Monocyte, Dendritic Cell, and Nk Cell Deficiency is related to immunodeficiency 32b and cauda equina syndrome. An important gene associated with Monocyte, Dendritic Cell, and Nk Cell Deficiency is DGCR5 (DiGeorge Syndrome Critical Region Gene 5), and among its related pathways/superpathways are Dendritic Cells Developmental Lineage Pathway and Validated targets of C-MYC transcriptional repression. Affiliated tissues include nk cells and monocytes.