Modifying effects of HLA-DRB1 allele interactions on age at onset of multiple sclerosis in Western Australia

2009 ◽  
Vol 16 (1) ◽  
pp. 15-20 ◽  
Author(s):  
Jing-Shan Wu ◽  
Wei Qiu ◽  
Alison Castley ◽  
Ian James ◽  
Frank L Mastaglia ◽  
...  
Keyword(s):  
Multiple Sclerosis ◽  
High Resolution ◽  
Genetic Factors ◽  
Risk Allele ◽  
Age At Onset ◽  
Demyelinating Diseases ◽  
Epistatic Interactions ◽  
Drb1 Locus ◽  
Disease Modifying ◽  
Multiple Sclerosis Patients

The contribution of genetic factors to the age at onset in multiple sclerosis is poorly understood. Our objective was to investigate the disease modifying effects of HLA-DRB1 alleles and allele interactions on age at onset of multiple sclerosis. High-resolution four-digit HLA-DRB1 genotyping was performed in a cohort of 461 multiple sclerosis patients from the Perth Demyelinating Diseases Database. Carriage of the HLA-DRB1*1501 risk allele was not significantly associated with age at onset but HLA-DRB1*0801 was associated with a later onset of the disease. The HLA-DRB1*0401 allele was associated with a reduced age at onset when combined with DRB1*1501 but may delay age at onset when combined with DRB1*0801. These findings indicate that epistatic interactions at the HLA-DRB1 locus have significant modifying effects on age at onset of multiple sclerosis and demonstrate the value of high-resolution genotyping in detecting such associations.

Age of hypertension onset in multiple sclerosis patients

2021 ◽  
pp. 135245852110030
Author(s):  
Farren BS Briggs ◽  
Diane Krill ◽  
Eddie Hill ◽  
Devon S Conway
Keyword(s):  
Multiple Sclerosis ◽  
Linear Regression ◽  
Age At Onset ◽  
Complex Relationships ◽  
Multiple Sclerosis Patients

Background/Objective: Hypertension (HTN) is common in multiple sclerosis (MS), and it is associated with poorer outcomes. We sought to characterize HTN age at onset (AAO) by MS status. Methods/Results: There were 130,050 incident HTN patients, among whom there were 892 MS patients. We conducted multivariable linear regression adjusting for patient attributes. Sex- and race-stratified models were conducted. HTN AAO did not differ in patients with and without MS ( p = 0.17). Similar null associations were observed in the sex- and race-specific analyses. Conclusion: While there are complex relationships between HTN and MS, there are no differences in HTN AAO by MS status.

scholarly journals Multiple Sclerosis in Malaysia: Demographics, Clinical Features, and Neuroimaging Characteristics

2013 ◽  
Vol 2013 ◽  
pp. 1-10 ◽  
Author(s):  
S. Viswanathan ◽  
N. Rose ◽  
A. Masita ◽  
J. S. Dhaliwal ◽  
S. D. Puvanarajah ◽  
...  
Keyword(s):  
Multiple Sclerosis ◽  
Neuromyelitis Optica ◽  
Demyelinating Disease ◽  
Age At Onset ◽  
Positive Family History ◽  
Disease Onset ◽  
Demyelinating Diseases ◽  
Lesion Length ◽  
Relapsing Remitting ◽  
Spectrum Disorders

Background. Multiple sclerosis (MS) is an uncommon disease in multiracial Malaysia. Diagnosing patients with idiopathic inflammatory demyelinating diseases has been greatly aided by the evolution in diagnostic criterion, the identification of new biomarkers, and improved accessibility to neuroimaging in the country.Objectives. To investigate the spectrum of multiple sclerosis in Malaysia.Methods. Retrospective analysis with longitudinal follow-up of patients referred to a single tertiary medical center with neurology services in Malaysia.Results. Out of 245 patients with idiopathic inflammatory demyelinating disease, 104 patients had multiple sclerosis. Female to male ratio was 5 : 1. Mean age at onset was 28.6 ± 9.9 years. The Malays were the predominant racial group affected followed by the Chinese, Indians, and other indigenous groups. Subgroup analysis revealed more Chinese having neuromyelitis optica and its spectrum disorders rather than multiple sclerosis. Positive family history was reported in 5%. Optic neuritis and myelitis were the commonest presentations at onset of disease, and relapsing remitting course was the commonest disease pattern observed. Oligoclonal band positivity was 57.6%. At disease onset, 61.5% and 66.4% fulfilled the 2005 and 2010 McDonald’s criteria for dissemination in space. Mean cord lesion length was 1.86 ± 1.65 vertebral segments in the relapsing remitting group as opposed to 6.25 ± 5.18 vertebral segments in patients with neuromyelitis optica and its spectrum disorders.Conclusion. The spectrum of multiple sclerosis in Malaysia has changed over the years. Further advancement in diagnostic criteria will no doubt continue to contribute to the evolution of this disease here.

Genetic factors implicated in the response to fingolimod treatment in multiple sclerosis patients: results from a pharmacogenetic meta-analysis

2021 ◽  
Vol 429 ◽  
pp. 117750
Author(s):  
Laura Ferrè ◽  
Elisabetta Mascia ◽  
Ferdinando Clarelli ◽  
Tina Roostaei ◽  
Beatrice Pignolet ◽  
...  
Keyword(s):  
Multiple Sclerosis ◽  
Genetic Factors ◽  
Meta Analysis ◽  
Multiple Sclerosis Patients

scholarly journals Onset of secondary progressive multiple sclerosis is not influenced by current relapsing multiple sclerosis therapies

2018 ◽  
Vol 4 (2) ◽  
pp. 205521731878334 ◽  
Author(s):  
Francisco Coret ◽  
Francisco C Pérez-Miralles ◽  
Francisco Gascón ◽  
Carmen Alcalá ◽  
Arantxa Navarré ◽  
...  
Keyword(s):  
Multiple Sclerosis ◽  
Progressive Multiple Sclerosis ◽  
Secondary Progressive Multiple Sclerosis ◽  
Secondary Progressive ◽  
Disease Modifying Therapies ◽  
Relapsing Remitting ◽  
Disease Modifying ◽  
Remitting Multiple Sclerosis ◽  
Multiple Sclerosis Patients ◽  
Relapsing Remitting Multiple Sclerosis

Background Disease-modifying therapies are thought to reduce the conversion rate to secondary progressive multiple sclerosis. Objective To explore the rate, chronology, and contributing factors of conversion to the progressive phase in treated relapsing–remitting multiple sclerosis patients. Methods Our study included 204 patients treated for relapsing–remitting multiple sclerosis between 1995 and 2002, prospectively followed to date. Kaplan–Meier analysis was applied to estimate the time until secondary progressive multiple sclerosis conversion, and multivariate survival analysis with a Cox regression model was used to analyse prognostic factors. Results Relapsing–remitting multiple sclerosis patients were continuously treated for 13 years (SD 4.5); 36.3% converted to secondary progressive multiple sclerosis at a mean age of 42.6 years (SD 10.6), a mean time of 8.2 years (SD 5.2) and an estimated mean time of 17.2 years (range 17.1–18.1). A multifocal relapse, age older than 34 years at disease onset and treatment failure independently predicted conversion to secondary progressive multiple sclerosis but did not influence the time to reach an Expanded Disability Status Scale of 6.0. Conclusions The favourable influence of disease-modifying therapies on long-term disability in relapsing–remitting multiple sclerosis is well established. However, the time to progression onset and the subsequent clinical course in treated patients seem similar to those previously reported in natural history studies. More studies are needed to clarify the effect of disease-modifying therapies once the progressive phase has been reached.

Assessment and management of infectious risk in multiple sclerosis patients treated with disease-modifying therapies

2021 ◽  
Vol 429 ◽  
pp. 117753
Author(s):  
Maria Antonella Zingaropoli ◽  
Patrizia Pasculli ◽  
Marco Iannetta ◽  
Valentina Perri ◽  
Matteo Tartaglia ◽  
...  
Keyword(s):  
Multiple Sclerosis ◽  
Infectious Risk ◽  
Disease Modifying Therapies ◽  
Disease Modifying ◽  
Multiple Sclerosis Patients
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