Aaranday-Cortes et al. (2012) and Bhat et al. (2023) found that GZMA was significantly upregulated in cattle with bovine tuberculosis compared to healthy cattle. Interestingly, this gene was more highly expressed in beef cross steers with lower gain than those with higher gain (Lindholm-Perry et al., 2017). A SNP located within 1 Mb of the GZMK gene was associated with the Johne’s disease infection status of Holstein cattle (Mallikarjunappa et al., 2018). Here, GZMK is linked to Tuberculosis, Bovine.