HOXA9 and colorectal cancer: Lai et al. found that hsa_circ_0079662, which can bind to hsa-miR-324-5p, regulate the target gene HOXA9, and induce resistance to the chemotherapeutic drug OXA in colorectal cancer via the tumor necrosis factor-α (TNF-α) pathway, is upregulated in drug-resistant colorectal cancer cells [145].