BCL2 and esophageal squamous cell carcinoma: Kang et al. [34] reported that up-regulated exosome lncRNA PART1 promoted gefitinib resistance as a competing endogenous RNA to bind competitively miRNA-129 to suppress the expression of Bcl-2 in ESCC cells, while knockdown of PART1 potently helped the gefitinib-induced cell apoptosis.