Then, the association between the FLI1 expression level, immune infiltration levels of 28 immune cell types, cytolytic activity (CYT), tumour purity, ESTIMATE score, immune score, stromal score, leucocyte fraction, TIL regional fraction, lymphocyte infiltration (LI) signature score and immunomodulators were investigated, and significant correlations were found between them. The gene discussed is FLI1; the disease is neoplasm.