Toll-like receptors (TLRs) and myeloid differentiation primary response protein 88 (MYD88) gene polymorphisms may be involved in the pathogenesis of Hodgkin's lymphoma (HL) through altered immunoregulatory and inflammatory responses. A candidate-gene association study was conducted to investigate the association between TLR9 À1237T4C, TLR9 2848A4G, MYD88 À938C4A and MYD88 1944C4G gene polymorphisms and the risk for HL. The impact of haplotypes was also examined. The study showed that carriership for À1237C and 2848A was associated with an increased risk for HL (odds ratio (OR)¼2.53 (1.36-4.71) and OR¼6.20 (1.3-28.8)). The MYD88 polymorphisms produced nonsignificant results. The estimated frequencies of the TLR9/1237C-2848A and MYD88/938C-1944G haplotypes were also significantly different between HL and controls (Po0.01). In addition, a significant difference between HL and controls was observed for the TLR9/1237C-TLR9/ 2848A-MYD88/938C-MYD88/1944C haplotypes (Po0.01). In conclusion, our study showed that TLR polymorphisms, and TLR9 and MYD88 haplotypes are related to the development of HL.