PVT1 and pachyonychia congenita: In addition to PVT1 mentioned above, lncRNA histocompatibility leukocyte antigen complex P5 (HCP5) can act as ceRNA to inhibit the expression of miR-214-3p and target heparin binding growth factor (HDGF) to regulate the proliferation, invasion, migration, apoptosis and autophagy of PC cells, thus promoting gemcitabine resistance 237.