| ID | Type | Location (GRCh37) | Location (GRCh38) | Length | GC content |
|---|---|---|---|---|---|
| hsa_chr2_0855000 | Intergenic-Intergenic | chr2:55252975-55253262 | chr2:55025839-55026126 | 288 nt | 0.3576 |
| hsa_chr2_0855100 | Intergenic-Intergenic | chr2:55253521-55253759 | chr2:55026385-55026623 | 239 nt | 0.3849 |
| hsa_chr2_0855200 | Intergenic-Intergenic | chr2:55254989-55258158 | chr2:55027853-55031022 | 250 nt | 0.2880 |
| hsa_RTN4_0007400 | Intron-Intron | chr2:55255380-55255601 | chr2:55028244-55028465 | 222 nt | 0.3243 |
| hsa_RTN4_0007500 | Intron-Intron | chr2:55256518-55256899 | chr2:55029382-55029763 | 382 nt | 0.3691 |
| hsa_RTN4_0007600 | Intron-Intron | chr2:55259204-55259621 | chr2:55032068-55032485 | 418 nt | 0.4474 |
| hsa_RTN4_0007700 | Intron-Intron | chr2:55259375-55261524 | chr2:55032239-55034388 | 2150 nt | 0.3833 |
| hsa_RTN4_0007800 | Exon-Exon | chr2:55277069-55277301 | chr2:55049933-55050165 | 233 nt | 0.7682 |
| hsa_RTN4_0007900 | Exon-Exon | chr2:55277089-55277277 | chr2:55049953-55050141 | 189 nt | 0.7831 |
| hsa_chr2_0855300 | Intergenic-Intergenic | chr2:55277293-55277445 | chr2:55050157-55050309 | 69 nt | 0.6232 |
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].