A FAS -670A/G single nucleotide polymorphism may be associated with HTLV-1 infection and clinical evolution to TSP/HAM by Ishak Ricardo, Ishak Marluísa O G, Machado Luiz F A, Cayres Vallinoto Izaura M V, Medeiros Sousa Rita C, Hermes Renata, do Espírito Santo Rafaela, dos Santos Ethienne, Santana Bárbara B, Vallinoto Antonio C R