Colorectal cancer: understanding of disease

Colorectal cancer (CRC) is one of the most frequently diagnosed carcinoma condition. The biological mechanisms of inherited and infrequent CRC are being explored. A few lines of indication prove that lifestyle influences, to some extent, may be accountable for the widely held variability in CRC and contribute to the risk within populations. The different molecular pathways, including the endothelial growth factor receptor (EGFR) pathway, vascular endothelial growth factor receptor pathway, and Wnt pathway, are the important pathways involved in the pathogenesis of CRG and have been discussed broadly in this chapter. Wnt/β-catenin helps in the progression of stem cell-specialized repairing and protection and colonic crypt oocyte proliferation. The major molecular systems and driver genetic mutations implicated in engaging and spreading the cascade of signal transduction that reaches cancer and forceful metastases of CRC are covered in this chapter. Despite the recent advances in therapies, a greater awareness of the molecular strategies and hereditary interference in CRC is supposed to play a significant part in promoting the emergence of novel and targeted treatments with better safety features. Targeted therapy is an innovative additional strategy that has successfully improved CRC patients’ survival rate. Recent developments describing the success of the anti-EGFR agent like CTAb and the antiangiogenesis agent bevacizumab in CRC, blocking numerous significant pathways in the pathogenesis, are being established as major treatment strategies at a rapid rate. Hence, special focus has been given to significant developments in CRC treatments exploring macromolecular targets like KRAS, BRAF, APC, PIK3CA, and PTEN.