To determine the reason for this discrepancy, we analyzed cDNA from HS-SY-3 cells, as well as the original sarcoma tissue by the rapid amplification of cDNA 3' end assay, and found that the chimaeric cDNA was 240 bp shorter than the previously established SYT/SSX1 cDNA due to truncation of the 3' side of SSX1.     ///    "A new human synovial sarcoma cell line, HS-SY-3, with a truncated form of hybrid SYT/SSX1 gene.. "