RecruitingDrug trialSavolitinib Plus Docetaxel as 2L in EGFR/ALK/ROS1/MET ex14m-wildtype NSCLC With MET OverexpressionThis is a prospective, pilot, single-arm, single-center study exploring the efficacy and safety of savolitinib plus docetaxel as second-line therapy in patients with MET overexpressed, EGFR/ALK/ROS1/MET ex14m-wildtype advanced NSCLC. Participants will receive treatment of docetaxel (60 mg/m2, ivgtt, q3w) in combination with savolitinib (300mg or 200mg according to safety run-in recommendation, p.o., BID) after informed consent signed. Treatment will continue until either objective disease progression, unacceptable toxicity occurs, consent is withdrawn, other discontinuation criterion is met, or study completion.