title: DNA linkage analysis of X chromosome-linked chronic granulomatous disease.
abstract: Chronic granulomatous disease (CGD) is a disorder of phagocytes that is usually inherited as an X chromosome-linked trait. Previous family studies suggested that the CGD locus resides on the distal short arm (Xp22-Xpter). Using cloned, polymorphic DNA probes we have performed a linkage analysis within CGD families that suggests a more proximal location (Xp21). In addition, the CGD locus is proximal to the Duchenne muscular dystrophy locus and lies within a broad region of Xp in which recombination appears to be greater than anticipated on the basis of physical distance between markers. Regional localization of the X chromosome CGD locus should facilitate molecular cloning of the CGD gene and molecular dissection of the phagocyte oxidase system.
mesh_terms: D002872:Chromosome Deletion; D003001:Cloning, Molecular; D004262:DNA Restriction Enzymes; D008040:Genetic Linkage; D006105:Granulomatous Disease, Chronic / Q000235:genetics*; D006801:Humans; D009136:Muscular Dystrophies / Q000235:genetics; D010375:Pedigree; D011110:Polymorphism, Genetic; D014960:X Chromosome
chemical_list: D004262:DNA Restriction Enzymes