aLaboratory of Lymphocyte Activation and Susceptibility to EBV infection, INSERM UMR 1163, Imagine Institute

bHaematology department, Hospital Cochin, Assistance Publique-Hôpitaux de Paris (APHP)

cStudy Center for Primary Immunodeficiencies, Necker-Enfants Malades Hospital

dUniversité de Paris Cité

eCentre de références des déficits immunitaires Héréditaires (CEREDIH), Necker-Enfants Malades Hospital APHP, Paris, France

Correspondence to Sylvain Latour, Laboratory of Lymphocyte Activation and Susceptibility to EBV infection, INSERM UMR 1163, Imagine Institute, 24 Boulevard du Montparnasse, 75015 Paris, France. E-mail: [email protected]