In a synovial sarcoma study, only 2 of 13 tissue samples were positive for EGFR TK mutation, with no EGFR amplification on FISH analysis [36] and a further study on EGFR gene amplification from patients with endometrial stromal sarcoma also showed 10/10 negative results [37]. The gene discussed is EGFR; the disease is endometrioid stromal sarcoma.