[Sense, LncRNAs are transcribed from the same genomic strand as the protein-coding mRNAs; Intergenic, located between two protein-coding genes and at least 1 kb away from these genes; Antisense, transcribed from the antisense strand; Intronic, located within the intron of protein coding genes; Bidirectional, oriented head to head with a protein-coding gene within 1kb. Arrow direction: 5′ → 3′]