29th February 2024

An 18-year-old male has been found to have a clotting disorder after having prolonged bleeding

An 18-year-old male has been found to have a clotting disorder after having prolonged bleeding following a tooth extraction. Blood tests show an abnormal aPTT with a normal PT, and serum levels of Factor IX were found to be reduced.

What are the chances that his future children will develop this condition if his wife is a heterozygote for the same condition?

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