I-RNA yeSetyhula (i-circRNA) luhlobo lwe-RNA engeyiyo ikhowudi, esandul 'ukufumanisa ukuba idlala indima ebalulekileyo kuthungelwano olulawulayo olubandakanyekayo ekuphuhliseni, ukuchasana nokusingqongileyo, njl njl. Ukwahlukileyo kwi-molecule ye-RNA ecacileyo, umzekelo, i-mRNA, i-lncRNA, i-3 kunye ne-5 iziphelo ze-circRNA zidityaniswe kunye zenze isakhelo sesetyhula, esibasindisa ekugayweni kwe-exonuclease kwaye zizinzile ngakumbi kune-RNA eninzi.I-CircRNA ifunyenwe inemisebenzi eyahlukeneyo yokulawula ukubonakaliswa kofuzo.I-CircRNA inokusebenza njenge-ceRNA, ebopha i-miRNA ngokhuphiswano, eyaziwa ngokuba yi-miRNA sponge.Iqonga lokuhlalutya lolandelelwano lwe-CircRNA lixhobisa ubume be-circRNA kunye nohlalutyo lwentetho, ukuqikelela okujoliswe kuko kunye nohlalutyo oludibeneyo kunye nezinye iintlobo ze-molecule ze-RNA.