...three novel RET-positive(RET+) patient-derived cancer cell lines, CUTO22(KIF5B-RET+), CUTO32(KIF5B-RET+) and CUTO42(EML4-RET+)...CUTO22 and CUTO42 cell lines were sensitive to the selective RET inhibitors RXDX-105 and BLU-667...CUTO22 and CUTO42 cell lines had <50nM IC50 values for RXDX-105 and BLU-667...