Exclusion of Patients with a Severe T-Cell Defect Improves the Definition of Common Variable Immunodeficiency

The new ESID definition for CVID still fails to exclude a large number of patients with severe T-cell defect. We propose a new definition (DEFI 2015) that excluded more patients with a T-cell defect and consider these patients as LOCID. This population has a poor outcome and should be considered as a distinct group requiring specific care.