Phase I eligible pts had ALK, ROS1, or NTRK1-3 fusion-positive advanced solid tumors...Confirmed partial responses (cPR, RECISTv1.1, n = 8) were observed in TKI-naïve or TKI pre-treated ROS1+/NTRK+ pts at all dose levels....Of the 16 ALK+ pts completed 2 cycles of ropo, 4 had confirmed SD (4 cycles) as best response at data cutoff...Ropotrectinib was well-tolerated and exhibited both intra- and extra-cranial clinical activity in TKI-refractory ROS1+ and NTRK+ pts with SFM-containing tumors.