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Keefe RSE, Woods SW, Cannon TD, Ruhrmann S, Mathalon DH, McGuire P, Rosenbrock H, Daniels K, Cotton D, Roy D, Pollentier S, Sand M. A randomized Phase II trial evaluating efficacy, safety, and tolerability of oral BI 409306 in attenuated psychosis syndrome: Design and rationale. Early Interv Psychiatry 2021; 15:1315-1325. [PMID: 33354862 PMCID: PMC8451588 DOI: 10.1111/eip.13083] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 06/28/2019] [Revised: 09/23/2020] [Accepted: 11/14/2020] [Indexed: 12/17/2022]
Abstract
AIM Attenuated psychosis syndrome (APS), a condition for further study in the Diagnostic and Statistical Manual of Mental Disorders-5, comprises psychotic symptoms that are qualitatively similar to those observed in schizophrenia but are less severe. Patients with APS are at high risk of converting to first-episode psychosis (FEP). As evidence for effective pharmacological interventions in APS is limited, novel treatments may provide symptomatic relief and delay/prevent psychotic conversion. This trial aims to investigate the efficacy, safety, and tolerability of BI 409306, a potent and selective phosphodiesterase-9 inhibitor, versus placebo in APS. Novel biomarkers of psychosis are being investigated. METHODS In this Phase II, multinational, double-blind, parallel-group trial, randomized (1:1) patients will receive BI 409306 50 mg or placebo twice daily for 52 weeks. Patients (n = 300) will be enrolled to determine time to remission of APS, time to FEP, change in everyday functional capacity (Schizophrenia Cognition Rating Scale), and change from baseline in Brief Assessment of Cognition composite score and Positive and Negative Syndrome Scale scores. Potential biomarkers of psychosis under investigation include functional measures of brain activity and automated speech analyses. Safety is being assessed throughout. CONCLUSIONS This trial will determine whether BI 409306 is superior to placebo in achieving sustainable remission of APS and improvements in cognition and functional capacity. These advances may provide evidence-based treatment options for symptomatic relief in APS. Furthermore, the study will assess the effect of BI 409306 on psychotic conversion and explore the identification of patients at risk for conversion using novel biomarkers.
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Affiliation(s)
- Richard S. E. Keefe
- Department of Psychiatry and Behavioral SciencesDuke UniversityDurhamNorth CarolinaUSA
- VeraSciDurhamNCUSA
| | - Scott W. Woods
- Department of PsychiatryYale UniversityNew HavenConnecticutUSA
| | - Tyrone D. Cannon
- Department of PsychiatryYale UniversityNew HavenConnecticutUSA
- Department of PsychologyYale UniversityNew HavenConnecticutUSA
| | - Stephan Ruhrmann
- Department of Psychiatry and PsychotherapyUniversity of CologneCologneGermany
| | - Daniel H. Mathalon
- Department of PsychologyUCSF School of MedicineSan FranciscoCaliforniaUSA
| | - Philip McGuire
- Department of Psychosis Studies, Institute of Psychiatry, Psychology and NeuroscienceKing's College LondonLondonUK
| | | | - Kristen Daniels
- Boehringer Ingelheim Pharmaceuticals Inc.RidgefieldConnecticutUSA
| | - Daniel Cotton
- Boehringer Ingelheim Pharmaceuticals Inc.RidgefieldConnecticutUSA
| | - Dooti Roy
- Boehringer Ingelheim Pharmaceuticals Inc.RidgefieldConnecticutUSA
| | | | - Michael Sand
- Boehringer Ingelheim Pharmaceuticals Inc.RidgefieldConnecticutUSA
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Miller DS, Robert P, Ereshefsky L, Adler L, Bateman D, Cummings J, DeKosky ST, Fischer CE, Husain M, Ismail Z, Jaeger J, Lerner AJ, Li A, Lyketsos CG, Manera V, Mintzer J, Moebius HJ, Mortby M, Meulien D, Pollentier S, Porsteinsson A, Rasmussen J, Rosenberg PB, Ruthirakuhan MT, Sano M, Zucchero Sarracini C, Lanctôt KL. Diagnostic criteria for apathy in neurocognitive disorders. Alzheimers Dement 2021; 17:1892-1904. [PMID: 33949763 PMCID: PMC8835377 DOI: 10.1002/alz.12358] [Citation(s) in RCA: 64] [Impact Index Per Article: 21.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/25/2020] [Revised: 03/26/2021] [Accepted: 04/05/2021] [Indexed: 11/12/2022]
Abstract
INTRODUCTION Apathy is common in neurocognitive disorders (NCD) but NCD-specific diagnostic criteria are needed. METHODS The International Society for CNS Clinical Trials Methodology Apathy Work Group convened an expert group and sought input from academia, health-care, industry, and regulatory bodies. A modified Delphi methodology was followed, and included an extensive literature review, two surveys, and two meetings at international conferences, culminating in a consensus meeting in 2019. RESULTS The final criteria reached consensus with more than 80% agreement on all parts and included: limited to people with NCD; symptoms persistent or frequently recurrent over at least 4 weeks, a change from the patient's usual behavior, and including one of the following: diminished initiative, diminished interest, or diminished emotional expression/responsiveness; causing significant functional impairment and not exclusively explained by other etiologies. DISCUSSION These criteria provide a framework for defining apathy as a unique clinical construct in NCD for diagnosis and further research.
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Affiliation(s)
| | - Philippe Robert
- Cognition Behaviour Technology Lab, Université Côte d'Azur, Nice, France.,Association Innovation Alzheimer, Nice, France.,Centre Memoire, Centre Hospitalier Universitaire de Nice, Nice, France
| | | | - Lawrence Adler
- Department of Psychiatry, University of Maryland School of Medicine, Baltimore, Maryland, USA
| | - Daniel Bateman
- Department of Psychiatry, Indiana University School of Medicine, Indianapolis, Indiana, USA
| | - Jeff Cummings
- Department of Brain Health, School of Integrated Health Sciences, University of Nevada, Las Vegas, Nevada, USA.,Cleveland Clinic Lou Ruvo Center for Brain Health, Las Vegas, Nevada, USA
| | - Steven T DeKosky
- Department of Neurology, McKnight Brain Institute, University of Florida, Gainesville, Florida, USA
| | - Corinne E Fischer
- Institute of Medical Science, University of Toronto, Toronto, Ontario, Canada.,Keenan Research Centre for Biomedical Research, Li Ka Shing Knowledge Institute, St. Michael's Hospital, Toronto, Ontario, Canada
| | - Masud Husain
- Department of Experimental Psychology, University of Oxford, Oxford, UK.,Nuffield Department of Clinical Neurosciences, University of Oxford, Oxford, UK.,Oxford NIHR Biomedical Research Centre, Oxford, UK
| | - Zahinoor Ismail
- Hotchkiss Brain Institute, University of Calgary, Calgary, Alberta, Canada
| | | | - Alan J Lerner
- University Hospitals - Case Western Reserve University, Cleveland, Ohio, USA
| | - Abby Li
- Sunnybrook Research Institute, Toronto, Ontario, Canada
| | | | - Valeria Manera
- Cognition Behaviour Technology Lab, Université Côte d'Azur, Nice, France.,Association Innovation Alzheimer, Nice, France
| | - Jacobo Mintzer
- Medical University of South Carolina and Ralph H. Johnson Veterans Administration Medical Center, Charleston, South Carolina, USA
| | | | - Moyra Mortby
- UNSW Ageing Futures Institute, The University of New South Wales, Sydney, Australia
| | - Didier Meulien
- Clinical Research and Development, H. Lundbeck A/S, Valby, Denmark
| | - Stephane Pollentier
- Boehringer Ingelheim Pharma GmbH & Co KG, CNS Diseases Research, Biberach an der Riss, Germany
| | | | | | | | | | - Mary Sano
- Alzheimer Disease Research Center, Department of Psychiatry, Icahn School of Medicine at Mount Sinai, New York, New York, USA
| | | | - Krista L Lanctôt
- Sunnybrook Research Institute, Toronto, Ontario, Canada.,Departments of Psychiatry and Pharmacology/Toxicology, University of Toronto, Toronto, Ontario, Canada
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Fleischhacker WW, Podhorna J, Gröschl M, Hake S, Zhao Y, Huang S, Keefe RSE, Desch M, Brenner R, Walling DP, Mantero-Atienza E, Nakagome K, Pollentier S. Efficacy and safety of the novel glycine transporter inhibitor BI 425809 once daily in patients with schizophrenia: a double-blind, randomised, placebo-controlled phase 2 study. Lancet Psychiatry 2021; 8:191-201. [PMID: 33610228 DOI: 10.1016/s2215-0366(20)30513-7] [Citation(s) in RCA: 46] [Impact Index Per Article: 15.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 07/30/2020] [Revised: 11/04/2020] [Accepted: 11/13/2020] [Indexed: 12/21/2022]
Abstract
BACKGROUND Cognitive impairment associated with schizophrenia predicts poor functional outcomes, but currently no approved pharmacotherapy is available. This study investigated whether the glycine transporter-1 inhibitor BI 425809 improves cognition in patients with schizophrenia. METHODS This phase 2, randomised, double-blind, placebo-controlled, parallel-group trial (81 centres, 11 countries), randomly assigned outpatients (aged 18-50 years) with schizophrenia on stable treatment to add-on once-daily oral BI 425809 2 mg, 5 mg, 10 mg, or 25 mg or placebo (1:1:1:1:2) for 12 weeks. Treatment was assigned in blocks using interactive response technology; patients, investigators, and all trial personnel were masked to group assignment. The primary endpoint was change from baseline in MATRICS Consensus Cognitive Battery (MCCB) overall composite T-score at week 12. Six predefined dose-response models were evaluated using a multiple comparison procedure and modelling approach with mixed model repeated measures to assess evidence for a non-flat dose-response relationship for cognitive improvements with BI 425809. Adverse events were monitored. Safety analyses included all randomly allocated patients who received one or more doses of trial medication; efficacy analyses included patients from this set who also had available baseline data and at least one post-baseline on-treatment measurement for the primary or secondary endpoint. This study is registered with ClinicalTrials.gov, number NCT02832037. FINDINGS 509 patients were randomly assigned between April 25, 2018, and Oct 4, 2019 (BI 425809 2 mg, n=85; 5 mg, n=84; 10 mg, n=85; 25 mg, n=85; placebo, n=170 444 (87%) completed the 12-week treatment. Five of six dose-response models showed a statistically significant benefit of BI 425809 over placebo (linear [t=2·55, p=0·015], linear in log [t=2·56, p=0·015]; Emax [t=2·75, p=0·0089], sigmoid Emax [t=2·98, p=0·0038], logistic [t=2·77, p=0·0085]). Pairwise comparisons showed greater mean improvement from baseline in MCCB overall composite T-score at week 12 with BI 425809 10 mg and 25 mg versus placebo (adjusted mean difference 1·98 [95% CI 0·43-3·53] for 10 mg and 1·73 [0·18-3·28] for 25 mg; standardised effect size 0·34 for 10 mg and 0·30 for 25 mg). Adverse events were balanced across groups, reported in 50 (59%) of 85 patients on BI 425809 2 mg, 44 (52%) of 84 on 5 mg, 35 (41%) of 85 on 10 mg, 36 (42%) of 85 on 25 mg, and 74 (44%) of 170 on placebo. INTERPRETATION BI 425809 improved cognition after 12 weeks in patients with schizophrenia; doses of 10 mg and 25 mg showed the largest separation from placebo. If these encouraging results are confirmed in phase 3 trials, BI 425809 could provide an effective treatment for cognitive impairment associated with schizophrenia. FUNDING Boehringer Ingelheim.
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Affiliation(s)
| | - Jana Podhorna
- Boehringer Ingelheim International GmbH, Ingelheim am Rhein, Germany.
| | | | | | - Yihua Zhao
- Boehringer Ingelheim Pharmaceuticals, Ridgefield, CT, USA
| | - Songqiao Huang
- Boehringer Ingelheim Pharmaceuticals, Ridgefield, CT, USA
| | - Richard S E Keefe
- Department of Psychiatry and Behavioral Sciences, Duke University, Durham, NC, USA; VeraSci, Durham, NC, USA
| | - Michael Desch
- Boehringer Ingelheim Pharma, Biberach an der Riss, Germany
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Wunderlich G, Blahova Z, Garcia M, Huang S, Pollentier S, Jessen F. Evaluation of the efficacy and safety of orally administered BI425809 during a 12‐week treatment period compared with placebo in patients with cognitive impairment due to Alzheimer’s disease. Alzheimers Dement 2020. [DOI: 10.1002/alz.044797] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
Affiliation(s)
| | | | - Miguel Garcia
- Boehringer Ingelheim Pharmaceuticals Inc. Ridgefield CT USA
| | - Songqiao Huang
- Boehringer Ingelheim Pharmaceuticals Inc Ridgefield CT USA
| | | | - Frank Jessen
- Klinik und Poliklinik für Psychiatrie und Psychotherapie Uniklinik Köln Köln Germany
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Porcelli S, Kasper S, Zohar J, Souery D, Montgomery S, Ferentinos P, Rujescu D, Mendlewicz J, Merlo Pich E, Pollentier S, Penninx BWJH, Serretti A. Social dysfunction in mood disorders and schizophrenia: Clinical modulators in four independent samples. Prog Neuropsychopharmacol Biol Psychiatry 2020; 99:109835. [PMID: 31836507 DOI: 10.1016/j.pnpbp.2019.109835] [Citation(s) in RCA: 23] [Impact Index Per Article: 5.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 07/23/2019] [Revised: 11/25/2019] [Accepted: 12/05/2019] [Indexed: 12/21/2022]
Abstract
INTRODUCTION Social dysfunction is a common symptom of several neuropsychiatric disorders. However, only in the last few years research began to systematically investigate clinical aspects of this relevant outcome. Interestingly, its distribution and link with other clinical variables is still unclear. This study investigated social dysfunction in 4 different cohorts of patients affected by mood disorders and schizophrenia to evaluate 1) the degree of social dysfunction in these populations; 2) the associations among social dysfunction and socio-demographic and psychopathological features. METHODS Data from 4 independent studies (CATIE, GSRD ES1, ES2 and ES3, STAR*D, STEP-BD) were investigated. Behavioural and affective indicators of social dysfunction were derived and operationalized from scales or questionnaire items related to the interaction with relatives, friends and significant people in patients affected by schizophrenia (N = 765) and mood disorders (N = 2278 + 1954 + 1829). In particular the social dysfunction indicator was derived from Sheehan Disability Scale (SDS) for GSRD sample, from the Work and Social Adjustment Scale (WSAS) for STAR*D sample, from the Life-Range of Impaired Functioning Tool (LRIFT) for STEP-BD sample, and from the Quality of Life Scale (QOLS) for CATIE sample. The distribution of social dysfunction was described and association with socio-demographic and psychopathological characteristics were analysed. RESULTS Social dysfunction indicators showed a broad distribution in all samples investigated. Consistently across studies, social dysfunction was associated with higher psychopathological severity (all samples except CATIE) and suicide risk (GSRD ES1 and ES2, STAR*D, and STEP-BD) that explain up to 47% of the variance, but also to lower education level (GSRD ES2, STAR*D, CATIE, and STEP-BD), poorer professional/work status (GSRD ES2 and ES3, STAR*D, CATIE, and STEP-BD), marital status (STAR*D and CATIE), age (younger age in GSRD ES1 and STAR*D, older age in CATIE), higher BMI (GSRD ES2 and ES3, and STEP-BD), and smoking (GSRD ES2 and ES3). CONCLUSION Our results demonstrated that a significant percentage of patients affected by both mood disorders and schizophrenia shows relevant social dysfunction. Social dysfunction is related, but not completely explained by psychopathological severity. In several patients, it tends to persist also during remission state. Socio-demographic and lifestyle factors were also found to play a role and should therefore be taken into consideration in further studies investigating social dysfunction.
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Affiliation(s)
- Stefano Porcelli
- Department of Biomedical and NeuroMotor Sciences, University of Bologna, Bologna, Italy.
| | - Siegfried Kasper
- Department of Psychiatry and Psychotherapy, Medical University Vienna, Austria
| | - Joseph Zohar
- Department of Psychiatry, Sheba Medical Center, Tel Hashomer, and Sackler School of Medicine, Tel Aviv University, Israel
| | - Daniel Souery
- Laboratoire de Psychologie Medicale, Universitè Libre de Bruxelles and Psy Pluriel, Centre Européen de Psychologie Medicale, Brussels, Belgium
| | | | | | - Dan Rujescu
- University Clinic for Psychiatry, Psychotherapy and Psychosomatic, Martin-Luther-University Halle-Wittenberg, Germany
| | | | - Emilio Merlo Pich
- Neuroscience Therapeutic Area Unit, Takeda Pharmaceutical International, Zurich, Switzerland; Imperial College School of Medicine, London, United Kingdom
| | - Stephane Pollentier
- Boehringer Ingelheim Pharma GmbH & Co KG, CNS Diseases Research, Biberach an der Riss, Germany
| | - Brenda W J H Penninx
- Department of Psychiatry, Amsterdam Neuroscience and Amsterdam Public Health Research Institute, Amsterdam UMC, Vrije Universiteit, Amsterdam, the Netherlands
| | - Alessandro Serretti
- Department of Biomedical and NeuroMotor Sciences, University of Bologna, Bologna, Italy
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Bilderbeck AC, Raslescu A, Hernaus D, Hayen A, Umbricht D, Pemberton D, Tiller J, Søgaard B, Sambeth A, van Amelsvoort T, Reif A, Papazisis G, Pérez V, Elices M, Maurice D, Bertaina-Anglade V, Dawson GR, Pollentier S. Optimizing Behavioral Paradigms to Facilitate Development of New Treatments for Anhedonia and Reward Processing Deficits in Schizophrenia and Major Depressive Disorder: Study Protocol. Front Psychiatry 2020; 11:536112. [PMID: 33250788 PMCID: PMC7674850 DOI: 10.3389/fpsyt.2020.536112] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 03/04/2020] [Accepted: 09/22/2020] [Indexed: 12/02/2022] Open
Abstract
Background: Behavioral tasks focusing on different subdomains of reward processing may provide more objective and quantifiable measures of anhedonia and impaired motivation compared with clinical scales. Typically, single tasks are used in relatively small studies to compare cases and controls in one indication, but they are rarely included in larger multisite trials. This is due to limited systematic standardization as well as the challenges of deployment in international studies and stringent adherence to the high regulatory requirements for data integrity. The Reward Task Optimization Consortium (RTOC) was formed to facilitate operational implementation of reward processing tasks, making them suitable for use in future large-scale, international, multisite drug development studies across multiple indications. The RTOC clinical study aims to conduct initial optimization of a set of tasks in patients with major depressive disorder (MDD) or schizophrenia (SZ). Methods: We will conduct a multicenter study across four EU countries. Participants (MDD = 37, SZ = 37, with ≤80 age- and gender-matched healthy volunteers) will attend a study visit comprising screening, self-report and clinically rated assessments of anhedonia and symptom severity, and three reward processing tasks; specifically, the Grip Strength Effort task, the Doors task, and the Reinforcement Learning Working Memory task. The Grip Strength Effort and Doors tasks include simultaneous electroencephalography/event-related potential recordings. Outcomes will be compared using a two-way group design of MDD and SZ with matched controls, respectively. Further analyses will include anhedonia assessment scores as covariates. Planned analyses will assess whether our findings replicate previously published data, and multisite deployment will be evaluated through assessments of quality and conduct. A subset of participants will complete a second visit, to assess test-retest reliability of the task battery. Discussion: This study will evaluate the operational deployment of three reward processing tasks to the regulatory standards required for use in drug development trials. We will explore the potential of these tasks to differentiate patients from controls and to provide a quantitative marker of anhedonia and/or impaired motivation, establishing their usefulness as endpoints in multisite clinical trials. This study should demonstrate where multifaceted reward deficits are similar or divergent across patient populations. Registration: ClinicalTrials.gov (NCT04024371).
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Affiliation(s)
| | | | - Dennis Hernaus
- School for Mental Health and Neuroscience, Maastricht University, Maastricht, Netherlands
| | - Anja Hayen
- P1vital Ltd, Wallingford, United Kingdom
| | | | | | - Jane Tiller
- BlackThorn Therapeutics, San Francisco, CA, United States
| | | | - Anke Sambeth
- School for Mental Health and Neuroscience, Maastricht University, Maastricht, Netherlands
| | - Therese van Amelsvoort
- School for Mental Health and Neuroscience, Maastricht University, Maastricht, Netherlands
| | - Andreas Reif
- Department of Psychiatry, Psychosomatic Medicine and Psychotherapy, University Hospital Frankfurt, Frankfurt, Germany
| | - Georgios Papazisis
- Department of Clinical Pharmacology, School of Medicine, Aristotle University of Thessaloniki, Thessaloniki, Greece
| | - Victor Pérez
- Institut de Neuropsiquiatria i Addiccions, Parc de Salut Mar, Barcelona, Spain.,Hospital del Mar Medical Research Institute (IMIM), Barcelona, Spain.,Departament de Psiquitria i Medicina Legal, Universitat Autònoma de Barcelona, Barcelona, Spain.,Centro de Investigación Biomédica en Red de Salud Mental (CIBERSAM), Madrid, Spain
| | - Matilde Elices
- Institut de Neuropsiquiatria i Addiccions, Parc de Salut Mar, Barcelona, Spain.,Hospital del Mar Medical Research Institute (IMIM), Barcelona, Spain.,Departament de Psiquitria i Medicina Legal, Universitat Autònoma de Barcelona, Barcelona, Spain.,Centro de Investigación Biomédica en Red de Salud Mental (CIBERSAM), Madrid, Spain
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Wunderlich GR, Evans KR, Sills T, Pollentier S, Reess J, Allen RP, Hening W, Walters AS. An item response analysis of the international restless legs syndrome study group rating scale for restless legs syndrome. Sleep Med 2005; 6:131-9. [PMID: 15799121 DOI: 10.1016/j.sleep.2004.10.010] [Citation(s) in RCA: 26] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 10/25/2022]
Abstract
BACKGROUND AND PURPOSE Restless legs syndrome (RLS) is a common central nervous system disorder; however, there is currently a lack of well-validated and easily-administered measures of RLS severity available. The International Restless Legs Syndrome Study Group has recently developed a 10-item scale to meet this need. The International Restless Legs Severity Scale (IRLS) has been shown to have a high degree of reliability, validity, and internal consistency. In order to further demonstrate the validity of the IRLS, the present study examined the relationship between scores on individual IRLS items and overall RLS severity. PATIENTS AND METHODS The 10-item IRLS was administered to 196 RLS patients. Option characteristic curves (the probability of scoring different options for a given item as a function of overall IRLS score) were generated in order to illustrate the scoring patterns for each item across the range of total RLS severity. Item characteristic curves (the expected score on an item as a function of overall IRLS score) were also generated to illustrate the relationship between scores on the individual items and total RLS severity. RESULTS The IRLS items demonstrated excellent item response properties, with option and item characteristic curves closely approximating those of an ideal item. Item 3 (relief of arm or leg discomfort from moving around) was the most problematic item in that a 'floor' effect was evident; however, the item response characteristics for this item were still acceptable. CONCLUSIONS Each IRLS item showed a good relationship between responses on that item and overall RLS severity, providing further evidence for the validity of the IRLS as a measure of RLS severity in RLS patients.
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Olesen J, Diener HC, Husstedt IW, Goadsby PJ, Hall D, Meier U, Pollentier S, Lesko LM. Calcitonin gene-related peptide receptor antagonist BIBN 4096 BS for the acute treatment of migraine. N Engl J Med 2004; 350:1104-10. [PMID: 15014183 DOI: 10.1056/nejmoa030505] [Citation(s) in RCA: 890] [Impact Index Per Article: 44.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 01/22/2023]
Abstract
BACKGROUND Calcitonin gene-related peptide (CGRP) may have a causative role in migraine. We therefore hypothesized that a CGRP-receptor antagonist might be effective in the treatment of migraine attacks. METHODS In an international, multicenter, double-blind, randomized clinical trial of BIBN 4096 BS, a highly specific and potent nonpeptide CGRP-receptor antagonist, 126 patients with migraine received one of the following: placebo or 0.25, 0.5, 1, 2.5, 5, or 10 mg of BIBN 4096 BS intravenously over a period of 10 minutes. A group-sequential adaptive treatment-assignment design was used to minimize the number of patients exposed. RESULTS The 2.5-mg dose was selected, with a response rate of 66 percent, as compared with 27 percent for placebo (P=0.001). The BIBN 4096 BS group as a whole had a response rate of 60 percent. Significant superiority over placebo was also observed with respect to most secondary end points: the pain-free rate at 2 hours; the rate of sustained response over a period of 24 hours; the rate of recurrence of headache; improvement in nausea, photophobia, phonophobia, and functional capacity; and the time to meaningful relief. An effect was apparent after 30 minutes and increased over the next few hours. The overall rate of adverse events was 25 percent after the 2.5-mg dose of the drug and 20 percent for the BIBN 4096 BS group as a whole, as compared with 12 percent for placebo. The most frequent side effect was paresthesia. There were no serious adverse events. CONCLUSIONS The CGRP antagonist BIBN 4096 BS was effective in treating acute attacks of migraine.
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Affiliation(s)
- Jes Olesen
- Department of Neurology, Glostrup Hospital, University of Copenhagen, Copenhagen, Denmark.
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Pogarell O, Gasser T, van Hilten JJ, Spieker S, Pollentier S, Meier D, Oertel WH. Pramipexole in patients with Parkinson's disease and marked drug resistant tremor: a randomised, double blind, placebo controlled multicentre study. J Neurol Neurosurg Psychiatry 2002; 72:713-20. [PMID: 12023411 PMCID: PMC1737934 DOI: 10.1136/jnnp.72.6.713] [Citation(s) in RCA: 116] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/04/2022]
Abstract
OBJECTIVE To compare the tremorlytic properties of pramipexole, a non-ergoline dopamine agonist to those of placebo as add on medication in patients with Parkinson's disease. METHODS Eighty four patients with early or advanced Parkinson's disease and marked, drug resistant tremor under a stable and optimised antiparkinsonian medication were included in a double blind, randomised, placebo controlled, multicentre study and assigned to add on treatment (7 week dose titration interval, 4 week maintenance period) with either pramipexole (n=44) or placebo (n=40) as adjunct. The primary end point was the absolute change in tremor score, defined as the sum of tremor related items (16, 20, 21) of the unified Parkinson's disease rating scale (UPDRS) in "on" periods. Secondary end points included the percentage change in tremor score, the absolute and percentage changes in long term EMG tremor registration, and the change in tremor self rating scales. Safety and tolerability were assessed on the basis of adverse events, laboratory tests, ECG, and vital signs. RESULTS Pramipexole was significantly superior to placebo with a difference between treatment groups in the mean absolute change in tremor score of -4.4 (95% confidence interval (95% CI) -6.2 to -2.5) (p<0.0001), corresponding to a difference in the mean percentage change of -34.7% in favour of pramipexole. The secondary end points were consistent with the significant change in tremor score and provided further evidence for the benefit of pramipexole compared with placebo. Long term EMG registration as an objective measure showed a difference in mean absolute change in tremor occurrence of -15.2% (95%CI -21.4 to -9.0) (p<0.0001), and a difference in the mean percentage change of -45.7% in favour of pramipexole. The treatment effects increased during dose titration and remained stable during the 4 week maintenance dose period until the end of the study. The average daily pramipexole dose during maintenance was 4.1 (SD 0.9) mg. Safety analysis showed an increased rate of fatigue, insomnia, nausea, abdominal pain, and headache under pramipexole, comparable with previous studies. CONCLUSION Pramipexole proved to be an effective agent for patients with Parkinson's disease and drug resistant tremor.
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Affiliation(s)
- O Pogarell
- Department of Neurology, Philipps-University of Marburg, Marburg, Germany.
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10
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Pollentier S, Brecht HM. Pramipexol: Präklinisches und klinisches Profil. Akt Neurol 1998. [DOI: 10.1055/s-2007-1017753] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/21/2022]
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Pollentier S. [How erythrophobia became social phobia. An overview of the clinical-diagnostic topic]. Nervenarzt 1992; 63:28-33. [PMID: 1570037] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 12/27/2022]
Abstract
Introduced as a separate diagnostical entity at the turn of the century, erythrophobia or fear of blushing is now considered as a subtype of social phobia. A historical review of the various clinical concepts of erythrophobia is given. Recent clinical developments and some differential diagnostical aspects are discussed.
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Affiliation(s)
- S Pollentier
- Fachkrankenhaus für Neurologie und Psychiatrie, Alexianer-Krankenhaus Köln
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