Abstract

The polymerase chain reaction and nucleotide sequence analysis have been used to characterize a point mutation in the seventh exon of one allele of the C1-inhibitor gene in a family with type I hereditary angioedema. A single base change (C-->T) at nucleotide 1482 in C1-inhibitor converted the codon for Gln-339 to a premature translation termination codon, TAG. Family studies suggest that this mutation is responsible for type I hereditary angioedema in a studied pedigree.

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