For example, upregulation of circCAMSAP1 induces G2/M phase arrest in nasopharyngeal carcinoma cells [54], and knockdown of circCAMSAP1 induces G1 phase cell cycle arrest in colorectal carcinoma [52]; CAMSAP3 deletion inhibits the expression level of the cell cycle protein D1 and induces G1 cell cycle arrest, which leads to irreversible growth arrest and tumor aggressiveness [27]. Here, CAMSAP3 is linked to colorectal carcinoma.