| ID | Type | Location (GRCh37) | Location (GRCh38) | Length | GC content |
|---|---|---|---|---|---|
| hsa_RTN4_0003500 | Exon-Exon | chr2:55209651-55254621 | chr2:54982515-55027485 | 139 nt | 0.4173 |
| hsa_RTN4_0002800 | Exon-Intergenic | chr2:55209651-55307775 | chr2:54982515-55080639 | 250 nt | 0.2960 |
| hsa_RTN4_0003700 | Exon-Exon | chr2:55209722-55253251 | chr2:54982586-55026115 | 68 nt | 0.4118 |
| hsa_RTN4_0003800 | Intron-Intron | chr2:55211110-55211287 | chr2:54983974-54984151 | 178 nt | 0.3820 |
| hsa_RTN4_0003900 | Intron-Intron | chr2:55212147-55212537 | chr2:54985011-54985401 | 391 nt | 0.3708 |
| hsa_RTN4_0004400 | Intron-Exon-Intron | chr2:55214627-55224873 | chr2:54987491-54997737 | 239 nt | 0.4728 |
| hsa_RTN4_0004200 | Exon-Exon | chr2:55214627-55254621 | chr2:54987491-55027485 | 2608 nt | 0.3938 |
| hsa_RTN4_0004500 | Exon-Intergenic | chr2:55214627-55307775 | chr2:54987491-55080639 | 208 nt | 0.4760 |
| hsa_RTN4_0004600 | Exon-Exon | chr2:55214673-55214834 | chr2:54987537-54987698 | 162 nt | 0.4753 |
| hsa_RTN4_0004700 | Exon-Exon | chr2:55214789-55237330 | chr2:54987653-55010194 | 154 nt | 0.4221 |
A study in rats demonstrated that the circRTN4 was identified as a putative heroin-associated biomarker via microarray analysis in the orbitofrontal cortex following heroin self-administration, but subsequent validation by qPCR in male and female rats did not show significant regulation [Floris et al. DOI:10.3390/ijms23031453].