The expression of the E2F1 gene in pan-cancer was analyzed using the Tumor IMmune Estimation Resource (TIMER) 2.0 database, and the expression level of E2F1 in HCC was verified using the Gene Expression Profiling Interactive Analysis database. 
TIMER
Subsequently, based on the Encyclopedia of RNA Interactomes (ENCORI) database, we adopted E2F1 as the research objective and identified the target long non-coding RNAs (lncRNAs) and microRNAs that suggested the competing endogenous RNA (ceRNA) mechanisms related to E2F1. 
ENCORI
Finally, the drug sensitivity of E2F1 was detected using the R language package, "pRRophetic."



pRRophetic