FSTL3 and hepatocellular carcinoma: Finally, we collected 40 HCC samples and performed IHC staining to assign scores to FSTL3 expression levels, showing that responsive patients had lower FSTL3 expression than those non-responders (P = 0.023, Fig. 5N), and that patients with elevated FSTL3 levels had a reduced response rate, compared to patients with reduced FSTL3 levels (Fig. 5O).