KIT (also known as CD117 antigen): KIT is a gene that encodes a protein acting as a receptor tyrosine kinase, vital for cell growth, differentiation, and survival. It plays a key role in the development and function of various cell types, including melanocytes, germ cells, and hematopoietic cells. Understanding KIT signalling pathways may provide insights into targeted treatments for cancers and other diseases involving abnormal KIT activity.