ROS1 and pleomorphic xanthoastrocytoma: Including the results of the current series, infantile case (<1‐year‐old of age) of PXA may present ALK, ROS1, NTRK2, and NTRK3 fusions [11, 15, 22], and other cases with NTRK2 [11, 12], and ALK [12] have been described in pediatric age groups.