RASSF3 (Ras Association Domain Family Member 3): RASSF3 is a gene that encodes a tumour suppressor protein involved in regulating the cell cycle, apoptosis, and cellular senescence. It acts as a mediator in signalling pathways related to Ras proteins, which are essential for cell growth, differentiation, and survival. RASSF3 also interacts with microtubules and other cellular structures, helping maintain genomic stability and control mitosis. Through these functions, it plays a role in suppressing tumour growth by inhibiting abnormal cell proliferation.