KIT and uterine corpus sarcoma: In a uterine sarcoma with TMP3-NTRK1 rearrangement, described by Boyle et al., cytokeratins, SMA, desmin, ER, PR, SOX-10, caldesmon, ALK1, CD117 (c-kit), DOG1, CD21 and CD23 were tested and were all negative.