Research Topics
Genomes and Genes | Philippe LemeySummaryAffiliation: Katholieke Universiteit Leuven Country: Belgium Publications
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Publications
Role of viral evolutionary rate in HIV-1 disease progression in a linked cohortMeriet Mikhail
Center for Virus Research, Westmead Millennium Institute, Westmead Hospital, The University of Sydney, Westmead NSW 2145, Sydney, Australia
Retrovirology 2:41. 2005..By conducting 15 near full-length genome (8.7 kb) analysis from longitudinally derived patient PBMC samples enabled us to investigate the extent of molecular factors, which govern HIV disease progression...
A Bayesian statistical analysis of human T-cell lymphotropic virus evolutionary ratesPhilippe Lemey
Rega Institute for Medical Research, Minderbroedersstraat 10, Katholieke Universiteit Leuven, B 3000 Leuven, Belgium
Infect Genet Evol 5:291-8. 2005..Statistical uncertainty burdens HTLV rate estimates based on both anthropological calibrations and on pedigree data; the former method rests on an untested assumption, whilst that latter is affected by small sample sizes...
Molecular testing of multiple HIV-1 transmissions in a criminal casePhilippe Lemey
Rega Institute, KULeuven, B 3000 Leuven, Belgium
AIDS 19:1649-58. 2005..To test the a priori hypothesis of HIV-1 transmission from one suspect to six recipients in a criminal case...
Evolutionary dynamics of human retroviruses investigated through full-genome scanningPhilippe Lemey
Rega Institute for Medical Research, KULeuven, Leuven, Belgium
Mol Biol Evol 22:942-51. 2005..Several evolutionary and statistical assumptions, examined using a Bayesian coalescent method, were shown to have little influence on our inference...
Tracing the origin and history of the HIV-2 epidemicPhilippe Lemey
Rega Institute for Medical Research, Katholieke Universiteit Leuven, Belgium
Proc Natl Acad Sci U S A 100:6588-92. 2003....
Phylogeography takes a relaxed random walk in continuous space and timePhilippe Lemey
Department of Microbiology and Immunology, Katholieke Universiteit Leuven, Leuven, Belgium
Mol Biol Evol 27:1877-85. 2010....
Molecular evolutionary analysis and mutational pattern of full-length genomes of hepatitis B virus isolated from Belgian patients with different clinical manifestationsMahmoud Reza Pourkarim
Laboratory of Clinical Virology, Rega Institute for Medical Research, Leuven, Belgium
J Med Virol 82:379-89. 2010..The highest degree of genetic diversity was detected in HBV genotype D. In addition, this study reveals the circulation of exotic HBV genotypes B, C, and E in Belgium. J. Med. Virol. 82:379-389, 2010. (c) 2010 Wiley-Liss, Inc...
Molecular characterization of hepatitis B virus strains circulating in Belgian patients co-infected with HIV and HBV: overt and occult infectionMahmoud Reza Pourkarim
Laboratory of Clinical Virology, Rega Institute for Medical Research, Katholieke Universiteit, Leuven, Belgium
J Med Virol 83:1876-84. 2011....
Analysis of the serotype and genotype correlation of VP1 and the 5' noncoding region in an epidemiological survey of the human enterovirus B speciesInge Thoelen
Laboratory of Clinical and Epidemiological Virology, Department of Microbiology and Immunology, Rega Institute for Medical Research, University of Leuven, Leuven, Belgium
J Clin Microbiol 42:963-71. 2004..g., primer choice), provided some background knowledge on the local spectrum of enteroviruses already exists...
Complete genome sequence of Montana Myotis leukoencephalitis virus, phylogenetic analysis and comparative study of the 3' untranslated region of flaviviruses with no known vectorNathalie Charlier
Laboratory of Virology and Chemotherapy, Rega Institute for Medical Research, Minderbroedersstraat 10, B 3000 Leuven, Belgium
J Gen Virol 83:1875-85. 2002..The availability of this latter sequence motif allows us to designate a virus as either an NKV or a vector-borne flavivirus...
Genomic characterization of novel dolphin papillomaviruses provides indications for recombination within the PapillomaviridaeAnnabel Rector
Laboratory of Clinical Virology, Department of Microbiology and Immunology, Rega Institute for Medical Research, University of Leuven, Minderbroedersstraat 10, 3000 Leuven, Belgium
Virology 378:151-61. 2008....
Evolutionary history of the closely related group 2 coronaviruses: porcine hemagglutinating encephalomyelitis virus, bovine coronavirus, and human coronavirus OC43Leen Vijgen
Laboratory of Clinical and Epidemiological Virology, Department of Microbiology and Immunology, Rega Institute for Medical Research, University of Leuven, Minderbroedersstraat 10, B 3000 Leuven, Belgium
J Virol 80:7270-4. 2006..Using a relaxed molecular clock approach, we reconstructed the evolutionary relationships between PHEV, BCoV, and HCoV-OC43 in real-time units, which indicated relatively recent common ancestors for these species-specific coronaviruses...
The molecular population genetics of HIV-1 group OPhilippe Lemey
Rega Institute for Medical Research, KULeuven, B 3000 Leuven, Belgium
Genetics 167:1059-68. 2004..In addition, we show that evolutionary rate estimates for different HIV genes accurately reflect differential selective constraints along the HIV genome...
Novel hepatitis B virus subgenotype A6 in African-Belgian patientsMahmoud Reza Pourkarim
Laboratory of Clinical Virology, Rega Institute for Medical Research, University of Leuven, Minderbroedersstraat 10, BE 3000 Leuven, Belgium
J Clin Virol 47:93-6. 2010..Genome diversity of hepatitis B virus (HBV) is prominent among DNA viruses; which, allowed the virus to be genetically classified into eight genotypes and several subgenotypes...
Estimating the relative contribution of dNTP pool imbalance and APOBEC3G/3F editing to HIV evolution in vivoKoen Deforche
Rega Institute for Medical Research, Katholieke Universiteit Leuven, Leuven, Belgium
J Comput Biol 14:1105-14. 2007....
Bayesian phylogeography finds its rootsPhilippe Lemey
Department of Microbiology and Immunology, Katholieke Universiteit Leuven, Leuven, Belgium
PLoS Comput Biol 5:e1000520. 2009..From these analyses, we conclude that our phylogeographic framework will make an important asset in molecular epidemiology that can be easily generalized to infer biogeogeography from genetic data for many organisms...
Phylogenetic analysis of hepatitis B virus full-length genomes reveals evidence for a large nosocomial outbreak in BelgiumMahmoud Reza Pourkarim
Laboratory of Clinical Virology, Rega Institute for Medical Research, Leuven, Belgium
J Clin Virol 46:61-8. 2009..Despite increased safety efforts, nosocomial acquired hepatitis B infection remains problematic...
Are hepatitis B virus "subgenotypes" defined accurately?Mahmoud Reza Pourkarim
Laboratory of Clinical Virology, Rega Institute for Medical Research, University of Leuven, Minderbroedersstraat 10, B3000 Leuven, Belgium
J Clin Virol 47:356-60. 2010..Recently, several novel hepatitis B virus (HBV) subgenotypes have been introduced that do not meet proper definition of "subgenotypes". In particular for HBV genotype A, such novel subgenotypes have been reported...
Circulation of genetically distinct contemporary human coronavirus OC43 strainsLeen Vijgen
Laboratory of Clinical and Epidemiological Virology, Department of Microbiology and Immunology, Rega Institute for Medical Research, University of Leuven, Belgium
Virology 337:85-92. 2005..We here describe specific characteristics associated with circulating HCoV-OC43 strains, and we provide substantial evidence for the genetic variability of HCoV-OC43...
Complete genomic sequence of human coronavirus OC43: molecular clock analysis suggests a relatively recent zoonotic coronavirus transmission eventLeen Vijgen
Laboratory of Clinical and Epidemiological Virology, Department of Microbiology and Immunology, Rega Institute for Medical Research, University of Leuven, Minderbroedersstraat 10, BE 3000 Leuven, Belgium
J Virol 79:1595-604. 2005....
Full-genome analysis of a highly divergent simian T-cell lymphotropic virus type 1 strain in Macaca arctoidesSonia Van Dooren
Laboratory for Clinical and Epidemiological Virology, Rega Institute for Medical Research, Katholieke Universiteit Leuven, Minderbroedersstraat 10, B 3000 Leuven, Belgium
J Gen Virol 86:1953-9. 2005..Full-genome molecular-clock analysis supports an archaic introduction of STLV-1 on the Asian continent, at least 269 000-156 000 years ago...
Isolation and cloning of the raccoon (Procyon lotor) papillomavirus type 1 by using degenerate papillomavirus-specific primersAnnabel Rector
Laboratory of Clinical and Epidemiological Virology, Rega Institute for Medical Research, University of Leuven, Minderbroedersstraat 10, B 3000 Leuven, Belgium
J Gen Virol 86:2029-33. 2005..Phylogenetic analysis places PlPV-1 together with COPV and FdPV-1 in a monophyletic branch which encompasses the Lambda papillomavirus genus...
A genotypic resistance assay for the detection of drug resistance in the human immunodeficiency virus type 1 envelope geneKristel Van Laethem
Rega Institute for Medical Research and University Hospitals Leuven, Microbiology and Immunology, Clinical and Epidemiological Virology, AIDS Reference Laboratory, Minderbroedersstraat 10, Leuven 3000, Belgium
J Virol Methods 123:25-34. 2005..This study demonstrates that the assay is able to genotype genetically diverse HIV-1 strains with a good sensitivity...
Genetic variability and molecular evolution of the human respiratory syncytial virus subgroup B attachment G proteinKalina T Zlateva
Laboratory of Clinical and Epidemiological Virology, Department of Microbiology and Immunology, Rega Institute for Medical Research, University of Leuven, Minderbroedersstraat 10, B-3000 Leuven, Belgium
J Virol 79:9157-67. 2005..HRSV-A and -B strains have similar phylodynamic patterns: both subgroups are characterized by global spatiotemporal strain dynamics, where the high infectiousness of HRSV permits the rapid geographic spread of novel strain variants...
Ancient papillomavirus-host co-speciation in FelidaeAnnabel Rector
Laboratory of Clinical and Epidemiological Virology, Rega Institute for Medical Research, University of Leuven, Leuven, Belgium
Genome Biol 8:R57. 2007....
Recombination confounds the early evolutionary history of human immunodeficiency virus type 1: subtype G is a circulating recombinant formAna B Abecasis
Katholieke Universiteit Leuven, Laboratory for Clinical and Epidemiological Virology, AIDS Reference Laboratory, Rega Institute and University Hospitals, Minderbroedersstraat 10, B 3000 Leuven, Belgium
J Virol 81:8543-51. 2007..We suggest a reanalysis of all pure subtypes and CRFs in order to better understand how high rates of recombination have influenced HIV-1 evolutionary history...
Investigating the origin and spread of hepatitis C virus genotype 5aJannick Verbeeck
Laboratory of Clinical and Epidemiological Virology, Rega Institute for Medical Research, University of Leuven, Minderbroedersstraat 10, BE-3000 Leuven, Belgium
J Virol 80:4220-6. 2006..These findings have major implications for tracing the origin of HCV genotype 5a. Here, we speculate about the possible origins of these clusters...
Estimating the individualized HIV-1 genetic barrier to resistance using a nelfinavir fitness landscapeKristof Theys
Rega Institute for Medical Research, Katholieke Universiteit Leuven, Leuven, Belgium
BMC Bioinformatics 11:409. 2010..By simulation of evolution over this landscape, the individualized genetic barrier to NFV resistance may be estimated for an isolate...
Covering all bases in HIV research: unveiling a hidden world of viral evolutionBram Vrancken
Rega Institute for Medical Research, Katholieke Universiteit Leuven, Leuven, Belgium
AIDS Rev 12:89-102. 2010..We also highlight some of the bioinformatics challenges, as well as advantages and potential limitations of this "deep" sequencing tool, and hint at future research applications...
Identifying recombinants in human and primate immunodeficiency virus sequence alignments using quartet scanningPhilippe Lemey
Rega Institute, Katholieke Universiteit Leuven, Minderbroedersstraat 10, 3000 Leuven, Belgium
BMC Bioinformatics 10:126. 2009..We compare the quartet approach with triplet-based methods that employ additional heuristic tests to identify parental and recombinant sequences...
Site stripping based on likelihood ratio reduction is a useful tool to evaluate the impact of non-clock-like behavior on viral phylogenetic reconstructionsPhilippe Lemey
Rega Institute for Medical Research, KU Leuven, Minderbroedersstraat 10, B 3000, Leuven, Belgium
FEMS Immunol Med Microbiol 39:125-32. 2003..Our method was able to rapidly recover clock-like behavior and to indicate the presence and direction of a bias when estimates of divergence times using the unstripped data were flawed...
Phylodynamics of the HIV-1 CRF02_AG clade in CameroonNuno R Faria
Rega Institute for Medical Research, Katholieke Universiteit Leuven, Leuven, Belgium
Infect Genet Evol 12:453-60. 2012....
Molecular evolution and circulation patterns of human respiratory syncytial virus subgroup a: positively selected sites in the attachment g glycoproteinKalina T Zlateva
Laboratory of Clinical and Epidemiological Virology, Department of Microbiology and Immunology, Rega Institute for Medical Research, University of Leuven, Leuven, Belgium
J Virol 78:4675-83. 2004..The evolutionary rate of HRSV subgroup A isolates was estimated to be 1.83 x 10(-3) nucleotide substitutions/site/year, projecting the most recent common ancestor back to the early 1940s...
Phylodynamic analyses of rotavirus genotypes G9 and G12 underscore their potential for swift global spreadJelle Matthijnssens
Laboratory of Clinical and Epidemiological Virology, Department of Microbiology and Immunology, Rega Institute for Medical Research, University of Leuven, Leuven, Belgium
Mol Biol Evol 27:2431-6. 2010..g., a vaccine escape mutant) can spread worldwide in little more than a decade. These results re-emphasize the need for thorough and continued RV surveillance in order to detect such potential spreading events at an early stage...
Molecular typing and epidemiology of enteroviruses identified from an outbreak of aseptic meningitis in Belgium during the summer of 2000Inge Thoelen
Laboratory of Clinical and Epidemiological Virology, Department of Microbiology and Immunology, Rega Institute for Medical Research, University of Leuven, Belgium
J Med Virol 70:420-9. 2003..The RT-nested PCR strategy, carried out directly on clinical samples, is a simple and rapid method for adequate molecular typing of the Group B enteroviruses causing aseptic meningitis...
SPREAD: spatial phylogenetic reconstruction of evolutionary dynamicsFilip Bielejec
Rega Institute for Medical Research, Clinical and Epidemiological Virology Section, Katholieke Universiteit Leuven, Leuven, Belgium
Bioinformatics 27:2910-2. 2011..AVAILABILITY: SPREAD is licensed under the GNU Lesser GPL and its source code is freely available as a GitHub repository: https://github.com/phylogeography/SPREAD CONTACT: filip.bielejec@rega.kuleuven.be...
Phylogenetic reconstruction of a known HIV-1 CRF04_cpx transmission network using maximum likelihood and Bayesian methodsDimitrios Paraskevis
National Retrovirus Reference Center, Department of Hygiene and Epidemiology, Athens University Medical School, Athens, Greece
J Mol Evol 59:709-17. 2004..For patients with known infection dates, the estimated dates of the coalescent events obtained using molecular clock calculations based on a newly developed Bayesian method in gag + env were in agreement with the actual infection dates...
Accurate model selection of relaxed molecular clocks in bayesian phylogeneticsGuy Baele
Department of Microbiology and Immunology, Rega Institute, KU Leuven, Leuven, Belgium
Mol Biol Evol 30:239-43. 2013..We also illustrate the importance of using proper priors on a large set of empirical data sets...
Simultaneously reconstructing viral cross-species transmission history and identifying the underlying constraintsNuno Rodrigues Faria
Department of Microbiology and Immunology, Rega Institute, KU Leuven, Leuven, Belgium
Philos Trans R Soc Lond B Biol Sci 368:20120196. 2013..Although our evolutionary framework focused on the multi-host reservoir dynamics of bat rabies virus, it is applicable to other pathogens and to other discrete state transition processes...
Circulation of HRSV in Belgium: From Multiple Genotype Circulation to Prolonged Circulation of Predominant GenotypesLieselot Houspie
Laboratory of Clinical Virology, Rega Institute for Medical Research, University of Leuven, Leuven, Belgium
PLoS ONE 8:e60416. 2013..The emergence of the GB13 genotype resulted in a newly established balance between the predominant genotypes...
Toward a quantitative understanding of viral phylogeographyNuno Rodrigues Faria
Department of Microbiology and Immunology, Katholieke Universiteit Leuven, Leuven, Belgium
Curr Opin Virol 1:423-9. 2011..We also outline future areas of research and discuss how these may contribute to a quantitative understanding of the phylodynamics of RNA viruses...
Complete genome sequence, taxonomic assignment, and comparative analysis of the untranslated regions of the Modoc virus, a flavivirus with no known vectorPieter Leyssen
Rega Institute for Medical Research, Katholieke Universiteit Leuven, B 3000 Leuven, Belgium
Virology 293:125-40. 2002..Also the putative secondary structure of circularized MODV RNA is presented...
Phylogenetic classification of TT virus groups based on the N22 region is unreliablePhilippe Lemey
Rega Institute for Medical Research, KULeuven, Minderbroedersstraat 10, B-3000, Belgium
Virus Res 85:47-59. 2002..We suggest that care should be taken in future TTV phylogenetic analysis, in particular, larger and more conserved regions should be sequenced to allow between group comparisons...
A counting renaissance: combining stochastic mapping and empirical Bayes to quickly detect amino acid sites under positive selectionPhilippe Lemey
Department of Microbiology and Immunology, Rega Institute, KU Leuven, B 3000 Leuven, Belgium
Bioinformatics 28:3248-56. 2012..We illustrate the utility of our method using human immunodeficiency virus, feline panleukopenia and canine parvovirus evolution examples...
Improving the accuracy of demographic and molecular clock model comparison while accommodating phylogenetic uncertaintyGuy Baele
Department of Microbiology and Immunology, KU Leuven, Leuven, Belgium
Mol Biol Evol 29:2157-67. 2012..The methods used in this article are now available in BEAST, a powerful user-friendly software package to perform Bayesian evolutionary analyses...
Phylogeographical footprint of colonial history in the global dispersal of human immunodeficiency virus type 2 group ANuno R Faria
Rega Institute, Katholieke Universiteit Leuven, Leuven, Belgium
J Gen Virol 93:889-99. 2012..We demonstrate that probabilistic models can uncover global patterns of HIV-2A dispersal providing sampling bias is taken into account and we provide a scenario for the international spread of this virus...
High GUD incidence in the early 20 century created a particularly permissive time window for the origin and initial spread of epidemic HIV strainsJoão Dinis de Sousa
Laboratory for Clinical and Evolutionary Virology, Rega Institute for Medical Research, Katholieke Universiteit Leuven, Leuven, Belgium
PLoS ONE 5:e9936. 2010..Our results suggest that intense GUD in promiscuous urban communities was the main factor driving HIV emergence. Low circumcision rates may have played a role, probably by their indirect effects on GUD...
Make the most of your samples: Bayes factor estimators for high-dimensional models of sequence evolutionGuy Baele
Department of Microbiology and Immunology, Rega Institute, KU Leuven, Kapucijnen voer 33 blok I bus 7001, B 3000 Leuven, Belgium
BMC Bioinformatics 14:85. 2013..Most often, each model's marginal likelihood will be estimated individually, which leads the resulting Bayes factor to suffer from errors associated with each of these independent estimation processes...
Phylodynamics of H5N1 avian influenza virus in IndonesiaTommy Tsan Yuk Lam
School of Biological Sciences, The University of Hong Kong, Hong Kong, China
Mol Ecol 21:3062-77. 2012..The phylodynamics we uncover share similarities with other recently studied viral invasions, thereby shedding light on the ecological and evolutionary processes that determine disease emergence in a new geographical region...
Plasma exchange-associated immunoglobulin m-negative hantavirus disease after a camping holiday in southern franceEls Keyaerts
Laboratory of Clinical and Epidemiological Virology, Department of Microbiology and Immunology, Rega Institute for Medical Research, University of Leuven, BE-3000 Leuven, Belgium
Clin Infect Dis 38:1350-6. 2004..This is also the first report of proven NE from the Mediterranean part of France...
Genetic variation in mother-child acute seroconverter pairs from ZambiaFederico G Hoffmann
School of Biological Sciences, University of Nebraska, Lincoln, Nebraska 68588 0666, USA
AIDS 22:817-24. 2008....
Limitations to contact tracing and phylogenetic analysis in establishing HIV type 1 transmission networks in CubaSonia Resik
Tropical Medicine Institute Pedro Kouri, Havana, Cuba
AIDS Res Hum Retroviruses 23:347-56. 2007..Also, superinfection and incomplete epidemiological information are other factors that will limit the concordance of phylogenetic reconstruction and reported epidemiological linkage...
Exploring full-genome sequences for phylogenetic support of HIV-1 transmission eventsPhilippe Lemey
AIDS 19:1551-2. 2005
Genetic analyses reveal structured HIV-1 populations in serially sampled T lymphocytes of patients receiving HAARTSimon J Potter
Retroviral Genetics Laboratory, Center for Virus Research, Westmead Millennium Institute, Westmead Hospital, The University of Sydney, Darcy Road, Westmead, Sydney NSW 2145, Australia
Virology 348:35-46. 2006....
HIV evolutionary dynamics within and among hostsPhilippe Lemey
Department of Zoology, University of Oxford, Oxford, UK
AIDS Rev 8:125-40. 2006..Characterizing the impact of HIV transmission on viral genetic diversity will be a key factor in reconciling the different population genetic processes within and among hosts...
Molecular footprint of drug-selective pressure in a human immunodeficiency virus transmission chainPhilippe Lemey
Department of Zoology, University of Oxford, South Parks Road, Oxford OX1 3PS, United Kingdom
J Virol 79:11981-9. 2005....
U.S. Human immunodeficiency virus type 1 epidemic: date of origin, population history, and characterization of early strainsKenneth E Robbins
Centers for Disease Control and Prevention, Atlanta, Georgia 30333, USA
J Virol 77:6359-66. 2003..Furthermore, the estimated epidemic growth curve shows a period of exponential growth that preceded most of the early documented cases and also indicates a leveling of prevalence rates in the recent past...
HIV-1 compartmentalization in diverse leukocyte populations during antiretroviral therapySimon J Potter
Center for Virus Research, Westmead Millennium Institute, Westmead Hospital, The University of Sydney, Darcy Road, Westmead, Sydney NSW 2145, Australia
J Leukoc Biol 76:562-70. 2004....
Genetic variability of human respiratory coronavirus OC43Leen Vijgen
J Virol 79:3223-4; author reply 3224-5. 2005
Synonymous substitution rates predict HIV disease progression as a result of underlying replication dynamicsPhilippe Lemey
Department of Zoology, University of Oxford, Oxford, United Kingdom
PLoS Comput Biol 3:e29. 2007....
