Official websites use .gov
A
.gov website belongs to an official
government organization in the United States.
Secure .gov websites use HTTPS
A lock (
) or https:// means you've safely
connected to the .gov website. Share sensitive
information only on official, secure websites.
Estimate of change in CEA level from baseline after 4 weeks. Between‐group difference in change was −53%; p = .031.
Abbreviations: CEA, carcinoembryonic antigen; EGFR TKI, epidermal growth factor receptor tyrosine kinase inhibitor; SD, standard deviation.
