Cystic fibrosis 3849+10kb C > T mutation associated with severe pulmonary disease and male fertility. 1996

D H Dreyfus, and R Bethel, and E W Gelfand
Department of Pediatrics, National Jewish Center for Immunology and Respiratory Medicine, Denver, Colorado 80206, USA.

A 40-yr-old Hispanic man presented to NJCIRM with end-stage lung disease. Evaluation of this patient 10 yr earlier noted bronchiectasis, normal sweat electrolytes, pancreatic sufficiency, delayed progression of pulmonary disease, and a sperm biopsy consistent with fertility. At the time of admission bronchiectasis was extensive. DNA testing demonstrated homozygosity for the 3849+10kb C > T cystic fibrosis (CF) allele. This is the first description of homozygous expression of this allele in a male patient. Confirmation of fertility was established by demonstrating that his children were carriers of this allele. This patient emphasizes the importance of DNA testing for atypical CF alleles in patients with bronchiectasis of undetermined cause even in the presence of fertility, normal pancreatic function, and normal sweat electrolytes.

UI MeSH Term Description Entries
D008297 Male Males
D001987 Bronchiectasis Persistent abnormal dilatation of the bronchi. Cylindrical Bronchiectasis,Cystic Bronchiectasis,Saccular Bronchiectasis,Varicose Bronchiectasis,Bronchiectases,Bronchiectasis, Cylindrical,Bronchiectasis, Cystic,Bronchiectasis, Saccular,Bronchiectasis, Varicose,Cylindrical Bronchiectases,Cystic Bronchiectases,Saccular Bronchiectases,Varicose Bronchiectases
D003550 Cystic Fibrosis An autosomal recessive genetic disease of the EXOCRINE GLANDS. It is caused by mutations in the gene encoding the CYSTIC FIBROSIS TRANSMEMBRANE CONDUCTANCE REGULATOR expressed in several organs including the LUNG, the PANCREAS, the BILIARY SYSTEM, and the SWEAT GLANDS. Cystic fibrosis is characterized by epithelial secretory dysfunction associated with ductal obstruction resulting in AIRWAY OBSTRUCTION; chronic RESPIRATORY INFECTIONS; PANCREATIC INSUFFICIENCY; maldigestion; salt depletion; and HEAT PROSTRATION. Mucoviscidosis,Cystic Fibrosis of Pancreas,Fibrocystic Disease of Pancreas,Pancreatic Cystic Fibrosis,Pulmonary Cystic Fibrosis,Cystic Fibrosis, Pancreatic,Cystic Fibrosis, Pulmonary,Fibrosis, Cystic,Pancreas Fibrocystic Disease,Pancreas Fibrocystic Diseases
D005298 Fertility The capacity to conceive or to induce conception. It may refer to either the male or female. Fecundity,Below Replacement Fertility,Differential Fertility,Fecundability,Fertility Determinants,Fertility Incentives,Fertility Preferences,Fertility, Below Replacement,Marital Fertility,Natural Fertility,Subfecundity,World Fertility Survey,Determinant, Fertility,Determinants, Fertility,Fertility Determinant,Fertility Incentive,Fertility Preference,Fertility Survey, World,Fertility Surveys, World,Fertility, Differential,Fertility, Marital,Fertility, Natural,Preference, Fertility,Preferences, Fertility,Survey, World Fertility,Surveys, World Fertility,World Fertility Surveys
D006720 Homozygote An individual in which both alleles at a given locus are identical. Homozygotes
D006801 Humans Members of the species Homo sapiens. Homo sapiens,Man (Taxonomy),Human,Man, Modern,Modern Man
D000328 Adult A person having attained full growth or maturity. Adults are of 19 through 44 years of age. For a person between 19 and 24 years of age, YOUNG ADULT is available. Adults
D000483 Alleles Variant forms of the same gene, occupying the same locus on homologous CHROMOSOMES, and governing the variants in production of the same gene product. Allelomorphs,Allele,Allelomorph
D017354 Point Mutation A mutation caused by the substitution of one nucleotide for another. This results in the DNA molecule having a change in a single base pair. Mutation, Point,Mutations, Point,Point Mutations

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