SLC9A9 and multiple sclerosis: The LD block at BTA1:125550933–125822143 from the GWAS that included DD as one of the traits contained SLC9A9 (solute carrier family 9 member A9) (Lai et al., 2020), which has been implicated in multiple sclerosis in humans through its role in regulating T-cell activation and differentiation to a induce a proinflammatory response (Esposito et al., 2015).