RAB1A and synovial sarcoma: SNP copy number changes were most frequent present in SS case  3, which showed losses of genes of RAB1A (rs10519011, 2p14), VEGFC, FAT, AKR1C3, TRIM16, and PLS3 (rs5987755, Xq23) as well as gains of genes of TAGLN (rs2269397, 11q23.2) and NFIB.