CNTN2 and tropical spastic paraparesis: In our study, there were no differences in CD244 expression on CD8+ T cells between ACs and patients with HAM/TSP (Figure 1 B) and expression of CD244 in HTLV-I-infected patients did not show any direct correlation with HTLV-I infection such as HTLV-I proviral load or expression of Tax (data not shown).