Thus, the aim of this study was to verify the possibility to use RNA purified from cytological specimens to perform KIF5B/RET gene fusion expression analysis.     ///    "Thus, the aim of this study was to verify the possibility to use RNA purified from cytological specimens to perform KIF5B/RET gene fusion expression analysis."    ///    "KIF5B/RET fusion gene analysis in a selected series of cytological specimens of EGFR, KRAS and EML4-ALK wild-type adenocarcinomas of the lung.. "    ///    "In conclusion, our findings confirm that the performance of cytology-based molecular testing for KIF5B/RET rearrangements is at least as effective as histology-based analysis, both with regard to the success rate for nucleic acid isolation and the ability to detect gene alterations. "    ///    "In conclusion, our findings confirm that the performance of cytology-based molecular testing for KIF5B/RET rearrangements is at least as effective as histology-based analysis, both with regard to the success rate for nucleic acid isolation and the ability to detect gene alterations."    ///    The tests conducted revealed the presence of 1 positive patient for variant 1 of KIF5B/RET among the 49 analyzed. 