Table 1.

Number of known annotated transcripts and human gene loci collected from Ensembl, NCBI’s RefSeq, UCSC Genome Browser, and Cabili et al.’s lincRNA catalog. A single locus typically contains multiple transcripts, particularly for mRNAs.

Annotation	mRNA	Long ncRNA	Small ncRNA
Transcripts	111,451	89,981	11,366
Loci	20,944	40,765	11,195