 To investigate whether there are NUP98-HOXA, NUP98-HOXB, NUP98-HOXC, NUP98-HOXD fusion genes in leukemia patients in Xinjiang, cellular total RNA was extracted from the bone marrow mononuclear cells, the formaldehyde-agarose gel electrophoresis was used to judge whether RNA was intact, the 17 RT-PCR primers were designed to amplify the predicted fusion junctions and 412 bp GAPDH was used as an internal control, NUP98-HOXA fusion genes were amplified by nested-PCR following reverse transcription. 