12 results on '"L. Truyen"'
Search Results
2. Safety and efficacy of galantamine in subjects with mild cognitive impairment
- Author
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B, Winblad, S, Gauthier, L, Scinto, H, Feldman, G K, Wilcock, L, Truyen, A J, Mayorga, D, Wang, H R, Brashear, J S, Nye, K, Wilks, and GAL-INT-11/18 Study Group
- Subjects
Male ,medicine.medical_specialty ,Clinical Dementia Rating ,Placebo ,law.invention ,Cohort Studies ,Double-Blind Method ,Randomized controlled trial ,Alzheimer Disease ,law ,Internal medicine ,Galantamine ,medicine ,Humans ,Psychiatry ,Aged ,Retrospective Studies ,Aged, 80 and over ,Retrospective cohort study ,Middle Aged ,Cohort ,Digit symbol substitution test ,Female ,Neurology (clinical) ,Cognition Disorders ,Psychology ,medicine.drug ,Cohort study - Abstract
Objective: To assess the safety of galantamine in subjects with mild cognitive impairment (MCI), the ability of galantamine to benefit cognition and global functioning in subjects with MCI, and the ability of galantamine to delay conversion to dementia.Methods: In two studies, 2,048 subjects, 990 in Study 1 and 1,058 in Study 2, with a Clinical Dementia Rating (CDR) = 0.5, CDR memory score ≥0.5, without dementia were randomized to double-blind galantamine (16–24 mg/day) or placebo for 24 months. Primary efficacy endpoint at month 24 was number (%) of subjects who converted from MCI to dementia (CDR ≥ 1.0).Results: There were no differences between galantamine and placebo in 24-month conversion rates (Study 1: 22.9% [galantamine] vs 22.6% [placebo], p = 0.146; Study 2: 25.4% [galantamine] vs 31.2% [placebo], p = 0.619). Mean CDR-sum of boxes declined less with galantamine than placebo at 12 and 24 months in Study 1 (p = 0.024 [12 months] and p = 0.028 [24 months]), but not in Study 2 (p = 0.662 [12 months] and p = 0.056 [24 months]). Digit Symbol Substitution Test scores improved with galantamine in Study 1 at 12 months and in Study 2 at 24 months (Study 1: p = 0.009 [month 12] and p = 0.079 [Month 24]; Study 2: p = 0.154 [month 12] and p = 0.020 [month 24]). The most frequently reported adverse event was nausea (galantamine, 29%; placebo, 10%). Serious AEs occurred in 19% of each group. Mortality of the cohort after retrospectively determining the status of subjects (98.3%) at 24 months was 1.4% (galantamine) and 0.3% (placebo); RR (95% CI), 1.70 (1.00, 2.90).Conclusions: Galantamine failed to significantly influence conversion to dementia. Galantamine was generally well tolerated. Whereas recorded mortality was greater in the galantamine group than in the placebo group in the original per-protocol assessment, a post hoc analysis of the cohort was consistent with no increased risk.
- Published
- 2016
3. Re-Engineering Alzheimer Clinical Trials: Global Alzheimer’s Platform Network
- Author
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J Dwyer, Howard Feldman, L Truyen, Rachelle S. Doody, J. Cummings, D Lappin, J C Egan, R Barton, Stephen Salloway, Paul S. Aisen, J Bork, Reisa A. Sperling, and G Vradenburg
- Subjects
Patient recruitment ,Clinical trial ,Drug development ,business.industry ,CCNA ,Clinical study design ,Value proposition ,Data quality ,Medicine ,Operations management ,Certification ,business ,Article - Abstract
Alzheimer’s disease (AD) drug development is costly, time-consuming, and inefficient. Trial site functions, trial design, and patient recruitment for trials all require improvement. The Global Alzheimer Platform (GAP) was initiated in response to these challenges. Four GAP work streams evolved in the US to address different trial challenges: 1) registry-to-cohort web-based recruitment; 2) clinical trial site activation and site network construction (GAP-NET); 3) adaptive proof-of-concept clinical trial design; and 4) finance and fund raising. GAP-NET proposes to establish a standardized network of continuously funded trial sites that are highly qualified to perform trials (with established clinical, biomarker, imaging capability; certified raters; sophisticated management system. GAP-NET will conduct trials for academic and biopharma industry partners using standardized instrument versions and administration. Collaboration with the Innovative Medicines Initiative (IMI) European Prevention of Alzheimer’s Disease (EPAD) program, the Canadian Consortium on Neurodegeneration in Aging (CCNA) and other similar international initiatives will allow conduct of global trials. GAP-NET aims to increase trial efficiency and quality, decrease trial redundancy, accelerate cohort development and trial recruitment, and decrease trial costs. The value proposition for sites includes stable funding and uniform training and trial execution; the value to trial sponsors is decreased trial costs, reduced time to execute trials, and enhanced data quality. The value for patients and society is the more rapid availability of new treatments for AD.
- Published
- 2016
4. Long-term efficacy and safety of galantamine in patients with mild-to-moderate Alzheimer's disease: multicenter trial
- Author
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T Pirttilä, L Truyen, G Wilcock, and C V Damaraju
- Subjects
Male ,medicine.medical_specialty ,Activities of daily living ,Urinary system ,law.invention ,Randomized controlled trial ,Double-Blind Method ,law ,Alzheimer Disease ,Internal medicine ,Multicenter trial ,medicine ,Insomnia ,Galantamine ,Humans ,Adverse effect ,Aged ,business.industry ,Long-Term Care ,Clinical trial ,Neurology ,Physical therapy ,Female ,Neurology (clinical) ,Cholinesterase Inhibitors ,medicine.symptom ,business ,medicine.drug - Abstract
In clinical trials, short-term galantamine treatment produces consistent positive effects on global ratings, cognitive tests, and assessments of activities of daily living and behavior in patients with mild-to-moderate Alzheimer's disease (AD), providing the rationale for longer-term, open-label treatment. In this continuation trial following enrollment in previous 12-month trials, patients received galantamine 24 mg/day for a total of 24 months (total exposure up to 36 months). Primary efficacy measures were the ADAS-cog/11 and DAD. Adverse events (AEs) were coded to WHO preferred terms, including AEs begun in previous trials. Initial improvement in cognitive function was followed by a gradual decline, as measured by increased ADAS-cog/11 scores. At 36 months, ADAS-cog/11 scores increased by a mean (SEM) of 12.4 (0.80) points (P < 0.001) versus a projected 22-point increase for untreated patients. Functional abilities, as measured by the DAD, had decreased significantly at each time point versus baseline (P < 0.001). The most common treatment-emergent AEs were agitation (16.1%), insomnia (12.4%), fall (11.2%), and urinary tract infection (10.2%). AEs were mainly mild to moderate, appropriate for an elderly population, with few judged treatment related. Galantamine 24 mg/day is safe and effective for long-term treatment of mild-to-moderate AD. Potential exists for prolonged benefit with galantamine therapy versus lack of treatment for the long-term.
- Published
- 2004
5. Effects of a flexible galantamine dose in Alzheimer's disease: a randomised, controlled trial
- Author
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David Wilkinson, J Mintzer, L Truyen, Kenneth Rockwood, and T Wessel
- Subjects
Male ,medicine.medical_specialty ,Time Factors ,Placebo-controlled study ,Neuropsychological Tests ,Receptors, Nicotinic ,Placebo ,Severity of Illness Index ,Synaptic Transmission ,Drug Administration Schedule ,law.invention ,Disability Evaluation ,Randomized controlled trial ,Double-Blind Method ,law ,Alzheimer Disease ,Internal medicine ,Activities of Daily Living ,medicine ,Galantamine ,Dementia ,Humans ,Psychiatry ,Aged ,Mini–Mental State Examination ,Intention-to-treat analysis ,medicine.diagnostic_test ,Dose-Response Relationship, Drug ,Maintenance dose ,medicine.disease ,Psychiatry and Mental health ,Treatment Outcome ,Papers ,Surgery ,Female ,Neurology (clinical) ,Cholinesterase Inhibitors ,Psychology ,Cognition Disorders ,medicine.drug - Abstract
Objective—To assess the eYcacy and safety of galantamine in Alzheimer’s disease at 3 months using flexible dose escalation. Methods—A randomised, double blind, placebo controlled trial in 43 centres in the United States, Canada, Great Britain, South Africa,Australia,and New Zealand. Patients with probable Alzheimer’s disease (n=386; 171 women) with a score of 11‐24 on the mini mental state examination, and a score>12 on the cognitive subscale of the Alzheimer’s disease assessment scale (ADAS-cog) were randomised to placebo, or galantamine escalated over 4 weeks to a maintenance dose of 24 or 32 mg/day. The primary outcome measures were the change in ADAS-cog score and the clinician’s interview based impression of change plus caregiver input (CIBIC-plus) score. Activities of daily living (ADL) and behavioural symptoms were secondary outcomes. To compare the eVects of highest levels of dosing, an observed cases (OC) analysis was undertaken, with classic intention to treat (ITT) and ITT with last observation carried forward (LOCF) as confirmatory analyses. Results—At 3 months, galantamine (24‐32 mg/day) produced a significantly better outcome on cognitive function than placebo (treatment diVerence=1.9 points on ADAS-cog, p=0.002) and a significantly better global response than placebo, as measured by CIBIC-plus (deterioration in 21% of patients on galantamine v 37% on placebo; p
- Published
- 2001
6. Risks of multiple sclerosis in relatives of patients in Flanders, Belgium
- Author
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Robert Vlietinck, Ruth J. F. Loos, J. Debruyne, J. De Keyser, I M Yee, Herwig Carton, L. Truyen, R Medaer, A D Sadovnick, Marie B. D'hooghe, Gerontology, Clinical sciences, Neuroprotection & Neuromodulation, Neurology, and University of Groningen
- Subjects
Proband ,Male ,Middle Age ,Belgium ,Recurrence ,Epidemiology ,Ethnicity ,Medicine ,Child ,Netherlands ,Likelihood Functions ,Netherlands/ethnology ,Middle Aged ,PREVALENCE ,Pedigree ,Psychiatry and Mental health ,TWINS ,familial multiple sclerosis ,language ,Female ,Disease Susceptibility ,Risk assessment ,recurrence risk ,Human ,Research Article ,Adult ,medicine.medical_specialty ,Canada ,Multiple Sclerosis ,Age adjustment ,Canada/epidemiology ,Ethnic Groups ,Risk Assessment ,Age Distribution ,Confidence Intervals ,Humans ,First-degree relatives ,Belgium/epidemiology ,Multiple Sclerosis/ethnology/*genetics ,Aged ,business.industry ,Multiple sclerosis ,medicine.disease ,Middle age ,language.human_language ,Flemish ,Surgery ,Neurology (clinical) ,business ,Demography - Abstract
Objectives - To calculate age adjusted risks for multiple sclerosis in relatives of Flemish patients with multiple sclerosis. Methods - Lifetime risks were calculated using the maximum likelihood approach. Results - Vital information was obtained on 674 probands with multiple sclerosis in Flanders and a total of their 26 225 first, second, and third degree relatives. Full medical information to allow documentation of multiple sclerosis status was available for 21 351 (81.4%) relatives. The age adjusted risk for parents was 1.61 (SEM 0.35)%, for siblings 2.10 (SE 0.36)%, and for children 1.71 (SEM 0.70)%. For aunts and uncles, the risk was 0.66 (SEM 0.13)%. Conclusions - The risk for first degree relatives of patients with multiple sclerosis in Flanders is increased 10-fold to 12-fold; for second degree relatives, it is increased threefold. This information can be used for risk counselling in families and provides additional support for the role of more than one locus contributing to the susceptibility of multiple sclerosis.
- Published
- 1997
7. Patterns of disease activity in multiple sclerosis
- Author
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L Truyen, J. Gheuens, and J. J. Martin
- Subjects
Letter ,medicine.diagnostic_test ,business.industry ,Speech recognition ,Multiple sclerosis ,General Engineering ,Magnetic resonance imaging ,General Medicine ,medicine.disease ,Disease activity ,Text mining ,General Earth and Planetary Sciences ,Medicine ,business ,Neuroscience ,General Environmental Science - Published
- 1990
8. Tackling gaps in developing life-changing treatments for dementia.
- Author
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Mauricio R, Benn C, Davis J, Dawson G, Dawson LA, Evans A, Fox N, Gallacher J, Hutton M, Isaac J, Jones DNC, Jones L, Lalli G, Libri V, Lovestone S, Moody C, Noble W, Perry H, Pickett J, Reynolds D, Ritchie C, Rohrer JD, Routledge C, Rowe J, Snyder H, Spires-Jones T, Swartz J, Truyen L, and Whiting P
- Abstract
Since the G8 dementia summit in 2013, a number of initiatives have been established with the aim of facilitating the discovery of a disease-modifying treatment for dementia by 2025. This report is a summary of the findings and recommendations of a meeting titled "Tackling gaps in developing life-changing treatments for dementia", hosted by Alzheimer's Research UK in May 2018. The aim of the meeting was to identify, review, and highlight the areas in dementia research that are not currently being addressed by existing initiatives. It reflects the views of leading experts in the field of neurodegeneration research challenged with developing a strategic action plan to address these gaps and make recommendations on how to achieve the G8 dementia summit goals. The plan calls for significant advances in (1) translating newly identified genetic risk factors into a better understanding of the impacted biological processes; (2) enhanced understanding of selective neuronal resilience to inform novel drug targets; (3) facilitating robust and reproducible drug-target validation; (4) appropriate and evidence-based selection of appropriate subjects for proof-of-concept clinical trials; (5) improving approaches to assess drug-target engagement in humans; and (6) innovative approaches in conducting clinical trials if we are able to detect disease 10-15 years earlier than we currently do today.
- Published
- 2019
- Full Text
- View/download PDF
9. Effects of a flexible galantamine dose in Alzheimer's disease: a randomised, controlled trial.
- Author
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Rockwood K, Mintzer J, Truyen L, Wessel T, and Wilkinson D
- Subjects
- Activities of Daily Living, Aged, Cholinesterase Inhibitors adverse effects, Cognition Disorders diagnosis, Disability Evaluation, Dose-Response Relationship, Drug, Double-Blind Method, Drug Administration Schedule, Female, Galantamine adverse effects, Humans, Male, Neuropsychological Tests, Receptors, Nicotinic drug effects, Severity of Illness Index, Synaptic Transmission drug effects, Time Factors, Treatment Outcome, Alzheimer Disease drug therapy, Cholinesterase Inhibitors pharmacology, Cholinesterase Inhibitors therapeutic use, Galantamine pharmacology, Galantamine therapeutic use
- Abstract
Objective: To assess the efficacy and safety of galantamine in Alzheimer's disease at 3 months using flexible dose escalation., Methods: A randomised, double blind, placebo controlled trial in 43 centres in the United States, Canada, Great Britain, South Africa, Australia, and New Zealand. Patients with probable Alzheimer's disease (n=386; 171 women) with a score of 11-24 on the mini mental state examination, and a score> or =12 on the cognitive subscale of the Alzheimer's disease assessment scale (ADAS-cog) were randomised to placebo, or galantamine escalated over 4 weeks to a maintenance dose of 24 or 32 mg/day. The primary outcome measures were the change in ADAS-cog score and the clinician's interview based impression of change plus caregiver input (CIBIC-plus) score. Activities of daily living (ADL) and behavioural symptoms were secondary outcomes. To compare the effects of highest levels of dosing, an observed cases (OC) analysis was undertaken, with classic intention to treat (ITT) and ITT with last observation carried forward (LOCF) as confirmatory analyses., Results: At 3 months, galantamine (24-32 mg/day) produced a significantly better outcome on cognitive function than placebo (treatment difference=1.9 points on ADAS-cog, p=0.002) and a significantly better global response than placebo, as measured by CIBIC-plus (deterioration in 21% of patients on galantamine v 37% on placebo; p<0.001). Galantamine produced significant benefits on basic and instrumental ADL. Behavioural symptoms did not change significantly from baseline levels in either group. Adverse events (primarily gastrointestinal) were of mild to moderate intensity. There were no important differences between the OC, ITT, and ITT/LOCF analyses. Most patients (82%) who were maintained on the higher dose of galantamine completed the study., Conclusions: Patients on galantamine, compared with those on placebo, experienced benefits in cognitive function and instrumental and basic activities of daily living. Flexible dose escalation of galantamine was well tolerated.
- Published
- 2001
- Full Text
- View/download PDF
10. Risks of multiple sclerosis in relatives of patients in Flanders, Belgium.
- Author
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Carton H, Vlietinck R, Debruyne J, De Keyser J, D'Hooghe MB, Loos R, Medaer R, Truyen L, Yee IM, and Sadovnick AD
- Subjects
- Adult, Age Distribution, Aged, Belgium epidemiology, Canada epidemiology, Child, Confidence Intervals, Disease Susceptibility, Ethnicity, Female, Humans, Likelihood Functions, Male, Middle Aged, Multiple Sclerosis ethnology, Netherlands ethnology, Pedigree, Recurrence, Risk Assessment, Multiple Sclerosis genetics
- Abstract
Objectives: To calculate age adjusted risks for multiple sclerosis in relatives of Flemish patients with multiple sclerosis., Methods: Lifetime risks were calculated using the maximum likelihood approach., Results: Vital information was obtained on 674 probands with multiple sclerosis in Flanders and a total of their 26225 first, second, and third degree relatives. Full medical information to allow documentation of multiple sclerosis status was available for 21351 (81.4%) relatives. The age adjusted risk for parents was 1.61 (SEM 0.35)%, for siblings 2.10 (SE 0.36)%, and for children 1.71 (SEM 0.70)%. For aunts and uncles, the risk was 0.66 (SEM 0.13)%., Conclusions: The risk for first degree relatives of patients with multiple sclerosis in Flanders is increased 10-fold to 12-fold; for second degree relatives, it is increased threefold. This information can be used for risk counselling in families and provides additional support for the role of more than one locus contributing to the susceptibility of multiple sclerosis.
- Published
- 1997
- Full Text
- View/download PDF
11. Postpartum dissecting aneurysm of the basilar artery.
- Author
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Van de Kelft E, Kunnen J, Truyen L, and Heytens L
- Subjects
- Adult, Female, Humans, Postpartum Period, Aortic Dissection diagnosis, Basilar Artery pathology
- Abstract
Background and Purpose: Dissecting aneurysms arising from the vertebrobasilar complex are rare and difficult to manage. More of their natural history needs to be known before treatment can be optimized., Case Description: We report a postpartum dissecting aneurysm of the right vertebrobasilar artery in a 31-year-old woman that was confirmed by angiographic identification of a double lumen. The intracranial segment of the right vertebral artery was thrombosed proximal to the aneurysm. The patient, managed conservatively, recovered well and, when reexamined 2 months later, was found to be neurologically intact. A repeat angiographic study at that time demonstrated that the aneurysm had resolved., Conclusions: Proximal occlusion may have protected the aneurysm from rupture and further dissection, thereby making surgery unnecessary.
- Published
- 1992
- Full Text
- View/download PDF
12. Patterns of disease activity in multiple sclerosis.
- Author
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Truyen L, Gheuens J, and Martin JJ
- Subjects
- Humans, Multiple Sclerosis physiopathology, Brain pathology, Magnetic Resonance Imaging, Multiple Sclerosis pathology
- Published
- 1990
- Full Text
- View/download PDF
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