ROS1
ROS1 is a human gene that codes for a receptor tyrosine kinase; a rearrangement of the ROS1 gene is used as a tumor marker in non-small cell lung cancer.
ROS1 is a human gene that codes for a receptor tyrosine kinase, a protein that plays a role in receptor tyrosine phosphorylation signal transduction and is thought to be involved in cell growth or differentiation. A rearrangement of the ROS1 gene is listed by the NCI as a tumor marker analyzed in the tumor in non-small cell lung cancer, where testing is used to help determine treatment.
NCI lists ROS1 gene rearrangement as a tumor marker analyzed in the tumor "to help determine treatment" in non-small cell lung cancer.
This is general information from authoritative sources, not medical advice. What a specific test result means for your case is a question for your treating oncologist.