Apropos of ponatinib being a potent RET inhibitor, it's very recently been discovered that a RET fusion occurs in about 2% of NSCLC: Identification of new ALK and RET gene fusions from colorectal and lung cancer biopsies Doron Lipson, Marzia Capelletti, Roman Yelensky, Geoff Otto, Alex Parker, Mirna Jarosz, John A Curran, Sohail Balasubramanian, Troy Bloom, Kristina W Brennan, Amy Donahue, Sean R Downing, Garrett M Frampton, Lazaro Garcia, Frank Juhn, Kathy C Mitchell, Emily White, Jared White, Zac Zwirko, Tamar Peretz, Hovav Nechushtan, Lior Soussan-Gutman, Jhingook Kim, Hidefumi Sasaki, Hyeong Ryul Kim et al. AffiliationsContributionsCorresponding authors Nature Medicine (2012) doi:10.1038/nm.2673 Received 07 October 2011 Accepted 13 January 2012 Published online 12 February 2012 Applying a next-generation sequencing assay targeting 145 cancer-relevant genes in 40 colorectal cancer and 24 non–small cell lung cancer formalin-fixed paraffin-embedded tissue specimens identified at least one clinically relevant genomic alteration in 59% of the samples and revealed two gene fusions, C2orf44-ALK in a colorectal cancer sample and KIF5B-RET in a lung adenocarcinoma. Further screening of 561 lung adenocarcinomas identified 11 additional tumors with KIF5B-RET gene fusions (2.0%; 95% CI 0.8–3.1%). Cells expressing oncogenic KIF5B-RET are sensitive to multi-kinase inhibitors that inhibit RET.