The present invention aims to provide a rapid and accurate prediction method for the risk of ham / TSP incidence of HTLV-1 infection.The present invention for solving the above problem is a method for determining the risk of hlv-1 infection in an hlv-1 infection characterized by an amino acid residue of HLA-DRB1 - gb-7. The method of determining the risk of occurrence of the hams / TSP infection of HTLV-1 infection according to the present invention may be used as an index.No selection
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