We further validated the expression of the identified differentially expressed FRGs (CYBB, CTSB, SLC38A1, TLR4, PEX2 and ABCC1) and two FR-lncRNAs (LINC01140 and ZFHX4-AS1) in cultured OFs from TAO patients and healthy controls (Figure 9). This evidence concerns the gene CTSB and thromboangiitis obliterans.