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Clinical course and prognosis in patients with Gaucher disease and parkinsonism.

ABSTRACT: OBJECTIVE:The goal of this study was to characterize the parkinsonian phenotype in patients with Gaucher disease (GD) who developed parkinsonism in order to evaluate clinical course and prognosis. METHODS:This is a retrospective observational study conducted at the Clinical Center of the NIH, Bethesda, MD, over a period of 10 years. The study included 19 patients with GD and parkinsonism. The severity of Gaucher and parkinsonian symptoms was determined from clinical data including physical, neurologic, pathologic, and neurocognitive evaluations, family histories, imaging studies, olfactory testing, and validated questionnaires. RESULTS:We found an earlier age at onset of parkinsonism and evidence of mild cognitive dysfunction in our cohort. Although the clinical course in some patients was similar to that of idiopathic Parkinson disease with a favorable levodopa response, others exhibited features characteristic of dementia with Lewy bodies. When we examined the patients as a group, we did not observe a uniformly aggressive form of parkinsonism after the initial onset of symptoms, contrary to other published reports. CONCLUSIONS:Appreciable clinical variation was seen in this cohort with GD and parkinsonism. Although some patients had early onset and prominent cognitive changes, others had a later, slower course, indicating that GBA1 mutations may not be a reliable prognostic indicator in Parkinson disease in clinical settings.

SUBMITTER: Lopez G

PROVIDER: S-EPMC4830189 | biostudies-literature | 2016 Apr

REPOSITORIES: biostudies-literature

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Clinical course and prognosis in patients with Gaucher disease and parkinsonism.

Lopez Grisel G Kim Jenny J Wiggs Edythe E Cintron Dahima D Groden Catherine C Tayebi Nahid N Mistry Pramod K PK Pastores Gregory M GM Zimran Ari A Goker-Alpan Ozlem O Sidransky Ellen E

Neurology. Genetics 20160304 2

<h4>Objective</h4>The goal of this study was to characterize the parkinsonian phenotype in patients with Gaucher disease (GD) who developed parkinsonism in order to evaluate clinical course and prognosis.<h4>Methods</h4>This is a retrospective observational study conducted at the Clinical Center of the NIH, Bethesda, MD, over a period of 10 years. The study included 19 patients with GD and parkinsonism. The severity of Gaucher and parkinsonian symptoms was determined from clinical data including ...[more]

PMID: 27123476

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Project description:Investigate the incidence of Parkinsonism among patients with Gaucher disease type 1 (GD1) and describe demographics, genotypes, and Gaucher disease (GD)-related characteristics for affected and non-affected patients.Cohort study with age- and gender-matched nested case-control analysis. Calculation of event incidence, standardized morbidity ratio, and event-free survival (Kaplan-Meier).The International Collaborative Gaucher Group (ICGG) Gaucher Registry data as of June 2010. Study cohort: GD1 patients with any report of Parkinsonism. Pre-matching control group: All GD1 patients with no report of Parkinsonism.The matched study cohort comprised of 68 patients with reports of Parkinsonism and 649 patients without Parkinsonism. Demographic and clinical characteristics suggest a milder GD phenotype in patients with Parkinsonism compared to the control group. The most prevalent GD1 genotype was N370S/N370S (39% for controls; 46% for patients with Parkinsonism). Patients with Parkinsonism were diagnosed with GD1 at a mean age of 37 years compared to 31 years in control patients. The standardized morbidity ratio for the development of Parkinsonism among all GD1 patients indicated an approximately 6 to 17 fold increase over that of 2 reference populations. The mean age of reported Parkinsonism onset was 57 years compared to 60 years in the general population (Lees, Hardy, and Revesz, 2009 [1]). The probability that a patient with GD1 will develop Parkinsonism before age 70 years is 5 to 7% and 9 to 12% before age 80 years.The incidence of Parkinsonism among GD1 patients is significantly increased compared to two reference populations. GD1 patients with Parkinsonism have a later median age at GD diagnosis, later age at the start of treatment, and later age at death than patients with GD1 alone. The Gaucher-related clinical profile of GD1 patients with Parkinsonism is similar to or milder than the GD1 alone group. Therefore, severity of the common GD1 clinical manifestations does not appear to be predictive for the onset of Parkinsonism.

Project description:BackgroundGaucher disease (GD) is a rare lysosomal storage disorder, characterized by hepatosplenomegaly and pancytopenia, with or without neurologic involvement. The disorder is categorized into three phenotypes: GD type 1 or nonneuronopathic GD; GD type 2 or acute neuronopathic GD; and GD type 3 or chronic neuronopathic GD. The purposes of this study were to describe clinical characteristics of Thai GD in patients diagnosed and/or followed up during 2010-2018 and to perform re-genotyping including analysis of GBA recombinant alleles which had not been investigated in Thai patients before.ResultsThere were 27 patients from seven medical centers, enrolled in the study. All the cases had pediatric onset. GD3 (44.5%) was the most common phenotype, followed by GD2 (40.7%) and GD1 (14.8%), with one case of neonatal GD. The median age of onset for GD1, GD2, and GD3 was 72, 4 and 12 months, respectively, suggesting relatively earlier onset of GD1 and GD3 in Thai patients. All patients with GD1 and most patients with GD3 received ERT. Four patients with GD3 had ERT followed by HSCT. Patients with GD3 who received no or late ERT showed unfavorable outcomes. We identified 14 variants including two novel (p.S384F and p.W533*) and 12 reported pathogenic variants: p.L483P, p.N409S, p.R159W, p.P305A, p.A175G, p.D448H, p.V414L, IVS2+1G>A, IVS6-1G>C, IVS7+1G>C, IVS9-3C>G, and Rec1a. The p.L483P was the most prevalent allele found in this study, at 66% (33/50 alleles), followed by IVS2+1G>A, Rec1a, and IVS6-1G>C. Twenty-four percent of patients were reassigned with validated genotypes, most of whom (4 of 6) were patients with GD2. The [p.S384F + p.W533*] being compounded with p.L483P, was found in the patient with neonatal GD, suggesting that the p.S384F could potentiate the deleterious effect of the p.W533*, and/or vice versa.ConclusionsNeuronopathic GD was strikingly prevalent among Thai affected population. Homozygous p.L483P was the most common genotype identified in Thai patients. Recombinant allele Rec1a and splicing mutations were associated with GD2 and severe cases of GD3. Mutation spectrum could be useful for designing stepwise molecular analysis, genetic screenings in population, and new therapeutic research for neuronopathic GD.

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Clinical course and prognosis in patients with Gaucher disease and parkinsonism.

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Clinical course and prognosis in patients with Gaucher disease and parkinsonism.

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