Your browser does not support javascript:   Search for gard hereSearch for news-and-events here.


Genetic and Rare Diseases Information Center (GARD)

Print friendly version

Congenital bilateral absence of the vas deferens

Other Names for this Disease
  • CAVD
  • Congenital bilateral aplasia of vas deferens
See Disclaimer regarding information on this site. Some links on this page may take you to organizations outside of the National Institutes of Health.


Newline Maker

What causes congenital bilateral absence of the vas deferens (CBAVD)?

More than half of all men with CBAVD have mutations in the CFTR gene. Mutations in this gene also cause cystic fibrosis. When CBAVD occurs with CFTR mutations, it is considered a form of atypical cystic fibrosis. In instances of CBAVD without a mutation in the CFTR gene, the cause of this condition is often unknown. Some cases are associated with other structural problems of the urinary tract.[1]
Last updated: 12/22/2011

  1. Congenital bilateral absence of the vas deferens. Home Reference (GHR). 2008; Accessed 12/22/2011.