The present invention relates to a bispecific antibody construct comprising a first binding domain which binds to human FLT3 on the surface of a target cell and a second binding domain which binds to human CD3 on the surface of a T cell. Moreover, the invention provides a polynucleotide encoding the antibody construct, a vector comprising said polynucleotide and a host cell transformed or transfected with said polynucleotide or vector. Furthermore, the invention provides a process for the production of the antibody construct of the invention, a medical use of said antibody construct and a kit comprising said antibody construct.本發明係關於一種雙特異性抗體構築體,其包含結合於目標細胞表面上之人類FLT3的第一結合域及結合於T細胞表面上之人類CD3的第二結合域。此外,本發明提供一種編碼該抗體構築體之聚核苷酸、包含該聚核苷酸之載體,及用該聚核苷酸或載體轉型或轉染之宿主細胞。此外,本發明提供一種用於產生本發明之抗體構築體的方法、該抗體構築體之醫療用途,及包含該抗體構築體之套組。