This suggests that the SYT/SSX fusion gene may regulate SYT expression from the normal allele and as such alter the normal function of SYT..     ///    The SYT/SSX4 and SYT/SSX2 open reading frame also differed from previously reported SYT/SSX sequences by an in-frame addition of 93bp exon located in the junction between exon 7 and 8 of the SYT. 