ullah, Eva-Maria Braunwarth, Florian Brugger, Lisa Buratti, Eva-Maria Hametner, Caroline Hepperger, Christiane Holas, Anna Hotter, Anna Hussl, Christoph Müller, Werner Poewe, Klaus Seppi, Fabienne Sprenger, Gregor Wenning, Andrea Boogaerts, Godelinde Calmeyn, Isabelle Delvaux, Dirk Liessens, Nele Somers, Michel Dupuit, Cécile Minet, Dominique van Paemel, Pascale Ribaï, Dimphna van Reijen, Jirí Klempír, Veronika Majerová, Jan Roth, Irena Stárková, Lena E. Hjermind, Oda Jacobsen, Jørgen E. Nielsen, Ida Unmack Larsen, Tua Vinther-Jensen, Heli Hiivola, Hannele Hyppönen, Kirsti Martikainen, Katri Tuuha, Philippe Allain, Dominique Bonneau, Marie Bost, Bénédicte Gohier, Marie-Anne Guérid, Audrey Olivier, Adriana Prundean, Clarisse Scherer-Gagou, Christophe Verny, Blandine Babiloni, Sabrina Debruxelles, Charlotte Duché, Cyril Goizet, Laetitia Jameau, Danielle Lafoucrière, Umberto Spampinato, Rekha Barthélémy, Christelle De Bruycker, Maryline Cabaret Anne-Sophie Carette, Eric Decorte Luc Defebvre, Marie Delliaux, Arnaud Delval, Alain Destee, Kathy Dujardin, Marie-Hélène Lemaire, Sylvie Manouvrier, Mireille Peter, Lucie Plomhouse, Bernard Sablonnière, Clémence Simonin, Stéphanie Thibault-Tanchou, Isabelle Vuillaume, Marcellin Bellonet, Hassan Berrissoul, Stéphanie Blin, Françoise Courtin, Cécile Duru, Véronique Fasquel, Olivier Godefroy, Pierre Krystkowiak, Béatrice Mantaux, Martine Roussel, Sandrine Wannepain, Jean-Philippe Azulay, Marie Delfini, Alexandre Eusebio, Frédérique Fluchere, Laura Mundler, Mathieu Anheim, Celine Julié, Ouhaid Lagha Boukbiza, Nadine Longato, Gabrielle Rudolf, Christine Tranchant, Marie-Agathe Zimmermann, Christoph Michael Kosinski, Eva Milkereit, Daniela Probst, Kathrin Reetz, Christian Sass, Johannes Schiefer, Christiane Schlangen, Cornelius J. Werner, Harald Gelderblom, Josef Priller, Harald Prüß, Eike Jakob Spruth, Gisa Ellrichmann, Lennard Herrmann, Rainer Hoffmann, Barbara Kaminski, Peter Kotz, Christian Prehn, Carsten Saft, Herwig Lange, Robert Maiwald, Matthias Löhle, Antonia Maass, Simone Schmidt, Cecile Bosredon, Alexander Storch, Annett Wolz, Martin Wolz, Philipp Capetian, Johann Lambeck, Birgit Zucker, Kai Boelmans, Christos Ganos, Walburgis Heinicke, Ute Hidding, Jan Lewerenz, Alexander Münchau, Jenny Schmalfeld, Lars Stubbe, Simone Zittel, Gabriele Diercks, Dirk Dressler, Heike Gorzolla, Christoph Schrader, Pawel Tacik, Michael Ribbat, Bernhard Longinus, Katrin Bürk, Jens Carsten Möller, Ida Rissling, Mark Mühlau, Alexander Peinemann, Michael Städtler, Adolf Weindl, Juliane Winkelmann, Cornelia Ziegler, Natalie Bechtel, Heike Beckmann, Stefan Bohlen, Eva Hölzner, Ralf Reilmann, Stefanie Rohm, Silke Rumpf, Sigrun Schepers, Natalia Weber, Matthias Dose, Gabriele Leythäuser, Ralf Marquard, Tina Raab, Alexandra Wiedemann, Andrea Buck, Julia Connemann, Carolin Geitner, Andrea Kesse, Bernhard Landwehrmeyer, Christina Lang, Franziska Lezius, Solveig Nepper, Anke Niess, Ariane Schneider, Daniela Schwenk, Sigurd Süßmuth, Sonja Trautmann, Patrick Weydt, Claudia Cormio, Vittorio Sciruicchio, Claudia Serpino, Marina de Tommaso, Sabina Capellari, Pietro Cortelli, Roberto Galassi, Giovanni Rizzo, Roberto Poda, Cesa Scaglione, Elisabetta Bertini, Elena Ghelli, Andrea Ginestroni, Francesca Massaro, Claudia Mechi, Marco Paganini, Silvia Piacentini, Silvia Pradella, Anna Maria Romoli, Sandro Sorbi, Giovanni Abbruzzese, Monica Bandettini di Poggio, Giovanna Ferrandes, Paola Mandich, Roberta Marchese, Alberto Albanese, Daniela Di Bella, Anna Castaldo, Stefano Di Donato, Cinzia Gellera, Silvia Genitrini, Caterina Mariotti, Lorenzo Nanetti, Dominga Paridi, Paola Soliveri, Chiara Tomasello, Giuseppe De Michele, Luigi Di Maio, Marco Massarelli, Silvio Peluso, Alessandro Roca, Cinzia Valeria Russo, Elena Salvatore, Pierpaolo Sorrentino, Enrico Amico, Mariagrazia Favellato, Annamaria Griguoli, Irene Mazzante, Martina Petrollini, Ferdinando Squitieri, Barbara D'Alessio, Chiara Esposito, Rita Bentivoglio, Marina Frontali, Arianna Guidubaldi, Tamara Ialongo, Gioia Jacopini, Carla Piano, Silvia Romano, Francesco Soleti, Maria Spadaro, Monique S.E. van Hout, Marloes E. Verhoeven, Jeroen P.P. van Vugt, A. Marit de Weert, J.J.W. Bolwijn, M. Dekker, B. Kremer, K.L. Leenders, J.C.H. van Oostrom, Simon J.A. van den Bogaard, Eve M. Dumas, Ellen P. 't Hart, Berry Kremer, C.C.P. Verstappen, Olaf Aaserud, Jan Frich C, Ragnhild Wehus, Kathrine Bjørgo, Madeleine Fannemel, Per F. 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P., Aaserud, Olaf, Jan Frich, C., Wehus, Ragnhild, Bjã¸rgo, Kathrine, Fannemel, Madeleine, Gã¸rvell, Per F., Lorentzen, Eirin, Retterstã¸l, Lar, Stokke, Bodil, Bjã¸rnevoll, Inga, Sando, Sigrid Botne, Dziadkiewicz, Artur, Nowak, Malgorzata, Robowski, Piotr, Sitek, Emilia, Slawek, Jaroslaw, Soltan, Witold, Szinwelski, Michal, Blaszcyk, Magdalena, Boczarska-Jedynak, Magdalena, Ciach-Wysocka, Ewelina, Gorzkowska, Agnieszka, Jasinska-Myga, Barbara, Klodowska-Duda, Gabriela, Opala, Gregorz, Stompel, Daniel, Banaszkiewicz, Krzysztof, Bocwinska, Dorota, Bojakowska-Jaremek, Kamila, Dec, Malgorzata, Krawczyk, Malgorzata, Rudzinska, Monika, Szczygiel, Elzbieta, Szczudlik, Andrzej, Wasielewska, Anna, Wã³jcik, Magdalena, Bryl, Anna, Ciesielska, Anna, Klimberg, Aneta, Marcinkowski, Jerzy, Samara, Husam, Sempolowicz, Justyna, Gogol, Anna, Janik, Piotr, Kwiecinski, Hubert, Jamrozik, Zygmunt, Antczak, Jakub, Jachinska, Katarzyna, Krysa, Wioletta, Rakowicz, Maryla, Richter, Przemyslaw, Rola, Rafal, Ryglewicz, Danuta, Sienkiewicz-Jarosz, Halina, Stepniak, Iwona, Sulek, Anna, Zdzienicka, Elzbieta, Zieora-Jakutowicz, Karolina, Ferreira, Joaquim J, Coelho, Miguel, Mendes, Tiago, Valadas, Anabela, Andrade, Carlo, Gago, Miguel, Garrett, Carolina, Guerra, Maria Rosália, Herrera, Carmen Durán, Garcia, Patrocinio Moreno, Barbera, Miquel Aguilar, Guia, Dolors Badene, Hernanz, Laura Casa, Catena, Judit López, Ferrer, Pilar Quiléz, Sebastiã¡n, Ana Rojo, Carruesco, Gemma Tome, Bas, Jordi, Busquets, Nãºria, Calopa, Matilde, Robert, Misericordia Floriach, Viladrich, Celia Mareca, Idiago, Jesús Miguel Ruiz, Riballo, Antonio Villa, Cubo, Esther, Polo, Cecilia Gil, Mariscal, Natividad, Rivadeneyra, Perez Jessica, Barrero, Francisco, Morales, Bla, Fenollar, Marã­a, Garcã­a, Rocío García-Ramo, Ortega, Paloma, Villanueva, Clara, Alegre, Javier, Bascuã±ana, Mã³nica, Caldentey, Juan Garcia, Ventura, Marta Fatá, Ribas, Guillermo García, de Yébenes, Justo García, Moreno, José Luis López-Sendón, Frech, Fernando Alonso, Ruã­z, Pedro J. García, Martínez-Descals, Asunciã³n, Guerrero, Rosa, Artiga, María José Saiz, Sã¡nchez, Vicenta, Perea, María Fuensanta Noguera, Fortuna, Lorenza, Manzanares, Salvadora, Reinante, Gema, Torres, María Martirio Antequera, Moreau, Laura Vivanco, González González, Sonia, Guisasola, Luis Menéndez, Salvador, Carlo, Martã­n, Esther Suaréz San, Ramirez, Inés Legarda, Gorospe, Aranzazãº, Lopera, Mónica Rodriguez, Arques, Penelope Nava, Rodrã­guez, María José Torre, Pastor, Barbara Vive, Gaston, Itziar, Martinez-Jaurrieta, Maria Dolore, Moreno, Jose Manuel Garcia, Lucena, Carolina Mendez, Damas, Fatima, Cortegana, Hermoso Eva Pacheco, Peã±a, José Chacón, Redondo, Lui, Carrillo, Fã¡tima, Teresa Cáceres, Marã­a, Mir, Pablo, Suarez, María José Lama, Vargas-González, Laura, Bosca, Maria E., Brugada, Francisco Castera, Burguera, Juan Andre, Campos, Anabel, Vilaplana, Garcia Carmen Peiró, Berglund, Peter, Constantinescu, Radu, Fredlund, Gunnel, Høsterey-Ugander, Ulrika, Linnsand, Petra, Neleborn-Lingefjärd, Liselotte, Wentzel, Magnu, Loutfi, Ghada, Olofsson, Carina, Stattin, Eva-Lena, Westman, Laila, Wikstrã¶m, Birgitta, Stebler, Yanik, Kaelin, Alain, Romero, Irene, Schã¼pbach, Michael, Weber Zaugg, Sabine, Hauer, Maria, Gonzenbach, Roman, Jung, Hans H., Mihaylova, Violeta, Petersen, Jen, Jack, Roisin, Matheson, Kirsty, Miedzybrodzka, Zosia, Rae, Daniela, Simpson, Sheila A, Summers, Fiona, Ure, Alexandra, Vaughan, Vivien, Akhtar, Shahbana, Crooks, Jenny, Curtis, Adrienne, de Souza, Jenny, Piedad, John, Rickards, Hugh, Wright, Jan, Coulthard, Elizabeth, Gethin, Louise, Hayward, Beverley, Sieradzan, Kasia, Armstrong, Matthew, Barker, Roger A., O'Keefe, Deidre, Di Pietro, Anna, Fisher, Kate, Goodman, Anna, Hill, Susan, Kershaw, Ann, Mason, Sarah, Paterson, Nicole, Raymond, Lucy, Swain, Rachel, Guzman, Natalie Valle, Busse, Monica, Butcher, Cynthia, Clenaghan, Catherine, Hunt, Sarah, Jones, Una, Khalil, Hanan, Owen, Michael, Price, Kathleen, Rosser, Anne, Edwards, Maureen, Carrie, Ho, Hughes, Teresa, Mcgill, Marie, Pearson, Pauline, Porteous, Mary, Smith, Paul, Brockie, Peter, Foster, Jillian, Johns, Nicola, Mckenzie, Sue, Rothery, Jean, Thomas, Gareth, Yates, Shona, Burrows, Liz, Chu, Carol, Fletcher, Amy, Gallantrae, Deena, Hamer, Stephanie, Harding, Alison, Klã¶ppel, Stefan, Kraus, Alison, Laver, Fiona, Lewis, Monica, Longthorpe, Mandy, Markova, Ivana, Raman, Ashok, Robertson, Nicola, Silva, Mark, Thomson, Aileen, Wild, Sue, Yardumian, Pam, Evans, Carole, Gallentrae, Deena, Hobson, Emma, Jamieson, Stuart, Musgrave, Hannah, Rowett, Liz, Toscano, Jean, Bourne, Colin, Clapton, Jackie, Clayton, Carole, Dipple, Heather, Freire-Patino, Dawn, Grant, Janet, Gross, Diana, Hallam, Caroline, Middleton, Julia, Murch, Ann, Thompson, Catherine, Alusi, Sundu, Davies, Rhy, Foy, Kevin, Gerrans, Emily, Pate, Louise, Andrews, Thomasin, Dougherty, Andrew, Golding, Charlotte, Kavalier, Fred, Laing, Hana, Lashwood, Alison, Robertson, Dene, Ruddy, Deborah, Santhouse, Alastair, Whaite, Anna, Bruno, Stefania, Doherty, Karen, Haider, Salman, Hensman, Davina, Lahiri, Nayana, Novak, Marianne, Patel, Aakta, Rosser, Elisabeth, Taylor, Rachel, Warner, Thoma, Wild, Edward, Arran, Natalie, Bek, Judith, Craufurd, David, Hare, Marianne, Howard, Liz, Huson, Susan, Johnson, Liz, Jones, Mary, Murphy, Helen, Oughton, Emma, Partington-Jones, Lucy, Rogers, Dawn, Sollom, Andrea, Snowden, Julie, Stopford, Cheryl, Thompson, Jennifer, Trender-Gerhard, Iri, Verstraelen, Nichola, Westmoreland, Leann, Armstrong, Richard, Dixon, Kathryn, Nemeth, Andrea H, Siuda, Gill, Valentine, Ruth, David, Harrison, Hughes, Max, Parkinson, Andrew, Soltysiak, Beverley, Bandmann, Oliver, Bradbury, Alyson, Gill, Paul, Fairtlough, Helen, Fillingham, Kay, Foustanos, Isabella, Kazoka, Mbombe, O'Donovan, Kirsty, Taylor, Cat, Tidswell, Katherine, Quarrell, Oliver, Lau, Puay Ngoh, Pica, Emmanul, Tan, Louis, Amsterdam Neuroscience - Neurodegeneration, Neurology, Biologie Neurovasculaire et Mitochondriale Intégrée (BNMI), Université d'Angers (UA)-Institut National de la Santé et de la Recherche Médicale (INSERM)-Centre National de la Recherche Scientifique (CNRS), Moss, Davina J Hensman, Lo, Kitty, Pardiñas, Antonio F, Santos, R Dar, Ret, C Jauff, Valabrègue, R., Witjes-Ane, M. -N., Man, A Hoff, Bachoud-Lévi, Anne-Catherine, Nielsen, Jørgen, Päivärinta, Markku, Sebastián, A Rojo, Wahlström, Jan, Garde, Monica Bascuñana, Laurà, Matilde, Descals, Asunción Martínez, Martinez-Horta, Saül, Mütze, Lisanne, Padieu, Hélène, Røren, Niini, Šašinková, Pavla, Witjes-Ané, Marie-Noelle, Müller, Nicole, Schöggl, Helmut, Müller, Christoph, Minet, Cécile, Ribaï, Pascale, Klempír, Jirí, Majerová, Veronika, Stárková, Irena, Nielsen, Jørgen E., Hyppönen, Hannele, Gohier, Bénédicte, Guérid, Marie-Anne, Duché, Charlotte, Lafoucrière, Danielle, Barthélémy, Rekha, Lemaire, Marie-Hélène, Sablonnière, Bernard, Simonin, Clémence, Thibault-Tanchou, Stéphanie, Blin, Stéphanie, Courtin, Françoise, Duru, Cécile, Fasquel, Véronique, Mantaux, Béatrice, Fluchere, Frédérique, Julié, Celine, Prüß, Harald, Löhle, Matthia, Münchau, Alexander, Bürk, Katrin, Möller, Jens Carsten, Mühlau, Mark, Städtler, Michael, Hölzner, Eva, Leythäuser, Gabriele, Süßmuth, Sigurd, Marchese, Roberta, DI MAIO, Luigi, ’t Hart, Ellen P., Bjørgo, Kathrine, Gørvell, Per F., Retterstøl, Lar, Bjørnevoll, Inga, Wójcik, Magdalena, Guerra, Maria Rosália, Herrera, Carmen Durán, Catena, Judit López, Ferrer, Pilar Quiléz, Sebastián, Ana Rojo, Busquets, Núria, Idiago, Jesús Miguel Ruiz, Fenollar, María, García, Rocío García-Ramo, Bascuñana, Mónica, Ventura, Marta Fatá, Ribas, Guillermo García, de Yébenes, Justo García, Moreno, José Luis López-Sendón, Ruíz, Pedro J García, Martínez-Descals, Asunción, Artiga, María José Saiz, Sánchez, Vicenta, Perea, María Fuensanta Noguera, Torres, María Martirio Antequera, González González, Sonia, Guisasola, Luis Menéndez, Martín, Esther Suaréz San, Ramirez, Inés Legarda, Gorospe, Aranzazú, Lopera, Mónica Rodriguez, Rodríguez, María José Torre, Peña, José Chacón, Carrillo, Fátima, Teresa Cáceres, María, Suarez, María José Lama, Vargas-González, Laura, Vilaplana, Garcia Carmen Peiró, Høsterey-Ugander, Ulrika, Neleborn-Lingefjärd, Liselotte, Wikström, Birgitta, Schüpbach, Michael, Ho, Carrie, Klöppel, Stefan, Harrison, David, Cardiff University, University of Iowa [Iowa City], University of British Columbia (UBC), CHU Pitié-Salpêtrière [AP-HP], Assistance publique - Hôpitaux de Paris (AP-HP) (AP-HP)-Sorbonne Université (SU), UCL, Institute of Neurology [London], National Oceanography Centre [Southampton] (NOC), University of Southampton, Center for NeuroImaging Research-Human MRI Neuroimaging core facility for clinical research [ICM Paris] (CENIR), Institut du Cerveau = Paris Brain Institute (ICM), Assistance publique - Hôpitaux de Paris (AP-HP) (AP-HP)-Institut National de la Santé et de la Recherche Médicale (INSERM)-CHU Pitié-Salpêtrière [AP-HP], Assistance publique - Hôpitaux de Paris (AP-HP) (AP-HP)-Sorbonne Université (SU)-Sorbonne Université (SU)-Sorbonne Université (SU)-Centre National de la Recherche Scientifique (CNRS)-Assistance publique - Hôpitaux de Paris (AP-HP) (AP-HP)-Institut National de la Santé et de la Recherche Médicale (INSERM)-CHU Pitié-Salpêtrière [AP-HP], Assistance publique - Hôpitaux de Paris (AP-HP) (AP-HP)-Sorbonne Université (SU)-Sorbonne Université (SU)-Sorbonne Université (SU)-Centre National de la Recherche Scientifique (CNRS), IFR de Neuroimagerie Fonctionnelle (IFR 49), Commissariat à l'énergie atomique et aux énergies alternatives (CEA), Centre Hospitalier Régional Universitaire [Montpellier] (CHRU Montpellier), CHU Amiens-Picardie, Laboratoire de Neurosciences Fonctionnelles et Pathologies - UR UPJV 4559 (LNFP), Université de Picardie Jules Verne (UPJV), CHirurgie, IMagerie et REgénération tissulaire de l’extrémité céphalique - Caractérisation morphologique et fonctionnelle - UR UPJV 7516 (CHIMERE), TRACK-HD investigators, Pardinas, Antonio F, Langbehn, Douglas, Lee, S Hong, TRACK-HD Investigators, and REGISTRY Investigators

Subjects
0301 basic medicine, Oncology, Registrie, Genome-wide association study, Longitudinal Studie, Disease, Bioinformatics, Severity of Illness Index, Principal Component Analysi, Longitudinal Studies, Registries, [SDV.MHEP] Life Sciences [q-bio]/Human health and pathology, Huntington disease, DNA-Binding Proteins, Settore MED/26 - NEUROLOGIA, Adult, Genome-Wide Association Study, Humans, Huntington Disease, MutS Homolog 3 Protein, Principal Component Analysis, Disease Progression, Neurology (clinical), huntingtin gene, age of onest, Huntington’s disease, Human, medicine.medical_specialty, cag repeat, instability, DNA-Binding Protein, Clinical Neurology, Principal component analysis, Single-nucleotide polymorphism, Biology, 03 medical and health sciences, Huntington's disease, Internal medicine, medicine, SNP, genome-wide association study, medicine.disease, R1, meta-analysis, Minor allele frequency, 030104 developmental biology, Age of onset, Trinucleotide repeat expansion, [SDV.MHEP]Life Sciences [q-bio]/Human health and pathology
Abstract

Background Huntington's disease is caused by a CAG repeat expansion in the huntingtin gene, HTT. Age at onset has been used as a quantitative phenotype in genetic analysis looking for Huntington's disease modifiers, but is hard to define and not always available. Therefore, we aimed to generate a novel measure of disease progression and to identify genetic markers associated with this progression measure. Methods We generated a progression score on the basis of principal component analysis of prospectively acquired longitudinal changes in motor, cognitive, and imaging measures in the 218 indivduals in the TRACK-HD cohort of Huntington's disease gene mutation carriers (data collected 2008–11). We generated a parallel progression score using data from 1773 previously genotyped participants from the European Huntington's Disease Network REGISTRY study of Huntington's disease mutation carriers (data collected 2003–13). We did a genome-wide association analyses in terms of progression for 216 TRACK-HD participants and 1773 REGISTRY participants, then a meta-analysis of these results was undertaken. Findings Longitudinal motor, cognitive, and imaging scores were correlated with each other in TRACK-HD participants, justifying use of a single, cross-domain measure of disease progression in both studies. The TRACK-HD and REGISTRY progression measures were correlated with each other (r=0·674), and with age at onset (TRACK-HD, r=0·315; REGISTRY, r=0·234). The meta-analysis of progression in TRACK-HD and REGISTRY gave a genome-wide significant signal (p=1·12 × 10−10) on chromosome 5 spanning three genes: MSH3, DHFR, and MTRNR2L2. The genes in this locus were associated with progression in TRACK-HD (MSH3 p=2·94 × 10−8 DHFR p=8·37 × 10−7 MTRNR2L2 p=2·15 × 10−9) and to a lesser extent in REGISTRY (MSH3 p=9·36 × 10−4 DHFR p=8·45 × 10−4 MTRNR2L2 p=1·20 × 10−3). The lead single nucleotide polymorphism (SNP) in TRACK-HD (rs557874766) was genome-wide significant in the meta-analysis (p=1·58 × 10−8), and encodes an aminoacid change (Pro67Ala) in MSH3. In TRACK-HD, each copy of the minor allele at this SNP was associated with a 0·4 units per year (95% CI 0·16–0·66) reduction in the rate of change of the Unified Huntington's Disease Rating Scale (UHDRS) Total Motor Score, and a reduction of 0·12 units per year (95% CI 0·06–0·18) in the rate of change of UHDRS Total Functional Capacity score. These associations remained significant after adjusting for age of onset. Interpretation The multidomain progression measure in TRACK-HD was associated with a functional variant that was genome-wide significant in our meta-analysis. The association in only 216 participants implies that the progression measure is a sensitive reflection of disease burden, that the effect size at this locus is large, or both. Knockout of Msh3 reduces somatic expansion in Huntington's disease mouse models, suggesting this mechanism as an area for future therapeutic investigation. Funding The European Commission FP7 NeurOmics project; CHDI Foundation; the Medical Research Council UK; the Brain Research Trust; and the Guarantors of Brain.

Published
2017
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13. Levodopa-carbidopa intestinal gel in advanced Parkinson's: Final results of the GLORIA registry

Author

Lacramioara Perju-Dumbrava, Lars Bergmann, Anjum Misbahuddin, Francesc Valldeoriola, Stephen Wørlich Pedersen, Chris van der Linden, Stephan Bohlhalter, Erik H. Danielsen, David, Maurizio Zibetti, Björn Hauptmann, Oriol De Fabregues, Ashley Yegin, Martin Nevrly, K. Ray Chaudhuri, Jeff Blackie, M.M. Ponsen, Christoph Redecker, Anne Jeanjean, Kenn Freddy Pedersen, Jan Kassubek, Mihaela Simu, Philippe Busson, Barbara A. Pickut, Pierre R. Burkhard, József Attila Szász, Per Odin, Bogdan Ovidiu Popescu, Ene Amalia, Angelo Antonini, Robert Jech, Thomas E. Kimber, Matthias Bode, Kari Anne Bjørnarå, Ivan Milanov, Bruno Bergmans, Espen Dietrichs, Luc Defebvre, Christofer Lundqvist, Jesper Clausen, Michaela Kaiserová, Valérie Delvaux, Werner Poewe, Martin Wolz, Sophie Dethy, Jaime Kulisevsky, Cleanthe Spanaki, Anette Storstein, Michel Rijntjes, F. Ory Magne, Pietro Marano, T. van Laar, Tove Henriksen, Christian Winkler, Ovidiu Bajenaru, Spyridon Konitsiotis, Michel Van Zandijcke, Ransmayr Gerhard, F. Viallet, Koray Onuk, Guy Arnold, Kirsten Hahn, Jo Leenders, Mariachiara Sensi, Jorge Hernández-Vara, Zikos Panayiotis, Nicola Modugno, Volker Tomantschger, Matilde Calopa, Zvezdan Pirtošek, Paul Bourgeois, Graziano Gusmaroli, Christoph Schrader, Ioan Buraga, Víctor Puente, Rejko Krüger, Alexander Storch, Tatiana Witjas, UCL - SSS/IONS/NEUR - Clinical Neuroscience, UCL - (SLuc) Service de neurologie, GLORIA study co-investigators, and Movement Disorder (MD)

Subjects
0301 basic medicine, Male, Parkinson's disease, Neurology, Routine patient care, Levodopa-carbidopa intestinal gel, Motor symptoms, Non-motor symptoms, Antiparkinson Agents, Levodopa, 0302 clinical medicine, Quality of life, Gériatrie - gérontologie, Medicine, Registries, Parkinson Disease/drug therapy, Intubation, Gastrointestinal, Carbidopa/administration & dosage, Carbidopa, Parkinson Disease, Middle Aged, Safety profile, Drug Combinations, Female, medicine.symptom, Gastrointestinal, medicine.medical_specialty, Levodopa/administration & dosage, 03 medical and health sciences, Rating scale, Internal medicine, Neurologie, Antiparkinson Agents/administration & dosage, Humans, Aged, business.industry, medicine.disease, nervous system diseases, ddc:616.8, 030104 developmental biology, Mood, Dyskinesia, Levodopa carbidopa, Physical therapy, Geriatrics and Gerontology, Neurology (clinical), Human medicine, Intubation, business, Gels, 030217 neurology & neurosurgery
Abstract

Introduction This registry evaluated the 24-month safety and efficacy of levodopa-carbidopa intestinal gel (LCIG) treatment in advanced Parkinson's disease (PD) patients under routine clinical care. Methods Motor fluctuations, dyskinesia, non-motor symptoms, quality of life, and safety were evaluated. Observations were fully prospective for treatment-naïve patients (60% of patients) and partially retrospective for patients with ≤12 months of pre-treatment with LCIG (40% of patients). Hours of “On” and “Off” time were assessed with a modified version of the Unified Parkinson's Disease Rating Scale part IV items 32 and 39. Results Overall, 375 patients were enrolled by 75 movement disorder centers in 18 countries and 258 patients completed the registry. At 24 months LCIG treatment led to significant reductions from baseline in “Off” time (hours/day) (mean ± SD = −4.1 ± 3.5, P < 0.001), “On” time with dyskinesia (hours/day) (−1.1 ± 4.8, P = 0.006), Non-Motor Symptom Scale total (−16.7 ± 43.2, P < 0.001) and individual domains scores, and Parkinson's Disease Questionnaire-8 item total score (−7.1 ± 21.0, P < 0.001). Adverse events deemed to have a possible/probable causal relationship to treatment drug/device were reported in 194 (54%) patients; the most frequently reported were decreased weight (6.7%), device related infections (5.9%), device dislocations (4.8%), device issues (4.8%), and polyneuropathy (4.5%). Conclusions LCIG treatment led to sustained improvements in motor fluctuations, non-motor symptoms particularly sleep/fatigue, mood/cognition and gastrointestinal domains, as well as quality of life in advanced PD patients over 24 months. Safety events were consistent with the established safety profile of LCIG., 0, SCOPUS: ar.j, info:eu-repo/semantics/published

Published
2017
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14. Nonmotor fluctuations in Parkinson disease: severity and correlation with motor complications

Author

K. Ray Chaudhuri, G. Fuchs, Wolfgang H. Jost, Per Odin, Martin Wolz, Rainer Koch, Yannic Stürwald, Georg Ebersbach, Angelika Nebe, Heinz Reichmann, Alexander Storch, Christine Schneider, and Andreas Mahler

Subjects
Male, medicine.medical_specialty, Movement disorders, Neurology, Visual analogue scale, Physical examination, Motor Activity, Severity of Illness Index, Physical medicine and rehabilitation, Severity of illness, medicine, Humans, ddc:610, Depression (differential diagnoses), Aged, Aged, 80 and over, Movement Disorders, medicine.diagnostic_test, Mental Disorders, etiology [Movement Disorders], physiopathology [Movement Disorders], Parkinson Disease, Middle Aged, Dysphagia, Cross-Sectional Studies, physiology [Motor Activity], Physical therapy, physiopathology [Mental Disorders], Anxiety, Female, Neurology (clinical), physiopathology [Parkinson Disease], medicine.symptom, complications [Parkinson Disease], Psychology, etiology [Mental Disorders]
Abstract

OBJECTIVE: To evaluate frequency, severity, and correlation of nonmotor symptoms (NMS) with motor complications in fluctuating Parkinson disease (PD). METHODS: The Multicenter NonMotor Fluctuations in PD cross-sectional study used clinical examination of 10 NMS (dysphagia, anxiety, depression, fatigue, excessive sweating, inner restlessness, pain, concentration/attention, dizziness, bladder urgency) quantified using a visual analogue scale (VAS) in motor-defined on (NMS(On)) and off state (NMS(Off)) combined with motor assessments and self-ratings at home in 100 patients with advanced PD. RESULTS: All NMS except dysphagia, excessive sweating, and bladder urgency fluctuated in conjunction to motor fluctuations with more frequent and severe symptoms in off compared to on state. The proportions of patients experiencing autonomic/sensory NMS in both motor states were similar to those with these NMS exclusively in off state (ratios 0.4-1.3), while for mental/psychic NMS the proportions with exclusive manifestation in off state were higher (ratios 1.8-3.1). Demographic and clinical characteristics correlated neither with NMS frequency patterns and severities nor with ΔNMS(On/Off) severities (defined as the differences of VAS scores between on and off). Severities of NMS(on), NMS(Off), and ΔNMS(On/Off) did not correlate with motor function. Presence of anxiety, depression, fatigue, and pain had negative impact on health-related quality of life (HRQOL) measured by Parkinson's Disease Questionnaire-8 scoring independent of their occurrence with respect to motor state. Fluctuations of these NMS but not of fatigue deteriorated HRQOL. CONCLUSION: Patterns of NMS fluctuations are heterogeneous and complex, but psychic NMS fluctuate more frequently and severely. Demographic parameters and motor function do not correlate with NMS or nonmotor fluctuation severities in fluctuating PD.

Published
2013
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15. Effects of dopaminergic treatment on striatal dopamine turnover in de novo Parkinson disease

Author

Heinz Reichmann, B. Herting, Liane Oehme, Martin Wolz, Jörg Kotzerke, Xina Grählert, Uta Schwanebeck, Bettina Beuthien-Baumann, Maria Perick, Alexander Storch, Matthias Löhle, and Jörg van den Hoff

Subjects
Male, drug effects [Corpus Striatum], Dopamine, therapeutic use [Dopamine Agonists], law.invention, Antiparkinson Agents, Levodopa, Randomized controlled trial, law, Medicine, Single-Blind Method, metabolism [Dopamine], Prospective Studies, pharmacology [Levodopa], Prospective cohort study, Aged, 80 and over, Dopaminergic, Parkinson Disease, Middle Aged, pharmacology [Ergolines], pharmacology [Dopamine Agonists], Treatment Outcome, Dopamine Agonists, Female, diagnosis [Parkinson Disease], medicine.drug, Agonist, Adult, medicine.medical_specialty, Cabergoline, medicine.drug_class, Urology, metabolism [Parkinson Disease], therapeutic use [Levodopa], Dopamine receptor D2, Humans, ddc:610, Ergolines, therapeutic use [Antiparkinson Agents], Aged, pharmacology [Antiparkinson Agents], business.industry, metabolism [Corpus Striatum], drug therapy [Parkinson Disease], Corpus Striatum, therapeutic use [Ergolines], Neurology (clinical), business
Abstract

Objective: To evaluate the effects of levodopa and the dopamine D2 agonist cabergoline on striatal dopamine turnover estimated as the inverse of the effective dopamine distribution volume ratio (EDVR) measured by 18 F-dopa PET in de novo Parkinson disease (PD). Methods: Single-center, parallel-group, randomized, observer-blinded study of cabergoline (3 mg/day) and levodopa (300 mg/day) over 12 weeks in patients with de novo PD. Primary efficacy measure was the change of the side-to-side averaged putaminal EDVR comparing baseline and end-of-maintenance period. Results: Thirty-five out of 39 randomized patients were assigned to the primary efficacy analysis (cabergoline, n = 17; levodopa, n = 18). At the end of treatment period, mean EDVRs were significantly lower compared to baseline solely in the levodopa group (relative change −1.0 ± 13.0% in cabergoline [ p = 0.525 when compared to baseline], −8.3 ± 11.8% in levodopa group [ p = 0.006]) with a nonsignificant trend between groups (mean relative difference: 7.3% (95% confidence interval −1.2% to 15.8%; p = 0.091). There was significant clinical improvement in both groups at 12 weeks compared to baseline, but no significant differences between groups in clinical and PET secondary outcome measures. Both pharmacologic treatments and PET scanning were well-tolerated and safe. Conclusion: Putaminal dopamine turnover is increased by levodopa treatment in de novo PD. The nonsignificant trend toward a larger influence by levodopa compared to cabergoline is supported by ancillary statistical analyses. This augmentation of early compensatory events by levodopa might contribute not only to its symptomatic effects, but also to its induction of motor complications.

Published
2013
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