Based on the comprehensive evaluation of the TCR repertoires of Tax301-309-CTLs in HAM patients in the present study and those in ACs and ATL patients previously analyzed (13, 14), we confirmed that PDR is a shared (public) TCR-motif for the HTLV-1 Tax301-309 epitope among HLA-A*24:02+ HTLV-1-infected individuals. The gene discussed is HLA-A; the disease is tropical spastic paraparesis.