The detected RET rearrangements comprised 11 (65%) KIF5B-RET and 6 (35%) CCDC6-RET fusions, including 2 novel fusion variants identified.     ///    Multiplex reverse transcription-polymerase chain reaction (RT-PCR) was used to detect KIF5B-RET and CCDC6-RET fusions from specimens of malignant pleural effusion (MPE) in patients with metastatic lung adenocarcinoma. 