A characteristic SYT-SSX fusion gene resulting from the chromosomal translocation t(X;18)(p11;q11) is detectable in almost all synovial sarcomas.     ///    SYT-SSX gene fusion as a determinant of morphology and prognosis in synovial sarcoma..     ///    We attempted to determine the influence of the two alternative forms of the SYT-SSX fusion gene on tumor morphology and clinical outcome in patients with this sarcoma.     ///    The type of SYT-SSX fusion transcript correlates with both the histologic subtype and the clinical behavior of synovial sarcoma.     ///    SYT-SSX fusion transcripts are a defining diagnostic marker of synovial sarcomas and may also yield important independent prognostic information..     ///    We analyzed SYT-SSX fusion transcripts in 45 synovial sarcomas (33 monophasic and 12 biphasic) by the reverse-transcriptase polymerase chain reaction and compared the results with relevant clinical and pathological data.     ///    "There were no significant correlations between the type of SYT-SSX transcript and age, sex, tumor location and size, whether there were metastases at diagnosis, or whether patients underwent chemotherapy. "