ATXN3 and Spinocerebellar ataxia type 3: In September 2019, she was diagnosed with HAM/TSP at Fujian Medical University First Affiliated Hospital based on positive HTLV‐1 antibodies in both serum and cerebrospinal fluid, with genetic testing ruling out spinocerebellar ataxia type 3 (SCA3) through normal CAG repeat analysis of the ATXN3 gene.