KIF5B-RET Fusion gene may coincide oncogenic mutations of EGFR or KRAS gene in lung adenocarcinomas..     ///    We examined the KIF5B-RET fusion gene in frozen tissues from 154 surgically resected lung tumors using RT-PCR with direct sequencing and the mutation status of EGFR and KRAS genes using PNA clamping.     ///    The existence of KIF5B-RET fusion gene was identified in 9 patients.     ///    "However, KIF5B-RET fusion gene coincided with EGFR or KRAS mutation in 6 patients. "    ///    We tested KIF5B-RET translocation in Formalin Fixed Paraffin Embedded using fluorescence in situ hybridization.     ///    " The KIF5B-RET rearrangement is detected with the frequency of 1??~??2% in 'triple marker'-negative lung adenocarcinomas, i.e., EGFR, KRAS and EML4-ALK wild type. "    ///    These six pts were also positive for both RET break-apart probes (23.9%) and KIF5B-RET fusion (44.4%).    ///    These six pts were also positive for both RET break-apart probes (23.9%) and KIF5B-RET fusion (44.4%). 