SFRS2-interacting protein protein SCAF11 CASP11 splicing regulatory protein 129 splicing factor, arginine/serine-rich 2-interacting protein SRSF2IP SRSF2-interacting protein renal carcinoma antigen NY-REN-40 SIP1 SRRP129 SFRS2IP serine/arginine-rich splicing factor 2-interacting protein SR-related and CTD-associated factor 11 CTD-associated SR protein 11 SC35-interacting protein 1