Disclaimers: This article explains what an FHA underwriter looks for during the loan review process. This is a general overview of events and does not include every possible underwriting scenario. Every mortgage situation is different because every borrower is different.
DIRECT GENETIC TESTING. Huntingtonâs disease has become a model for genetic testing in other adult-onset inherited disorders because the illness is relatively common, and there is widespread experience with it. Genetic testing programs began in 1986 with linkage testing and evolved to direct gene testing shortly after the gene was cloned in 1993.
Autosomal dominant inheritance pattern. Huntington's disease is caused by an inherited defect in a single gene. Huntington's disease is an autosomal dominant disorder, which means that a person needs only one copy of the defective gene to develop the disorder. parent with a defective Huntington gene could pass along the defective copy of the gene or the healthy copy. Each child in the family, therefore, has a 50 percent chance of inheriting the gene that causes the genetic disorder. 1  Symptoms. 2  Complications.