Even though the Swiss Prot database did not indicate that TLR2 site 126 is within a functionally relevant region of the TLR2 protein, the LRR4 within which TLR2 site 126 is located may be of functional relevance given that it contains TLR2 site 136, where amino acid substitution (Pro136Ala) is associated with the prevalence of pneumonia in pigs (Uenishi et al. 2011). Here, TLR2 is linked to pneumonia.