The Parents Learn That Their Newborn Has the CFTR Gene

The parents learn that their newborn has the CFTR gene located on chromosome 7. During counseling, what should the parents be told about the ways that this genetic alteration may be expressed as the child grows?

A) The child develops normally without any clinical manifestations associated with cystic fibrosis.
B) The patient is placed on a lung transplant list.
C) The patient receives bilateral mastectomies.
D) The patient is counseled about the increased risk of developing Alzheimer disease.
E) The child exhibits some mild signs and symptoms associated with cystic fibrosis.