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.
1 Genetic testing can be performed to check whether someone is at risk of Huntingtonâs disease. 2  A blood sample is taken and checked for the mutation in the patientâs two copies of the Huntingtin (HTT) gene which codes for the huntingtin protein. People born to parents with Huntingtonâs disease can undergo genetic testing for the condition after the age of 18. 2  If the faulty gene is detected, they will develop the disease but the age at which this will happen cannot be determined.