Table 4. Biomarkers of thymic epithelial tumors.

Methods	Thymoma	Thymic carcinoma	Thymic epithelial tumor
Genetic mutation	ZNF721, PABPC1, GTF2I	EGFR, ZNF429, BAP1, ABI1, BCL9L, CHEK2	–
Gene expression	–	–	CLDN4, FGF7, FGF10
Immunohistochemistry	–	CD70, CD8+, CD20+, CD204+, TIIC	SOX9, MAGE-A, NY-ESO-1, MAGE-C1, SAGE, GAGE7
qRT-PCR analysis	–	–	XLOC_003810
Serum concentration	–	–	HSP90α

EGFR, epidermal growth factor receptor; qRT-PCR, quantitative real-time polymerase chain reaction; HSP90α, heat shock protein 90α.