What are the mutations in the f8 and f9 genes?

The F8 and F9 genes encode the clotting factors VIII and IX, respectively, which are essential for normal blood coagulation. Mutations in the F8 gene often lead to Hemophilia A, characterized by a deficiency in factor VIII, while mutations in the F9 gene cause Hemophilia B, resulting in a deficiency of factor IX. These mutations can include point mutations, insertions, deletions, and large rearrangements, which disrupt the production or function of these clotting factors, leading to increased bleeding tendencies. Both conditions are inherited in an X-linked recessive manner, primarily affecting males.