Congenital bilateral absence of vas deferens with a new missense mutation (P499A) in the CFTR gene.

ABSTRACT

We describe a congenital bilateral absence of the vas deferens (CBAVD) patient with a compound heterozygosity in the cystic fibrosis transmembrane regulator (CFTR) gene for a stop mutation W1282X and a new missense mutation P499A. The P499A is interpreted as a mild mutation whose phenotypic effects, in this case limited to the development of wolffian duct derivatives, are revealed only in combination with a severe CFTR mutation.