Homozygosity for the toll-like receptor 2 R753Q single-nucleotide polymorphism is a risk factor for cytomegalovirus disease after liver transplantation

Seung H. Kang, Rima C. Abdel-Massih, Robert A. Brown, Ross A. Dierkhising, Walter K. Kremers, Raymund R. Razonable

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48 Scopus citations


Immunity against cytomegalovirus (CMV) is initiated after its recognition by Toll-like receptor 2 (TLR2). We assessed the association between a single-nucleotide polymorphism (SNP) that impairs TLR2 function and CMV disease in a cohort of 737 liver recipients. Ninety-two of 737 patients (7.1%, 10.9%, 12.3%, and 12.5% by 3, 6, 12, and 24 months, respectively) developed CMV disease. Kaplan-Meier estimation demonstrated an association between TLR2 R753Q SNP homozygosity and CMV disease (P =. 044), especially tissue-invasive CMV disease (P =. 001). A multivariate Cox proportional hazard model that accounted for other significant predictors demonstrated a significant association between TLR2 R753Q SNP homozygosity and tissue-invasive CMV disease (hazard ratio, 3.407; 95% confidence interval, 1.518-7.644; P =. 0029). In conclusion, homozygosity for TLR2 R753Q SNP is a marker for CMV disease risk, especially for tissue-invasive disease, after liver transplantation. This observation supports the critical role of TLR2 in the pathogenesis of CMV disease in humans.

Original languageEnglish (US)
Pages (from-to)639-646
Number of pages8
JournalJournal of Infectious Diseases
Issue number4
StatePublished - Feb 15 2012


ASJC Scopus subject areas

  • Immunology and Allergy
  • Infectious Diseases

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