gga-let-7i: Gga-let-7i is a microRNA (miRNA) that has been identified as potentially having a tumor suppressive function in chickens, as its downregulation is associated with tumorigenesis [PMC5065965]. This miRNA, along with gga-let-7b, is implicated in the regulation of multiple signaling pathways, including MAPK, TGF-beta, Notch, Wnt, mTOR, Cell cycle, P53, and Jak–STAT pathways [PMC9201442]. Bioinformatic analyses suggest that gga-let-7i may be targeted by various circRNAs and could be involved in complex regulatory networks influencing these signaling pathways [PMC9504570]. The expression of gga-let-7i has been detected alongside other miRNAs in studies examining miRNA profiles [PMC3406056]. The aberrant expression of gga-let-7i along with other miRNAs has been linked to the presence of the retrovirus ALV-J and its associated tumorigenesis in chickens [PMC5276853].