A new study conducted at Vanderbilt University School of Medecine tried to gain insights on how SYT-SSX2 disrupts mesenchymal stem cell differentiation which leads to synovial sarcoma:
http://www.ncbi.nlm.nih.gov/pubmed/22594313
The full article can be found here:
http://www.biomedcentral.com/content/pdf/1471-2164-13-189.pdf