FIRRE and neuroblastoma: Four (LINC00839, FIRRE, DUXAP8, and DSCR8) of the 20 identified lncRNAs are upregulated in stage 4 NB samples, and other 16 lncRNAs (LINC02381, EPHA5‐AS1, LOC101928100, ELOVL2‐AS1, EPB41L4A‐DT, LINC01138, LINC01011, LOC100507557, CASC15, AGPAT4‐IT1, MIAT, TPT1‐AS1, LOC283177, TSC22D1‐AS1, LINC02145, and FAM13A‐AS1) are upregulated in stage 4S NB samples.