RESUMO
We aim to establish a chip-based digital PCR (dPCR) method for detecting copy number variation of the LAPTM4B gene in non-small cell lung cancer (NSCLC), and preliminarily evaluate its basic performance and clinical feasibility. The LAPTM4B gene primers and specific probes were designed to establish a dPCR reaction system. The detection limit, precision, and linearity of the method were verified according to the prepared target DNA samples of different concentrations. The reaction system of dPCR for LAPTM4B gene copy number detection was established and optimized for the first time. The results showed that 12. 5% of LAPTM4B gene copy number deletion could be detected at the lowest level. The coefficient of variation of inter-batch precision was less than 10%, and the linearity of deletion ratio was good in the range of 12. 5%-100% (R