SEC14L2 is a lipid-binding carrier protein that plays crucial roles in intracellular lipid transport and cellular signaling. The protein binds with high affinity to α-tocopherol (vitamin E) and weaker affinity to other tocopherols and tocotrienols, facilitating their transfer between cellular compartments 1. SEC14L2 functions as a key regulator of cholesterol metabolism, particularly in cancer cells, where it promotes cholesterol uptake through interaction with SCARB1 (scavenger receptor class B member 1) 2. The protein participates in novel vitamin E-mediated signaling pathways, where it forms complexes with PI3Kγ and facilitates phosphatidylinositol exchange, ultimately modulating VEGF expression and angiogenesis 3. SEC14L2 also serves as a host factor essential for hepatitis C virus (HCV) replication in cell culture, enabling replication of clinical HCV isolates across multiple genotypes 4. Clinically, SEC14L2 overexpression is associated with poor prognosis in multiple cancers, including non-small cell lung cancer and oral squamous cell carcinoma, where high expression correlates with advanced tumor stages and reduced patient survival 25. The protein's diverse functions in lipid metabolism, viral replication, and cancer progression make it a significant therapeutic target.