From: Factor VIII inhibitor development in Egyptian hemophilia patients: does intron 22 inversion mutation play a role?
Degree
Severe HA N (%)
Moderate HA
N (%)
Total
test
P value
Mutation
Inv22 positive
12.05
0.0005***
24 (33)
3(6)
27 (23)
Inv22 negative
48 (67)
45(94)
93 (77)
72
48
120