1st March 2024

A 24-year-old woman has presented to the genetic clinic as she has just developed symptoms for a genetic disorder in her family

A 24-year-old woman has presented to the genetic clinic as she has just developed symptoms for a genetic disorder in her family. She notes that her father only presented with symptoms at 32; his grandfather was the index case in the family and had symptoms at 43.

Which of the following conditions will result in this pattern of inheritance?

Select the SINGLE most appropriate option from the list below. Select ONE option only.