CD58, or lymphocyte function-associated antigen 3 (LFA-3), is a cell adhesion molecule expressed on APCs, particularly macrophages, and other tissue cells. CD58 binds to CD2 (LFA-2) on T cells and is important in strengthening the adhesion and recognition between the T cells and Professional Antigen Presenting Cells, facilitating signal transduction necessary for an immune response. Polymorphisms in the CD58 gene are associated with increased risk for multiple sclerosis. Genomic region containing the single-nucleotide polymorphism rs1335532, associated with high risk of multiple sclerosis, has enhancer properties and can significantly boost the CD58 promoter activity in lymphoblast cells. CD58 plays a role in the regulation of colorectal tumor-initiating cells (CT-ICs). Thus, cells that express CD58 have become a cell of interest in tumorigenesis. Mutations of CD58 have been linked to immune evasion observed in some lymphomas and studies are underway to analyze how its involvement directly affects classical Hodgkin lymphoma (cHL).
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