CD79A and infection: Similarly, the severe infection rate increased in parallel to the extent of both ASCA IgG and IgA serological responses (IgA IQR titers: 1st quartile: 16.9%, 2nd quartile: 28.8%, 3rd quartile: 30.3% and 4th quartile: 36.8%; ASCA IgG: 1st quartile: 18.6%, 2nd quartile: 24.7%, 3rd quartile: 34.7% and 4th quartile: 35.2%; p = 0.003 by linear by linear association for both).