RAB1A is a small GTPase that regulates intracellular membrane trafficking, particularly vesicular protein transport from the endoplasmic reticulum to the Golgi compartment 1. The protein functions in both conventional and unconventional protein secretion pathways, where it enhances TMED10 translocator activity to promote cargo translocation into the ER-Golgi intermediate compartment (ERGIC) 1. RAB1A cycles between inactive GDP-bound and active GTP-bound forms to recruit downstream effectors responsible for vesicle formation and fusion. In cancer contexts, RAB1A demonstrates significant clinical relevance as it is overexpressed in multiple solid tumor types including colorectal, gastric, and lung cancers compared to normal tissues 234. High RAB1A expression correlates with adverse clinicopathological parameters including larger tumor size, lymph node metastasis, higher TNM stage, and poor prognosis across multiple cancer types 56. Meta-analyses confirm that RAB1A overexpression is associated with significantly worse survival outcomes, particularly 2-5 year survival rates 5. Additionally, RAB1A plays a role in osteoarthritis pathogenesis by inhibiting autophagy through mTORC1-S6K pathway activation, suggesting broader pathological significance beyond cancer 7. These findings position RAB1A as both a prognostic biomarker and potential therapeutic target.