title: Disease severity associated with cystic fibrosis mutations deltaF508 and S549R(T-->G).
abstract: We compared the clinical severity associated with the two cystic fibrosis (CF) mutations S549R(T-->G) and deltaF508. Clinical and biochemical variables of CF were compared in two age- and sex-matched groups of CF children in the United Arab Emirates (UAE). The clinical severity of mutations S549R(T-->G) and deltaF508 showed comparable patterns, with very low Shwachman scores and high sweat chloride levels. We conclude that patients homozygous for the CF mutations deltaF508 and S549R(T-->G) have a severe clinical presentation and illness and are indistinguishable on clinical grounds.
authors.affiliation: Department of Paediatrics, Faculty of Medicine and Health Science, UAE University, Al-Ain, United Arab Emirates.
authors.forename: K P
authors.initials: KP
authors.lastname: Dawson
authors.forename: P M
authors.initials: PM
authors.lastname: Frossard
authors.forename: B
authors.initials: B
authors.lastname: Al-Awar
mesh_terms: D019943:Amino Acid Substitution / Q000235:genetics; D018912:Arabs; D002648:Child; D002675:Child, Preschool; D002712:Chlorides / Q000032:analysis; D003550:Cystic Fibrosis / Q000145:classification / Q000453:epidemiology / Q000235:genetics*; D019005:Cystic Fibrosis Transmembrane Conductance Regulator / Q000235:genetics*; D004252:DNA Mutational Analysis; D005260:Female; D005838:Genotype; D006147:Guanine; D006720:Homozygote; D006801:Humans; D008297:Male; D009154:Mutation / Q000235:genetics*; D010641:Phenotype; D016133:Polymerase Chain Reaction; D012720:Severity of Illness Index; D013542:Sweat / Q000737:chemistry; D013941:Thymine; D014479:United Arab Emirates / Q000453:epidemiology
chemical_list: C505032:CFTR protein, human; D002712:Chlorides; C093349:cystic fibrosis transmembrane conductance regulator delta F508; D019005:Cystic Fibrosis Transmembrane Conductance Regulator; D006147:Guanine; D013941:Thymine