Research Topics
Genomes and GenesSpecies | Sreeram V RamagopalanSummaryAffiliation: University of Oxford Country: UK Publications
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Publications
Life on top-working@ the Wellcome Trust Centre for Human Genetics: Scotland Yard for DNA detectivesSreeram V Ramagopalan
The Wellcome Trust Centre for Human Genetics, University of Oxford, Headington, Oxford, OX3 7BN, United Kingdom
N Biotechnol 25:39. 2008..The centre houses multidisciplinary research teams in human genetics, functional genomics, bioinformatics, statistical genetics and structural biology...
Evidence for genetic regulation of vitamin D status in twins with multiple sclerosisSarah Michelle Orton
Wellcome Trust Centre for Human Genetics and Department of Clinical Neurology, University of Oxford Oxford, United Kingdom
Am J Clin Nutr 88:441-7. 2008..Recent epidemiologic, experimental, and clinical evidence support an effect for low environmental supplies of vitamin D in mediating an increased susceptibility to MS...
Molecular mechanisms of migraine?S V Ramagopalan
Dept of Clinical Neurology, University of Oxford, Oxford, UK
J Neurol 254:1629-35. 2007..This disease is genetically heterogeneous,with three causative genes having been identified. This review uses insights garnered from FHM to try and shed light on possible migraine disease pathogenesis...
A ChIP-seq defined genome-wide map of vitamin D receptor binding: associations with disease and evolutionSreeram V Ramagopalan
Wellcome Trust Centre for Human Genetics, University of Oxford, Headington, Oxford OX3 7BN, United Kingdom
Genome Res 20:1352-60. 2010..ChIP-seq determination of transcription factor binding, in combination with GWA data, provides a powerful approach to further understanding the molecular bases of complex diseases...
Rare variants in the CYP27B1 gene are associated with multiple sclerosisSreeram V Ramagopalan
Wellcome Trust Centre for Human Genetics, University of Oxford, Oxford, United Kingdom
Ann Neurol 70:881-6. 2011..Genetic linkage analysis and genotyping of candidate genes in families with 4 or more affected individuals more heavily loaded for susceptibility genes has not fully explained familial disease clustering...
Expression of the multiple sclerosis-associated MHC class II Allele HLA-DRB1*1501 is regulated by vitamin DSreeram V Ramagopalan
Wellcome Trust Centre for Human Genetics, University of Oxford, Oxford, United Kingdom
PLoS Genet 5:e1000369. 2009..These findings support a connection between the main epidemiological and genetic features of this disease with major practical implications for studies of disease mechanism and prevention...
Epistasis among HLA-DRB1, HLA-DQA1, and HLA-DQB1 loci determines multiple sclerosis susceptibilityMatthew R Lincoln
University Department of Clinical Neurology, Third Floor, West Wing, John Radcliffe Hospital, University of Oxford, Oxford OX3 9DU, United Kingdom
Proc Natl Acad Sci U S A 106:7542-7. 2009..MHC disease associations may be more generally haplotypic or diplotypic...
Parent-of-origin of HLA-DRB1*1501 and age of onset of multiple sclerosisSreeram V Ramagopalan
Wellcome Trust Centre for Human Genetics, University of Oxford, Oxford, UK
J Hum Genet 54:547-9. 2009..4 years, paternal=30.3 years; P=0.009). HLA-DRB1*1501 exerts a modest, but significant effect on the AO of all forms of MS. Parent-of-origin effects at the MHC are further implicated in MS disease pathogenesis...
HLA class I alleles tag HLA-DRB1*1501 haplotypes for differential risk in multiple sclerosis susceptibilityMichael J Chao
Department of Clinical Neurology, John Radcliffe Hospital, University of Oxford, Oxford OX3 9DU, United Kingdom
Proc Natl Acad Sci U S A 105:13069-74. 2008....
Parental non-inherited HLA resistance alleles do not confer protection against multiple sclerosisSreeram V Ramagopalan
Wellcome Trust Centre for Human Genetics, University of Oxford, Oxford, UK
J Neuroimmunol 196:170-2. 2008..No significant transmission differences between mothers and fathers were found, suggesting that non-inherited resistance alleles do not appear to play a role in MS...
Vitamin D metabolic pathway genes and risk of multiple sclerosis in CanadiansSarah Michelle Orton
Wellcome Trust Centre for Human Genetics and Department of Clinical Neurology, University of Oxford, Oxford, UK
J Neurol Sci 305:116-20. 2011..Previous studies have shown that serum 25-hydroxyvitamin D (25(OH)D) levels are genetically influenced. Polymorphisms in vitamin D pathway genes are candidates for association with MS susceptibility...
Epigenetics in multiple sclerosis susceptibility: difference in transgenerational risk localizes to the major histocompatibility complexMichael J Chao
Department of Clinical Neurology, Level 3 West Wing, John Radcliffe Hospital, University of Oxford, Oxford OX3 7BN, UK
Hum Mol Genet 18:261-6. 2009..The comparison of transmission of the same allele in vertically affected pedigrees (AUNN) to collinear sibling pairs (ASP) may provide a useful screen for putative epigenetic marks...
No evidence for an effect of DNA methylation on multiple sclerosis severity at HLA-DRB1*15 or HLA-DRB5Adam E Handel
Wellcome Trust Centre for Human Genetics, University of Oxford, Oxford, United Kingdom
J Neuroimmunol 223:120-3. 2010..We found no significant effect of DNA methylation across HLA-DRB1*1501 and HLA-DRB5 on severity, although we cannot rule out time- or tissue-specific effects of DNA methylation...
Parent-of-origin effects at the major histocompatibility complex in multiple sclerosisMichael J Chao
Department of Clinical Neurology, John Radcliffe Hospital, University of Oxford, Oxford, UK
Hum Mol Genet 19:3679-89. 2010....
No effect of birth weight on the risk of multiple sclerosis. A population-based studySreeram V Ramagopalan
Wellcome Trust Centre for Human Genetics, University of Oxford, Oxford, UK
Neuroepidemiology 31:181-4. 2008..In a population-based Canadian cohort, we investigated whether there is any difference in birth weight for MS index cases compared to spousal controls...
Parental transmission of HLA-DRB1*15 in multiple sclerosisSreeram V Ramagopalan
Wellcome Trust Centre for Human Genetics, University of Oxford, Oxford, UK
Hum Genet 122:661-3. 2008..A significant over transmission of HLA-DRB1*15 from mothers was observed (chi (2) = 7.73, P = 0.0054), suggesting that parent of origin effects at the MHC determine susceptibility to MS...
The inheritance of resistance alleles in multiple sclerosisSreeram V Ramagopalan
Wellcome Trust Centre for Human Genetics, University of Oxford, Oxford, United Kingdom
PLoS Genet 3:1607-13. 2007..Restriction of antigen presentation by HLA-DRB1*15 seems an improbably simple mechanism of major histocompatibility complex-associated susceptibility...
Seasonality of admissions with multiple sclerosis in ScotlandAdam E Handel
Wellcome Trust Centre for Human Genetics, University of Oxford, Oxford, UK
Eur J Neurol 18:1109-11. 2011..Vitamin D and infectious triggers are two major candidate environmental risk factors proposed to account for this effect. We aimed to assess MS admissions in Scotland for a possible effect of seasonality...
No effect of parental age on risk of multiple sclerosis: a population-based studySreeram V Ramagopalan
Wellcome Trust Centre for Human Genetics, Oxford, UK
Neuroepidemiology 34:106-9. 2010..In a population-based Canadian cohort, we investigated whether there is any difference in parental age at birth for MS index cases compared to spouse controls...
Analysis of 45 candidate genes for disease modifying activity in multiple sclerosisSreeram V Ramagopalan
Dept of Clinical Neurology, University of Oxford, Level 3, West Wing, John Radcliffe Hospital, Oxford, OX3 9DU, UK
J Neurol 255:1215-9. 2008....
Methylation of class II transactivator gene promoter IV is not associated with susceptibility to multiple sclerosisSreeram V Ramagopalan
Wellcome Trust Centre for Human Genetics, University of Oxford, Roosevelt Drive, Headington, Oxford, OX3 7BN, UK
BMC Med Genet 9:63. 2008..In this study we sought to assess whether or not methylation of the MHC2TA promoter pIV could contribute to MS disease aetiology...
Childhood cow's milk allergy and the risk of multiple sclerosis: a population based studySreeram V Ramagopalan
Wellcome Trust Centre for Human Genetics, University of Oxford, Oxford, UK
J Neurol Sci 291:86-8. 2010..Frequency of CMA was compared between index cases and controls. No significant differences were found. Childhood CMA thus does not appear to be a risk factor for MS...
An extension to a statistical approach for family based association studies provides insights into genetic risk factors for multiple sclerosis in the HLA-DRB1 geneSreeram V Ramagopalan
1Department of Clinical Neurology, University of Oxford, The West Wing, The John Radcliffe Hospital, Oxford, OX3 9DU, UK
BMC Med Genet 10:10. 2009..Given the role of this locus in antigen presentation it has been suggested that variations in the peptide binding site of the allele may underlie allelic variation in disease risk...
Mutations in the hemochromatosis gene and the clinical outcome of multiple sclerosisSreeram V Ramagopalan
Department of Clinical Neurology, University of Oxford, UK
J Neuroimmunol 203:104-7. 2008..The frequency of HFE mutations was not different in MS compared to the general population...
Vitamin D receptor binding, chromatin states and association with multiple sclerosisGiulio Disanto
Wellcome Trust Centre for Human Genetics, University of Oxford, Oxford, UK
Hum Mol Genet 21:3575-86. 2012..Further analyses in other immune cell types and functional studies are warranted to fully elucidate the role of vitamin D in the immune system...
Genomic regions associated with multiple sclerosis are active in B cellsGiulio Disanto
Wellcome Trust Centre for Human Genetics, University of Oxford, Oxford, United Kingdom
PLoS ONE 7:e32281. 2012..Similar analyses in other immunological cell types relevant to MS and functional studies are necessary to fully elucidate how genes contribute to MS pathogenesis...
Association of infectious mononucleosis with multiple sclerosis. A population-based studySreeram V Ramagopalan
Wellcome Trust Centre for Human Genetics, Oxford, UK
Neuroepidemiology 32:257-62. 2009..Here in a population-based Canadian cohort, we investigate the relationship between prior clinical infection or vaccination and the risk of MS...
Multiple sclerosis and the major histocompatibility complexSreeram V Ramagopalan
Wellcome Trust Centre for Human Genetics, UK
Curr Opin Neurol 22:219-25. 2009..We review here some of the recent findings of MS genetics with a particular focus on genes of the major histocompatibility complex (MHC)...
Early life child exposure and the risk of multiple sclerosis: a population based studySreeram V Ramagopalan
Wellcome Trust Centre for Human Genetics, University of Oxford, Oxford, UK
J Neurol Sci 307:162-3. 2011..Frequency of infant day care attendance was compared for index cases and controls and the results were not statistically significant. Exposure to other infants during early childhood thus does not appear to be a risk factor for MS...
A genome-wide scan in forty large pedigrees with multiple sclerosisCristen J Willer
Wellcome Trust Centre for Human Genetics, University of Oxford, Oxford, UK
J Hum Genet 52:955-62. 2007..30. The inability to find significant linkage in these highly penetrant families suggests that linkage is not the optimal tool for dissecting the inheritance of MS...
Variants in ST8SIA1 do not play a major role in susceptibility to multiple sclerosis in Canadian familiesSreeram V Ramagopalan
Wellcome Trust Centre for Human Genetics, Oxford, UK
J Neuroimmunol 212:142-4. 2009..No significant association was found in the entire sample or when stratifying by transmitting parent, indicating that this gene plays little or no role in susceptibility to MS in the Canadian population...
Congenital abnormalities and multiple sclerosisSreeram V Ramagopalan
Wellcome Trust Centre for Human Genetics, University of Oxford, Oxford, OX3 7BN, UK
BMC Neurol 10:115. 2010..A possible marker for this intrauterine insult is the presence of a non-fatal congenital anomaly...
Multiple sclerosis: risk factors and their interactionsGiulio Disanto
Wellcome Trust Centre for Human Genetics, University of Oxford, Roosevelt Drive, Headington, Oxford, UK
CNS Neurol Disord Drug Targets 11:545-55. 2012..Current evidence suggests that a large part of MS could be prevented and understanding how and when during life risk factors act will ultimately aid the development of prevention strategies...
Vitamin D-gene interactions in multiple sclerosisAntonio J Berlanga-Taylor
Wellcome Trust Centre for Human Genetics, University of Oxford, Headington, Oxford, OX3 7BN, UK
J Neurol Sci 311:32-6. 2011..In this review we aim to highlight the importance of the interaction between vitamin D and MS associated genes which provide a biological basis for the association between vitamin D and MS risk...
Seasonal distribution of psychiatric births in EnglandGiulio Disanto
Wellcome Trust Centre for Human Genetics, University of Oxford, Oxford, United Kingdom
PLoS ONE 7:e34866. 2012..48E-05; BAD p = 0.019; RDD p = 0.015). This data has implications for future strategies of disease prevention...
The genetics of clinical outcome in multiple sclerosisSreeram V Ramagopalan
Wellcome Trust Centre for Human Genetics, University of Oxford, Oxford, UK
J Neuroimmunol 201:183-99. 2008..Recent studies implicating the role of the genotype and epistatic interactions in the MHC in determining outcome are highlighted...
Geography of hospital admissions for multiple sclerosis in England and comparison with the geography of hospital admissions for infectious mononucleosis: a descriptive studySreeram V Ramagopalan
Wellcome Trust Centre for Human Genetics, University of Oxford, Oxford, UK
J Neurol Neurosurg Psychiatry 82:682-7. 2011....
No effect of preterm birth on the risk of multiple sclerosis: a population based studySreeram V Ramagopalan
Wellcome Trust Centre for Human Genetics, University of Oxford, Roosevelt Drive, Headington, Oxford, OX3 7BN, UK
BMC Neurol 8:30. 2008..Here, in a population-based cohort, we investigate whether preterm birth increases the risk to subsequently develop MS...
Meta-analysis of the relationship between multiple sclerosis and migraineJulia Pakpoor
Wellcome Trust Centre for Human Genetics, University of Oxford, Roosevelt Drive, Headington, Oxford, United Kingdom
PLoS ONE 7:e45295. 2012..By meta-analysing all available data we aimed to establish an overall estimate of any association in order to more accurately inform clinicians and care-givers about a potential association between MS and migraine...
Season of birth and anorexia nervosaGiulio Disanto
Wellcome Trust Centre for Human Genetics, University of Oxford and Department of Clinical Neurology, University of Oxford, John Radcliffe Hospital, Oxford, UK
Br J Psychiatry 198:404-5. 2011..8, 95% CI 0.68-0.94, P = 0.007). These results indicate that environmental risk factor(s) are operative during gestation or immediately after birth and their identification will be important for disease prevention strategies...
Epigenetic mechanisms in multiple sclerosis and the major histocompatibility complex (MHC)Amy M Burrell
Wellcome Trust Centre for Human Genetics, University of Oxford, Oxford, OX3 7BN, United Kingdom
Discov Med 11:187-96. 2011..Differences in epigenetic marks characterize monozygotic twin pairs and may explain discordance. There is promise of potential therapeutic strategies to be found in the epigenetic mechanisms at work in MS...
Smoking and multiple sclerosis: an updated meta-analysisAdam E Handel
Wellcome Trust Centre for Human Genetics, University of Oxford, Oxford, United Kingdom
PLoS ONE 6:e16149. 2011..A previous meta-analysis suggested that smoking was an important risk factor for MS but many other studies have been published since then...
Multiple sclerosis, vitamin D, and HLA-DRB1*15Lahiru Handunnetthi
Wellcome Trust Centre for Human Genetics and the Department of Clinical Neurology, University of Oxford, Oxford, UK
Neurology 74:1905-10. 2010..Such interactions may hold the key for disease prevention...
Epigenetics: molecular mechanisms and implications for diseaseAdam E Handel
Wellcome Trust Centre for Human Genetics, University of Oxford, Oxford, United Kingdom
Trends Mol Med 16:7-16. 2010..Here, we consider how growing knowledge of epigenetics is altering our understanding of biology and medicine, and its implications for future research...
Epstein-Barr virus, latitude and multiple sclerosisGiulio Disanto
Wellcome Trust Centre for Human Genetics, University of Oxford, Oxford, UK
Mult Scler 19:362-5. 2013..06, 95% CI = 1.02-1.09, p = 0.002). Latitude-related factors may be implicated in the immune response to EBV and its role in MS aetiology...
Is Lamarckian evolution relevant to medicine?Adam E Handel
Wellcome Trust Centre for Human Genetics, University of Oxford, Roosevelt Drive, Headington, Oxford, OX3 7BN, UK
BMC Med Genet 11:73. 2010..These theories centre on the tendency for complexity to increase in organisms over time and the direct transmission of phenotypic traits from parents to offspring...
Genes for multiple sclerosisSreeram V Ramagopalan
Wellcome Trust Centre for Human Genetics, Oxford, UK
Lancet 371:283-5. 2008
Type 1 diabetes mellitus and multiple sclerosis: common etiological featuresAdam E Handel
Wellcome Trust Centre for Human Genetics, University of Oxford, Oxford, UK
Nat Rev Endocrinol 5:655-64. 2009..Similarities and differences between these two diseases draw attention to shared disease pathways but insights into each disorder are providing mutual illumination of their pathogenesis...
The effect of single nucleotide polymorphisms from genome wide association studies in multiple sclerosis on gene expressionAdam E Handel
Wellcome Trust Centre for Human Genetics, University of Oxford, Oxford, United Kingdom
PLoS ONE 5:e10142. 2010..We investigated whether these genetic variations were associated with alteration in gene expression...
Epidemiology of multiple sclerosisSreeram V Ramagopalan
The Wellcome Trust Centre for Human Genetics, University of Oxford, Roosevelt Drive, Oxford OX3 7BN, UK
Neurol Clin 29:207-17. 2011..It seems unlikely that MS results from a single causative event, but rather is the result of genetic and environmental factors and the interactions thereof. This article discusses the epidemiology of MS...
The risk of developing multiple sclerosis in individuals seronegative for Epstein-Barr virus: a meta-analysisJulia Pakpoor
Wellcome Trust Centre for Human Genetics, University of Oxford, UK
Mult Scler 19:162-6. 2013..06. Given the potential importance of this finding, we aimed to establish a more precise OR for adult and paediatric onset MS in EBV seronegative individuals...
The emerging role of vitamin D binding protein in multiple sclerosisGiulio Disanto
Wellcome Trust Centre for Human Genetics, University of Oxford, Roosevelt Drive, Headington, Oxford OX3 7BN, UK
J Neurol 258:353-8. 2011..Further studies are needed to elucidate the potential use of DBP as a biological marker of MS course, but may be of use given the current lack of diagnostic tools for the prediction of MS development and progression...
Protein-protein interaction analysis highlights additional loci of interest for multiple sclerosisGiammario Ragnedda
Wellcome Trust Centre for Human Genetics, University of Oxford, Oxford, United Kingdom
PLoS ONE 7:e46730. 2012....
Of mice and men: experimental autoimmune encephalitis and multiple sclerosisAdam E Handel
Wellcome Trust Centre for Human Genetics, University of Oxford, Oxford, UK
Eur J Clin Invest 41:1254-8. 2011..Research using experimental autoimmune encephalitis (EAE) models accounts for almost 20% of the papers. published in multiple sclerosis (MS)...
Clinical prognostic factors in multiple sclerosis: a natural history reviewAlexandra Degenhardt
Department of Clinical Neurology, University of Oxford, Oxford, UK
Nat Rev Neurol 5:672-82. 2009..Onset of progression, relapse rate and disability in the initial 5 years could be fruitful therapeutic targets; however, longer-term clinical trials will be required to justify these end points...
The epidemiology of multiple sclerosis in Scotland: inferences from hospital admissionsAdam E Handel
Wellcome Trust Centre for Human Genetics, University of Oxford, Oxford, United Kingdom
PLoS ONE 6:e14606. 2011..In this study we undertook a study of medical records across Scotland on an NHS health board level of resolution to examine the epidemiology of MS in this region...
Sex ratio of infectious mononucleosis and possible relevance to multiple sclerosisSreeram V Ramagopalan
Wellcome Trust Centre for Human Genetics, University of Oxford, Oxford, UK
Mult Scler 19:359-61. 2013..03, 95% CI 0.99-1.08). This intriguing aspect of IM epidemiology in adolescence, the atypical female excess, may be linked to the sex ratio of MS, where females predominate from adolescence...
Genetic epidemiology: the use of old and new tools for multiple sclerosisSreeram V Ramagopalan
Wellcome Trust Centre for Human Genetics and Department of Clinical Neurology, University of Oxford, Roosevelt Drive, Headington, Oxford, OX3 7BN, UK
Trends Neurosci 31:645-52. 2008..Family-based data in multiple sclerosis are applicable to other neurological traits...
Epstein-Barr virus and multiple sclerosis: association or causation?Julia Pakpoor
Department of Physiology, Anatomy and Genetics and Medical Research Council Functional Genomics Unit, University of Oxford, Oxford, UK
Expert Rev Neurother 13:287-97. 2013..Collectively, the strength of the association between EBV and MS warrants careful development and trial of anti-EBV drugs to observe any effect on MS disease course...
Next-generation sequencing in understanding complex neurological diseaseAdam E Handel
Department of Physiology, Anatomy and Genetics, University of Oxford, UK
Expert Rev Neurother 13:215-27. 2013..The authors highlight particular pitfalls in next-generation sequencing experiments and speculate on both clinical and research applications of these sequencing platforms for complex neurological disorders in the future...
High reprint orders in medical journals and pharmaceutical industry funding: case-control studyAdam E Handel
Wellcome Trust Centre for Human Genetics, University of Oxford, Oxford, UK
BMJ 344:e4212. 2012..To assess the extent to which funding and study design are associated with high reprint orders...
Transmission of class I/II multi-locus MHC haplotypes and multiple sclerosis susceptibility: accounting for linkage disequilibriumMichael J Chao
Department of Clinical Neurology, University of Oxford, John Radcliffe Hospital, Oxford, UK
Hum Mol Genet 16:1951-8. 2007..The frequency of allelic associations not being replicated emphasizes the requirement for constructing multi-locus haplotypes in dissecting associations in regions of tight LD...
Risk of venous thromboembolism in people admitted to hospital with selected immune-mediated diseases: record-linkage studySreeram V Ramagopalan
Wellcome Trust Centre for Human Genetics, University of Oxford, UK
BMC Med 9:1. 2011..We, therefore, decided to study the risk of deep vein thrombosis (DVT) and pulmonary embolism (PE) in people admitted to hospital with a range of immune-mediated diseases...
Contribution of genetic, epigenetic and transcriptomic differences to twin discordance in multiple sclerosisLahiru Handunnetthi
Wellcome Trust Centre for Human Genetics and Department of Clinical Neurology, University of Oxford, Oxford, UK
Expert Rev Neurother 10:1379-81. 2010..No consistent differences in DNA sequence, DNA methylation or gene expression were found. Here we put these findings into context and discuss their significance...
Origins of magic: review of genetic and epigenetic effectsSreeram V Ramagopalan
Wellcome Trust Centre for Human Genetics, University of Oxford, Oxford OX3 7BN
BMJ 335:1299-301. 2007..To assess the evidence for a genetic basis to magic...
Risk of fractures in patients with multiple sclerosis: record-linkage studySreeram V Ramagopalan
Unit of Health Care Epidemiology, Department of Public Health, University of Oxford, Oxford, UK
BMC Neurol 12:135. 2012..Patients with multiple sclerosis (MS) have been reported to be at higher risk of fracture than other people. We sought to test this hypothesis in a large database of hospital admissions in England...
What is Next for the Genetics of Multiple Sclerosis?Sreeram V Ramagopalan
Wellcome Trust Centre for Human Genetics, University of Oxford, OX3 7BN Oxford, UK
Autoimmune Dis 2011:519450. 2011..In 2011, after a number of genome-wide association studies have been completed and have identified approximately 20 new genes for MS, we ask the question-what is next for the genetics of MS?..
Genomewide study of multiple sclerosisSreeram V Ramagopalan
N Engl J Med 357:2199-200; author reply 2200-1. 2007
