TY - JOUR KW - Toll-Like Receptor 1 KW - leprosy AU - Heffelfinger C AU - Pakstis A AU - Speed W AU - Clark AP AU - Haigh E AU - Fang R AU - Furtado MR AU - Kidd KK AU - Snyder M AB - Toll-like receptor 1, when dimerized with Toll-like receptor 2, is a cell surface receptor that, upon recognition of bacterial lipoproteins, activates the innate immune system. Variants in TLR1 associate with the risk of a variety of medical conditions and diseases, including sepsis, leprosy, tuberculosis, and others. The foremost of these is rs5743618 c.2079T>G(p.(Ile602Ser)), the derived allele of which is associated with reduced risk of sepsis, leprosy, and other diseases. Interestingly, 602Ser, which shows signatures of selection, inhibits TLR1 surface trafficking and subsequent activation of NFκB upon recognition of a ligand. This suggests that reduced TLR1 activity may be beneficial for human health. To better understand TLR1 variation and its link to human health, we have typed all 7 high-frequency missense variants (>5% in at least one population) along with 17 other variants in and around TLR1 in 2548 individuals from 56 populations from around the globe. We have also found additional signatures of selection on missense variants not associated with rs5743618, suggesting that there may be multiple functional alleles under positive selection in this gene.European Journal of Human Genetics advance online publication, 4 September 2013; doi:10.1038/ejhg.2013.194. BT - European journal of human genetics : EJHG C1 - http://www.ncbi.nlm.nih.gov/pubmed/24002163?dopt=Abstract DA - 2013 Sep 4 DO - 10.1038/ejhg.2013.194 J2 - Eur. J. Hum. Genet. LA - eng N2 - Toll-like receptor 1, when dimerized with Toll-like receptor 2, is a cell surface receptor that, upon recognition of bacterial lipoproteins, activates the innate immune system. Variants in TLR1 associate with the risk of a variety of medical conditions and diseases, including sepsis, leprosy, tuberculosis, and others. The foremost of these is rs5743618 c.2079T>G(p.(Ile602Ser)), the derived allele of which is associated with reduced risk of sepsis, leprosy, and other diseases. Interestingly, 602Ser, which shows signatures of selection, inhibits TLR1 surface trafficking and subsequent activation of NFκB upon recognition of a ligand. This suggests that reduced TLR1 activity may be beneficial for human health. To better understand TLR1 variation and its link to human health, we have typed all 7 high-frequency missense variants (>5% in at least one population) along with 17 other variants in and around TLR1 in 2548 individuals from 56 populations from around the globe. We have also found additional signatures of selection on missense variants not associated with rs5743618, suggesting that there may be multiple functional alleles under positive selection in this gene.European Journal of Human Genetics advance online publication, 4 September 2013; doi:10.1038/ejhg.2013.194. PY - 2013 T2 - European journal of human genetics : EJHG TI - Haplotype structure and positive selection at TLR1. SN - 1476-5438 ER -