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Species: Human
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circRNA ID Gene Gene Type Strand (circRNA/Gene)
circRNA Type i

The back-fusion junctions (BFJs) of circRNAs from genic regions may have three possible positions relative to the nearest exon-intron boundaries of their cognate linear transcripts, giving rise to three circRNA subtypes:

(1) canonical (or completely boundary) circRNAs with both BFJs aligning to exon-intron boundaries;

(2) half interior (or half boundary) circRNAs with one, but not both, of the BFJs aligning to exon-intron boundaries;

(3) complete interior (or non-boundary) circRNAs with both junctions appearing inside of exons or introns.

Lariats are byproducts of splicing and can be regarded as variants of canonical circRNAs; for clarity, we list lariats separately here.

Intergenic circRNAs, derived from intergenic regions that often encode poorly annotated noncoding transcripts, can be considered a new distinct subtype of their own.

We collectively refer to complete interior, half interior, and intergenic circRNAs as noncanonical circRNAs (nc-circRNAs) to distinguish them from canonical circRNAs (c-circRNAs).

CircRNA Types Diagram
Position Length Species
7SK/6:52995783-52995787-52995625-52995629-+/+ 7SK misc_RNA +/+ interior 6:52995787-52995629 158.0 Human
7SK/6:52995789-52995791-52995631-52995633-+/+ 7SK misc_RNA +/+ interior 6:52995791-52995633 158.0 Human
7SK/6:52995791-52995792-52995630-52995631-+/+ 7SK misc_RNA +/+ interior 6:52995792-52995631 161.0 Human
7SK/6:52995794-52995795-52995636-52995637-+/+ 7SK misc_RNA +/+ interior 6:52995794-52995636 158.0 Human
7SK/6:52995794-52995796-52995623-52995625-+/+ 7SK misc_RNA +/+ interior 6:52995796-52995625 171.0 Human
7SK/6:52995805-52995810-52995667-52995672-+/+ 7SK misc_RNA +/+ interior 6:52995805-52995667 138.0 Human
7SK/6:52995819-52995825-52995637-52995643-+/+ 7SK misc_RNA +/+ interior 6:52995825-52995643 182.0 Human
7SK/6:52995823-52995829-52995721-52995727-+/+ 7SK misc_RNA +/+ interior 6:52995823-52995721 102.0 Human
7SK/6:52995825-52995830-52995712-52995717-+/+ 7SK misc_RNA +/+ interior 6:52995825-52995712 113.0 Human
7SK/6:52995826-52995832-52995704-52995710-+/+ 7SK misc_RNA +/+ interior 6:52995826-52995704 122.0 Human