Individual PCR amplification and Sanger sequencing of the 3 exons of TRIM56 and the 7 exons of FKBP6 (Ensembl; http://www.ensembl.org/index.html) in all cases (n = 7) and selected Thoroughbred (TB) controls (n = 7) revealed two SNPs in TRIM56, and four SNPs in FKBP6, of which two were non-synonymous (Table 2). Here, TRIM56 is linked to tuberculosis.