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Hoffmann, R. A wiki for the life sciences where authorship matters. Nature Genetics (2008)
 
 
 
 
 

Detection of SYT-SSX fusion transcripts in synovial sarcoma by reverse transcription-polymerase chain reaction using archival paraffin-embedded tissues.

The reciprocal translocation t(X;18)(p11;q11) is known to be highly characteristic of synovial sarcoma, and its consequence, an SYT-SSX fusion gene, is expected to be a diagnostic molecular marker. In this study, we conducted a reverse transcription-polymerase chain reaction-based assay to detect the SYT-SSX fusion gene transcripts using archival formalin-fixed, paraffin-embedded tumor specimens from a series of 32 synovial sarcoma cases including 6 tumors found in unusual anatomical sites. The SYT-SSX fusion transcripts could be detected in 30 of 32 paraffin-embedded specimens (94%). A subsequent sequence analysis using the polymerase chain reaction products confirmed that the detected messages were derived from either the SYT-SSX1 (22 cases) or SYT-SSX2 (8 cases) fusion gene. Of 23 SYT-SSX-positive monophasic tumors, 16 tumors had an SYT-SSX1 fusion transcript. Fusion transcripts were detectable in all the 7 biphasic tumors analysed, one of which had an SYT-SSX2 fusion transcript. All of the six tumors at unusual locations (lung; 3, metastasis to the abdominal cavity from a tumor of retroperitoneal origin; 1, sacral region; 1, iliopsoas muscle; 1) contained detectable messages. Our results indicate that this molecular assay can be applied to archival formalin-fixed, paraffin-embedded tumor tissues as a feasible and reliable molecular technique for the diagnosis of synovial sarcoma.[1]

References

  1. Detection of SYT-SSX fusion transcripts in synovial sarcoma by reverse transcription-polymerase chain reaction using archival paraffin-embedded tissues. Tsuji, S., Hisaoka, M., Morimitsu, Y., Hashimoto, H., Shimajiri, S., Komiya, S., Ushijima, M., Nakamura, T. Am. J. Pathol. (1998) [Pubmed]
 
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