Patients who are never smokers with lung adenocarcinoma and have relapsed after treatment with tyrosine kinase inhibitors (TKIs) will be eligible for enrollment. The trial will proceed in two stages. In the safety lead-in stage, 6 patients will be enrolled and treated with the LP-300 co-administered in combination with carboplatin and pemetrexed. In the absence of any safety signals in these patients, the second stage of the trial protocol will begin. This second stage consists of randomizing patients in a 2:1 allocation ratio to one of two arms: investigational arm of carboplatin, pemetrexed, and LP-300 or the standard of care arm of carboplatin and pemetrexed. Treatment of both groups will be on Day 1 of a 21-day cycle. A total of 6 treatment cycles are planned, with the possibility of patients going into a pemetrexed maintenance phase afterwards.
This study is being conducted to determine clinical advantages for LP-300 in combination with carboplatin and pemetrexed in the never smoker patient population. The primary objectives of this study are to determine progression-free survival (PFS) and overall survival (OS) in the study-defined patient population when LP-300 is co-administered with the standard of care chemotherapy drugs carboplatin and pemetrexed compared to carboplatin and pemetrexed alone. This has been designed as a multicenter, open label, phase II trial with 90 patients to be enrolled in the United States.