H19 and pachyonychia congenita: Under this premise, relevant studies have demonstrated that several lncRNAs, such as HOTTIP, RP11–567G11.1, HOTAIR, MALAT-1, H19, GAS5, FEZF1-AS1, BANCR, LINC01111, TUG1, and DUXAP8 have a noteworthy potential as theragnostic targets for PC [46,[107], [108], [109]].