Abstract: The present invention provides a compound that inhibits activity of oncogenic ROS1, a composition comprising said compound. The present invention also provides the use of said composition for treating cancer.

Abstract: A compound suitable for treating cancer, in particular NSCLC, inhibits activity of oncogenic ROS1 kinase and ALK kinase. The compound has certain structural components such as a quinoline moiety in the backbone and at least one phenyl-containing moiety in a side chain with a hydrophobic substituent attached to the backbone via an up to 6-membered linking group as well as a further hydrophobic moiety. The presence of the structural components allows for an advantageous interaction with the ROS1 kinase domain and, further, with the ALK kinase domain. Hence, said compound represents a highly promising opportunity for patients bearing ROS1- or ALK-dependent cancer. A composition, in particular a pharmaceutical composition, includes the compound. A method for targeting cancer cells harboring an abnormality in ROS1 gene or ALK gene includes contacting a cell with the compound.

Abstract: The present invention discloses that a method of treating cancer, preferably non-small cell lung cancer, comprises administrating mitoxantrone. The present invention also discloses a method of inhibiting ROS1 kinase comprising administrating mitoxantrone. A pharmaceutical composition comprising mitoxantrone is also disclosed.