The present invention relates to the use of a novel, isolated anti-CXCR4 antibody in the diagnosis of cancer. In particular, methods for diagnosing and/or prognosing an oncogenic disorder associated with CXCR4 expression, are disclosed.本發明係有關於一種新穎、經單離的抗-CXCR4抗體於診斷癌症的用途。特別地,揭示用於診斷及/或預後一種和CXCR4之表現相關的致癌性障礙之方法。