Ongoing efforts also identified ALK fusions in other epithelial malignancies, such as CLIP1-ALK, KIF5B-ALK, and KIAA1217-ALKfusions in renal cell carcinoma [5], BABAM2-ALK fusion in gynecologic clear cell carcinomas [6], STRN-ALK, PPP1R21-ALK, and SENPF-ALK fusions in colorectal carcinoma [7], and STRN-ALK, and TPM1-ALK fusions in peritoneal mesothelioma [8]. The gene discussed is STRN; the disease is peritoneal mesothelioma.