KRAS and non-small cell lung carcinoma: By identifying six somatic driver mutations of EGFR, KRAS, TP53, BRAF, PIK3CA, and ERBB2 through targeted sequencing utilizing the SV-CA50-ctDNA panel (San Valley Biotech Inc., Beijing, China), Guo et al. reported the changes in tumor and blood ctDNA levels in 41 NSCLC patients before and after surgery.