TP53 and cervical squamous intraepithelial neoplasia: Furthermore, CIN tumors are associated with the accumulation of mutations at the level of several oncogenes, including KRAS and BRAF and of tumor suppressor genes such as APC and TP53. The meta-analysis of the outcome of more than 10,000 CRC patients clearly indicated that CIN is associated with a worse prognosis [3].