Chromosomal Deletion Syndrome is related to chromosome 22q11.2 deletion syndrome, distal and smith-magenis syndrome. An important gene associated with Chromosomal Deletion Syndrome is DGCR5 (DiGeorge Syndrome Critical Region Gene 5), and among its related pathways/superpathways are 22q11.2 copy number variation syndrome and Cell differentiation - expanded index. Affiliated tissues include heart.