Bloom Syndrome, also known as microcephaly, growth restriction, and increased sister chromatid exchange 1, is related to microcephaly, growth restriction, and increased sister chromatid exchange 2 and fanconi anemia, complementation group j. An important gene associated with Bloom Syndrome is BLM (BLM RecQ Like Helicase), and among its related pathways/superpathways are Infectious disease and Cell Cycle, Mitotic. Affiliated tissues include skin and t cells, and related phenotypes are growth delay and intrauterine growth retardation