NCIt definition : Human CFTR wild-type allele is located in the vicinity of 7q31.2 and is approximately
203 kb in length. This allele, which encodes cystic fibrosis transmembrane conductance
regulator protein, plays a role in the transport of chloride ions. Mutation of the
gene is associated with cystic fibrosis and congenital bilateral absence of the vas
deferens.;