HLTF and telomere syndrome: To further determine the importance of these nine genes in STS, their expression levels in STS tissues were explored through the Oncomine database, and four of them were significantly overexpressed compared to normal tissues: helicase-like transcription factor (HLTF), integrin subunit alpha 10 (ITGA10), phospholipase C gamma 1 (PLCG1), and tetratricopeptide repeat domain 3 (TTC3) (Figure S2).